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cmake: fix test HAVE_CXX_LIBATOMICS64_2ARGS in CheckAtomic module

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It's no sense to repeat an already failed check.
Looks like a copy-paste bug as the HAVE_CXX_LIBATOMICS64_2ARGS test
runs again the very same check as the HAVE_LIBATOMIC_2ARGS.

Without this change the check obviously fails:

-- Performing Test HAVE_LIBATOMIC_2ARGS
-- Performing Test HAVE_LIBATOMIC_2ARGS - Failed
-- Performing Test HAVE_CXX_ATOMICS64_WITHOUT_LIB
-- Performing Test HAVE_CXX_ATOMICS64_WITHOUT_LIB - Failed
-- Looking for __atomic_load_8 in atomic
-- Looking for __atomic_load_8 in atomic - not found
-- Performing Test HAVE_CXX_LIBATOMICS64_2ARGS
-- Performing Test HAVE_CXX_LIBATOMICS64_2ARGS - Failed
CMake Error at cmake/CheckAtomic.cmake:146 (message):
  Host compiler appears to require libatomic, but cannot find it.
Call Stack (most recent call first):
  CMakeLists.txt:80 (include)

With this change the test HAVE_CXX_LIBATOMICS64_2ARGS succeeds:

-- Performing Test HAVE_LIBATOMIC_2ARGS
-- Performing Test HAVE_LIBATOMIC_2ARGS - Failed
-- Performing Test HAVE_CXX_ATOMICS64_WITHOUT_LIB
-- Performing Test HAVE_CXX_ATOMICS64_WITHOUT_LIB - Failed
-- Looking for __atomic_load_8 in atomic
-- Looking for __atomic_load_8 in atomic - not found
-- Performing Test HAVE_CXX_LIBATOMICS64_2ARGS
-- Performing Test HAVE_CXX_LIBATOMICS64_2ARGS - Success
-- Performing Test HAVE_CXX_ATOMICS64_WITH_LIB
-- Performing Test HAVE_CXX_ATOMICS64_WITH_LIB - Success
This commit is contained in:
Szabolcs Hubai 2019-11-02 00:39:09 +01:00 • committed by Johannes Pohl
parent 5c4174cfc1
commit e177689426
1 changed files with 1 additions and 1 deletions
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2
cmake/CheckAtomic.cmake
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@ -132,7 +132,7 @@ if(NOT HAVE_CXX_ATOMICS_WITHOUT_LIB)
if( NOT HAVE_CXX_ATOMICS64_WITHOUT_LIB )
check_library_exists(atomic __atomic_load_8 "" HAVE_CXX_LIBATOMICS64)
if( NOT HAVE_CXX_LIBATOMICS64 )
check_working_cxx_atomics_2args(HAVE_CXX_LIBATOMICS64_2ARGS)
check_working_cxx_atomics64_2args(HAVE_CXX_LIBATOMICS64_2ARGS)
endif()
if( HAVE_CXX_LIBATOMICS64 OR HAVE_CXX_LIBATOMICS64_2ARGS )
list(APPEND CMAKE_REQUIRED_LIBRARIES "atomic")