search for: dlibcxxabi_use_llvm_unwind

Folks, I'm trying to set up a libc++ buildbot on ARM and I found an inconsistency which I'm not sure how to fix. I got a build error like this: libc++abi.so: undefined reference to `_Unwind_GetGR' Since I expected that the symbol would be provided by that library, I searched the CMake on libc++abi and found this: option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM

You also need -DLIBUNWIND_USE_COMPILER_RT=ON -DLIBCXXABI_USE_LLVM_UNWINDER=ON. This is because you set -DLIBCXXABI_USE_COMPILER_RT=ON so libc++abi.so is no longer being linked agains libgcc_s.so which is where the unwinder otherwise comes from. On Sun, May 6, 2018 at 4:05 AM via llvm-dev <llvm-dev at lists.llvm.org> wrote: > I try to compile LLVM, clang, lld...

I try to compile LLVM, clang, lld and libcxx together in one source directory following the instructions on the website. I'm running Arch Linux and already have LLVM, clang, lld and libcxx installed (prebuilt against libstdc++). Now I want a "pure" llvm toolchain. The following options were used: -DBOOTSTRAP_LLVM_ENABLE_LLD -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++

...unwinder." > OFF) > > ... > > if (LIBCXXABI_USE_LLVM_UNWINDER) > > add_subdirectory(src/Unwind) > > endif() > > > > But on the Libc++AndAbiBuilder, there's no way to set the CMake > > argument (or is there?): > I *think* you can add "-DLIBCXXABI_USE_LLVM_UNWINDER" to the env argument > and > get what you want, but Dan will have to correct me on that... > > > > def getLibcxxAndAbiBuilder(f=None, env={}, additional_features=set()): > > > > "additional_features" seem to imply only lit test args, not anything >...

...I_INCLUDE_DIR=$(pkg-config --variable=includedir libffi) \     -DFFI_LIBRARY_DIR:PATH="$(pkg-config --variable=libdir libffi)" \     -DLLVM_BINUTILS_INCDIR=/usr/include \     -DLLVM_LIBDIR_SUFFIX=64 \     -DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=ON \     -DLIBUNWIND_ENABLE_SHARED=ON \     -DLIBCXXABI_USE_LLVM_UNWINDER=ON \     -DLLDB_TEST_C_COMPILER=clang \     -DLLDB_TEST_CXX_COMPILER=clang++ \     -DLLVM_DEFAULT_TARGET_TRIPLE="x86_64-redhat-linux" \     -DCLANG_VENDOR="LLVM China" 4. $ clang -v LLVM China clang version 8.0.0 (git at github.com:llvm-mirror/clang.git 81ef98628ebf5186d...

...i) \ >> -DFFI_LIBRARY_DIR:PATH="$(pkg-config --variable=libdir libffi)" \ >> -DLLVM_BINUTILS_INCDIR=/usr/include \ >> -DLLVM_LIBDIR_SUFFIX=64 \ >> -DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=ON \ >> -DLIBUNWIND_ENABLE_SHARED=ON \ >> -DLIBCXXABI_USE_LLVM_UNWINDER=ON \ >> -DLLDB_TEST_C_COMPILER=clang \ >> -DLLDB_TEST_CXX_COMPILER=clang++ \ >> -DLLVM_DEFAULT_TARGET_TRIPLE="x86_64-redhat-linux" \ >> -DCLANG_VENDOR="LLVM China" >> >> 4. $ clang -v >> LLVM China clang version 8.0...

...H="$(pkg-config --variable=libdir libffi)" \ >>>> -DLLVM_BINUTILS_INCDIR=/usr/include \ >>>> -DLLVM_LIBDIR_SUFFIX=64 \ >>>> -DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=ON \ >>>> -DLIBUNWIND_ENABLE_SHARED=ON \ >>>> -DLIBCXXABI_USE_LLVM_UNWINDER=ON \ >>>> -DLLDB_TEST_C_COMPILER=clang \ >>>> -DLLDB_TEST_CXX_COMPILER=clang++ \ >>>> -DLLVM_DEFAULT_TARGET_TRIPLE="x86_64-redhat-linux" \ >>>> -DCLANG_VENDOR="LLVM China" >>>> >>>> 4....

...rmv7a-plex-linux-gnueabihf-g++ CFLAGS=-fPIC -DPIC -mfloat-abi=hard -march=armv7-a -Os -mfpu=vfpv3-d16 --sysroot=<path> CXXFLAGS=-fPIC -DPIC -mfloat-abi=hard -march=armv7-a -Os -mfpu=vfpv3-d16 --sysroot=<path> LDFLAGS=-static-libgcc --sysroot=<path> then run cmake: cmake -GNinja -DLIBCXXABI_USE_LLVM_UNWINDER=ON DLLVM_TARGET_ARCH=ARM -DLLVM_DEFAULT_TARGET_TRIPLE=arm-linux-gnueabihf -DLLVM_TARGETS_TO_BUILD=ARM -DCMAKE_CROSSCOMPILING=True .. This errors out as shown below. It's like it's missing some definitions of different math functions that I can't seem to be able to see anywhere else....

...CFLAGS=-fPIC -DPIC -mfloat-abi=hard -march=armv7-a -Os -mfpu=vfpv3-d16 --sysroot=<path> > CXXFLAGS=-fPIC -DPIC -mfloat-abi=hard -march=armv7-a -Os -mfpu=vfpv3-d16 --sysroot=<path> > LDFLAGS=-static-libgcc --sysroot=<path> > > then run cmake: > > cmake -GNinja -DLIBCXXABI_USE_LLVM_UNWINDER=ON DLLVM_TARGET_ARCH=ARM -DLLVM_DEFAULT_TARGET_TRIPLE=arm-linux-gnueabihf -DLLVM_TARGETS_TO_BUILD=ARM -DCMAKE_CROSSCOMPILING=True .. > > This errors out as shown below. It's like it's missing some definitions of different math functions that I can't seem to be able to see anywh...

...march=armv7-a -Os -mfpu=vfpv3-d16 > --sysroot=<path> > > CXXFLAGS=-fPIC -DPIC -mfloat-abi=hard -march=armv7-a -Os -mfpu=vfpv3-d16 > --sysroot=<path> > > LDFLAGS=-static-libgcc --sysroot=<path> > > > > then run cmake: > > > > cmake -GNinja -DLIBCXXABI_USE_LLVM_UNWINDER=ON DLLVM_TARGET_ARCH=ARM > -DLLVM_DEFAULT_TARGET_TRIPLE=arm-linux-gnueabihf > -DLLVM_TARGETS_TO_BUILD=ARM -DCMAKE_CROSSCOMPILING=True .. > > > > This errors out as shown below. It's like it's missing some definitions > of different math functions that I can't seem...

...rmv7a-plex-linux-gnueabihf-g++ CFLAGS=-fPIC -DPIC -mfloat-abi=hard -march=armv7-a -Os -mfpu=vfpv3-d16 --sysroot=<path> CXXFLAGS=-fPIC -DPIC -mfloat-abi=hard -march=armv7-a -Os -mfpu=vfpv3-d16 --sysroot=<path> LDFLAGS=-static-libgcc --sysroot=<path> then run cmake: cmake -GNinja -DLIBCXXABI_USE_LLVM_UNWINDER=ON DLLVM_TARGET_ARCH=ARM -DLLVM_DEFAULT_TARGET_TRIPLE=arm-linux-gnueabihf -DLLVM_TARGETS_TO_BUILD=ARM -DCMAKE_CROSSCOMPILING=True .. This errors out as shown below. It's like it's missing some definitions of different math functions that I can't seem to be able to see anywhere else....

..._ENABLE_FFI=ON \ -DCMAKE_BUILD_TYPE=Release \ -DLLVM_ENABLE_RTTI=ON \ -DLLVM_TARGETS_TO_BUILD="host" \ -DBUILD_SHARED_LIBS=ON \ -DLLVM_ENABLE_PROJECTS="clang;libcxx;libcxxabi;compiler-rt;lld;libunwind" \ -DLIBCXX_CXX_ABI=libcxxabi \ -DLIBCXX_USE_COMPILER_RT=On \ -DLIBCXXABI_USE_LLVM_UNWINDER=On \ -DLIBCXXABI_USE_COMPILER_RT=On \ -DLIBCXX_HAS_GCC_S_LIB=Off \ -DLIBUNWIND_USE_COMPILER_RT=On \ -DCLANG_DEFAULT_CXX_STDLIB=libc++ \ -DCLANG_DEFAULT_RTLIB=compiler-rt \ -DCLANG_DEFAULT_LINKER=lld \ ../llvm-project/llvm # configure3.txt === snap === I'm getting this error: ==...

Hi folks! I'm trying to get rid of any dependency on libgcc*, but without success so far. The following commands were executed on a freshliy installed and updated Ubuntu 16.04 LTS: === snip === sudo apt-get install build-essential libffi-dev cmake # see aptget.txt for packages installed sudo mv /usr/local /usr/local.orig git clone https://github.com/llvm/llvm-project.git cd llvm-project; git