Adding upstream version 1.0.1.upstream/1.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1830 insertions, 0 deletions

diff --git a/unittests/linuxliketests.py b/unittests/linuxliketests.py
new file mode 100644
index 0000000..50c6b62
--- /dev/null
+++ b/unittests/linuxliketests.py
@@ -0,0 +1,1830 @@
+# Copyright 2016-2022 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import stat
+import subprocess
+import re
+import tempfile
+import textwrap
+import os
+import shutil
+import hashlib
+from unittest import mock, skipUnless, SkipTest
+from glob import glob
+from pathlib import Path
+import typing as T
+
+import mesonbuild.mlog
+import mesonbuild.depfile
+import mesonbuild.dependencies.base
+import mesonbuild.dependencies.factory
+import mesonbuild.envconfig
+import mesonbuild.environment
+import mesonbuild.coredata
+import mesonbuild.modules.gnome
+from mesonbuild.mesonlib import (
+    MachineChoice, is_windows, is_osx, is_cygwin, is_openbsd, is_haiku,
+    is_sunos, windows_proof_rmtree, version_compare, is_linux,
+    OptionKey, EnvironmentException
+)
+from mesonbuild.compilers import (
+    detect_c_compiler, detect_cpp_compiler, compiler_from_language,
+)
+from mesonbuild.compilers.c import AppleClangCCompiler
+from mesonbuild.compilers.cpp import AppleClangCPPCompiler
+from mesonbuild.compilers.objc import AppleClangObjCCompiler
+from mesonbuild.compilers.objcpp import AppleClangObjCPPCompiler
+from mesonbuild.dependencies import PkgConfigDependency
+import mesonbuild.modules.pkgconfig
+
+PKG_CONFIG = os.environ.get('PKG_CONFIG', 'pkg-config')
+
+
+from run_tests import (
+    get_fake_env
+)
+
+from .baseplatformtests import BasePlatformTests
+from .helpers import *
+
+def _prepend_pkg_config_path(path: str) -> str:
+    """Prepend a string value to pkg_config_path
+
+    :param path: The path to prepend
+    :return: The path, followed by any PKG_CONFIG_PATH already in the environment
+    """
+    pkgconf = os.environ.get('PKG_CONFIG_PATH')
+    if pkgconf:
+        return f'{path}{os.path.pathsep}{pkgconf}'
+    return path
+
+
+def _clang_at_least(compiler: 'Compiler', minver: str, apple_minver: T.Optional[str]) -> bool:
+    """
+    check that Clang compiler is at least a specified version, whether AppleClang or regular Clang
+
+    Parameters
+    ----------
+    compiler:
+        Meson compiler object
+    minver: str
+        Clang minimum version
+    apple_minver: str
+        AppleCLang minimum version
+
+    Returns
+    -------
+    at_least: bool
+        Clang is at least the specified version
+    """
+    if isinstance(compiler, (AppleClangCCompiler, AppleClangCPPCompiler)):
+        if apple_minver is None:
+            return False
+        return version_compare(compiler.version, apple_minver)
+    return version_compare(compiler.version, minver)
+
+@skipUnless(not is_windows(), "requires something Unix-like")
+class LinuxlikeTests(BasePlatformTests):
+    '''
+    Tests that should run on Linux, macOS, and *BSD
+    '''
+
+    def test_basic_soname(self):
+        '''
+        Test that the soname is set correctly for shared libraries. This can't
+        be an ordinary test case because we need to run `readelf` and actually
+        check the soname.
+        https://github.com/mesonbuild/meson/issues/785
+        '''
+        testdir = os.path.join(self.common_test_dir, '4 shared')
+        self.init(testdir)
+        self.build()
+        lib1 = os.path.join(self.builddir, 'libmylib.so')
+        soname = get_soname(lib1)
+        self.assertEqual(soname, 'libmylib.so')
+
+    def test_custom_soname(self):
+        '''
+        Test that the soname is set correctly for shared libraries when
+        a custom prefix and/or suffix is used. This can't be an ordinary test
+        case because we need to run `readelf` and actually check the soname.
+        https://github.com/mesonbuild/meson/issues/785
+        '''
+        testdir = os.path.join(self.common_test_dir, '24 library versions')
+        self.init(testdir)
+        self.build()
+        lib1 = os.path.join(self.builddir, 'prefixsomelib.suffix')
+        soname = get_soname(lib1)
+        self.assertEqual(soname, 'prefixsomelib.suffix')
+
+    def test_pic(self):
+        '''
+        Test that -fPIC is correctly added to static libraries when b_staticpic
+        is true and not when it is false. This can't be an ordinary test case
+        because we need to inspect the compiler database.
+        '''
+        if is_windows() or is_cygwin() or is_osx():
+            raise SkipTest('PIC not relevant')
+
+        testdir = os.path.join(self.common_test_dir, '3 static')
+        self.init(testdir)
+        compdb = self.get_compdb()
+        self.assertIn('-fPIC', compdb[0]['command'])
+        self.setconf('-Db_staticpic=false')
+        # Regenerate build
+        self.build()
+        compdb = self.get_compdb()
+        self.assertNotIn('-fPIC', compdb[0]['command'])
+
+    @mock.patch.dict(os.environ)
+    def test_pkgconfig_gen(self):
+        '''
+        Test that generated pkg-config files can be found and have the correct
+        version and link args. This can't be an ordinary test case because we
+        need to run pkg-config outside of a Meson build file.
+        https://github.com/mesonbuild/meson/issues/889
+        '''
+        testdir = os.path.join(self.common_test_dir, '44 pkgconfig-gen')
+        self.init(testdir)
+        env = get_fake_env(testdir, self.builddir, self.prefix)
+        kwargs = {'required': True, 'silent': True}
+        os.environ['PKG_CONFIG_LIBDIR'] = self.privatedir
+        foo_dep = PkgConfigDependency('libfoo', env, kwargs)
+        self.assertTrue(foo_dep.found())
+        self.assertEqual(foo_dep.get_version(), '1.0')
+        self.assertIn('-lfoo', foo_dep.get_link_args())
+        self.assertEqual(foo_dep.get_pkgconfig_variable('foo', [], None), 'bar')
+        self.assertPathEqual(foo_dep.get_pkgconfig_variable('datadir', [], None), '/usr/data')
+
+        libhello_nolib = PkgConfigDependency('libhello_nolib', env, kwargs)
+        self.assertTrue(libhello_nolib.found())
+        self.assertEqual(libhello_nolib.get_link_args(), [])
+        self.assertEqual(libhello_nolib.get_compile_args(), [])
+        self.assertEqual(libhello_nolib.get_pkgconfig_variable('foo', [], None), 'bar')
+        self.assertEqual(libhello_nolib.get_pkgconfig_variable('prefix', [], None), self.prefix)
+        if version_compare(PkgConfigDependency.check_pkgconfig(env, libhello_nolib.pkgbin),">=0.29.1"):
+            self.assertEqual(libhello_nolib.get_pkgconfig_variable('escaped_var', [], None), r'hello\ world')
+        self.assertEqual(libhello_nolib.get_pkgconfig_variable('unescaped_var', [], None), 'hello world')
+
+        cc = detect_c_compiler(env, MachineChoice.HOST)
+        if cc.get_id() in {'gcc', 'clang'}:
+            for name in {'ct', 'ct0'}:
+                ct_dep = PkgConfigDependency(name, env, kwargs)
+                self.assertTrue(ct_dep.found())
+                self.assertIn('-lct', ct_dep.get_link_args(raw=True))
+
+    def test_pkgconfig_gen_deps(self):
+        '''
+        Test that generated pkg-config files correctly handle dependencies
+        '''
+        testdir = os.path.join(self.common_test_dir, '44 pkgconfig-gen')
+        self.init(testdir)
+        privatedir1 = self.privatedir
+
+        self.new_builddir()
+        testdir = os.path.join(self.common_test_dir, '44 pkgconfig-gen', 'dependencies')
+        self.init(testdir, override_envvars={'PKG_CONFIG_LIBDIR': privatedir1})
+        privatedir2 = self.privatedir
+
+        env = {
+            'PKG_CONFIG_LIBDIR': os.pathsep.join([privatedir1, privatedir2]),
+            'PKG_CONFIG_SYSTEM_LIBRARY_PATH': '/usr/lib',
+        }
+        self._run([PKG_CONFIG, 'dependency-test', '--validate'], override_envvars=env)
+
+        # pkg-config strips some duplicated flags so we have to parse the
+        # generated file ourself.
+        expected = {
+            'Requires': 'libexposed',
+            'Requires.private': 'libfoo >= 1.0',
+            'Libs': '-L${libdir} -llibmain -pthread -lcustom',
+            'Libs.private': '-lcustom2 -L${libdir} -llibinternal',
+            'Cflags': '-I${includedir} -pthread -DCUSTOM',
+        }
+        if is_osx() or is_haiku():
+            expected['Cflags'] = expected['Cflags'].replace('-pthread ', '')
+        with open(os.path.join(privatedir2, 'dependency-test.pc'), encoding='utf-8') as f:
+            matched_lines = 0
+            for line in f:
+                parts = line.split(':', 1)
+                if parts[0] in expected:
+                    key = parts[0]
+                    val = parts[1].strip()
+                    expected_val = expected[key]
+                    self.assertEqual(expected_val, val)
+                    matched_lines += 1
+            self.assertEqual(len(expected), matched_lines)
+
+        cmd = [PKG_CONFIG, 'requires-test']
+        out = self._run(cmd + ['--print-requires'], override_envvars=env).strip().split('\n')
+        if not is_openbsd():
+            self.assertEqual(sorted(out), sorted(['libexposed', 'libfoo >= 1.0', 'libhello']))
+        else:
+            self.assertEqual(sorted(out), sorted(['libexposed', 'libfoo>=1.0', 'libhello']))
+
+        cmd = [PKG_CONFIG, 'requires-private-test']
+        out = self._run(cmd + ['--print-requires-private'], override_envvars=env).strip().split('\n')
+        if not is_openbsd():
+            self.assertEqual(sorted(out), sorted(['libexposed', 'libfoo >= 1.0', 'libhello']))
+        else:
+            self.assertEqual(sorted(out), sorted(['libexposed', 'libfoo>=1.0', 'libhello']))
+
+        cmd = [PKG_CONFIG, 'pub-lib-order']
+        out = self._run(cmd + ['--libs'], override_envvars=env).strip().split()
+        self.assertEqual(out, ['-llibmain2', '-llibinternal'])
+
+        # See common/44 pkgconfig-gen/meson.build for description of the case this test
+        with open(os.path.join(privatedir1, 'simple2.pc'), encoding='utf-8') as f:
+            content = f.read()
+            self.assertIn('Libs: -L${libdir} -lsimple2 -lsimple1', content)
+            self.assertIn('Libs.private: -lz', content)
+
+        with open(os.path.join(privatedir1, 'simple3.pc'), encoding='utf-8') as f:
+            content = f.read()
+            self.assertEqual(1, content.count('-lsimple3'))
+
+        with open(os.path.join(privatedir1, 'simple5.pc'), encoding='utf-8') as f:
+            content = f.read()
+            self.assertNotIn('-lstat2', content)
+
+    @mock.patch.dict(os.environ)
+    def test_pkgconfig_uninstalled(self):
+        testdir = os.path.join(self.common_test_dir, '44 pkgconfig-gen')
+        self.init(testdir)
+        self.build()
+
+        os.environ['PKG_CONFIG_LIBDIR'] = os.path.join(self.builddir, 'meson-uninstalled')
+        if is_cygwin():
+            os.environ['PATH'] += os.pathsep + self.builddir
+
+        self.new_builddir()
+        testdir = os.path.join(self.common_test_dir, '44 pkgconfig-gen', 'dependencies')
+        self.init(testdir)
+        self.build()
+        self.run_tests()
+
+    def test_pkg_unfound(self):
+        testdir = os.path.join(self.unit_test_dir, '23 unfound pkgconfig')
+        self.init(testdir)
+        with open(os.path.join(self.privatedir, 'somename.pc'), encoding='utf-8') as f:
+            pcfile = f.read()
+        self.assertNotIn('blub_blob_blib', pcfile)
+
+    def test_symlink_builddir(self) -> None:
+        '''
+        Test using a symlink as either the builddir for "setup" or
+        the argument for "-C".
+        '''
+        testdir = os.path.join(self.common_test_dir, '1 trivial')
+
+        symdir = f'{self.builddir}-symlink'
+        os.symlink(self.builddir, symdir)
+        self.addCleanup(os.unlink, symdir)
+        self.change_builddir(symdir)
+
+        self.init(testdir)
+        self.build()
+        self._run(self.mtest_command)
+
+    def test_vala_c_warnings(self):
+        '''
+        Test that no warnings are emitted for C code generated by Vala. This
+        can't be an ordinary test case because we need to inspect the compiler
+        database.
+        https://github.com/mesonbuild/meson/issues/864
+        '''
+        if not shutil.which('valac'):
+            raise SkipTest('valac not installed.')
+        testdir = os.path.join(self.vala_test_dir, '5 target glib')
+        self.init(testdir)
+        compdb = self.get_compdb()
+        vala_command = None
+        c_command = None
+        for each in compdb:
+            if each['file'].endswith('GLib.Thread.c'):
+                vala_command = each['command']
+            elif each['file'].endswith('GLib.Thread.vala'):
+                continue
+            elif each['file'].endswith('retcode.c'):
+                c_command = each['command']
+            else:
+                m = 'Unknown file {!r} in vala_c_warnings test'.format(each['file'])
+                raise AssertionError(m)
+        self.assertIsNotNone(vala_command)
+        self.assertIsNotNone(c_command)
+        # -w suppresses all warnings, should be there in Vala but not in C
+        self.assertIn(" -w ", vala_command)
+        self.assertNotIn(" -w ", c_command)
+        # -Wall enables all warnings, should be there in C but not in Vala
+        self.assertNotIn(" -Wall ", vala_command)
+        self.assertIn(" -Wall ", c_command)
+        # -Werror converts warnings to errors, should always be there since it's
+        # injected by an unrelated piece of code and the project has werror=true
+        self.assertIn(" -Werror ", vala_command)
+        self.assertIn(" -Werror ", c_command)
+
+    @skipIfNoPkgconfig
+    def test_qtdependency_pkgconfig_detection(self):
+        '''
+        Test that qt4 and qt5 detection with pkgconfig works.
+        '''
+        # Verify Qt4 or Qt5 can be found with pkg-config
+        qt4 = subprocess.call([PKG_CONFIG, '--exists', 'QtCore'])
+        qt5 = subprocess.call([PKG_CONFIG, '--exists', 'Qt5Core'])
+        testdir = os.path.join(self.framework_test_dir, '4 qt')
+        self.init(testdir, extra_args=['-Dmethod=pkg-config'])
+        # Confirm that the dependency was found with pkg-config
+        mesonlog = self.get_meson_log_raw()
+        if qt4 == 0:
+            self.assertRegex(mesonlog,
+                             r'Run-time dependency qt4 \(modules: Core\) found: YES 4.* \(pkg-config\)')
+        if qt5 == 0:
+            self.assertRegex(mesonlog,
+                             r'Run-time dependency qt5 \(modules: Core\) found: YES 5.* \(pkg-config\)')
+
+    @skip_if_not_base_option('b_sanitize')
+    def test_generate_gir_with_address_sanitizer(self):
+        if is_cygwin():
+            raise SkipTest('asan not available on Cygwin')
+        if is_openbsd():
+            raise SkipTest('-fsanitize=address is not supported on OpenBSD')
+
+        testdir = os.path.join(self.framework_test_dir, '7 gnome')
+        self.init(testdir, extra_args=['-Db_sanitize=address', '-Db_lundef=false'])
+        self.build()
+
+    def test_qt5dependency_qmake_detection(self):
+        '''
+        Test that qt5 detection with qmake works. This can't be an ordinary
+        test case because it involves setting the environment.
+        '''
+        # Verify that qmake is for Qt5
+        if not shutil.which('qmake-qt5'):
+            if not shutil.which('qmake'):
+                raise SkipTest('QMake not found')
+            output = subprocess.getoutput('qmake --version')
+            if 'Qt version 5' not in output:
+                raise SkipTest('Qmake found, but it is not for Qt 5.')
+        # Disable pkg-config codepath and force searching with qmake/qmake-qt5
+        testdir = os.path.join(self.framework_test_dir, '4 qt')
+        self.init(testdir, extra_args=['-Dmethod=qmake'])
+        # Confirm that the dependency was found with qmake
+        mesonlog = self.get_meson_log_raw()
+        self.assertRegex(mesonlog,
+                         r'Run-time dependency qt5 \(modules: Core\) found: YES .* \(qmake\)\n')
+
+    def test_qt6dependency_qmake_detection(self):
+        '''
+        Test that qt6 detection with qmake works. This can't be an ordinary
+        test case because it involves setting the environment.
+        '''
+        # Verify that qmake is for Qt6
+        if not shutil.which('qmake6'):
+            if not shutil.which('qmake'):
+                raise SkipTest('QMake not found')
+            output = subprocess.getoutput('qmake --version')
+            if 'Qt version 6' not in output:
+                raise SkipTest('Qmake found, but it is not for Qt 6.')
+        # Disable pkg-config codepath and force searching with qmake/qmake-qt6
+        testdir = os.path.join(self.framework_test_dir, '4 qt')
+        self.init(testdir, extra_args=['-Dmethod=qmake'])
+        # Confirm that the dependency was found with qmake
+        mesonlog = self.get_meson_log_raw()
+        self.assertRegex(mesonlog,
+                         r'Run-time dependency qt6 \(modules: Core\) found: YES .* \(qmake\)\n')
+
+    def glob_sofiles_without_privdir(self, g):
+        files = glob(g)
+        return [f for f in files if not f.endswith('.p')]
+
+    def _test_soname_impl(self, libpath, install):
+        if is_cygwin() or is_osx():
+            raise SkipTest('Test only applicable to ELF and linuxlike sonames')
+
+        testdir = os.path.join(self.unit_test_dir, '1 soname')
+        self.init(testdir)
+        self.build()
+        if install:
+            self.install()
+
+        # File without aliases set.
+        nover = os.path.join(libpath, 'libnover.so')
+        self.assertPathExists(nover)
+        self.assertFalse(os.path.islink(nover))
+        self.assertEqual(get_soname(nover), 'libnover.so')
+        self.assertEqual(len(self.glob_sofiles_without_privdir(nover[:-3] + '*')), 1)
+
+        # File with version set
+        verset = os.path.join(libpath, 'libverset.so')
+        self.assertPathExists(verset + '.4.5.6')
+        self.assertEqual(os.readlink(verset), 'libverset.so.4')
+        self.assertEqual(get_soname(verset), 'libverset.so.4')
+        self.assertEqual(len(self.glob_sofiles_without_privdir(verset[:-3] + '*')), 3)
+
+        # File with soversion set
+        soverset = os.path.join(libpath, 'libsoverset.so')
+        self.assertPathExists(soverset + '.1.2.3')
+        self.assertEqual(os.readlink(soverset), 'libsoverset.so.1.2.3')
+        self.assertEqual(get_soname(soverset), 'libsoverset.so.1.2.3')
+        self.assertEqual(len(self.glob_sofiles_without_privdir(soverset[:-3] + '*')), 2)
+
+        # File with version and soversion set to same values
+        settosame = os.path.join(libpath, 'libsettosame.so')
+        self.assertPathExists(settosame + '.7.8.9')
+        self.assertEqual(os.readlink(settosame), 'libsettosame.so.7.8.9')
+        self.assertEqual(get_soname(settosame), 'libsettosame.so.7.8.9')
+        self.assertEqual(len(self.glob_sofiles_without_privdir(settosame[:-3] + '*')), 2)
+
+        # File with version and soversion set to different values
+        bothset = os.path.join(libpath, 'libbothset.so')
+        self.assertPathExists(bothset + '.1.2.3')
+        self.assertEqual(os.readlink(bothset), 'libbothset.so.1.2.3')
+        self.assertEqual(os.readlink(bothset + '.1.2.3'), 'libbothset.so.4.5.6')
+        self.assertEqual(get_soname(bothset), 'libbothset.so.1.2.3')
+        self.assertEqual(len(self.glob_sofiles_without_privdir(bothset[:-3] + '*')), 3)
+
+        # A shared_module that is not linked to anything
+        module = os.path.join(libpath, 'libsome_module.so')
+        self.assertPathExists(module)
+        self.assertFalse(os.path.islink(module))
+        self.assertEqual(get_soname(module), None)
+
+        # A shared_module that is not linked to an executable with link_with:
+        module = os.path.join(libpath, 'liblinked_module1.so')
+        self.assertPathExists(module)
+        self.assertFalse(os.path.islink(module))
+        self.assertEqual(get_soname(module), 'liblinked_module1.so')
+
+        # A shared_module that is not linked to an executable with dependencies:
+        module = os.path.join(libpath, 'liblinked_module2.so')
+        self.assertPathExists(module)
+        self.assertFalse(os.path.islink(module))
+        self.assertEqual(get_soname(module), 'liblinked_module2.so')
+
+    def test_soname(self):
+        self._test_soname_impl(self.builddir, False)
+
+    def test_installed_soname(self):
+        libdir = self.installdir + os.path.join(self.prefix, self.libdir)
+        self._test_soname_impl(libdir, True)
+
+    def test_compiler_check_flags_order(self):
+        '''
+        Test that compiler check flags override all other flags. This can't be
+        an ordinary test case because it needs the environment to be set.
+        '''
+        testdir = os.path.join(self.common_test_dir, '36 has function')
+        env = get_fake_env(testdir, self.builddir, self.prefix)
+        cpp = detect_cpp_compiler(env, MachineChoice.HOST)
+        Oflag = '-O3'
+        OflagCPP = Oflag
+        if cpp.get_id() in ('clang', 'gcc'):
+            # prevent developers from adding "int main(int argc, char **argv)"
+            # to small Meson checks unless these parameters are actually used
+            OflagCPP += ' -Werror=unused-parameter'
+        env = {'CFLAGS': Oflag,
+               'CXXFLAGS': OflagCPP}
+        self.init(testdir, override_envvars=env)
+        cmds = self.get_meson_log_compiler_checks()
+        for cmd in cmds:
+            if cmd[0] == 'ccache':
+                cmd = cmd[1:]
+            # Verify that -I flags from the `args` kwarg are first
+            # This is set in the '36 has function' test case
+            self.assertEqual(cmd[1], '-I/tmp')
+            # Verify that -O3 set via the environment is overridden by -O0
+            Oargs = [arg for arg in cmd if arg.startswith('-O')]
+            self.assertEqual(Oargs, [Oflag, '-O0'])
+
+    def _test_stds_impl(self, testdir: str, compiler: 'Compiler') -> None:
+        has_cpp17 = (compiler.get_id() not in {'clang', 'gcc'} or
+                     compiler.get_id() == 'clang' and _clang_at_least(compiler, '>=5.0.0', '>=9.1') or
+                     compiler.get_id() == 'gcc' and version_compare(compiler.version, '>=5.0.0'))
+        has_cpp2a_c17 = (compiler.get_id() not in {'clang', 'gcc'} or
+                         compiler.get_id() == 'clang' and _clang_at_least(compiler, '>=6.0.0', '>=10.0') or
+                         compiler.get_id() == 'gcc' and version_compare(compiler.version, '>=8.0.0'))
+        has_cpp20 = (compiler.get_id() not in {'clang', 'gcc'} or
+                     compiler.get_id() == 'clang' and _clang_at_least(compiler, '>=10.0.0', None) or
+                     compiler.get_id() == 'gcc' and version_compare(compiler.version, '>=10.0.0'))
+        has_c18 = (compiler.get_id() not in {'clang', 'gcc'} or
+                   compiler.get_id() == 'clang' and _clang_at_least(compiler, '>=8.0.0', '>=11.0') or
+                   compiler.get_id() == 'gcc' and version_compare(compiler.version, '>=8.0.0'))
+        # Check that all the listed -std=xxx options for this compiler work just fine when used
+        # https://en.wikipedia.org/wiki/Xcode#Latest_versions
+        # https://www.gnu.org/software/gcc/projects/cxx-status.html
+        key = OptionKey('std', lang=compiler.language)
+        for v in compiler.get_options()[key].choices:
+            # we do it like this to handle gnu++17,c++17 and gnu17,c17 cleanly
+            # thus, C++ first
+            if '++17' in v and not has_cpp17:
+                continue
+            elif '++2a' in v and not has_cpp2a_c17:  # https://en.cppreference.com/w/cpp/compiler_support
+                continue
+            elif '++20' in v and not has_cpp20:
+                continue
+            # now C
+            elif '17' in v and not has_cpp2a_c17:
+                continue
+            elif '18' in v and not has_c18:
+                continue
+            self.init(testdir, extra_args=[f'-D{key!s}={v}'])
+            cmd = self.get_compdb()[0]['command']
+            # c++03 and gnu++03 are not understood by ICC, don't try to look for them
+            skiplist = frozenset([
+                ('intel', 'c++03'),
+                ('intel', 'gnu++03')])
+            if v != 'none' and not (compiler.get_id(), v) in skiplist:
+                cmd_std = f" -std={v} "
+                self.assertIn(cmd_std, cmd)
+            try:
+                self.build()
+            except Exception:
+                print(f'{key!s} was {v!r}')
+                raise
+            self.wipe()
+        # Check that an invalid std option in CFLAGS/CPPFLAGS fails
+        # Needed because by default ICC ignores invalid options
+        cmd_std = '-std=FAIL'
+        if compiler.language == 'c':
+            env_flag_name = 'CFLAGS'
+        elif compiler.language == 'cpp':
+            env_flag_name = 'CXXFLAGS'
+        else:
+            raise NotImplementedError(f'Language {compiler.language} not defined.')
+        env = {}
+        env[env_flag_name] = cmd_std
+        with self.assertRaises((subprocess.CalledProcessError, EnvironmentException),
+                               msg='C compiler should have failed with -std=FAIL'):
+            self.init(testdir, override_envvars = env)
+            # ICC won't fail in the above because additional flags are needed to
+            # make unknown -std=... options errors.
+            self.build()
+
+    def test_compiler_c_stds(self):
+        '''
+        Test that C stds specified for this compiler can all be used. Can't be
+        an ordinary test because it requires passing options to meson.
+        '''
+        testdir = os.path.join(self.common_test_dir, '1 trivial')
+        env = get_fake_env(testdir, self.builddir, self.prefix)
+        cc = detect_c_compiler(env, MachineChoice.HOST)
+        self._test_stds_impl(testdir, cc)
+
+    def test_compiler_cpp_stds(self):
+        '''
+        Test that C++ stds specified for this compiler can all be used. Can't
+        be an ordinary test because it requires passing options to meson.
+        '''
+        testdir = os.path.join(self.common_test_dir, '2 cpp')
+        env = get_fake_env(testdir, self.builddir, self.prefix)
+        cpp = detect_cpp_compiler(env, MachineChoice.HOST)
+        self._test_stds_impl(testdir, cpp)
+
+    def test_unity_subproj(self):
+        testdir = os.path.join(self.common_test_dir, '42 subproject')
+        self.init(testdir, extra_args='--unity=subprojects')
+        pdirs = glob(os.path.join(self.builddir, 'subprojects/sublib/simpletest*.p'))
+        self.assertEqual(len(pdirs), 1)
+        self.assertPathExists(os.path.join(pdirs[0], 'simpletest-unity0.c'))
+        sdirs = glob(os.path.join(self.builddir, 'subprojects/sublib/*sublib*.p'))
+        self.assertEqual(len(sdirs), 1)
+        self.assertPathExists(os.path.join(sdirs[0], 'sublib-unity0.c'))
+        self.assertPathDoesNotExist(os.path.join(self.builddir, 'user@exe/user-unity.c'))
+        self.build()
+
+    def test_installed_modes(self):
+        '''
+        Test that files installed by these tests have the correct permissions.
+        Can't be an ordinary test because our installed_files.txt is very basic.
+        '''
+        if is_cygwin():
+            self.new_builddir_in_tempdir()
+        # Test file modes
+        testdir = os.path.join(self.common_test_dir, '12 data')
+        self.init(testdir)
+        self.install()
+
+        f = os.path.join(self.installdir, 'etc', 'etcfile.dat')
+        found_mode = stat.filemode(os.stat(f).st_mode)
+        want_mode = 'rw-------'
+        self.assertEqual(want_mode, found_mode[1:])
+
+        f = os.path.join(self.installdir, 'usr', 'bin', 'runscript.sh')
+        statf = os.stat(f)
+        found_mode = stat.filemode(statf.st_mode)
+        want_mode = 'rwxr-sr-x'
+        self.assertEqual(want_mode, found_mode[1:])
+        if os.getuid() == 0:
+            # The chown failed nonfatally if we're not root
+            self.assertEqual(0, statf.st_uid)
+            self.assertEqual(0, statf.st_gid)
+
+        f = os.path.join(self.installdir, 'usr', 'share', 'progname',
+                         'fileobject_datafile.dat')
+        orig = os.path.join(testdir, 'fileobject_datafile.dat')
+        statf = os.stat(f)
+        statorig = os.stat(orig)
+        found_mode = stat.filemode(statf.st_mode)
+        orig_mode = stat.filemode(statorig.st_mode)
+        self.assertEqual(orig_mode[1:], found_mode[1:])
+        self.assertEqual(os.getuid(), statf.st_uid)
+        if os.getuid() == 0:
+            # The chown failed nonfatally if we're not root
+            self.assertEqual(0, statf.st_gid)
+
+        self.wipe()
+        # Test directory modes
+        testdir = os.path.join(self.common_test_dir, '59 install subdir')
+        self.init(testdir)
+        self.install()
+
+        f = os.path.join(self.installdir, 'usr', 'share', 'sub1', 'second.dat')
+        statf = os.stat(f)
+        found_mode = stat.filemode(statf.st_mode)
+        want_mode = 'rwxr-x--x'
+        self.assertEqual(want_mode, found_mode[1:])
+        if os.getuid() == 0:
+            # The chown failed nonfatally if we're not root
+            self.assertEqual(0, statf.st_uid)
+
+    def test_installed_modes_extended(self):
+        '''
+        Test that files are installed with correct permissions using install_mode.
+        '''
+        if is_cygwin():
+            self.new_builddir_in_tempdir()
+        testdir = os.path.join(self.common_test_dir, '190 install_mode')
+        self.init(testdir)
+        self.build()
+        self.install()
+
+        for fsobj, want_mode in [
+                ('bin', 'drwxr-x---'),
+                ('bin/runscript.sh', '-rwxr-sr-x'),
+                ('bin/trivialprog', '-rwxr-sr-x'),
+                ('include', 'drwxr-x---'),
+                ('include/config.h', '-rw-rwSr--'),
+                ('include/rootdir.h', '-r--r--r--'),
+                ('lib', 'drwxr-x---'),
+                ('lib/libstat.a', '-rw---Sr--'),
+                ('share', 'drwxr-x---'),
+                ('share/man', 'drwxr-x---'),
+                ('share/man/man1', 'drwxr-x---'),
+                ('share/man/man1/foo.1', '-r--r--r--'),
+                ('share/sub1', 'drwxr-x---'),
+                ('share/sub1/second.dat', '-rwxr-x--x'),
+                ('subdir', 'drwxr-x---'),
+                ('subdir/data.dat', '-rw-rwSr--'),
+        ]:
+            f = os.path.join(self.installdir, 'usr', *fsobj.split('/'))
+            found_mode = stat.filemode(os.stat(f).st_mode)
+            self.assertEqual(want_mode, found_mode,
+                             msg=('Expected file %s to have mode %s but found %s instead.' %
+                                  (fsobj, want_mode, found_mode)))
+        # Ensure that introspect --installed works on all types of files
+        # FIXME: also verify the files list
+        self.introspect('--installed')
+
+    def test_install_umask(self):
+        '''
+        Test that files are installed with correct permissions using default
+        install umask of 022, regardless of the umask at time the worktree
+        was checked out or the build was executed.
+        '''
+        if is_cygwin():
+            self.new_builddir_in_tempdir()
+        # Copy source tree to a temporary directory and change permissions
+        # there to simulate a checkout with umask 002.
+        orig_testdir = os.path.join(self.unit_test_dir, '26 install umask')
+        # Create a new testdir under tmpdir.
+        tmpdir = os.path.realpath(tempfile.mkdtemp())
+        self.addCleanup(windows_proof_rmtree, tmpdir)
+        testdir = os.path.join(tmpdir, '26 install umask')
+        # Copy the tree using shutil.copyfile, which will use the current umask
+        # instead of preserving permissions of the old tree.
+        save_umask = os.umask(0o002)
+        self.addCleanup(os.umask, save_umask)
+        shutil.copytree(orig_testdir, testdir, copy_function=shutil.copyfile)
+        # Preserve the executable status of subdir/sayhello though.
+        os.chmod(os.path.join(testdir, 'subdir', 'sayhello'), 0o775)
+        self.init(testdir)
+        # Run the build under a 027 umask now.
+        os.umask(0o027)
+        self.build()
+        # And keep umask 027 for the install step too.
+        self.install()
+
+        for executable in [
+                'bin/prog',
+                'share/subdir/sayhello',
+        ]:
+            f = os.path.join(self.installdir, 'usr', *executable.split('/'))
+            found_mode = stat.filemode(os.stat(f).st_mode)
+            want_mode = '-rwxr-xr-x'
+            self.assertEqual(want_mode, found_mode,
+                             msg=('Expected file %s to have mode %s but found %s instead.' %
+                                  (executable, want_mode, found_mode)))
+
+        for directory in [
+                'usr',
+                'usr/bin',
+                'usr/include',
+                'usr/share',
+                'usr/share/man',
+                'usr/share/man/man1',
+                'usr/share/subdir',
+        ]:
+            f = os.path.join(self.installdir, *directory.split('/'))
+            found_mode = stat.filemode(os.stat(f).st_mode)
+            want_mode = 'drwxr-xr-x'
+            self.assertEqual(want_mode, found_mode,
+                             msg=('Expected directory %s to have mode %s but found %s instead.' %
+                                  (directory, want_mode, found_mode)))
+
+        for datafile in [
+                'include/sample.h',
+                'share/datafile.cat',
+                'share/file.dat',
+                'share/man/man1/prog.1',
+                'share/subdir/datafile.dog',
+        ]:
+            f = os.path.join(self.installdir, 'usr', *datafile.split('/'))
+            found_mode = stat.filemode(os.stat(f).st_mode)
+            want_mode = '-rw-r--r--'
+            self.assertEqual(want_mode, found_mode,
+                             msg=('Expected file %s to have mode %s but found %s instead.' %
+                                  (datafile, want_mode, found_mode)))
+
+    def test_cpp_std_override(self):
+        testdir = os.path.join(self.unit_test_dir, '6 std override')
+        self.init(testdir)
+        compdb = self.get_compdb()
+        # Don't try to use -std=c++03 as a check for the
+        # presence of a compiler flag, as ICC does not
+        # support it.
+        for i in compdb:
+            if 'prog98' in i['file']:
+                c98_comp = i['command']
+            if 'prog11' in i['file']:
+                c11_comp = i['command']
+            if 'progp' in i['file']:
+                plain_comp = i['command']
+        self.assertNotEqual(len(plain_comp), 0)
+        self.assertIn('-std=c++98', c98_comp)
+        self.assertNotIn('-std=c++11', c98_comp)
+        self.assertIn('-std=c++11', c11_comp)
+        self.assertNotIn('-std=c++98', c11_comp)
+        self.assertNotIn('-std=c++98', plain_comp)
+        self.assertNotIn('-std=c++11', plain_comp)
+        # Now werror
+        self.assertIn('-Werror', plain_comp)
+        self.assertNotIn('-Werror', c98_comp)
+
+    def test_run_installed(self):
+        if is_cygwin() or is_osx():
+            raise SkipTest('LD_LIBRARY_PATH and RPATH not applicable')
+
+        testdir = os.path.join(self.unit_test_dir, '7 run installed')
+        self.init(testdir)
+        self.build()
+        self.install()
+        installed_exe = os.path.join(self.installdir, 'usr/bin/prog')
+        installed_libdir = os.path.join(self.installdir, 'usr/foo')
+        installed_lib = os.path.join(installed_libdir, 'libfoo.so')
+        self.assertTrue(os.path.isfile(installed_exe))
+        self.assertTrue(os.path.isdir(installed_libdir))
+        self.assertTrue(os.path.isfile(installed_lib))
+        # Must fail when run without LD_LIBRARY_PATH to ensure that
+        # rpath has been properly stripped rather than pointing to the builddir.
+        self.assertNotEqual(subprocess.call(installed_exe, stderr=subprocess.DEVNULL), 0)
+        # When LD_LIBRARY_PATH is set it should start working.
+        # For some reason setting LD_LIBRARY_PATH in os.environ fails
+        # when all tests are run (but works when only this test is run),
+        # but doing this explicitly works.
+        env = os.environ.copy()
+        env['LD_LIBRARY_PATH'] = ':'.join([installed_libdir, env.get('LD_LIBRARY_PATH', '')])
+        self.assertEqual(subprocess.call(installed_exe, env=env), 0)
+        # Ensure that introspect --installed works
+        installed = self.introspect('--installed')
+        for v in installed.values():
+            self.assertTrue('prog' in v or 'foo' in v)
+
+    @skipIfNoPkgconfig
+    def test_order_of_l_arguments(self):
+        testdir = os.path.join(self.unit_test_dir, '8 -L -l order')
+        self.init(testdir, override_envvars={'PKG_CONFIG_PATH': testdir})
+        # NOTE: .pc file has -Lfoo -lfoo -Lbar -lbar but pkg-config reorders
+        # the flags before returning them to -Lfoo -Lbar -lfoo -lbar
+        # but pkgconf seems to not do that. Sigh. Support both.
+        expected_order = [('-L/me/first', '-lfoo1'),
+                          ('-L/me/second', '-lfoo2'),
+                          ('-L/me/first', '-L/me/second'),
+                          ('-lfoo1', '-lfoo2'),
+                          ('-L/me/second', '-L/me/third'),
+                          ('-L/me/third', '-L/me/fourth',),
+                          ('-L/me/third', '-lfoo3'),
+                          ('-L/me/fourth', '-lfoo4'),
+                          ('-lfoo3', '-lfoo4'),
+                          ]
+        with open(os.path.join(self.builddir, 'build.ninja'), encoding='utf-8') as ifile:
+            for line in ifile:
+                if expected_order[0][0] in line:
+                    for first, second in expected_order:
+                        self.assertLess(line.index(first), line.index(second))
+                    return
+        raise RuntimeError('Linker entries not found in the Ninja file.')
+
+    def test_introspect_dependencies(self):
+        '''
+        Tests that mesonintrospect --dependencies returns expected output.
+        '''
+        testdir = os.path.join(self.framework_test_dir, '7 gnome')
+        self.init(testdir)
+        glib_found = False
+        gobject_found = False
+        deps = self.introspect('--dependencies')
+        self.assertIsInstance(deps, list)
+        for dep in deps:
+            self.assertIsInstance(dep, dict)
+            self.assertIn('name', dep)
+            self.assertIn('compile_args', dep)
+            self.assertIn('link_args', dep)
+            if dep['name'] == 'glib-2.0':
+                glib_found = True
+            elif dep['name'] == 'gobject-2.0':
+                gobject_found = True
+        self.assertTrue(glib_found)
+        self.assertTrue(gobject_found)
+        if subprocess.call([PKG_CONFIG, '--exists', 'glib-2.0 >= 2.56.2']) != 0:
+            raise SkipTest('glib >= 2.56.2 needed for the rest')
+        targets = self.introspect('--targets')
+        docbook_target = None
+        for t in targets:
+            if t['name'] == 'generated-gdbus-docbook':
+                docbook_target = t
+                break
+        self.assertIsInstance(docbook_target, dict)
+        self.assertEqual(os.path.basename(t['filename'][0]), 'generated-gdbus-doc-' + os.path.basename(t['target_sources'][0]['sources'][0]))
+
+    def test_introspect_installed(self):
+        testdir = os.path.join(self.linuxlike_test_dir, '7 library versions')
+        self.init(testdir)
+
+        install = self.introspect('--installed')
+        install = {os.path.basename(k): v for k, v in install.items()}
+        print(install)
+        if is_osx():
+            the_truth = {
+                'libmodule.dylib': '/usr/lib/libmodule.dylib',
+                'libnoversion.dylib': '/usr/lib/libnoversion.dylib',
+                'libonlysoversion.5.dylib': '/usr/lib/libonlysoversion.5.dylib',
+                'libonlysoversion.dylib': '/usr/lib/libonlysoversion.dylib',
+                'libonlyversion.1.dylib': '/usr/lib/libonlyversion.1.dylib',
+                'libonlyversion.dylib': '/usr/lib/libonlyversion.dylib',
+                'libsome.0.dylib': '/usr/lib/libsome.0.dylib',
+                'libsome.dylib': '/usr/lib/libsome.dylib',
+            }
+            the_truth_2 = {'/usr/lib/libsome.dylib',
+                           '/usr/lib/libsome.0.dylib',
+            }
+        else:
+            the_truth = {
+                'libmodule.so': '/usr/lib/libmodule.so',
+                'libnoversion.so': '/usr/lib/libnoversion.so',
+                'libonlysoversion.so': '/usr/lib/libonlysoversion.so',
+                'libonlysoversion.so.5': '/usr/lib/libonlysoversion.so.5',
+                'libonlyversion.so': '/usr/lib/libonlyversion.so',
+                'libonlyversion.so.1': '/usr/lib/libonlyversion.so.1',
+                'libonlyversion.so.1.4.5': '/usr/lib/libonlyversion.so.1.4.5',
+                'libsome.so': '/usr/lib/libsome.so',
+                'libsome.so.0': '/usr/lib/libsome.so.0',
+                'libsome.so.1.2.3': '/usr/lib/libsome.so.1.2.3',
+            }
+            the_truth_2 = {'/usr/lib/libsome.so',
+                           '/usr/lib/libsome.so.0',
+                           '/usr/lib/libsome.so.1.2.3'}
+        self.assertDictEqual(install, the_truth)
+
+        targets = self.introspect('--targets')
+        for t in targets:
+            if t['name'] != 'some':
+                continue
+            self.assertSetEqual(the_truth_2, set(t['install_filename']))
+
+    def test_build_rpath(self):
+        if is_cygwin():
+            raise SkipTest('Windows PE/COFF binaries do not use RPATH')
+        testdir = os.path.join(self.unit_test_dir, '10 build_rpath')
+        self.init(testdir)
+        self.build()
+        build_rpath = get_rpath(os.path.join(self.builddir, 'prog'))
+        self.assertEqual(build_rpath, '$ORIGIN/sub:/foo/bar')
+        build_rpath = get_rpath(os.path.join(self.builddir, 'progcxx'))
+        self.assertEqual(build_rpath, '$ORIGIN/sub:/foo/bar')
+        self.install()
+        install_rpath = get_rpath(os.path.join(self.installdir, 'usr/bin/prog'))
+        self.assertEqual(install_rpath, '/baz')
+        install_rpath = get_rpath(os.path.join(self.installdir, 'usr/bin/progcxx'))
+        self.assertEqual(install_rpath, 'baz')
+
+    @skipIfNoPkgconfig
+    def test_build_rpath_pkgconfig(self):
+        '''
+        Test that current build artefacts (libs) are found first on the rpath,
+        manually specified rpath comes second and additional rpath elements (from
+        pkg-config files) come last
+        '''
+        if is_cygwin():
+            raise SkipTest('Windows PE/COFF binaries do not use RPATH')
+        testdir = os.path.join(self.unit_test_dir, '89 pkgconfig build rpath order')
+        self.init(testdir, override_envvars={'PKG_CONFIG_PATH': testdir})
+        self.build()
+        build_rpath = get_rpath(os.path.join(self.builddir, 'prog'))
+        self.assertEqual(build_rpath, '$ORIGIN/sub:/foo/bar:/foo/dummy')
+        build_rpath = get_rpath(os.path.join(self.builddir, 'progcxx'))
+        self.assertEqual(build_rpath, '$ORIGIN/sub:/foo/bar:/foo/dummy')
+        self.install()
+        install_rpath = get_rpath(os.path.join(self.installdir, 'usr/bin/prog'))
+        self.assertEqual(install_rpath, '/baz:/foo/dummy')
+        install_rpath = get_rpath(os.path.join(self.installdir, 'usr/bin/progcxx'))
+        self.assertEqual(install_rpath, 'baz:/foo/dummy')
+
+    def test_global_rpath(self):
+        if is_cygwin():
+            raise SkipTest('Windows PE/COFF binaries do not use RPATH')
+        if is_osx():
+            raise SkipTest('Global RPATHs via LDFLAGS not yet supported on MacOS (does anybody need it?)')
+
+        testdir = os.path.join(self.unit_test_dir, '79 global-rpath')
+        oldinstalldir = self.installdir
+
+        # Build and install an external library without DESTDIR.
+        # The external library generates a .pc file without an rpath.
+        yonder_dir = os.path.join(testdir, 'yonder')
+        yonder_prefix = os.path.join(oldinstalldir, 'yonder')
+        yonder_libdir = os.path.join(yonder_prefix, self.libdir)
+        self.prefix = yonder_prefix
+        self.installdir = yonder_prefix
+        self.init(yonder_dir)
+        self.build()
+        self.install(use_destdir=False)
+
+        # Since rpath has multiple valid formats we need to
+        # test that they are all properly used.
+        rpath_formats = [
+            ('-Wl,-rpath=', False),
+            ('-Wl,-rpath,', False),
+            ('-Wl,--just-symbols=', True),
+            ('-Wl,--just-symbols,', True),
+            ('-Wl,-R', False),
+            ('-Wl,-R,', False)
+        ]
+        for rpath_format, exception in rpath_formats:
+            # Build an app that uses that installed library.
+            # Supply the rpath to the installed library via LDFLAGS
+            # (as systems like buildroot and guix are wont to do)
+            # and verify install preserves that rpath.
+            self.new_builddir()
+            env = {'LDFLAGS': rpath_format + yonder_libdir,
+                   'PKG_CONFIG_PATH': os.path.join(yonder_libdir, 'pkgconfig')}
+            if exception:
+                with self.assertRaises(subprocess.CalledProcessError):
+                    self.init(testdir, override_envvars=env)
+                continue
+            self.init(testdir, override_envvars=env)
+            self.build()
+            self.install(use_destdir=False)
+            got_rpath = get_rpath(os.path.join(yonder_prefix, 'bin/rpathified'))
+            self.assertEqual(got_rpath, yonder_libdir, rpath_format)
+
+    @skip_if_not_base_option('b_sanitize')
+    def test_pch_with_address_sanitizer(self):
+        if is_cygwin():
+            raise SkipTest('asan not available on Cygwin')
+        if is_openbsd():
+            raise SkipTest('-fsanitize=address is not supported on OpenBSD')
+
+        testdir = os.path.join(self.common_test_dir, '13 pch')
+        self.init(testdir, extra_args=['-Db_sanitize=address', '-Db_lundef=false'])
+        self.build()
+        compdb = self.get_compdb()
+        for i in compdb:
+            self.assertIn("-fsanitize=address", i["command"])
+
+    def test_cross_find_program(self):
+        testdir = os.path.join(self.unit_test_dir, '11 cross prog')
+        crossfile = tempfile.NamedTemporaryFile(mode='w')
+        print(os.path.join(testdir, 'some_cross_tool.py'))
+
+        tool_path = os.path.join(testdir, 'some_cross_tool.py')
+
+        crossfile.write(textwrap.dedent(f'''\
+            [binaries]
+            c = '{shutil.which('gcc' if is_sunos() else 'cc')}'
+            ar = '{shutil.which('ar')}'
+            strip = '{shutil.which('strip')}'
+            sometool.py = ['{tool_path}']
+            someothertool.py = '{tool_path}'
+
+            [properties]
+
+            [host_machine]
+            system = 'linux'
+            cpu_family = 'arm'
+            cpu = 'armv7' # Not sure if correct.
+            endian = 'little'
+            '''))
+        crossfile.flush()
+        self.meson_cross_files = [crossfile.name]
+        self.init(testdir)
+
+    def test_reconfigure(self):
+        testdir = os.path.join(self.unit_test_dir, '13 reconfigure')
+        self.init(testdir, extra_args=['-Db_coverage=true'], default_args=False)
+        self.build('reconfigure')
+
+    def test_vala_generated_source_buildir_inside_source_tree(self):
+        '''
+        Test that valac outputs generated C files in the expected location when
+        the builddir is a subdir of the source tree.
+        '''
+        if not shutil.which('valac'):
+            raise SkipTest('valac not installed.')
+
+        testdir = os.path.join(self.vala_test_dir, '8 generated sources')
+        newdir = os.path.join(self.builddir, 'srctree')
+        shutil.copytree(testdir, newdir)
+        testdir = newdir
+        # New builddir
+        builddir = os.path.join(testdir, 'subdir/_build')
+        os.makedirs(builddir, exist_ok=True)
+        self.change_builddir(builddir)
+        self.init(testdir)
+        self.build()
+
+    def test_old_gnome_module_codepaths(self):
+        '''
+        A lot of code in the GNOME module is conditional on the version of the
+        glib tools that are installed, and breakages in the old code can slip
+        by once the CI has a newer glib version. So we force the GNOME module
+        to pretend that it's running on an ancient glib so the fallback code is
+        also tested.
+        '''
+        testdir = os.path.join(self.framework_test_dir, '7 gnome')
+        with mock.patch('mesonbuild.modules.gnome.GnomeModule._get_native_glib_version', mock.Mock(return_value='2.20')):
+            env = {'MESON_UNIT_TEST_PRETEND_GLIB_OLD': "1"}
+            self.init(testdir,
+                      inprocess=True,
+                      override_envvars=env)
+            self.build(override_envvars=env)
+
+    @skipIfNoPkgconfig
+    def test_pkgconfig_usage(self):
+        testdir1 = os.path.join(self.unit_test_dir, '27 pkgconfig usage/dependency')
+        testdir2 = os.path.join(self.unit_test_dir, '27 pkgconfig usage/dependee')
+        if subprocess.call([PKG_CONFIG, '--cflags', 'glib-2.0'],
+                           stdout=subprocess.DEVNULL,
+                           stderr=subprocess.DEVNULL) != 0:
+            raise SkipTest('Glib 2.0 dependency not available.')
+        with tempfile.TemporaryDirectory() as tempdirname:
+            self.init(testdir1, extra_args=['--prefix=' + tempdirname, '--libdir=lib'], default_args=False)
+            self.install(use_destdir=False)
+            shutil.rmtree(self.builddir)
+            os.mkdir(self.builddir)
+            pkg_dir = os.path.join(tempdirname, 'lib/pkgconfig')
+            self.assertTrue(os.path.exists(os.path.join(pkg_dir, 'libpkgdep.pc')))
+            lib_dir = os.path.join(tempdirname, 'lib')
+            myenv = os.environ.copy()
+            myenv['PKG_CONFIG_PATH'] = pkg_dir
+            # Private internal libraries must not leak out.
+            pkg_out = subprocess.check_output([PKG_CONFIG, '--static', '--libs', 'libpkgdep'], env=myenv)
+            self.assertNotIn(b'libpkgdep-int', pkg_out, 'Internal library leaked out.')
+            # Dependencies must not leak to cflags when building only a shared library.
+            pkg_out = subprocess.check_output([PKG_CONFIG, '--cflags', 'libpkgdep'], env=myenv)
+            self.assertNotIn(b'glib', pkg_out, 'Internal dependency leaked to headers.')
+            # Test that the result is usable.
+            self.init(testdir2, override_envvars=myenv)
+            self.build(override_envvars=myenv)
+            myenv = os.environ.copy()
+            myenv['LD_LIBRARY_PATH'] = ':'.join([lib_dir, myenv.get('LD_LIBRARY_PATH', '')])
+            if is_cygwin():
+                bin_dir = os.path.join(tempdirname, 'bin')
+                myenv['PATH'] = bin_dir + os.pathsep + myenv['PATH']
+            self.assertTrue(os.path.isdir(lib_dir))
+            test_exe = os.path.join(self.builddir, 'pkguser')
+            self.assertTrue(os.path.isfile(test_exe))
+            subprocess.check_call(test_exe, env=myenv)
+
+    @skipIfNoPkgconfig
+    def test_pkgconfig_relative_paths(self):
+        testdir = os.path.join(self.unit_test_dir, '61 pkgconfig relative paths')
+        pkg_dir = os.path.join(testdir, 'pkgconfig')
+        self.assertPathExists(os.path.join(pkg_dir, 'librelativepath.pc'))
+
+        env = get_fake_env(testdir, self.builddir, self.prefix)
+        env.coredata.set_options({OptionKey('pkg_config_path'): pkg_dir}, subproject='')
+        kwargs = {'required': True, 'silent': True}
+        relative_path_dep = PkgConfigDependency('librelativepath', env, kwargs)
+        self.assertTrue(relative_path_dep.found())
+
+        # Ensure link_args are properly quoted
+        libpath = Path(self.builddir) / '../relativepath/lib'
+        link_args = ['-L' + libpath.as_posix(), '-lrelativepath']
+        self.assertEqual(relative_path_dep.get_link_args(), link_args)
+
+    @skipIfNoPkgconfig
+    def test_pkgconfig_duplicate_path_entries(self):
+        testdir = os.path.join(self.unit_test_dir, '111 pkgconfig duplicate path entries')
+        pkg_dir = os.path.join(testdir, 'pkgconfig')
+
+        env = get_fake_env(testdir, self.builddir, self.prefix)
+        env.coredata.set_options({OptionKey('pkg_config_path'): pkg_dir}, subproject='')
+
+        # Regression test: This used to modify the value of `pkg_config_path`
+        # option, adding the meson-uninstalled directory to it.
+        PkgConfigDependency.setup_env({}, env, MachineChoice.HOST, uninstalled=True)
+
+        pkg_config_path = env.coredata.options[OptionKey('pkg_config_path')].value
+        self.assertEqual(pkg_config_path, [pkg_dir])
+
+    @skipIfNoPkgconfig
+    def test_pkgconfig_internal_libraries(self):
+        '''
+        '''
+        with tempfile.TemporaryDirectory() as tempdirname:
+            # build library
+            testdirbase = os.path.join(self.unit_test_dir, '32 pkgconfig use libraries')
+            testdirlib = os.path.join(testdirbase, 'lib')
+            self.init(testdirlib, extra_args=['--prefix=' + tempdirname,
+                                              '--libdir=lib',
+                                              '--default-library=static'], default_args=False)
+            self.build()
+            self.install(use_destdir=False)
+
+            # build user of library
+            pkg_dir = os.path.join(tempdirname, 'lib/pkgconfig')
+            self.new_builddir()
+            self.init(os.path.join(testdirbase, 'app'),
+                      override_envvars={'PKG_CONFIG_PATH': pkg_dir})
+            self.build()
+
+    @skipIfNoPkgconfig
+    def test_static_archive_stripping(self):
+        '''
+        Check that Meson produces valid static archives with --strip enabled
+        '''
+        with tempfile.TemporaryDirectory() as tempdirname:
+            testdirbase = os.path.join(self.unit_test_dir, '65 static archive stripping')
+
+            # build lib
+            self.new_builddir()
+            testdirlib = os.path.join(testdirbase, 'lib')
+            testlibprefix = os.path.join(tempdirname, 'libprefix')
+            self.init(testdirlib, extra_args=['--prefix=' + testlibprefix,
+                                              '--libdir=lib',
+                                              '--default-library=static',
+                                              '--buildtype=debug',
+                                              '--strip'], default_args=False)
+            self.build()
+            self.install(use_destdir=False)
+
+            # build executable (uses lib, fails if static archive has been stripped incorrectly)
+            pkg_dir = os.path.join(testlibprefix, 'lib/pkgconfig')
+            self.new_builddir()
+            self.init(os.path.join(testdirbase, 'app'),
+                      override_envvars={'PKG_CONFIG_PATH': pkg_dir})
+            self.build()
+
+    @skipIfNoPkgconfig
+    def test_pkgconfig_formatting(self):
+        testdir = os.path.join(self.unit_test_dir, '38 pkgconfig format')
+        self.init(testdir)
+        myenv = os.environ.copy()
+        myenv['PKG_CONFIG_PATH'] = _prepend_pkg_config_path(self.privatedir)
+        stdo = subprocess.check_output([PKG_CONFIG, '--libs-only-l', 'libsomething'], env=myenv)
+        deps = [b'-lgobject-2.0', b'-lgio-2.0', b'-lglib-2.0', b'-lsomething']
+        if is_windows() or is_cygwin() or is_osx() or is_openbsd():
+            # On Windows, libintl is a separate library
+            deps.append(b'-lintl')
+        self.assertEqual(set(deps), set(stdo.split()))
+
+    @skipIfNoPkgconfig
+    @skip_if_not_language('cs')
+    def test_pkgconfig_csharp_library(self):
+        testdir = os.path.join(self.unit_test_dir, '49 pkgconfig csharp library')
+        self.init(testdir)
+        myenv = os.environ.copy()
+        myenv['PKG_CONFIG_PATH'] = _prepend_pkg_config_path(self.privatedir)
+        stdo = subprocess.check_output([PKG_CONFIG, '--libs', 'libsomething'], env=myenv)
+
+        self.assertEqual("-r/usr/lib/libsomething.dll", str(stdo.decode('ascii')).strip())
+
+    @skipIfNoPkgconfig
+    def test_pkgconfig_link_order(self):
+        '''
+        Test that libraries are listed before their dependencies.
+        '''
+        testdir = os.path.join(self.unit_test_dir, '52 pkgconfig static link order')
+        self.init(testdir)
+        myenv = os.environ.copy()
+        myenv['PKG_CONFIG_PATH'] = _prepend_pkg_config_path(self.privatedir)
+        stdo = subprocess.check_output([PKG_CONFIG, '--libs', 'libsomething'], env=myenv)
+        deps = stdo.split()
+        self.assertLess(deps.index(b'-lsomething'), deps.index(b'-ldependency'))
+
+    def test_deterministic_dep_order(self):
+        '''
+        Test that the dependencies are always listed in a deterministic order.
+        '''
+        testdir = os.path.join(self.unit_test_dir, '42 dep order')
+        self.init(testdir)
+        with open(os.path.join(self.builddir, 'build.ninja'), encoding='utf-8') as bfile:
+            for line in bfile:
+                if 'build myexe:' in line or 'build myexe.exe:' in line:
+                    self.assertIn('liblib1.a liblib2.a', line)
+                    return
+        raise RuntimeError('Could not find the build rule')
+
+    def test_deterministic_rpath_order(self):
+        '''
+        Test that the rpaths are always listed in a deterministic order.
+        '''
+        if is_cygwin():
+            raise SkipTest('rpath are not used on Cygwin')
+        testdir = os.path.join(self.unit_test_dir, '41 rpath order')
+        self.init(testdir)
+        if is_osx():
+            rpathre = re.compile(r'-rpath,.*/subprojects/sub1.*-rpath,.*/subprojects/sub2')
+        else:
+            rpathre = re.compile(r'-rpath,\$\$ORIGIN/subprojects/sub1:\$\$ORIGIN/subprojects/sub2')
+        with open(os.path.join(self.builddir, 'build.ninja'), encoding='utf-8') as bfile:
+            for line in bfile:
+                if '-rpath' in line:
+                    self.assertRegex(line, rpathre)
+                    return
+        raise RuntimeError('Could not find the rpath')
+
+    def test_override_with_exe_dep(self):
+        '''
+        Test that we produce the correct dependencies when a program is overridden with an executable.
+        '''
+        testdir = os.path.join(self.src_root, 'test cases', 'native', '9 override with exe')
+        self.init(testdir)
+        with open(os.path.join(self.builddir, 'build.ninja'), encoding='utf-8') as bfile:
+            for line in bfile:
+                if 'main1.c:' in line or 'main2.c:' in line:
+                    self.assertIn('| subprojects/sub/foobar', line)
+
+    @skipIfNoPkgconfig
+    def test_usage_external_library(self):
+        '''
+        Test that uninstalled usage of an external library (from the system or
+        PkgConfigDependency) works. On macOS, this workflow works out of the
+        box. On Linux, BSDs, Windows, etc, you need to set extra arguments such
+        as LD_LIBRARY_PATH, etc, so this test is skipped.
+
+        The system library is found with cc.find_library() and pkg-config deps.
+        '''
+        oldprefix = self.prefix
+        # Install external library so we can find it
+        testdir = os.path.join(self.unit_test_dir, '39 external, internal library rpath', 'external library')
+        # install into installdir without using DESTDIR
+        installdir = self.installdir
+        self.prefix = installdir
+        self.init(testdir)
+        self.prefix = oldprefix
+        self.build()
+        self.install(use_destdir=False)
+        ## New builddir for the consumer
+        self.new_builddir()
+        env = {'LIBRARY_PATH': os.path.join(installdir, self.libdir),
+               'PKG_CONFIG_PATH': _prepend_pkg_config_path(os.path.join(installdir, self.libdir, 'pkgconfig'))}
+        testdir = os.path.join(self.unit_test_dir, '39 external, internal library rpath', 'built library')
+        # install into installdir without using DESTDIR
+        self.prefix = self.installdir
+        self.init(testdir, override_envvars=env)
+        self.prefix = oldprefix
+        self.build(override_envvars=env)
+        # test uninstalled
+        self.run_tests(override_envvars=env)
+        if not (is_osx() or is_linux()):
+            return
+        # test running after installation
+        self.install(use_destdir=False)
+        prog = os.path.join(self.installdir, 'bin', 'prog')
+        self._run([prog])
+        if not is_osx():
+            # Rest of the workflow only works on macOS
+            return
+        out = self._run(['otool', '-L', prog])
+        self.assertNotIn('@rpath', out)
+        ## New builddir for testing that DESTDIR is not added to install_name
+        self.new_builddir()
+        # install into installdir with DESTDIR
+        self.init(testdir, override_envvars=env)
+        self.build(override_envvars=env)
+        # test running after installation
+        self.install(override_envvars=env)
+        prog = self.installdir + os.path.join(self.prefix, 'bin', 'prog')
+        lib = self.installdir + os.path.join(self.prefix, 'lib', 'libbar_built.dylib')
+        for f in prog, lib:
+            out = self._run(['otool', '-L', f])
+            # Ensure that the otool output does not contain self.installdir
+            self.assertNotRegex(out, self.installdir + '.*dylib ')
+
+    @skipIfNoPkgconfig
+    def test_link_arg_fullname(self):
+        '''
+        Test for  support of -l:libfullname.a
+        see: https://github.com/mesonbuild/meson/issues/9000
+             https://stackoverflow.com/questions/48532868/gcc-library-option-with-a-colon-llibevent-a
+        '''
+        testdir = os.path.join(self.unit_test_dir, '97 link full name','libtestprovider')
+        oldprefix = self.prefix
+        # install into installdir without using DESTDIR
+        installdir = self.installdir
+        self.prefix = installdir
+        self.init(testdir)
+        self.prefix=oldprefix
+        self.build()
+        self.install(use_destdir=False)
+
+        self.new_builddir()
+        env = {'LIBRARY_PATH': os.path.join(installdir, self.libdir),
+               'PKG_CONFIG_PATH': _prepend_pkg_config_path(os.path.join(installdir, self.libdir, 'pkgconfig'))}
+        testdir = os.path.join(self.unit_test_dir, '97 link full name','proguser')
+        self.init(testdir,override_envvars=env)
+
+        # test for link with full path
+        with open(os.path.join(self.builddir, 'build.ninja'), encoding='utf-8') as bfile:
+            for line in bfile:
+                if 'build dprovidertest:' in line:
+                    self.assertIn('/libtestprovider.a', line)
+
+        if is_osx():
+            # macOS's ld do not supports `--whole-archive`, skip build & run
+            return
+
+        self.build(override_envvars=env)
+
+        # skip test if pkg-config is too old.
+        #   before v0.28, Libs flags like -Wl will not kept in context order with -l flags.
+        #   see https://gitlab.freedesktop.org/pkg-config/pkg-config/-/blob/master/NEWS
+        pkgconfigver = subprocess.check_output([PKG_CONFIG, '--version'])
+        if b'0.28' > pkgconfigver:
+            raise SkipTest('pkg-config is too old to be correctly done this.')
+        self.run_tests()
+
+    @skipIfNoPkgconfig
+    def test_usage_pkgconfig_prefixes(self):
+        '''
+        Build and install two external libraries, to different prefixes,
+        then build and install a client program that finds them via pkgconfig,
+        and verify the installed client program runs.
+        '''
+        oldinstalldir = self.installdir
+
+        # Build and install both external libraries without DESTDIR
+        val1dir = os.path.join(self.unit_test_dir, '74 pkgconfig prefixes', 'val1')
+        val1prefix = os.path.join(oldinstalldir, 'val1')
+        self.prefix = val1prefix
+        self.installdir = val1prefix
+        self.init(val1dir)
+        self.build()
+        self.install(use_destdir=False)
+        self.new_builddir()
+
+        env1 = {}
+        env1['PKG_CONFIG_PATH'] = os.path.join(val1prefix, self.libdir, 'pkgconfig')
+        val2dir = os.path.join(self.unit_test_dir, '74 pkgconfig prefixes', 'val2')
+        val2prefix = os.path.join(oldinstalldir, 'val2')
+        self.prefix = val2prefix
+        self.installdir = val2prefix
+        self.init(val2dir, override_envvars=env1)
+        self.build()
+        self.install(use_destdir=False)
+        self.new_builddir()
+
+        # Build, install, and run the client program
+        env2 = {}
+        env2['PKG_CONFIG_PATH'] = os.path.join(val2prefix, self.libdir, 'pkgconfig')
+        testdir = os.path.join(self.unit_test_dir, '74 pkgconfig prefixes', 'client')
+        testprefix = os.path.join(oldinstalldir, 'client')
+        self.prefix = testprefix
+        self.installdir = testprefix
+        self.init(testdir, override_envvars=env2)
+        self.build()
+        self.install(use_destdir=False)
+        prog = os.path.join(self.installdir, 'bin', 'client')
+        env3 = {}
+        if is_cygwin():
+            env3['PATH'] = os.path.join(val1prefix, 'bin') + \
+                os.pathsep + \
+                os.path.join(val2prefix, 'bin') + \
+                os.pathsep + os.environ['PATH']
+        out = self._run([prog], override_envvars=env3).strip()
+        # Expected output is val1 + val2 = 3
+        self.assertEqual(out, '3')
+
+    def install_subdir_invalid_symlinks(self, testdir, subdir_path):
+        '''
+        Test that installation of broken symlinks works fine.
+        https://github.com/mesonbuild/meson/issues/3914
+        '''
+        testdir = os.path.join(self.common_test_dir, testdir)
+        subdir = os.path.join(testdir, subdir_path)
+        with chdir(subdir):
+            # Can't distribute broken symlinks in the source tree because it breaks
+            # the creation of zipapps. Create it dynamically and run the test by
+            # hand.
+            src = '../../nonexistent.txt'
+            os.symlink(src, 'invalid-symlink.txt')
+            try:
+                self.init(testdir)
+                self.build()
+                self.install()
+                install_path = subdir_path.split(os.path.sep)[-1]
+                link = os.path.join(self.installdir, 'usr', 'share', install_path, 'invalid-symlink.txt')
+                self.assertTrue(os.path.islink(link), msg=link)
+                self.assertEqual(src, os.readlink(link))
+                self.assertFalse(os.path.isfile(link), msg=link)
+            finally:
+                os.remove(os.path.join(subdir, 'invalid-symlink.txt'))
+
+    def test_install_subdir_symlinks(self):
+        self.install_subdir_invalid_symlinks('59 install subdir', os.path.join('sub', 'sub1'))
+
+    def test_install_subdir_symlinks_with_default_umask(self):
+        self.install_subdir_invalid_symlinks('190 install_mode', 'sub2')
+
+    def test_install_subdir_symlinks_with_default_umask_and_mode(self):
+        self.install_subdir_invalid_symlinks('190 install_mode', 'sub1')
+
+    @skipIfNoPkgconfigDep('gmodule-2.0')
+    def test_ldflag_dedup(self):
+        testdir = os.path.join(self.unit_test_dir, '51 ldflagdedup')
+        if is_cygwin() or is_osx():
+            raise SkipTest('Not applicable on Cygwin or OSX.')
+        env = get_fake_env()
+        cc = detect_c_compiler(env, MachineChoice.HOST)
+        linker = cc.linker
+        if not linker.export_dynamic_args(env):
+            raise SkipTest('Not applicable for linkers without --export-dynamic')
+        self.init(testdir)
+        build_ninja = os.path.join(self.builddir, 'build.ninja')
+        max_count = 0
+        search_term = '-Wl,--export-dynamic'
+        with open(build_ninja, encoding='utf-8') as f:
+            for line in f:
+                max_count = max(max_count, line.count(search_term))
+        self.assertEqual(max_count, 1, 'Export dynamic incorrectly deduplicated.')
+
+    def test_compiler_libs_static_dedup(self):
+        testdir = os.path.join(self.unit_test_dir, '55 dedup compiler libs')
+        self.init(testdir)
+        build_ninja = os.path.join(self.builddir, 'build.ninja')
+        with open(build_ninja, encoding='utf-8') as f:
+            lines = f.readlines()
+        for lib in ('-ldl', '-lm', '-lc', '-lrt'):
+            for line in lines:
+                if lib not in line:
+                    continue
+                # Assert that
+                self.assertEqual(len(line.split(lib)), 2, msg=(lib, line))
+
+    @skipIfNoPkgconfig
+    def test_noncross_options(self):
+        # C_std defined in project options must be in effect also when native compiling.
+        testdir = os.path.join(self.unit_test_dir, '50 noncross options')
+        self.init(testdir, extra_args=['-Dpkg_config_path=' + testdir])
+        compdb = self.get_compdb()
+        self.assertEqual(len(compdb), 2)
+        self.assertRegex(compdb[0]['command'], '-std=c99')
+        self.assertRegex(compdb[1]['command'], '-std=c99')
+        self.build()
+
+    def test_identity_cross(self):
+        testdir = os.path.join(self.unit_test_dir, '60 identity cross')
+
+        constantsfile = tempfile.NamedTemporaryFile(mode='w')
+        constantsfile.write(textwrap.dedent('''\
+            [constants]
+            py_ext = '.py'
+            '''))
+        constantsfile.flush()
+
+        nativefile = tempfile.NamedTemporaryFile(mode='w')
+        nativefile.write(textwrap.dedent('''\
+            [binaries]
+            c = ['{}' + py_ext]
+            '''.format(os.path.join(testdir, 'build_wrapper'))))
+        nativefile.flush()
+        self.meson_native_files = [constantsfile.name, nativefile.name]
+
+        crossfile = tempfile.NamedTemporaryFile(mode='w')
+        crossfile.write(textwrap.dedent('''\
+            [binaries]
+            c = ['{}' + py_ext]
+            '''.format(os.path.join(testdir, 'host_wrapper'))))
+        crossfile.flush()
+        self.meson_cross_files = [constantsfile.name, crossfile.name]
+
+        # TODO should someday be explicit about build platform only here
+        self.init(testdir)
+
+    def test_identity_cross_env(self):
+        testdir = os.path.join(self.unit_test_dir, '60 identity cross')
+        env = {
+            'CC_FOR_BUILD': '"' + os.path.join(testdir, 'build_wrapper.py') + '"',
+            'CC': '"' + os.path.join(testdir, 'host_wrapper.py') + '"',
+        }
+        crossfile = tempfile.NamedTemporaryFile(mode='w')
+        crossfile.write('')
+        crossfile.flush()
+        self.meson_cross_files = [crossfile.name]
+        # TODO should someday be explicit about build platform only here
+        self.init(testdir, override_envvars=env)
+
+    @skipIfNoPkgconfig
+    def test_static_link(self):
+        if is_cygwin():
+            raise SkipTest("Cygwin doesn't support LD_LIBRARY_PATH.")
+
+        # Build some libraries and install them
+        testdir = os.path.join(self.unit_test_dir, '66 static link/lib')
+        libdir = os.path.join(self.installdir, self.libdir)
+        oldprefix = self.prefix
+        self.prefix = self.installdir
+        self.init(testdir)
+        self.install(use_destdir=False)
+
+        # Test that installed libraries works
+        self.new_builddir()
+        self.prefix = oldprefix
+        meson_args = [f'-Dc_link_args=-L{libdir}',
+                      '--fatal-meson-warnings']
+        testdir = os.path.join(self.unit_test_dir, '66 static link')
+        env = {'PKG_CONFIG_LIBDIR': os.path.join(libdir, 'pkgconfig')}
+        self.init(testdir, extra_args=meson_args, override_envvars=env)
+        self.build()
+        self.run_tests()
+
+    def _check_ld(self, check: str, name: str, lang: str, expected: str) -> None:
+        if is_sunos():
+            raise SkipTest('Solaris currently cannot override the linker.')
+        if not shutil.which(check):
+            raise SkipTest(f'Could not find {check}.')
+        envvars = [mesonbuild.envconfig.ENV_VAR_PROG_MAP[f'{lang}_ld']]
+
+        # Also test a deprecated variable if there is one.
+        if f'{lang}_ld' in mesonbuild.envconfig.DEPRECATED_ENV_PROG_MAP:
+            envvars.append(
+                mesonbuild.envconfig.DEPRECATED_ENV_PROG_MAP[f'{lang}_ld'])
+
+        for envvar in envvars:
+            with mock.patch.dict(os.environ, {envvar: name}):
+                env = get_fake_env()
+                comp = compiler_from_language(env, lang, MachineChoice.HOST)
+                if isinstance(comp, (AppleClangCCompiler, AppleClangCPPCompiler,
+                                     AppleClangObjCCompiler, AppleClangObjCPPCompiler)):
+                    raise SkipTest('AppleClang is currently only supported with ld64')
+                if lang != 'rust' and comp.use_linker_args('bfd', '') == []:
+                    raise SkipTest(
+                        f'Compiler {comp.id} does not support using alternative linkers')
+                self.assertEqual(comp.linker.id, expected)
+
+    def test_ld_environment_variable_bfd(self):
+        self._check_ld('ld.bfd', 'bfd', 'c', 'ld.bfd')
+
+    def test_ld_environment_variable_gold(self):
+        self._check_ld('ld.gold', 'gold', 'c', 'ld.gold')
+
+    def test_ld_environment_variable_lld(self):
+        self._check_ld('ld.lld', 'lld', 'c', 'ld.lld')
+
+    @skip_if_not_language('rust')
+    @skipIfNoExecutable('ld.gold')  # need an additional check here because _check_ld checks for gcc
+    def test_ld_environment_variable_rust(self):
+        self._check_ld('gcc', 'gcc -fuse-ld=gold', 'rust', 'ld.gold')
+
+    def test_ld_environment_variable_cpp(self):
+        self._check_ld('ld.gold', 'gold', 'cpp', 'ld.gold')
+
+    @skip_if_not_language('objc')
+    def test_ld_environment_variable_objc(self):
+        self._check_ld('ld.gold', 'gold', 'objc', 'ld.gold')
+
+    @skip_if_not_language('objcpp')
+    def test_ld_environment_variable_objcpp(self):
+        self._check_ld('ld.gold', 'gold', 'objcpp', 'ld.gold')
+
+    @skip_if_not_language('fortran')
+    def test_ld_environment_variable_fortran(self):
+        self._check_ld('ld.gold', 'gold', 'fortran', 'ld.gold')
+
+    @skip_if_not_language('d')
+    def test_ld_environment_variable_d(self):
+        # At least for me, ldc defaults to gold, and gdc defaults to bfd, so
+        # let's pick lld, which isn't the default for either (currently)
+        if is_osx():
+            expected = 'ld64'
+        else:
+            expected = 'ld.lld'
+        self._check_ld('ld.lld', 'lld', 'd', expected)
+
+    def compute_sha256(self, filename):
+        with open(filename, 'rb') as f:
+            return hashlib.sha256(f.read()).hexdigest()
+
+    def test_wrap_with_file_url(self):
+        testdir = os.path.join(self.unit_test_dir, '72 wrap file url')
+        source_filename = os.path.join(testdir, 'subprojects', 'foo.tar.xz')
+        patch_filename = os.path.join(testdir, 'subprojects', 'foo-patch.tar.xz')
+        wrap_filename = os.path.join(testdir, 'subprojects', 'foo.wrap')
+        source_hash = self.compute_sha256(source_filename)
+        patch_hash = self.compute_sha256(patch_filename)
+        wrap = textwrap.dedent("""\
+            [wrap-file]
+            directory = foo
+
+            source_url = http://server.invalid/foo
+            source_fallback_url = file://{}
+            source_filename = foo.tar.xz
+            source_hash = {}
+
+            patch_url = http://server.invalid/foo
+            patch_fallback_url = file://{}
+            patch_filename = foo-patch.tar.xz
+            patch_hash = {}
+            """.format(source_filename, source_hash, patch_filename, patch_hash))
+        with open(wrap_filename, 'w', encoding='utf-8') as f:
+            f.write(wrap)
+        self.init(testdir)
+        self.build()
+        self.run_tests()
+
+        windows_proof_rmtree(os.path.join(testdir, 'subprojects', 'packagecache'))
+        windows_proof_rmtree(os.path.join(testdir, 'subprojects', 'foo'))
+        os.unlink(wrap_filename)
+
+    def test_no_rpath_for_static(self):
+        testdir = os.path.join(self.common_test_dir, '5 linkstatic')
+        self.init(testdir)
+        self.build()
+        build_rpath = get_rpath(os.path.join(self.builddir, 'prog'))
+        self.assertIsNone(build_rpath)
+
+    def test_lookup_system_after_broken_fallback(self):
+        # Just to generate libfoo.pc so we can test system dependency lookup.
+        testdir = os.path.join(self.common_test_dir, '44 pkgconfig-gen')
+        self.init(testdir)
+        privatedir = self.privatedir
+
+        # Write test project where the first dependency() returns not-found
+        # because 'broken' subproject does not exit, but that should not prevent
+        # the 2nd dependency() to lookup on system.
+        self.new_builddir()
+        with tempfile.TemporaryDirectory() as d:
+            with open(os.path.join(d, 'meson.build'), 'w', encoding='utf-8') as f:
+                f.write(textwrap.dedent('''\
+                    project('test')
+                    dependency('notfound', fallback: 'broken', required: false)
+                    dependency('libfoo', fallback: 'broken', required: true)
+                    '''))
+            self.init(d, override_envvars={'PKG_CONFIG_LIBDIR': privatedir})
+
+    def test_as_link_whole(self):
+        testdir = os.path.join(self.unit_test_dir, '76 as link whole')
+        self.init(testdir)
+        with open(os.path.join(self.privatedir, 'bar1.pc'), encoding='utf-8') as f:
+            content = f.read()
+            self.assertIn('-lfoo', content)
+        with open(os.path.join(self.privatedir, 'bar2.pc'), encoding='utf-8') as f:
+            content = f.read()
+            self.assertNotIn('-lfoo', content)
+
+    def test_prelinking(self):
+        # Prelinking currently only works on recently new GNU toolchains.
+        # Skip everything else. When support for other toolchains is added,
+        # remove limitations as necessary.
+        if is_osx():
+            raise SkipTest('Prelinking not supported on Darwin.')
+        if 'clang' in os.environ.get('CC', 'dummy'):
+            raise SkipTest('Prelinking not supported with Clang.')
+        testdir = os.path.join(self.unit_test_dir, '86 prelinking')
+        env = get_fake_env(testdir, self.builddir, self.prefix)
+        cc = detect_c_compiler(env, MachineChoice.HOST)
+        if cc.id == "gcc" and not version_compare(cc.version, '>=9'):
+            raise SkipTest('Prelinking not supported with gcc 8 or older.')
+        self.init(testdir)
+        self.build()
+        outlib = os.path.join(self.builddir, 'libprelinked.a')
+        ar = shutil.which('ar')
+        self.assertPathExists(outlib)
+        self.assertIsNotNone(ar)
+        p = subprocess.run([ar, 't', outlib],
+                           stdout=subprocess.PIPE,
+                           stderr=subprocess.DEVNULL,
+                           text=True, timeout=1)
+        obj_files = p.stdout.strip().split('\n')
+        self.assertEqual(len(obj_files), 1)
+        self.assertTrue(obj_files[0].endswith('-prelink.o'))
+
+    def do_one_test_with_nativefile(self, testdir, args):
+        testdir = os.path.join(self.common_test_dir, testdir)
+        with tempfile.TemporaryDirectory() as d:
+            p = Path(d) / 'nativefile'
+            with p.open('wt', encoding='utf-8') as f:
+                f.write(f'''[binaries]
+                    c = {args}
+                    ''')
+            self.init(testdir, extra_args=['--native-file=' + str(p)])
+            self.build()
+
+    def test_cmake_multilib(self):
+        '''
+        Test that the cmake module handles multilib paths correctly.
+        '''
+        # Verify that "gcc -m32" works
+        try:
+            self.do_one_test_with_nativefile('1 trivial', "['gcc', '-m32']")
+        except subprocess.CalledProcessError as e:
+            raise SkipTest('Not GCC, or GCC does not have the -m32 option')
+        self.wipe()
+
+        # Verify that cmake works
+        try:
+            self.do_one_test_with_nativefile('../cmake/1 basic', "['gcc']")
+        except subprocess.CalledProcessError as e:
+            raise SkipTest('Could not build basic cmake project')
+        self.wipe()
+
+        # If so, we can test that cmake works with "gcc -m32"
+        self.do_one_test_with_nativefile('../cmake/1 basic', "['gcc', '-m32']")
+
+    @skipUnless(is_linux() or is_osx(), 'Test only applicable to Linux and macOS')
+    def test_install_strip(self):
+        testdir = os.path.join(self.unit_test_dir, '103 strip')
+        self.init(testdir)
+        self.build()
+
+        destdir = self.installdir + self.prefix
+        if is_linux():
+            lib = os.path.join(destdir, self.libdir, 'liba.so')
+        else:
+            lib = os.path.join(destdir, self.libdir, 'liba.dylib')
+        install_cmd = self.meson_command + ['install', '--destdir', self.installdir]
+
+        # Check we have debug symbols by default
+        self._run(install_cmd, workdir=self.builddir)
+        if is_linux():
+            # file can detect stripped libraries on linux
+            stdout = self._run(['file', '-b', lib])
+            self.assertIn('not stripped', stdout)
+        else:
+            # on macOS we need to query dsymutil instead.
+            # Alternatively, check if __dyld_private is defined
+            # in the output of nm liba.dylib, but that is not
+            # 100% reliable, it needs linking to an external library
+            stdout = self._run(['dsymutil', '--dump-debug-map', lib])
+            self.assertIn('symbols:', stdout)
+
+        # Check debug symbols got removed with --strip
+        self._run(install_cmd + ['--strip'], workdir=self.builddir)
+        if is_linux():
+            stdout = self._run(['file', '-b', lib])
+            self.assertNotIn('not stripped', stdout)
+        else:
+            stdout = self._run(['dsymutil', '--dump-debug-map', lib])
+            self.assertNotIn('symbols:', stdout)
+
+    def test_isystem_default_removal_with_symlink(self):
+        env = get_fake_env()
+        cpp = detect_cpp_compiler(env, MachineChoice.HOST)
+        default_dirs = cpp.get_default_include_dirs()
+        default_symlinks = []
+        with tempfile.TemporaryDirectory() as tmpdir:
+            for i in range(len(default_dirs)):
+                symlink = f'{tmpdir}/default_dir{i}'
+                default_symlinks.append(symlink)
+                os.symlink(default_dirs[i], symlink)
+            self.assertFalse(cpp.compiler_args([f'-isystem{symlink}' for symlink in default_symlinks]).to_native())
+
+    def test_freezing(self):
+        testdir = os.path.join(self.unit_test_dir, '109 freeze')
+        self.init(testdir)
+        self.build()
+        with self.assertRaises(subprocess.CalledProcessError) as e:
+            self.run_tests()
+        self.assertNotIn('Traceback', e.exception.output)