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| -rw-r--r-- | CMakeLists.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 0409c8292e..c6ed0f0cdf 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -254,6 +254,10 @@ if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_SYSTEM_NAME STREQUAL "Linux") set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--no-undefined") set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--no-undefined") set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--no-undefined") + + # For O_CLOEXEC, O_DIRECTORY, and O_NOFOLLOW flags on older systems + # (pre POSIX.1-2008: glibc 2.11 and earlier). #4042 + add_definitions(-D_GNU_SOURCE) endif() if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_SYSTEM_NAME STREQUAL "SunOS") |