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Add -latomic when required

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Some platforms ship with atomic builtins packaged in their own library
which needs to be linked in order to make use of them.

This patch, based on
https://github.com/WebPlatformForEmbedded/meta-wpe/issues/210 adds a
configure-time check to verify if the library is needed and adds it when
necessary.
This commit is contained in:
Michał Janiszewski 2019-07-12 22:16:42 +02:00
parent 65961de041
commit 460e28bff1
1 changed files with 13 additions and 0 deletions
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13
CMakeLists.txt
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@ -139,6 +139,19 @@ target_link_libraries(${PROJECT_NAME}
PRIVATE ${ZLIB_LIBRARIES} PRIVATE ${ZLIB_LIBRARIES}
) )
# Check if libatomic is needed in order to use std::atomic, and add
# it to the list of JavaScriptCore libraries.
file(WRITE ${CMAKE_BINARY_DIR}/test_atomic.cpp
"#include <atomic>\n"
"int main() { std::atomic<int64_t> i(0); i++; return 0; }\n")
try_compile(ATOMIC_BUILD_SUCCEEDED ${CMAKE_BINARY_DIR} ${CMAKE_BINARY_DIR}/test_atomic.cpp)
if (NOT ATOMIC_BUILD_SUCCEEDED)
target_link_libraries(${PROJECT_NAME}
PRIVATE -latomic
)
endif ()
file(REMOVE ${CMAKE_BINARY_DIR}/test_atomic.cpp)
if(LINK_LIBCRYPTO EQUAL 1) if(LINK_LIBCRYPTO EQUAL 1)
target_link_libraries(${PROJECT_NAME} target_link_libraries(${PROJECT_NAME}
PRIVATE ${Libcrypto_LIBRARIES} PRIVATE ${Libcrypto_LIBRARIES}