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gecko-dev
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gecko-dev/taskcluster/scripts/misc/build-clang-8-mingw.sh

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#!/bin/bash
set -x -e -v
# This script is for building a mingw-clang toolchain for use on Linux.
if [[ $# -eq 0 ]]; then
echo "Provide either x86 or x64 to specify a toolchain."
exit 1;
elif [ "$1" == "x86" ]; then
machine="i686"
compiler_rt_machine="i386"
crt_flags="--enable-lib32 --disable-lib64"
WRAPPER_FLAGS="-fsjlj-exceptions"
elif [ "$1" == "x64" ]; then
machine="x86_64"
compiler_rt_machine="x86_64"
crt_flags="--disable-lib32 --enable-lib64"
WRAPPER_FLAGS=""
else
echo "Provide either x86 or x64 to specify a toolchain."
exit 1;
fi
WORKSPACE=$HOME/workspace
HOME_DIR=$WORKSPACE/build
UPLOAD_DIR=$HOME/artifacts
TOOLCHAIN_DIR=$WORKSPACE/moz-toolchain
INSTALL_DIR=$TOOLCHAIN_DIR/build/stage3/clang
CROSS_PREFIX_DIR=$INSTALL_DIR/$machine-w64-mingw32
SRC_DIR=$TOOLCHAIN_DIR/src
make_flags="-j$(nproc)"
mingw_version=6c8dfd0765df2d9afd845f74285d803dde4d35c3
libunwind_version=1f89d78bb488bc71cfdee8281fc0834e9fbe5dce
llvm_mingw_version=53db1c3a4c9c81972b70556a5ba5cd6ccd8e6e7d
binutils_version=2.27
binutils_ext=bz2
binutils_sha=369737ce51587f92466041a97ab7d2358c6d9e1b6490b3940eb09fb0a9a6ac88
# This is default value of _WIN32_WINNT. Gecko configure script explicitly sets this,
# so this is not used to build Gecko itself. We default to 0x601, which is Windows 7.
default_win32_winnt=0x601
cd $HOME_DIR/src
. taskcluster/scripts/misc/tooltool-download.sh
patch_file="$(pwd)/taskcluster/scripts/misc/mingw-winrt.patch"
prepare() {
mkdir -p $TOOLCHAIN_DIR
touch $TOOLCHAIN_DIR/.build-clang
mkdir -p $SRC_DIR
pushd $SRC_DIR
git clone -n git://git.code.sf.net/p/mingw-w64/mingw-w64
pushd mingw-w64
git checkout $mingw_version
patch -p1 <$patch_file
popd
git clone https://github.com/llvm-mirror/libunwind.git
pushd libunwind
git checkout $libunwind_version
popd
git clone https://github.com/mstorsjo/llvm-mingw.git
pushd llvm-mingw
git checkout $llvm_mingw_version
popd
wget -c --progress=dot:mega ftp://ftp.gnu.org/gnu/binutils/binutils-$binutils_version.tar.$binutils_ext
if [ "$(sha256sum binutils-$binutils_version.tar.$binutils_ext)" != "$binutils_sha binutils-$binutils_version.tar.$binutils_ext" ];
then
echo Corrupted binutils archive
exit 1
fi
tar -jxf binutils-$binutils_version.tar.$binutils_ext
popd
}
install_wrappers() {
pushd $INSTALL_DIR/bin
compiler_flags="--sysroot \$DIR/../$machine-w64-mingw32 -rtlib=compiler-rt -stdlib=libc++ -fuse-ld=lld $WRAPPER_FLAGS -fuse-cxa-atexit -Qunused-arguments"
cat <<EOF >$machine-w64-mingw32-clang
#!/bin/sh
DIR="\$(cd "\$(dirname "\$0")" && pwd)"
\$DIR/clang -target $machine-w64-mingw32 $compiler_flags "\$@"
EOF
chmod +x $machine-w64-mingw32-clang
cat <<EOF >$machine-w64-mingw32-clang++
#!/bin/sh
DIR="\$(cd "\$(dirname "\$0")" && pwd)"
\$DIR/clang -target $machine-w64-mingw32 --driver-mode=g++ $compiler_flags "\$@"
EOF
chmod +x $machine-w64-mingw32-clang++
CC="$machine-w64-mingw32-clang"
CXX="$machine-w64-mingw32-clang++"
popd
}
build_mingw() {
mkdir mingw-w64-headers
pushd mingw-w64-headers
$SRC_DIR/mingw-w64/mingw-w64-headers/configure --host=$machine-w64-mingw32 \
--enable-sdk=all \
--enable-idl \
--with-default-msvcrt=ucrt \
--with-default-win32-winnt=$default_win32_winnt \
--prefix=$CROSS_PREFIX_DIR
make $make_flags install
popd
mkdir mingw-w64-crt
pushd mingw-w64-crt
$SRC_DIR/mingw-w64/mingw-w64-crt/configure --host=$machine-w64-mingw32 \
$crt_flags \
--with-default-msvcrt=ucrt \
CC="$CC" \
AR=llvm-ar \
RANLIB=llvm-ranlib \
DLLTOOL=llvm-dlltool \
--prefix=$CROSS_PREFIX_DIR
make $make_flags
make $make_flags install
popd
mkdir widl
pushd widl
$SRC_DIR/mingw-w64/mingw-w64-tools/widl/configure --target=$machine-w64-mingw32 --prefix=$INSTALL_DIR
make $make_flags
make $make_flags install
popd
}
build_compiler_rt() {
CLANG_VERSION=$(basename $(dirname $(dirname $(dirname $($CC --print-libgcc-file-name -rtlib=compiler-rt)))))
mkdir compiler-rt
pushd compiler-rt
cmake \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_C_COMPILER=$CC \
-DCMAKE_SYSTEM_NAME=Windows \
-DCMAKE_AR=$INSTALL_DIR/bin/llvm-ar \
-DCMAKE_RANLIB=$INSTALL_DIR/bin/llvm-ranlib \
-DCMAKE_C_COMPILER_WORKS=1 \
-DCMAKE_C_COMPILER_TARGET=$compiler_rt_machine-windows-gnu \
-DCOMPILER_RT_DEFAULT_TARGET_ONLY=TRUE \
$SRC_DIR/compiler-rt/lib/builtins
make $make_flags
mkdir -p $INSTALL_DIR/lib/clang/$CLANG_VERSION/lib/windows
cp lib/windows/libclang_rt.builtins-$compiler_rt_machine.a $INSTALL_DIR/lib/clang/$CLANG_VERSION/lib/windows/
popd
}
merge_libs() {
cat <<EOF |llvm-ar -M
CREATE tmp.a
ADDLIB $1
ADDLIB $2
SAVE
END
EOF
llvm-ranlib tmp.a
mv tmp.a $1
}
build_libcxx() {
# Below, we specify -g -gcodeview to build static libraries with debug information.
# Because we're not distributing these builds, this is fine. If one were to distribute
# the builds, perhaps one would want to make those flags conditional or investigation
# other options.
DEBUG_FLAGS="-g -gcodeview"
mkdir libunwind
pushd libunwind
cmake \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX=$CROSS_PREFIX_DIR \
-DCMAKE_C_COMPILER=$CC \
-DCMAKE_CXX_COMPILER=$CXX \
-DCMAKE_CROSSCOMPILING=TRUE \
-DCMAKE_SYSROOT=$CROSS_PREFIX_DIR \
-DCMAKE_SYSTEM_NAME=Windows \
-DCMAKE_C_COMPILER_WORKS=TRUE \
-DCMAKE_CXX_COMPILER_WORKS=TRUE \
-DCMAKE_AR=$INSTALL_DIR/bin/llvm-ar \
-DCMAKE_RANLIB=$INSTALL_DIR/bin/llvm-ranlib \
-DLLVM_NO_OLD_LIBSTDCXX=TRUE \
-DCXX_SUPPORTS_CXX11=TRUE \
-DLIBUNWIND_USE_COMPILER_RT=TRUE \
-DLIBUNWIND_ENABLE_THREADS=TRUE \
-DLIBUNWIND_ENABLE_SHARED=FALSE \
-DLIBUNWIND_ENABLE_CROSS_UNWINDING=FALSE \
-DCMAKE_CXX_FLAGS="${DEBUG_FLAGS} -nostdinc++ -I$SRC_DIR/libcxx/include -DPSAPI_VERSION=2" \
$SRC_DIR/libunwind
make $make_flags
make $make_flags install
popd
mkdir libcxxabi
pushd libcxxabi
cmake \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX=$CROSS_PREFIX_DIR \
-DCMAKE_C_COMPILER=$CC \
-DCMAKE_CXX_COMPILER=$CXX \
-DCMAKE_CROSSCOMPILING=TRUE \
-DCMAKE_SYSTEM_NAME=Windows \
-DCMAKE_C_COMPILER_WORKS=TRUE \
-DCMAKE_CXX_COMPILER_WORKS=TRUE \
-DCMAKE_SYSROOT=$CROSS_PREFIX_DIR \
-DCMAKE_AR=$INSTALL_DIR/bin/llvm-ar \
-DCMAKE_RANLIB=$INSTALL_DIR/bin/llvm-ranlib \
-DLIBCXXABI_USE_COMPILER_RT=ON \
-DLIBCXXABI_ENABLE_EXCEPTIONS=ON \
-DLIBCXXABI_ENABLE_THREADS=ON \
-DLIBCXXABI_TARGET_TRIPLE=$machine-w64-mingw32 \
-DLIBCXXABI_ENABLE_SHARED=OFF \
-DLIBCXXABI_LIBCXX_INCLUDES=$SRC_DIR/libcxx/include \
-DLLVM_NO_OLD_LIBSTDCXX=TRUE \
-DCXX_SUPPORTS_CXX11=TRUE \
-DCMAKE_CXX_FLAGS="${DEBUG_FLAGS} -D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS -D_LIBCPP_HAS_THREAD_API_WIN32" \
$SRC_DIR/libcxxabi
make $make_flags VERBOSE=1
popd
mkdir libcxx
pushd libcxx
cmake \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX=$CROSS_PREFIX_DIR \
-DCMAKE_C_COMPILER=$CC \
-DCMAKE_CXX_COMPILER=$CXX \
-DCMAKE_CROSSCOMPILING=TRUE \
-DCMAKE_SYSTEM_NAME=Windows \
-DCMAKE_C_COMPILER_WORKS=TRUE \
-DCMAKE_CXX_COMPILER_WORKS=TRUE \
-DCMAKE_AR=$INSTALL_DIR/bin/llvm-ar \
-DCMAKE_RANLIB=$INSTALL_DIR/bin/llvm-ranlib \
-DLIBCXX_USE_COMPILER_RT=ON \
-DLIBCXX_INSTALL_HEADERS=ON \
-DLIBCXX_ENABLE_EXCEPTIONS=ON \
-DLIBCXX_ENABLE_THREADS=ON \
-DLIBCXX_HAS_WIN32_THREAD_API=ON \
-DLIBCXX_ENABLE_MONOTONIC_CLOCK=ON \
-DLIBCXX_ENABLE_SHARED=OFF \
-DLIBCXX_SUPPORTS_STD_EQ_CXX11_FLAG=TRUE \
-DLIBCXX_HAVE_CXX_ATOMICS_WITHOUT_LIB=TRUE \
-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF \
-DLIBCXX_ENABLE_FILESYSTEM=OFF \
-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=TRUE \
-DLIBCXX_CXX_ABI=libcxxabi \
-DLIBCXX_CXX_ABI_INCLUDE_PATHS=$SRC_DIR/libcxxabi/include \
-DLIBCXX_CXX_ABI_LIBRARY_PATH=../libcxxabi/lib \
-DCMAKE_CXX_FLAGS="${DEBUG_FLAGS} -D_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS" \
$SRC_DIR/libcxx
make $make_flags VERBOSE=1
make $make_flags install
# libc++.a depends on libunwind.a. Whild linker will automatically link
# to libc++.a in C++ mode, it won't pick libunwind.a, requiring caller
# to explicitly pass -lunwind. Wo work around that, we merge libunwind.a
# into libc++.a.
merge_libs $CROSS_PREFIX_DIR/lib/libc++.a $CROSS_PREFIX_DIR/lib/libunwind.a
popd
}
build_utils() {
mkdir binutils
pushd binutils
$SRC_DIR/binutils-$binutils_version/configure --prefix=$INSTALL_DIR \
--disable-multilib \
--disable-nls \
--target=$machine-w64-mingw32
make $make_flags
# Manually install only nm
cp binutils/nm-new $INSTALL_DIR/bin/$machine-w64-mingw32-nm
pushd $INSTALL_DIR/bin/
ln -s llvm-readobj $machine-w64-mingw32-readobj
./clang $SRC_DIR/llvm-mingw/wrappers/windres-wrapper.c -O2 -Wl,-s -o $machine-w64-mingw32-windres
popd
popd
}
export PATH=$INSTALL_DIR/bin:$PATH
prepare
# gets a bit too verbose here
set +x
cd build/build-clang
# |mach python| sets up a virtualenv for us!
../../mach python ./build-clang.py -c clang-8-mingw.json --skip-tar
set -x
pushd $TOOLCHAIN_DIR/build
install_wrappers
build_mingw
build_compiler_rt
build_libcxx
build_utils
popd
# Put a tarball in the artifacts dir
mkdir -p $UPLOAD_DIR
pushd $(dirname $INSTALL_DIR)
tar caf clangmingw.tar.xz clang
mv clangmingw.tar.xz $UPLOAD_DIR
popd
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