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[CMake] Make simple source used for CMake checks a C file 

The source being compiled is plain C, but using .cc extension forces it
to be compiled as C++ which requires a working C++ compiler including
C++ library which may not be the case when we're building compiler-rt
together with libcxx as part of runtimes build.

Differential Revision: https://reviews.llvm.org/D46152

llvm-svn: 331003
This commit is contained in:
Petr Hosek 2018-04-26 23:35:13 +00:00
parent 2c9cc9c731
commit 887fbc61d4
1 changed files with 1 additions and 1 deletions
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2
compiler-rt/cmake/config-ix.cmake
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@ -125,7 +125,7 @@ set(COMPILER_RT_SUPPORTED_ARCH)
# platform. We use the results of these tests to build only the various target
# runtime libraries supported by our current compilers cross-compiling
# abilities.
set(SIMPLE_SOURCE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/simple.cc)
set(SIMPLE_SOURCE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/simple.c)
file(WRITE ${SIMPLE_SOURCE} "#include <stdlib.h>\n#include <stdio.h>\nint main() { printf(\"hello, world\"); }\n")
# Detect whether the current target platform is 32-bit or 64-bit, and setup