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Link with libatomic to enable C11 atomics support

Browse source 
Some architectures (mips) require libatomic to support proper
atomic operations. Check first if support is available without
linking, otherwise use the library.

Contributors:
James Cowgill <jcowgill@debian.org>
Jessica Clarke <jrtc27@debian.org>
Vicențiu Ciorbaru <vicentiu@mariadb.org>
This commit is contained in:
Vicențiu Ciorbaru 2021-10-15 16:51:05 +03:00
parent 39f6315612
commit f502ccbcb5
3 changed files with 23 additions and 2 deletions
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20
configure.cmake
View file

@ -895,7 +895,25 @@ int main()
long long int *ptr= &var;
return (int)__atomic_load_n(ptr, __ATOMIC_SEQ_CST);
}"
HAVE_GCC_C11_ATOMICS)
HAVE_GCC_C11_ATOMICS_WITHOUT_LIBATOMIC)
IF (HAVE_GCC_C11_ATOMICS_WITHOUT_LIBATOMIC)
SET(HAVE_GCC_C11_ATOMICS True)
ELSE()
SET(OLD_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
LIST(APPEND CMAKE_REQUIRED_LIBRARIES "atomic")
CHECK_CXX_SOURCE_COMPILES("
int main()
{
long long int var= 1;
long long int *ptr= &var;
return (int)__atomic_load_n(ptr, __ATOMIC_SEQ_CST);
}"
HAVE_GCC_C11_ATOMICS_WITH_LIBATOMIC)
IF(HAVE_GCC_C11_ATOMICS_WITH_LIBATOMIC)
SET(HAVE_GCC_C11_ATOMICS True)
ENDIF()
SET(CMAKE_REQUIRED_LIBRARIES ${OLD_CMAKE_REQUIRED_LIBRARIES})
ENDIF()
IF(WITH_VALGRIND)
SET(HAVE_valgrind 1)

4
mysys/CMakeLists.txt
View file

@ -78,6 +78,10 @@ TARGET_LINK_LIBRARIES(mysys dbug strings ${ZLIB_LIBRARY}
${LIBNSL} ${LIBM} ${LIBRT} ${CMAKE_DL_LIBS} ${LIBSOCKET} ${LIBEXECINFO} ${CRC32_LIBRARY})
DTRACE_INSTRUMENT(mysys)
IF (HAVE_GCC_C11_ATOMICS_WITH_LIBATOMIC)
TARGET_LINK_LIBRARIES(mysys atomic)
ENDIF()
IF(HAVE_BFD_H)
TARGET_LINK_LIBRARIES(mysys bfd)
ENDIF(HAVE_BFD_H)

1
sql/CMakeLists.txt
View file

@ -307,7 +307,6 @@ IF(WITH_MYSQLD_LDFLAGS)
"${MYSQLD_LINK_FLAGS} ${WITH_MYSQLD_LDFLAGS}")
ENDIF()
FIND_PACKAGE(BISON 2.0)