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[runtimes] Use -Wunknown-pragmas for the pragma check

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This is a follow up to r362055, we need -Wunknown-pragmas otherwise
the check is going to succeed it the pragma isn't supported.

llvm-svn: 362057
This commit is contained in:
Petr Hosek 2019-05-30 05:38:06 +00:00
parent e4cfa89915
commit f1ddf431b5
3 changed files with 12 additions and 0 deletions
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4
libcxx/cmake/config-ix.cmake
View file

@ -1,3 +1,4 @@
include(CMakePushCheckState)
include(CheckLibraryExists)
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
@ -62,10 +63,13 @@ 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; }
" LIBCXX_HAS_COMMENT_LIB_PRAGMA)
cmake_pop_check_state()
endif()
if(NOT WIN32 OR MINGW)

4
libcxxabi/cmake/config-ix.cmake
View file

@ -1,3 +1,4 @@
include(CMakePushCheckState)
include(CheckLibraryExists)
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
@ -51,10 +52,13 @@ 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; }
" LIBCXXABI_HAS_COMMENT_LIB_PRAGMA)
cmake_pop_check_state()
endif()
# Check compiler flags

4
libunwind/cmake/config-ix.cmake
View file

@ -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