Adding upstream version 2.4.2.upstream/2.4.2upstream

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

1 files changed, 737 insertions, 0 deletions

diff --git a/buildtools/wafsamba/wscript b/buildtools/wafsamba/wscript
new file mode 100644
index 0000000..99a6237
--- /dev/null
+++ b/buildtools/wafsamba/wscript
@@ -0,0 +1,737 @@
+#!/usr/bin/env python
+
+# this is a base set of waf rules that everything else pulls in first
+
+import os, sys
+from waflib import Configure, Logs, Options, Utils, Context, Errors
+import wafsamba
+from samba_utils import symlink
+from optparse import SUPPRESS_HELP
+
+phs = os.environ.get("PYTHONHASHSEED", None)
+if phs != "1":
+    raise Errors.WafError('''PYTHONHASHSEED=1 missing! Don't use waf directly, use ./configure and make!''')
+
+# this forces configure to be re-run if any of the configure
+# sections of the build scripts change. We have to check
+# for this in sys.argv as options have not yet been parsed when
+# we need to set this. This is off by default until some issues
+# are resolved related to WAFCACHE. It will need a lot of testing
+# before it is enabled by default.
+if '--enable-auto-reconfigure' in sys.argv:
+    Configure.autoconfig = 'clobber'
+
+def default_value(option, default=''):
+    if option in Options.options.__dict__:
+        return Options.options.__dict__[option]
+    return default
+
+def options(opt):
+    opt.load('compiler_cc')
+
+    opt.load('gnu_dirs')
+
+    gr = opt.option_group('library handling options')
+
+    gr.add_option('--bundled-libraries',
+                   help=(f'''comma separated list of bundled libraries.
+
+{Context.g_module.APPNAME} includes copies of externally maintained
+system libraries (such as popt, cmocka) as well as Samba-maintained
+libraries that can be found on the system already (such as talloc,
+tdb).
+
+This option, most useful for packagers, controls if each library
+should be forced to be obtained from inside Samba (bundled), forced to
+be obtained from the system (bundling disabled, ensuing that
+dependency errors are not silently missed) or if that choice should be
+automatic (best for end users).
+
+May include !LIBNAME to disable bundling a library.
+
+Can be 'NONE' or 'ALL' [auto]'''),
+                   action="store", dest='BUNDLED_LIBS', default='')
+
+    gr.add_option('--private-libraries',
+                   help=(f'''comma separated list of normally public libraries to build instead as private libraries.
+
+By default {Context.g_module.APPNAME} will publish a number of public
+libraries for use by other software.  For Samba this would include
+libwbclient, libsmbclient and others.
+
+This allows that to be disabled, to ensure that other software does
+not use these libraries and they are placed in a private filesystem
+prefix.
+
+May include !LIBNAME to disable making a library private in order to
+limit the effect of 'ALL' '''),
+                   action="store", dest='PRIVATE_LIBS', default='')
+
+    extension_default = default_value('PRIVATE_EXTENSION_DEFAULT')
+    gr.add_option('--private-library-extension',
+                   help=("name extension for private libraries [%s]" % extension_default),
+                   action="store", dest='PRIVATE_EXTENSION', default=extension_default)
+
+    extension_exception = default_value('PRIVATE_EXTENSION_EXCEPTION')
+    gr.add_option('--private-extension-exception',
+                   help=("comma separated list of libraries to not apply extension to [%s]" % extension_exception),
+                   action="store", dest='PRIVATE_EXTENSION_EXCEPTION', default=extension_exception)
+
+    builtin_default = default_value('BUILTIN_LIBRARIES_DEFAULT')
+    gr.add_option('--builtin-libraries', help=(
+f'''comma separated list of libraries to build directly into binaries.
+
+By default {Context.g_module.APPNAME} will build a large number of
+shared libraries, to reduce binary size.  This overrides this
+behaviour and essentially statically links the specified libraries into
+each binary [{builtin_default}]'''),
+                  action="store",
+                  dest='BUILTIN_LIBRARIES', default=builtin_default)
+
+    gr.add_option('--minimum-library-version',
+                   help=(
+f'''list of minimum system library versions for otherwise bundled
+libraries.
+
+{Context.g_module.APPNAME} by default requires that, in order to match
+what is tested in our continuous integration (CI) test-suite, that the
+versions of libraries that we include match that found on the system,
+before we will select not to 'bundle'.
+
+This option, possibly useful for packagers, allows that specified
+version to be overridden (say, if it is absolutely known that the
+newer version included in this tarball has no relevant changes).
+
+Use this with extreme care
+
+(LIBNAME1:version,LIBNAME2:version)'''),
+                   action="store", dest='MINIMUM_LIBRARY_VERSION', default='')
+
+    gr.add_option('--disable-rpath',
+                   help=("Disable use of rpath for build binaries"),
+                   action="store_true", dest='disable_rpath_build', default=False)
+    gr.add_option('--disable-rpath-install',
+                   help=("Disable use of rpath for library path in installed files"),
+                   action="store_true", dest='disable_rpath_install', default=False)
+    gr.add_option('--disable-rpath-private-install',
+                   help=("Disable use of rpath for private library path in installed files"),
+                   action="store_true", dest='disable_rpath_private_install', default=False)
+    gr.add_option('--nonshared-binary',
+                   help=(
+f'''Disable use of shared libraries internal to {Context.g_module.APPNAME} for the listed binaries.
+
+The resulting binaries are 'statically linked' with regard to components provided by
+{Context.g_module.APPNAME}, but remain dynamically linked to (eg) libc.so and libgnutls.so
+
+Currently the only tested value is 'smbtorture,smbd/smbd' for Samba'''),
+                   action="store", dest='NONSHARED_BINARIES', default='')
+    gr.add_option('--disable-symbol-versions',
+                   help=("Disable use of the --version-script linker option"),
+                   action="store_true", dest='disable_symbol_versions', default=False)
+
+    opt.add_option('--with-modulesdir',
+                   help=("modules directory [PREFIX/modules]"),
+                   action="store", dest='MODULESDIR', default='${PREFIX}/modules')
+
+    opt.add_option('--with-privatelibdir',
+                   help=("private library directory [PREFIX/lib/%s]" % Context.g_module.APPNAME),
+                   action="store", dest='PRIVATELIBDIR', default=None)
+
+    opt.add_option('--with-libiconv',
+                   help='additional directory to search for libiconv',
+                   action='store', dest='iconv_open', default='/usr/local',
+                   match = ['Checking for library iconv', 'Checking for iconv_open', 'Checking for header iconv.h'])
+    opt.add_option('--without-gettext',
+                   help=("Disable use of gettext"),
+                   action="store_true", dest='disable_gettext', default=False)
+
+    gr = opt.option_group('developer options')
+
+    gr.add_option('-C',
+                   help='enable configure caching',
+                   action='store_true', dest='enable_configure_cache')
+    gr.add_option('--enable-auto-reconfigure',
+                   help='enable automatic reconfigure on build',
+                   action='store_true', dest='enable_auto_reconfigure')
+    gr.add_option('--enable-debug',
+                   help=("Turn on debugging symbols"),
+                   action="store_true", dest='debug', default=False)
+    gr.add_option('--enable-developer',
+                   help=("Turn on developer warnings and debugging"),
+                   action="store_true", dest='developer', default=False)
+    gr.add_option('--pidl-developer',
+                   help=("annotate PIDL-generated code for developers"),
+                   action="store_true", dest='pidl_developer', default=False)
+    gr.add_option('--disable-warnings-as-errors',
+                   help=("Do not treat all warnings as errors (disable -Werror)"),
+                   action="store_true", dest='disable_warnings_as_errors', default=False)
+    opt.add_option('--enable-coverage',
+                   help=("enable options necessary for code coverage "
+                         "reporting on selftest (default=no)"),
+                   action="store_true", dest='enable_coverage', default=False)
+    gr.add_option('--fatal-errors',
+                   help=("Stop compilation on first error (enable -Wfatal-errors)"),
+                   action="store_true", dest='fatal_errors', default=False)
+    gr.add_option('--enable-gccdeps',
+                   help=("Enable use of gcc -MD dependency module"),
+                   action="store_true", dest='enable_gccdeps', default=True)
+    gr.add_option('--pedantic',
+		   help=("Enable even more compiler warnings"),
+		   action='store_true', dest='pedantic', default=False)
+    gr.add_option('--git-local-changes',
+		   help=("mark version with + if local git changes"),
+		   action='store_true', dest='GIT_LOCAL_CHANGES', default=False)
+    gr.add_option('--address-sanitizer',
+                   help=("Enable address sanitizer compile and linker flags"),
+                   action="store_true", dest='address_sanitizer', default=False)
+    gr.add_option('--undefined-sanitizer',
+        help=("Enable undefined behaviour sanitizer compile and linker flags"),
+        action="store_true",
+        dest='undefined_sanitizer',
+        default=False)
+    gr.add_option('--memory-sanitizer',
+        help=("Enable memory behaviour sanitizer compile and linker flags"),
+        action="store_true",
+        dest='memory_sanitizer',
+        default=False)
+    gr.add_option('--enable-libfuzzer',
+                  help=("Build fuzzing binaries (use ADDITIONAL_CFLAGS to specify compiler options for libFuzzer or use CC=honggfuzz/hfuzz-cc)"),
+                  action="store_true", dest='enable_libfuzzer', default=False)
+    gr.add_option('--enable-afl-fuzzer',
+                  help=("Build fuzzing binaries AFL-style (typically use with CC=afl-gcc)"),
+                  action="store_true", dest='enable_afl_fuzzer', default=False)
+
+    # Fuzz targets may need additional LDFLAGS that we can't use on
+    # internal binaries like asn1_compile
+
+    gr.add_option('--fuzz-target-ldflags',
+                  help=("Linker flags to be used when building fuzz targets"),
+                  action="store", dest='FUZZ_TARGET_LDFLAGS', default='')
+
+    gr.add_option('--abi-check',
+		   help=("Check ABI signatures for libraries"),
+		   action='store_true', dest='ABI_CHECK', default=False)
+    gr.add_option('--abi-check-disable',
+		   help=("Disable ABI checking (used with --enable-developer)"),
+		   action='store_true', dest='ABI_CHECK_DISABLE', default=False)
+    gr.add_option('--abi-update',
+		   help=("Update ABI signature files for libraries"),
+		   action='store_true', dest='ABI_UPDATE', default=False)
+
+    gr.add_option('--show-deps',
+		   help=("Show dependency tree for the given target"),
+		   dest='SHOWDEPS', default='')
+
+    gr.add_option('--symbol-check',
+                  help=("check symbols in object files against project rules"),
+                  action='store_true', dest='SYMBOLCHECK', default=False)
+
+    gr.add_option('--dup-symbol-check',
+                  help=("check for duplicate symbols in object files and system libs (must be configured with --enable-developer)"),
+                  action='store_true', dest='DUP_SYMBOLCHECK', default=False)
+
+    gr.add_option('--why-needed',
+                  help=("TARGET:DEPENDENCY check why TARGET needs DEPENDENCY"),
+                  action='store', type='str', dest='WHYNEEDED', default=None)
+
+    gr.add_option('--show-duplicates',
+                  help=("Show objects which are included in multiple binaries or libraries"),
+                  action='store_true', dest='SHOW_DUPLICATES', default=False)
+
+    gr = opt.add_option_group('cross compilation options')
+
+    gr.add_option('--cross-compile',
+		   help=("configure for cross-compilation"),
+		   action='store_true', dest='CROSS_COMPILE', default=False)
+    gr.add_option('--cross-execute',
+		   help=("command prefix to use for cross-execution in configure"),
+		   action='store', dest='CROSS_EXECUTE', default='')
+    gr.add_option('--cross-answers',
+		   help=("answers to cross-compilation configuration (auto modified)"),
+		   action='store', dest='CROSS_ANSWERS', default='')
+    gr.add_option('--hostcc',
+		   help=("set host compiler when cross compiling"),
+		   action='store', dest='HOSTCC', default=False)
+
+    # we use SUPPRESS_HELP for these, as they are ignored, and are there only
+    # to allow existing RPM spec files to work
+    opt.add_option('--build',
+		   help=SUPPRESS_HELP,
+		   action='store', dest='AUTOCONF_BUILD', default='')
+    opt.add_option('--host',
+		   help=SUPPRESS_HELP,
+		   action='store', dest='AUTOCONF_HOST', default='')
+    opt.add_option('--target',
+		   help=SUPPRESS_HELP,
+		   action='store', dest='AUTOCONF_TARGET', default='')
+    opt.add_option('--program-prefix',
+		   help=SUPPRESS_HELP,
+		   action='store', dest='AUTOCONF_PROGRAM_PREFIX', default='')
+    opt.add_option('--disable-dependency-tracking',
+		   help=SUPPRESS_HELP,
+		   action='store_true', dest='AUTOCONF_DISABLE_DEPENDENCY_TRACKING', default=False)
+    opt.add_option('--disable-silent-rules',
+		   help=SUPPRESS_HELP,
+		   action='store_true', dest='AUTOCONF_DISABLE_SILENT_RULES', default=False)
+
+    gr = opt.option_group('dist options')
+    gr.add_option('--sign-release',
+                   help='sign the release tarball created by waf dist',
+                   action='store_true', dest='SIGN_RELEASE')
+    gr.add_option('--tag',
+                   help='tag release in git at the same time',
+                   type='string', action='store', dest='TAG_RELEASE')
+
+    opt.add_option('--disable-python',
+                    help='do not generate python modules',
+                    action='store_true', dest='disable_python', default=False)
+
+
+@Utils.run_once
+def configure(conf):
+    conf.env.hlist = []
+    conf.env.srcdir = conf.srcnode.abspath()
+
+    conf.define('SRCDIR', conf.env['srcdir'])
+
+    conf.SETUP_CONFIGURE_CACHE(Options.options.enable_configure_cache)
+
+    # load our local waf extensions
+    conf.load('gnu_dirs')
+    conf.load('wafsamba')
+
+    conf.CHECK_CC_ENV()
+
+    conf.load('compiler_c')
+
+    conf.CHECK_STANDARD_LIBPATH()
+
+    # we need git for 'waf dist'
+    conf.find_program('git', var='GIT')
+
+    # older gcc versions (< 4.4) does not work with gccdeps, so we have to see if the .d file is generated
+    if Options.options.enable_gccdeps:
+        # stale file removal - the configuration may pick up the old .pyc file
+        p = os.path.join(conf.env.srcdir, 'buildtools/wafsamba/gccdeps.pyc')
+        if os.path.exists(p):
+            os.remove(p)
+        conf.load('gccdeps')
+
+    # make the install paths available in environment
+    conf.env.LIBDIR = Options.options.LIBDIR or '${PREFIX}/lib'
+    conf.env.BINDIR = Options.options.BINDIR or '${PREFIX}/bin'
+    conf.env.SBINDIR = Options.options.SBINDIR or '${PREFIX}/sbin'
+    conf.env.MODULESDIR = Options.options.MODULESDIR
+    conf.env.PRIVATELIBDIR = Options.options.PRIVATELIBDIR
+    conf.env.BUNDLED_LIBS = Options.options.BUNDLED_LIBS.split(',')
+    conf.env.SYSTEM_LIBS = ()
+    conf.env.PRIVATE_LIBS = Options.options.PRIVATE_LIBS.split(',')
+    conf.env.BUILTIN_LIBRARIES = Options.options.BUILTIN_LIBRARIES.split(',')
+    conf.env.NONSHARED_BINARIES = Options.options.NONSHARED_BINARIES.split(',')
+
+    conf.env.PRIVATE_EXTENSION = Options.options.PRIVATE_EXTENSION
+    conf.env.PRIVATE_EXTENSION_EXCEPTION = Options.options.PRIVATE_EXTENSION_EXCEPTION.split(',')
+    conf.env.PRIVATE_VERSION = "%s_%s_%s" % (Context.g_module.APPNAME,
+        Context.g_module.VERSION, conf.env.PRIVATE_EXTENSION)
+
+    conf.env.CROSS_COMPILE = Options.options.CROSS_COMPILE
+    conf.env.CROSS_EXECUTE = Options.options.CROSS_EXECUTE
+    conf.env.CROSS_ANSWERS = Options.options.CROSS_ANSWERS
+    conf.env.HOSTCC        = Options.options.HOSTCC
+
+    conf.env.AUTOCONF_BUILD = Options.options.AUTOCONF_BUILD
+    conf.env.AUTOCONF_HOST  = Options.options.AUTOCONF_HOST
+    conf.env.AUTOCONF_PROGRAM_PREFIX = Options.options.AUTOCONF_PROGRAM_PREFIX
+
+    conf.env.disable_python = Options.options.disable_python
+
+    if (conf.env.AUTOCONF_HOST and
+        conf.env.AUTOCONF_BUILD and
+        conf.env.AUTOCONF_BUILD != conf.env.AUTOCONF_HOST):
+        Logs.error('ERROR: Mismatch between --build and --host. Please use --cross-compile instead')
+        sys.exit(1)
+    if conf.env.AUTOCONF_PROGRAM_PREFIX:
+        Logs.error('ERROR: --program-prefix not supported')
+        sys.exit(1)
+
+    # enable ABI checking for developers
+    conf.env.ABI_CHECK = Options.options.ABI_CHECK or Options.options.developer
+    if Options.options.ABI_CHECK_DISABLE:
+        conf.env.ABI_CHECK = False
+    try:
+        conf.find_program('gdb', mandatory=True)
+    except:
+        conf.env.ABI_CHECK = False
+
+    conf.env.enable_coverage = Options.options.enable_coverage
+    if conf.env.enable_coverage:
+        conf.ADD_LDFLAGS('-lgcov', testflags=True)
+        conf.ADD_CFLAGS('--coverage', testflags=True)
+        # disable abi check for coverage, otherwise ld will fail
+        conf.env.ABI_CHECK = False
+
+    conf.env.GIT_LOCAL_CHANGES = Options.options.GIT_LOCAL_CHANGES
+
+    conf.CHECK_UNAME()
+
+    # see if we can compile and run a simple C program
+    conf.CHECK_CODE('printf("hello world")',
+                    define='HAVE_SIMPLE_C_PROG',
+                    mandatory=True,
+                    execute=not conf.env.CROSS_COMPILE,
+                    headers='stdio.h',
+                    msg='Checking simple C program')
+
+    # Try to find the right extra flags for -Werror behaviour
+    for f in ["-Werror",       # GCC
+              "-errwarn=%all", # Sun Studio
+              "-qhalt=w",     # IBM xlc
+              "-w2",           # Tru64
+             ]:
+        if conf.CHECK_CFLAGS([f]):
+            if not 'WERROR_CFLAGS' in conf.env:
+                conf.env['WERROR_CFLAGS'] = []
+            conf.env['WERROR_CFLAGS'].extend([f])
+            break
+
+    # check which compiler/linker flags are needed for rpath support
+    if conf.CHECK_LDFLAGS(['-Wl,-rpath,.']):
+        conf.env['RPATH_ST'] = '-Wl,-rpath,%s'
+    elif conf.CHECK_LDFLAGS(['-Wl,-R,.']):
+        conf.env['RPATH_ST'] = '-Wl,-R,%s'
+
+    # check for rpath
+    if conf.CHECK_LIBRARY_SUPPORT(rpath=True):
+        support_rpath = True
+        conf.env.RPATH_ON_BUILD   = not Options.options.disable_rpath_build
+        conf.env.RPATH_ON_INSTALL = (conf.env.RPATH_ON_BUILD and
+                                     not Options.options.disable_rpath_install)
+        if not conf.env.PRIVATELIBDIR:
+            conf.env.PRIVATELIBDIR = '%s/%s' % (conf.env.LIBDIR, Context.g_module.APPNAME)
+        conf.env.RPATH_ON_INSTALL_PRIVATE = (
+            not Options.options.disable_rpath_private_install)
+    else:
+        support_rpath = False
+        conf.env.RPATH_ON_INSTALL = False
+        conf.env.RPATH_ON_BUILD   = False
+        conf.env.RPATH_ON_INSTALL_PRIVATE = False
+        if not conf.env.PRIVATELIBDIR:
+            # rpath is not possible so there is no sense in having a
+            # private library directory by default.
+            # the user can of course always override it.
+            conf.env.PRIVATELIBDIR = conf.env.LIBDIR
+
+    if (not Options.options.disable_symbol_versions and
+        conf.CHECK_LIBRARY_SUPPORT(rpath=support_rpath,
+                                   version_script=True,
+                                   msg='-Wl,--version-script support')):
+        conf.env.HAVE_LD_VERSION_SCRIPT = True
+    else:
+        conf.env.HAVE_LD_VERSION_SCRIPT = False
+
+    if conf.CHECK_CFLAGS(['-fvisibility=hidden']):
+        conf.env.VISIBILITY_CFLAGS = '-fvisibility=hidden'
+        conf.CHECK_CODE('''int main(void) { return 0; }
+                           __attribute__((visibility("default"))) void vis_foo2(void) {}\n''',
+                        cflags=conf.env.VISIBILITY_CFLAGS,
+                        strict=True,
+                        define='HAVE_VISIBILITY_ATTR', addmain=False)
+
+    # check HAVE_CONSTRUCTOR_ATTRIBUTE
+    conf.CHECK_CODE('''
+            void test_constructor_attribute(void) __attribute__ ((constructor));
+
+            void test_constructor_attribute(void)
+            {
+                return;
+            }
+
+            int main(void) {
+                return 0;
+            }
+            ''',
+            'HAVE_CONSTRUCTOR_ATTRIBUTE',
+            addmain=False,
+            strict=True,
+            msg='Checking for library constructor support')
+
+    # check HAVE_PRAGMA_INIT alternatively
+    if not conf.env.HAVE_CONSTRUCTOR_ATTRIBUTE:
+	    conf.CHECK_CODE('''
+                #pragma init (test_init)
+
+                void test_init(void)
+                {
+                    return;
+                }
+
+                int main(void) {
+                    return 0;
+                }
+                ''',
+                'HAVE_PRAGMA_INIT',
+                addmain=False,
+                strict=True,
+                msg='Checking for pragma init support')
+
+    # check HAVE_DESTRUCTOR_ATTRIBUTE
+    conf.CHECK_CODE('''
+            void test_destructor_attribute(void) __attribute__ ((destructor));
+
+            void test_destructor_attribute(void)
+            {
+                return;
+            }
+
+            int main(void) {
+                return 0;
+            }
+            ''',
+            'HAVE_DESTRUCTOR_ATTRIBUTE',
+            addmain=False,
+            strict=True,
+            msg='Checking for library destructor support')
+
+    # check HAVE_PRAGMA_FINI alternatively
+    if not conf.env.HAVE_DESTRUCTOR_ATTRIBUTE:
+	    conf.CHECK_CODE('''
+                #pragma fini (test_fini)
+
+                void test_fini(void)
+                {
+                    return;
+                }
+
+                int main(void) {
+                    return 0;
+                }
+                ''',
+                'HAVE_PRAGMA_FINI',
+                addmain=False,
+                strict=True,
+                msg='Checking for pragma fini support')
+
+    conf.CHECK_CODE('''
+            void test_attribute(void) __attribute__ (());
+
+            void test_attribute(void)
+            {
+                return;
+            }
+
+            int main(void) {
+                return 0;
+            }
+            ''',
+            'HAVE___ATTRIBUTE__',
+            addmain=False,
+            strict=True,
+            msg='Checking for __attribute__')
+
+    # Solaris by default uses draft versions of some functions unless you set
+    # _POSIX_PTHREAD_SEMANTICS
+    if sys.platform.startswith('sunos'):
+        conf.DEFINE('_POSIX_PTHREAD_SEMANTICS', 1)
+
+    if sys.platform.startswith('aix'):
+        conf.DEFINE('_ALL_SOURCE', 1, add_to_cflags=True)
+        # Might not be needed if ALL_SOURCE is defined
+        # conf.DEFINE('_XOPEN_SOURCE', 600, add_to_cflags=True)
+
+    # we should use the PIC options in waf instead
+    # Some compiler didn't support -fPIC but just print a warning
+    if conf.env['COMPILER_CC'] == "suncc":
+        conf.ADD_CFLAGS('-KPIC', testflags=True)
+        # we really want define here as we need to have this
+        # define even during the tests otherwise detection of
+        # boolean is broken
+        conf.DEFINE('_STDC_C99', 1, add_to_cflags=True)
+        conf.DEFINE('_XPG6', 1, add_to_cflags=True)
+    else:
+        conf.ADD_CFLAGS('-fPIC', testflags=True)
+
+    # On Solaris 8 with suncc (at least) the flags for the linker to define the name of the
+    # library are not always working (if the command line is very very long and with a lot
+    # of files)
+
+    if conf.env['COMPILER_CC'] == "suncc":
+        save = conf.env['SONAME_ST']
+        conf.env['SONAME_ST'] = '-Wl,-h,%s'
+        if not conf.CHECK_SHLIB_INTRASINC_NAME_FLAGS("Checking if flags %s are ok" % conf.env['SONAME_ST']):
+            conf.env['SONAME_ST'] = save
+
+    conf.CHECK_INLINE()
+
+    # check for pkgconfig
+    conf.CHECK_CFG(atleast_pkgconfig_version='0.0.0')
+
+    conf.DEFINE('_GNU_SOURCE', 1, add_to_cflags=True)
+    conf.DEFINE('_XOPEN_SOURCE_EXTENDED', 1, add_to_cflags=True)
+
+    #
+    # Needs to be defined before std*.h and string*.h are included
+    # As Python.h already brings string.h we need it in CFLAGS.
+    # See memset_s() details here:
+    # https://en.cppreference.com/w/c/string/byte/memset
+    #
+    if conf.CHECK_CFLAGS(['-D__STDC_WANT_LIB_EXT1__=1']):
+        conf.ADD_CFLAGS('-D__STDC_WANT_LIB_EXT1__=1')
+
+    # on Tru64 certain features are only available with _OSF_SOURCE set to 1
+    # and _XOPEN_SOURCE set to 600
+    if conf.env['SYSTEM_UNAME_SYSNAME'] == 'OSF1':
+        conf.DEFINE('_OSF_SOURCE', 1, add_to_cflags=True)
+        conf.DEFINE('_XOPEN_SOURCE', 600, add_to_cflags=True)
+
+    # SCM_RIGHTS is only avail if _XOPEN_SOURCE iѕ defined on IRIX
+    if conf.env['SYSTEM_UNAME_SYSNAME'] == 'IRIX':
+        conf.DEFINE('_XOPEN_SOURCE', 600, add_to_cflags=True)
+        conf.DEFINE('_BSD_TYPES', 1, add_to_cflags=True)
+
+    # Try to find the right extra flags for C99 initialisers
+    for f in ["", "-AC99", "-qlanglvl=extc99", "-qlanglvl=stdc99", "-c99"]:
+        if conf.CHECK_CFLAGS([f], '''
+struct foo {int x;char y;};
+struct foo bar = { .y = 'X', .x = 1 };
+'''):
+            if f != "":
+                conf.ADD_CFLAGS(f)
+            break
+
+    # get the base headers we'll use for the rest of the tests
+    conf.CHECK_HEADERS('stdio.h sys/types.h sys/stat.h stdlib.h stddef.h memory.h string.h',
+                       add_headers=True)
+    conf.CHECK_HEADERS('strings.h inttypes.h stdint.h unistd.h minix/config.h', add_headers=True)
+    conf.CHECK_HEADERS('ctype.h', add_headers=True)
+
+    if sys.platform == 'darwin':
+        conf.DEFINE('_DARWIN_C_SOURCE', 1, add_to_cflags=True)
+        conf.DEFINE('_DARWIN_UNLIMITED_GETGROUPS', 1, add_to_cflags=True)
+    else:
+        conf.CHECK_HEADERS('standards.h', add_headers=True)
+
+    conf.CHECK_HEADERS('stdbool.h stdint.h stdarg.h vararg.h', add_headers=True)
+    conf.CHECK_HEADERS('limits.h assert.h')
+
+    # see if we need special largefile flags
+    if not conf.CHECK_LARGEFILE():
+        raise Errors.WafError('Samba requires large file support, but not available on this platform: sizeof(off_t) < 8')
+
+    if conf.env.HAVE_STDDEF_H and conf.env.HAVE_STDLIB_H:
+        conf.DEFINE('STDC_HEADERS', 1)
+
+    conf.CHECK_HEADERS('sys/time.h time.h', together=True)
+
+    if conf.env.HAVE_SYS_TIME_H and conf.env.HAVE_TIME_H:
+        conf.DEFINE('TIME_WITH_SYS_TIME', 1)
+
+    # cope with different extensions for libraries
+    (root, ext) = os.path.splitext(conf.env.cshlib_PATTERN)
+    if ext[0] == '.':
+        conf.define('SHLIBEXT', ext[1:], quote=True)
+    else:
+        conf.define('SHLIBEXT', "so", quote=True)
+
+    # First try a header check for cross-compile friendliness
+    conf.CHECK_CODE(code = """#ifdef __BYTE_ORDER
+                        #define B __BYTE_ORDER
+                        #elif defined(BYTE_ORDER)
+                        #define B BYTE_ORDER
+                        #endif
+
+                        #ifdef __LITTLE_ENDIAN
+                        #define LITTLE __LITTLE_ENDIAN
+                        #elif defined(LITTLE_ENDIAN)
+                        #define LITTLE LITTLE_ENDIAN
+                        #endif
+
+                        #if !defined(LITTLE) || !defined(B) || LITTLE != B
+                        #error Not little endian.
+                        #endif
+                        int main(void) { return 0; }\n""",
+                            addmain=False,
+                            headers="endian.h sys/endian.h",
+                            define="HAVE_LITTLE_ENDIAN")
+    conf.CHECK_CODE(code = """#ifdef __BYTE_ORDER
+                        #define B __BYTE_ORDER
+                        #elif defined(BYTE_ORDER)
+                        #define B BYTE_ORDER
+                        #endif
+
+                        #ifdef __BIG_ENDIAN
+                        #define BIG __BIG_ENDIAN
+                        #elif defined(BIG_ENDIAN)
+                        #define BIG BIG_ENDIAN
+                        #endif
+
+                        #if !defined(BIG) || !defined(B) || BIG != B
+                        #error Not big endian.
+                        #endif
+                        int main(void) { return 0; }\n""",
+                            addmain=False,
+                            headers="endian.h sys/endian.h",
+                            define="HAVE_BIG_ENDIAN")
+
+    if not conf.CONFIG_SET("HAVE_BIG_ENDIAN") and not conf.CONFIG_SET("HAVE_LITTLE_ENDIAN"):
+        # That didn't work!  Do runtime test.
+        conf.CHECK_CODE("""union { int i; char c[sizeof(int)]; } u;
+            u.i = 0x01020304;
+            return u.c[0] == 0x04 && u.c[1] == 0x03 && u.c[2] == 0x02 && u.c[3] == 0x01 ? 0 : 1;""",
+                          addmain=True, execute=True,
+                          define='HAVE_LITTLE_ENDIAN',
+                          msg="Checking for HAVE_LITTLE_ENDIAN - runtime")
+        conf.CHECK_CODE("""union { int i; char c[sizeof(int)]; } u;
+            u.i = 0x01020304;
+            return u.c[0] == 0x01 && u.c[1] == 0x02 && u.c[2] == 0x03 && u.c[3] == 0x04 ? 0 : 1;""",
+                          addmain=True, execute=True,
+                          define='HAVE_BIG_ENDIAN',
+                          msg="Checking for HAVE_BIG_ENDIAN - runtime")
+
+    # Extra sanity check.
+    if conf.CONFIG_SET("HAVE_BIG_ENDIAN") == conf.CONFIG_SET("HAVE_LITTLE_ENDIAN"):
+        Logs.error("Failed endian determination.  The PDP-11 is back?")
+        sys.exit(1)
+    else:
+        if conf.CONFIG_SET("HAVE_BIG_ENDIAN"):
+            conf.DEFINE('WORDS_BIGENDIAN', 1)
+
+    # check if signal() takes a void function
+    if conf.CHECK_CODE('return *(signal (0, 0)) (0) == 1',
+                       define='RETSIGTYPE_INT',
+                       execute=False,
+                       headers='signal.h',
+                       msg='Checking if signal handlers return int'):
+        conf.DEFINE('RETSIGTYPE', 'int')
+    else:
+        conf.DEFINE('RETSIGTYPE', 'void')
+
+    conf.CHECK_VARIABLE('__FUNCTION__', define='HAVE_FUNCTION_MACRO')
+
+    conf.CHECK_CODE('va_list ap1,ap2; va_copy(ap1,ap2)',
+                    define="HAVE_VA_COPY",
+                    msg="Checking for va_copy")
+
+    conf.env.enable_fuzzing = False
+
+    conf.env.enable_libfuzzer = Options.options.enable_libfuzzer
+    conf.env.enable_afl_fuzzer = Options.options.enable_afl_fuzzer
+    if conf.env.enable_libfuzzer or conf.env.enable_afl_fuzzer:
+        conf.env.enable_fuzzing = True
+        conf.DEFINE('FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION', 1)
+        conf.env.FUZZ_TARGET_LDFLAGS = Options.options.FUZZ_TARGET_LDFLAGS
+
+    conf.SAMBA_BUILD_ENV()
+
+
+def build(bld):
+    # give a more useful message if the source directory has moved
+    curdir = bld.path.abspath()
+    srcdir = bld.srcnode.abspath()
+    relpath = os.path.relpath(curdir, srcdir)
+    if relpath.find('../') != -1:
+        Logs.error('bld.path %s is not a child of %s' % (curdir, srcdir))
+        raise Errors.WafError('''The top source directory has moved. Please run distclean and reconfigure''')
+
+    bld.SETUP_BUILD_GROUPS()
+    bld.ENFORCE_GROUP_ORDERING()
+    bld.CHECK_PROJECT_RULES()