Author: phosek
Date: Wed May 29 22:38:06 2019
New Revision: 362057
URL: http://llvm.org/viewvc/llvm-project?rev=362057&view=rev
Log:
[runtimes] Use -Wunknown-pragmas for the pragma check
This is a follow up to r362055, we need -Wunknown-pragmas otherwise
the check is going to succeed it the pragma isn't supported.
Modified:
libunwind/trunk/cmake/config-ix.cmake
Modified: libunwind/trunk/cmake/config-ix.cmake
URL:
http://llvm.org/viewvc/llvm-project/libunwind/trunk/cmake/config-ix.cmake?rev=362057&r1=362056&r2=362057&view=diff
==============================================================================
--- libunwind/trunk/cmake/config-ix.cmake (original)
+++ libunwind/trunk/cmake/config-ix.cmake Wed May 29 22:38:06 2019
@@ -1,3 +1,4 @@
+include(CMakePushCheckState)
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
include(CheckLibraryExists)
@@ -57,10 +58,13 @@ endif ()
# Check compiler pragmas
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+ cmake_push_check_state()
+ set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror=unknown-pragmas")
check_c_source_compiles("
#pragma comment(lib, \"c\")
int main() { return 0; }
" LIBUNWIND_HAS_COMMENT_LIB_PRAGMA)
+ cmake_pop_check_state()
endif()
# Check compiler flags
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