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| author | John Szakmeister <john@szakmeister.net> | 2014-11-21 03:42:59 -0500 |
|---|---|---|
| committer | John Szakmeister <john@szakmeister.net> | 2014-11-25 20:18:51 -0500 |
| commit | 7b6f705e5f6663c1dc1f8c77583cd3c311e9a7f8 (patch) | |
| tree | 94ddfd1b0fc0c38b0cc069408bcb20ac6d7e140c | |
| parent | 68fcd8b696dae33897303c9f8265629a31afbf17 (diff) | |
| download | rneovim-7b6f705e5f6663c1dc1f8c77583cd3c311e9a7f8.tar.gz rneovim-7b6f705e5f6663c1dc1f8c77583cd3c311e9a7f8.tar.bz2 rneovim-7b6f705e5f6663c1dc1f8c77583cd3c311e9a7f8.zip | |
build: probe the compiler to see if we need to turn down _FORTIFY_SOURCE
Some builds don't use Release (such as Gentoo, though it can be told
to). So let's go a bit further and probe the compiler to see if we need
to turn down the _FORTIFY_SOURCE level.
| -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") |