Remove sysroot binutils dependency

* Link host-targeted binaries with lld
 * Add peru script for getting prebuilt sysroot
 * Add readme for prebuilt sysroots
 * Remove non-working build_sysroot_gcc.sh, rename clang version to just
   build_sysroot.sh
This commit is contained in:
Justin C. Miller
2019-07-05 17:26:24 -07:00
parent 678a12dc90
commit bb93dcef44
7 changed files with 72 additions and 237 deletions

193
scripts/build_sysroot.sh Executable file
View File

@@ -0,0 +1,193 @@
#!/usr/bin/env bash
TARGET="x86_64-elf"
NASM_VERSION="2.13.03"
LLVM_BRANCH="release_80"
TOOLS="clang lld" # lld libunwind libcxxabi libcxx"
PROJECTS="compiler-rt libcxxabi libcxx libunwind"
#RUNTIMES="compiler-rt libcxxabi libcxx libunwind"
set -e
README=$(realpath "$(dirname $0)/readme_for_prebuilt_sysroots.md")
SYSROOT=$(realpath "$(dirname $0)/../sysroot")
WORK=$(realpath "$(dirname $0)/sysroot")
mkdir -p "${SYSROOT}"
mkdir -p "${WORK}"
export CC=clang
export CXX=clang++
function build_nasm() {
if [[ ! -d "${WORK}/nasm-${NASM_VERSION}" ]]; then
echo "Downloading NASM..."
tarball="nasm-${NASM_VERSION}.tar.gz"
curl -sSOL "https://www.nasm.us/pub/nasm/releasebuilds/${NASM_VERSION}/${tarball}"
tar xzf "${tarball}" -C "${WORK}" && rm "${tarball}"
fi
mkdir -p "${WORK}/build/nasm"
pushd "${WORK}/build/nasm"
if [[ ! -f "${WORK}/build/nasm/config.cache" ]]; then
echo "Configuring NASM..."
"${WORK}/nasm-${NASM_VERSION}/configure" \
--quiet \
--config-cache \
--disable-werror \
--prefix="${SYSROOT}" \
--srcdir="${WORK}/nasm-${NASM_VERSION}"
fi
echo "Building NASM..."
(make -j && make install) > "${WORK}/build/nasm_build.log"
popd
}
function build_llvm() {
if [[ ! -d "${WORK}/llvm" ]]; then
echo "Downloading LLVM..."
git clone -q \
--branch "${LLVM_BRANCH}" \
--depth 1 \
"https://git.llvm.org/git/llvm.git" "${WORK}/llvm"
fi
for tool in ${TOOLS}; do
if [[ ! -d "${WORK}/llvm/tools/${tool}" ]]; then
echo "Downloading ${tool}..."
git clone -q \
--branch "${LLVM_BRANCH}" \
--depth 1 \
"https://git.llvm.org/git/${tool}.git" "${WORK}/llvm/tools/${tool}"
fi
done
if [[ ! -d "${WORK}/llvm/tools/clang/tools/extra" ]]; then
echo "Downloading clang-tools-extra..."
git clone -q \
--branch "${LLVM_BRANCH}" \
--depth 1 \
"https://git.llvm.org/git/clang-tools-extra.git" "${WORK}/llvm/tools/clang/tools/extra"
fi
for proj in ${PROJECTS}; do
if [[ ! -d "${WORK}/llvm/projects/${proj}" ]]; then
echo "Downloading ${proj}..."
git clone -q \
--branch "${LLVM_BRANCH}" \
--depth 1 \
"https://git.llvm.org/git/${proj}.git" "${WORK}/llvm/projects/${proj}"
fi
done
for proj in ${RUNTIMES}; do
if [[ ! -d "${WORK}/llvm/runtimes/${proj}" ]]; then
echo "Downloading ${proj}..."
git clone -q \
--branch "${LLVM_BRANCH}" \
--depth 1 \
"https://git.llvm.org/git/${proj}.git" "${WORK}/llvm/runtime/${proj}"
fi
done
mkdir -p "${WORK}/build/llvm"
pushd "${WORK}/build/llvm"
echo "Configuring LLVM..."
cmake -G Ninja \
-DCLANG_DEFAULT_RTLIB=compiler-rt \
-DCLANG_DEFAULT_STD_C=c11 \
-DCLANG_DEFAULT_STD_CXX=cxx14 \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_C_COMPILER="clang" \
-DCMAKE_CXX_COMPILER="clang++" \
-DCMAKE_CXX_FLAGS="-Wno-unused-parameter -D_LIBCPP_HAS_NO_ALIGNED_ALLOCATION -D_LIBUNWIND_IS_BAREMETAL=1 -U_LIBUNWIND_SUPPORT_DWARF_UNWIND" \
-DCMAKE_INSTALL_PREFIX="${SYSROOT}" \
-DCMAKE_MAKE_PROGRAM=`which ninja` \
-DDEFAULT_SYSROOT="${SYSROOT}" \
-DLIBCXX_CXX_ABI=libcxxabi \
-DLIBCXX_CXX_ABI_INCLUDE_PATHS="${WORK}/llvm/projects/libcxxabi/include" \
-DLIBCXX_CXX_ABI_LIBRARY_PATH=lib \
-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF \
-DLIBCXX_ENABLE_NEW_DELETE_DEFINITIONS=ON \
-DLIBCXX_ENABLE_SHARED=OFF \
-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON \
-DLIBCXX_ENABLE_THREADS=OFF \
-DLIBCXX_INCLUDE_BENCHMARKS=OFF \
-DLIBCXX_USE_COMPILER_RT=ON \
-DLIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS=OFF \
-DLIBCXXABI_ENABLE_SHARED=OFF \
-DLIBCXXABI_ENABLE_STATIC_UNWINDER=ON \
-DLIBCXXABI_ENABLE_THREADS=OFF \
-DLIBCXXABI_LIBCXX_PATH="${WORK}/llvm/projects/libcxx" \
-DLIBCXXABI_USE_COMPILER_RT=ON \
-DLIBCXXABI_USE_LLVM_UNWINDER=ON \
-DLIBUNWIND_ENABLE_SHARED=OFF \
-DLIBUNWIND_ENABLE_THREADS=OFF \
-DLIBUNWIND_USE_COMPILER_RT=ON \
-DLLVM_CONFIG_PATH="${SYSROOT}/bin/llvm-config" \
-DLLVM_DEFAULT_TARGET_TRIPLE="x86_64-unknown-elf" \
-DLLVM_ENABLE_LIBCXX=ON \
-DLLVM_ENABLE_LLD=ON \
-DLLVM_ENABLE_PIC=OFF \
-DLLVM_ENABLE_THREADS=OFF \
-DLLVM_INSTALL_BINUTILS_SYMLINKS=ON \
-DLLVM_TARGETS_TO_BUILD="X86" \
${WORK}/llvm > cmake_configure.log
# -DCMAKE_ASM_COMPILER=nasm \
# -DCMAKE_LINKER="${SYSROOT}/bin/ld.lld" \
# -DCOMPILER_RT_ENABLE_LLD=ON \
# -DLIBCXX_ENABLE_LLD=ON \
# -DLIBCXX_ENABLE_STATIC_UNWINDER=ON \
# -DLIBCXXABI_ENABLE_LLD=ON \
# -DLIBUNWIND_ENABLE_LLD=ON \
# -DLLVM_ENABLE_PROJECTS="libcxx;libcxxabi;libunwind;compiler-rt" \
# -DCOMPILER_RT_BAREMETAL_BUILD=ON \
# -DLIBCXXABI_BAREMETAL=ON \
echo "Building LLVM..."
ninja && ninja install
ninja cxx cxxabi compiler-rt
ninja install-compiler-rt install-cxx install-cxxabi
popd
}
function build_libc() {
if [[ ! -d "${WORK}/poplibc" ]]; then
echo "Downloading poplibc..."
git clone \
"https://github.com/justinian/poplibc.git" \
"${WORK}/poplibc"
else
echo "Updating poplibc..."
git -C "${WORK}/poplibc" pull
fi
pushd "${WORK}/poplibc"
echo "Building poplibc..."
pb prefix="${SYSROOT}" && ninja -C build install
popd
}
function update_links() {
for exe in `ls "${SYSROOT}/bin/${TARGET}-"*`; do
base=$(echo "$exe" | sed -e "s/${TARGET}-//")
ln -fs "${exe}" "${base}"
done
}
build_nasm
build_libc
build_llvm
update_links
export CC="${SYSROOT}/bin/clang"
export CXX="${SYSROOT}/bin/clang++"
export LD="${SYSROOT}/bin/ld"
build_libc
cp "${README}" "${SYSROOT}/README.md"