[PATCH] D45638: [Fuzzer] Avoid C++ compiler checks for fuzzer C++ library

[Petr Hosek via Phabricator via llvm-commits]

phosek created this revision.
phosek added reviewers: vitalybuka, morehouse.
Herald added subscribers: Sanitizers, llvm-commits, mgorny.

When bulding libFuzzer as part of the toolchain, C++ library may not
have been fully built yet so the C++ compiler checks will fail, but we
don't care since we don't need C++ library anyway as we're building
our own.


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D45638

Files:
  compiler-rt/lib/fuzzer/CMakeLists.txt


Index: compiler-rt/lib/fuzzer/CMakeLists.txt
===================================================================
--- compiler-rt/lib/fuzzer/CMakeLists.txt
+++ compiler-rt/lib/fuzzer/CMakeLists.txt
@@ -103,7 +103,8 @@
              -D_LIBCPP_ABI_VERSION=Fuzzer
              -D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS=1
              -fvisibility=hidden
-      CMAKE_ARGS -DLIBCXX_ENABLE_EXCEPTIONS=OFF
+      CMAKE_ARGS -DCMAKE_CXX_COMPILER_WORKS=ON
+                 -DLIBCXX_ENABLE_EXCEPTIONS=OFF
                  -DLIBCXX_CXX_ABI=none)
     target_compile_options(RTfuzzer.${arch} PRIVATE -isystem ${LIBCXX_${arch}_PREFIX}/include/c++/v1)
     add_dependencies(RTfuzzer.${arch} libcxx_fuzzer_${arch}-build)


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