diff options
| -rw-r--r-- | CMakeLists.txt | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 0241b0502c..d2b5217658 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -73,8 +73,19 @@ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wconversion") # gcc 4.0 and better turn on _FORTIFY_SOURCE=2 automatically. This currently # does not work with Neovim due to some uses of dynamically-sized structures. # See https://github.com/neovim/neovim/issues/223 for details. -if(CMAKE_COMPILER_IS_GNUCC AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS "4" - AND CMAKE_BUILD_TYPE MATCHES "^Rel") +include(CheckCSourceCompiles) +check_c_source_compiles(" +#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 1 +#error \"_FORTIFY_SOURCE > 1\" +#endif +int +main(void) +{ + return 0; +} +" _FORTIFY_SOURCE_ACCEPTABLE) + +if(NOT _FORTIFY_SOURCE_ACCEPTABLE) # -U in add_definitions doesn't end up in the correct spot, so we add it to # the flags variable instead. set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1") |