diff options
Diffstat (limited to 'llvm/cmake')
| -rw-r--r-- | llvm/cmake/modules/HandleLLVMOptions.cmake | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/llvm/cmake/modules/HandleLLVMOptions.cmake b/llvm/cmake/modules/HandleLLVMOptions.cmake index b1174f94ea4..9408eb94af2 100644 --- a/llvm/cmake/modules/HandleLLVMOptions.cmake +++ b/llvm/cmake/modules/HandleLLVMOptions.cmake @@ -135,6 +135,28 @@ if(APPLE) set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-flat_namespace -Wl,-undefined -Wl,suppress") endif() +if(${CMAKE_SYSTEM_NAME} MATCHES "Linux") + # RHEL7 has ar and ranlib being non-deterministic by default. The D flag forces determinism, + # however only GNU version of ar and ranlib (2.27) have this option. + # RHEL DTS7 is also affected by this, which uses GNU binutils 2.28 + execute_process(COMMAND ${CMAKE_AR} rD t.a + WORKING_DIRECTORY ${CMAKE_BINARY_DIR} RESULT_VARIABLE AR_RESULT OUTPUT_VARIABLE RANLIB_OUTPUT) + if(${AR_RESULT} EQUAL 0) + execute_process(COMMAND ${CMAKE_RANLIB} -D t.a + WORKING_DIRECTORY ${CMAKE_BINARY_DIR} RESULT_VARIABLE RANLIB_RESULT OUTPUT_VARIABLE RANLIB_OUTPUT) + if(${RANLIB_RESULT} EQUAL 0) + set(CMAKE_C_ARCHIVE_CREATE "<CMAKE_AR> Dqc <TARGET> <LINK_FLAGS> <OBJECTS>") + set(CMAKE_C_ARCHIVE_APPEND "<CMAKE_AR> Dq <TARGET> <LINK_FLAGS> <OBJECTS>") + set(CMAKE_C_ARCHIVE_FINISH "<CMAKE_RANLIB> -D <TARGET>") + + set(CMAKE_CXX_ARCHIVE_CREATE "<CMAKE_AR> Dqc <TARGET> <LINK_FLAGS> <OBJECTS>") + set(CMAKE_CXX_ARCHIVE_APPEND "<CMAKE_AR> Dq <TARGET> <LINK_FLAGS> <OBJECTS>") + set(CMAKE_CXX_ARCHIVE_FINISH "<CMAKE_RANLIB> -D <TARGET>") + endif() + file(REMOVE ${CMAKE_BINARY_DIR}/t.a) + endif() +endif() + if(${CMAKE_SYSTEM_NAME} MATCHES "AIX") if(NOT LLVM_BUILD_32_BITS) if (CMAKE_CXX_COMPILER_ID MATCHES "XL") |
