diff options
| -rw-r--r-- | CMakeLists.txt | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index d92ac6e392..4ff0bb6f2f 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -191,6 +191,19 @@ add_definitions( # Counterhack to work around some cache magic in CHECK_C_SOURCE_COMPILES include(CheckCCompilerFlag) + +if(NOT DISABLE_WERROR AND NOT ENABLE_EXTRA_GCC_CHECKS) + check_c_compiler_flag(-Werror=unknown-warning-option WERR_UNKNOWN) + check_c_compiler_flag(-Werror WERROR) +else() + unset(WERR_UNKNOWN) + unset(WERROR) +endif() +# string of additional compile command line flags for check_c_compiler_flag +if(WERR_UNKNOWN) + set(CMAKE_REQUIRED_FLAGS -Werror=unknown-warning-option ) +endif() + set(C 0) # Sigh: Have to use THIS_FLAG instead of ${F} for some reason foreach(THIS_FLAG ${WIRESHARK_C_FLAGS}) @@ -225,12 +238,6 @@ else() # TODO add alternate compiler flags for hiding symbols " All shared library symbols will be exported.") endif() -if(NOT DISABLE_WERROR AND NOT ENABLE_EXTRA_GCC_CHECKS) - check_c_compiler_flag(-Werror WERROR) -else() - unset(WERROR) -endif() - if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER MATCHES ".*clang" OR CMAKE_CXX_COMPILER MATCHES ".*clang") set (C_UNUSED "__attribute__((unused))" ) |