LLVM12: Building LLVM+clang for llvmtools fails #17
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dslm4515
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dslm4515
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I used this command to configure the source: |
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My complete preference. I wrap every command with popd
# Rename the LLVM source directory to ${LLVMSRC}.
mv -v llvm-12.0.0.src "$LLVMSRC" && pushd "$LLVMSRC"
# Decompress clang, lld, and compiler-rt to correct directories.
pushd "${LLVMSRC}/projects/" && \
tar xf ../../pkgs/compiler-rt-12.0.0.src.tar.xz && mv -v compiler-rt-12.0.0.src compiler-rt
popd
pushd "${LLVMSRC}/tools/" && \
tar xf ../../pkgs/clang-12.0.0.src.tar.xz && mv -v clang-12.0.0.src clang
tar xf ../../pkgs/lld-12.0.0.src.tar.xz && mv -v lld-12.0.0.src lld
popd
# Apply patches (from Void Linux).
../patches/llvm-12/stage1-appatch
# Disable sanitizers for musl, fixing "early build failure".
sed -i 's|set(COMPILER_RT_HAS_SANITIZER_COMMON TRUE)|set(COMPILER_RT_HAS_SANITIZER_COMMON FALSE)|' \
projects/compiler-rt/cmake/config-ix.cmake
# Set default compiler to new symlink from Stage-0 Clang/LLVM.
# Sets C and C++ compiler's build flags to reduce debug symbols.
CC="${CMLFS_TARGET}-clang" CFLAGS="-g -g1"
CXX="${CMLFS_TARGET}-clang++" CXXFLAGS="-g -g1"
export CC CXX CFLAGS CXXFLAGS
# Update host/target triple detection.
cp -v ../files/config.guess cmake/
# Configure source.
cmake -B build \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX="/llvmtools" \
-DLLVM_INSTALL_TOOLCHAIN_ONLY=ON \
-DLLVM_LINK_LLVM_DYLIB=ON \
-DLLVM_BUILD_LLVM_DYLIB=ON \
-DLLVM_BUILD_TESTS=OFF \
-DLLVM_ENABLE_LIBEDIT=OFF \
-DLLVM_ENABLE_LIBXML2=OFF \
-DLLVM_ENABLE_LIBCXX=ON \
-DLLVM_INCLUDE_GO_TESTS=OFF \
-DLLVM_INCLUDE_TESTS=OFF \
-DLLVM_INCLUDE_DOCS=OFF \
-DLLVM_INCLUDE_EXAMPLES=OFF \
-DLLVM_INCLUDE_BENCHMARKS=OFF \
-DLLVM_DEFAULT_TARGET_TRIPLE="x86_64-pc-linux-musl" \
-DLLVM_HOST_TRIPLE="x86_64-pc-linux-musl" \
-DLLVM_TARGET_ARCH="X86" \
-DLLVM_TARGETS_TO_BUILD="X86" \
-DCOMPILER_RT_DEFAULT_TARGET_TRIPLE="x86_64-pc-linux-musl" \
-DCOMPILER_RT_BUILD_SANITIZERS=OFF \
-DCOMPILER_RT_BUILD_XRAY=OFF \
-DCOMPILER_RT_BUILD_PROFILE=OFF \
-DCOMPILER_RT_BUILD_LIBFUZZER=OFF \
-DCOMPILER_RT_USE_BUILTINS_LIBRARY=ON \
-DCLANG_DEFAULT_CXX_STDLIB=libc++ \
-DCLANG_DEFAULT_UNWINDLIB=libunwind \
-DCLANG_DEFAULT_RTLIB=compiler-rt \
-DCLANG_DEFAULT_LINKER="/llvmtools/bin/ld.lld" \
-DDEFAULT_SYSROOT="/llvmtools" \
-DLLVM_ENABLE_LLD=ON \
-DLLVM_ENABLE_RTTI=ON \
-DLLVM_ENABLE_ZLIB=OFF \
-DBacktrace_INCLUDE_DIR="/llvmtools/include" \
-DBacktrace_LIBRARY="/llvmtools/lib/libexecinfo.so" \
-DCMAKE_CXX_COMPILER_AR="/cgnutools/bin/llvm-ar" \
-DCMAKE_C_COMPILER_AR="/cgnutools/bin/llvm-ar" \
-DCMAKE_CXX_COMPILER_RANLIB="/cgnutools/bin/llvm-ranlib" \
-DCMAKE_C_COMPILER_RANLIB="/cgnutools/bin/llvm-ranlib" \
-DCMAKE_INSTALL_OLDINCLUDEDIR="/llvmtools/include" \
-DCMAKE_LINKER="/cgnutools/bin/ld.lld" \
-DCMAKE_NM="/cgnutools/bin/llvm-nm" \
-DCMAKE_OBJCOPY="/cgnutools/bin/llvm-objcopy" \
-DCMAKE_READELF="/cgnutools/bin/llvm-readelf" \
-DCMAKE_STRIP="/cgnutools/bin/llvm-strip" \
-DICONV_LIBRARY_PATH="/llvmtools/lib/libc.so"
# Build.
time { make -C build; }
# Install, but some binaries are not installed, make sure to install important binaries.
time {
pushd build/ && \
cmake -DCMAKE_INSTALL_PREFIX="/llvmtools" -P cmake_install.cmake && \
cp -v bin/llvm-as /llvmtools/bin/ && \
cp -v bin/llvm-readobj /llvmtools/bin/ && \
ln -sv llvm-readobj /llvmtools/bin/llvm-readelf && \
popd && rm -rf build
}
# Since Binutils won't be used, create a symlink to LLVM tools and set lld as default toolchain linker.
for B in as ar ranlib readelf nm objcopy objdump size strip; do
ln -sv llvm-${B} /llvmtools/bin/${B}
done
ln -sv lld /llvmtools/bin/ld
# Configure Stage-1 Clang to build binaries with "/llvmtools/lib/ld-musl-x86_64.so.1" instead of "/lib/ld-musl-x86_64.so.1".
ln -sv clang-12 /llvmtools/bin/x86_64-pc-linux-musl-clang && \
ln -sv clang-12 /llvmtools/bin/x86_64-pc-linux-musl-clang++ && \
cat > /llvmtools/bin/x86_64-pc-linux-musl.cfg << "EOF"
-Wl,-dynamic-linker /llvmtools/lib/ld-musl-x86_64.so.1
EOF
# Unset exported flags and set the new PATH since "/cgnutools" isn't used anymore.
unset B CFLAGS CXXFLAGS
export PATH="/llvmtools/bin:/llvmtools/usr/bin:/bin:/usr/bin"
# Configure new Stage-1 Clang/LLVM environment.
sed -i "s|PATH=.*|PATH=\"${PATH}\"|" ~/.bashrc
sed -i '/unset CFLAGS CXXFLAGS/d' ~/.bashrc
cat >> ~/.bashrc << "EOF"
# Compiler environment
CC="${TARGET_TRUPLE}-clang"
CXX="${TARGET_TRUPLE}-clang++"
AR="llvm-ar"
AS="llvm-as"
RANLIB="llvm-ranlib"
LD="ld.lld"
STRIP="llvm-strip"
export CC CXX AR AS RANLIB LD STRIP
EOF
source ~/.bashrc
popdI created script like you for patch from Void Linux. #!/usr/bin/env bash
# Stage-1 Clang/LLVM.
pushd "${LLVMSRC}/projects/" && \
for P in \
compiler-rt-aarch64-ucontext.patch \
compiler-rt-sanitizer-ppc64-musl.patch \
compiler-rt-size_t.patch \
compiler-rt-xray-ppc64-musl.patch
do patch -Np1 -i ../../patches/llvm-12/${P}
done; unset P
popd
pushd "${LLVMSRC}/tools/" && \
for P in \
clang-001-fix-unwind-chain-inclusion.patch \
clang-002-add-musl-triples.patch \
clang-003-ppc64-dynamic-linker-path.patch \
clang-004-ppc64-musl-elfv2.patch
do patch -Np1 -i ../../patches/llvm-12/${P}
done; unset P
popd
pushd "${LLVMSRC}/../" && \
for P in \
llvm-001-musl.patch \
llvm-002-musl-ppc64-elfv2.patch \
llvm-003-ppc-secureplt.patch \
llvm-004-override-opt.patch \
llvm-005-ppc-bigpic.patch \
llvm-006-aarch64-mf_exec.patch
do patch -Np1 -i ./patches/llvm-12/${P}
done; unset P
popd
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Also I use the latest |
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Have you already disabled the sanitizers? # Disable sanitizers for musl, fixing "early build failure".
sed -i 's|set(COMPILER_RT_HAS_SANITIZER_COMMON TRUE)|set(COMPILER_RT_HAS_SANITIZER_COMMON FALSE)|' \
projects/compiler-rt/cmake/config-ix.cmake |
I thought I did... I’ll do it again! |
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@owl4ce , what software sorcery is this?? Lol. WOW. I used the cmake command you posted and LLVM built without error!!! |
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I'm going to rebuild llvmtools with purpose removes this line when configuring LLVM. -DLLVM_INSTALL_TOOLCHAIN_ONLY=ON |
No, I believe this does not set the ‘root’ for the llvmtools tools to resolve its libraries and binaries. This is the root that LLVM will install and resolve its libraries and binaries... I have yet to test to confirm. Should be set to
This is set to force the build to use LLVM’s binary tools. This is important as I chose to install |
So, you should remove one of two CMLFS/2-llvmtools/06-clang-llvm Lines 90 to 91 in 52fd160 |
yes, you are right. I did not notice. |
yeah, I need to check that and remove doubles |
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I do appreciate you catching those! |
Yes. I just confirmed: Setting Therefore |
For LLVM 12, I just fine while building. See #12 (comment)
Now moving to chroot steps. I'll report if an issue appeared.
Originally posted by @owl4ce in #14 (comment)
So I switched back to building CMLFS with LLVM12. Still not successful. I accidentally used ninja instead of make:
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