[PATCH] D47865: [CMake] Filter out -z, defs when building custom libc++

[Matt Morehouse via Phabricator via llvm-commits]

morehouse added a comment.

In https://reviews.llvm.org/D47865#1129155, @morehouse wrote:

> https://reviews.llvm.org/rCRT334458 should fix the build bot.


Partially fixes.  We still get:

  Performing C++ SOURCE FILE Test LIBCXX_SUPPORTS_STD_EQ_CXX11_FLAG failed with the following output:
  Change Dir: /b/sanitizer-x86_64-linux/build/compiler_rt_build/lib/fuzzer/libcxx_fuzzer_x86_64-bins/CMakeFiles/CMakeTmp
  Run Build Command:"/usr/bin/make" "cmTC_08c90/fast"
  make[3]: Entering directory '/b/sanitizer-x86_64-linux/build/compiler_rt_build/lib/fuzzer/libcxx_fuzzer_x86_64-bins/CMakeFiles/CMakeTmp'
  /usr/bin/make -f CMakeFiles/cmTC_08c90.dir/build.make CMakeFiles/cmTC_08c90.dir/build
  make[4]: Entering directory '/b/sanitizer-x86_64-linux/build/compiler_rt_build/lib/fuzzer/libcxx_fuzzer_x86_64-bins/CMakeFiles/CMakeTmp'
  Building CXX object CMakeFiles/cmTC_08c90.dir/src.cxx.o
  /b/sanitizer-x86_64-linux/build/llvm_build64/bin/clang++     -Wall -Werror -std=c++11 -Wno-unused-parameter -m64 -D_LIBCPP_ABI_VERSION=Fuzzer -D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS=1 -fvisibility=hidden -DLIBCXX_SUPPORTS_STD_EQ_CXX11_FLAG  -nodefaultlibs   -std=c++11 -o CMakeFiles/cmTC_08c90.dir/src.cxx.o -c /b/sanitizer-x8
  6_64-linux/build/compiler_rt_build/lib/fuzzer/libcxx_fuzzer_x86_64-bins/CMakeFiles/CMakeTmp/src.cxx
  Linking CXX executable cmTC_08c90
  /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_08c90.dir/link.txt --verbose=1
  /b/sanitizer-x86_64-linux/build/llvm_build64/bin/clang++    -Wall -Werror -std=c++11 -Wno-unused-parameter -m64 -D_LIBCPP_ABI_VERSION=Fuzzer -D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS=1 -fvisibility=hidden -DLIBCXX_SUPPORTS_STD_EQ_CXX11_FLAG  -nodefaultlibs    CMakeFiles/cmTC_08c90.dir/src.cxx.o  -o cmTC_08c90 -lgcc_s 
  /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../x86_64-linux-gnu/crt1.o:function _start: **error: undefined reference to '__libc_csu_fini**'
  /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../x86_64-linux-gnu/crt1.o:function _start: error: undefined reference to '__libc_csu_init'
  /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../x86_64-linux-gnu/crt1.o:function _start: error: undefined reference to '__libc_start_main'
  clang-7: error: linker command failed with exit code 1 (use -v to see invocation)


Repository:
  rL LLVM

https://reviews.llvm.org/D47865