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dnl This Source Code Form is subject to the terms of the Mozilla Public
dnl License, v. 2.0. If a copy of the MPL was not distributed with this
dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
AC_DEFUN([MOZ_CONFIG_CLANG_PLUGIN], [
if test -n "$ENABLE_CLANG_PLUGIN"; then
dnl For some reason the llvm-config downloaded from clang.llvm.org for clang3_8
dnl produces a -isysroot flag for a sysroot which might not ship when passed
dnl --cxxflags. We use sed to remove this argument so that builds work on OSX
dnl
dnl For a similar reason, we remove any -gcc-toolchain arguments, since the
dnl directories specified by such arguments might not exist on the current
dnl machine.
LLVM_CXXFLAGS=`$LLVM_CONFIG --cxxflags | sed -e 's/-isysroot [[^ ]]*//' -e 's/-gcc-toolchain [[^ ]]*//'`
LLVM_LDFLAGS=`$LLVM_CONFIG --ldflags | tr '\n' ' '`
if test "${HOST_OS_ARCH}" = "Darwin"; then
dnl We need to make sure that we use the symbols coming from the clang
dnl binary. In order to do this, we need to pass -flat_namespace and
dnl -undefined suppress to the linker. This makes sure that we link the
dnl symbols into the flat namespace provided by clang, and thus get
dnl access to all of the symbols which are undefined in our dylib as we
dnl are building it right now, and also that we don't fail the build
dnl due to undefined symbols (which will be provided by clang).
CLANG_LDFLAGS="-Wl,-flat_namespace -Wl,-undefined,suppress"
dnl We are loaded into clang, so we don't need to link to very many things,
dnl we just need to link to clangASTMatchers because it is not used by clang
CLANG_LDFLAGS="$CLANG_LDFLAGS `$LLVM_CONFIG --prefix`/lib/libclangASTMatchers.a"
dnl We need to remove -L/path/to/clang/lib from LDFLAGS to ensure that we
dnl don't accidentally link against the libc++ there which is a newer
dnl version that what our build machines have installed.
LLVM_LDFLAGS=`echo "$LLVM_LDFLAGS" | sed -E 's/-L[[^ ]]+\/clang\/lib//'`
elif test "${HOST_OS_ARCH}" = "WINNT"; then
CLANG_LDFLAGS="clangASTMatchers.lib clang.lib"
else
CLANG_LDFLAGS="-lclangASTMatchers"
fi
if test -n "$CLANG_CL"; then
dnl The llvm-config coming with clang-cl may give us arguments in the
dnl /ARG form, which in msys will be interpreted as a path name. So we
dnl need to split the args and convert the leading slashes that we find
dnl into a dash.
LLVM_REPLACE_CXXFLAGS=''
for arg in $LLVM_CXXFLAGS; do
dnl The following expression replaces a leading slash with a dash.
dnl Also replace any backslashes with forward slash.
arg=`echo "$arg"|sed -e 's/^\//-/' -e 's/\\\\/\//g'`
LLVM_REPLACE_CXXFLAGS="$LLVM_REPLACE_CXXFLAGS $arg"
done
LLVM_CXXFLAGS="$LLVM_REPLACE_CXXFLAGS"
dnl We'll also want to replace `-std:` with `-Xclang -std=` so that
dnl LLVM_CXXFLAGS can correctly override the `-Xclang -std=` set by
dnl toolchain.configure.
LLVM_CXXFLAGS=`echo "$LLVM_CXXFLAGS"|sed -e 's/ \(-Xclang \|\)-std[[:=]]/ -Xclang -std=/'`
LLVM_REPLACE_LDFLAGS=''
for arg in $LLVM_LDFLAGS; do
dnl The following expression replaces a leading slash with a dash.
dnl Also replace any backslashes with forward slash.
arg=`echo "$arg"|sed -e 's/^\//-/' -e 's/\\\\/\//g'`
LLVM_REPLACE_LDFLAGS="$LLVM_REPLACE_LDFLAGS $arg"
done
LLVM_LDFLAGS="$LLVM_REPLACE_LDFLAGS"
CLANG_REPLACE_LDFLAGS=''
for arg in $CLANG_LDFLAGS; do
dnl The following expression replaces a leading slash with a dash.
dnl Also replace any backslashes with forward slash.
arg=`echo "$arg"|sed -e 's/^\//-/' -e 's/\\\\/\//g'`
CLANG_REPLACE_LDFLAGS="$CLANG_REPLACE_LDFLAGS $arg"
done
CLANG_LDFLAGS="$CLANG_REPLACE_LDFLAGS"
fi
CLANG_PLUGIN_FLAGS="-Xclang -load -Xclang $CLANG_PLUGIN -Xclang -add-plugin -Xclang moz-check"
AC_DEFINE(MOZ_CLANG_PLUGIN)
fi
if test -n "$ENABLE_MOZSEARCH_PLUGIN"; then
if test -z "${ENABLE_CLANG_PLUGIN}"; then
AC_MSG_ERROR([Can't use mozsearch plugin without --enable-clang-plugin.])
fi
CLANG_PLUGIN_FLAGS="$CLANG_PLUGIN_FLAGS -Xclang -add-plugin -Xclang mozsearch-index"
dnl Parameters are: srcdir, outdir (path where output JSON is stored), objdir.
CLANG_PLUGIN_FLAGS="$CLANG_PLUGIN_FLAGS -Xclang -plugin-arg-mozsearch-index -Xclang $_topsrcdir"
CLANG_PLUGIN_FLAGS="$CLANG_PLUGIN_FLAGS -Xclang -plugin-arg-mozsearch-index -Xclang $_objdir/mozsearch_index"
CLANG_PLUGIN_FLAGS="$CLANG_PLUGIN_FLAGS -Xclang -plugin-arg-mozsearch-index -Xclang $_objdir"
AC_DEFINE(MOZ_MOZSEARCH_PLUGIN)
fi
AC_SUBST_LIST(CLANG_PLUGIN_FLAGS)
AC_SUBST_LIST(LLVM_CXXFLAGS)
AC_SUBST_LIST(LLVM_LDFLAGS)
AC_SUBST_LIST(CLANG_LDFLAGS)
AC_SUBST(ENABLE_CLANG_PLUGIN)
AC_SUBST(ENABLE_CLANG_PLUGIN_ALPHA)
AC_SUBST(ENABLE_MOZSEARCH_PLUGIN)
])
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