Commit 8348b41308a7126d009bb6e0b33aa5f465e1dc33
2018-10-27T14:58:30
cmake: add various warning flags like autotools has This is mostly to match autotools and reduce amount mixiing declarations and code. Added: - -Wextra (the same as -W), -Wno-unused-parameter -Wstrict-aliasing - -fno-strict-aliasing (gcc 2.9.5+) - -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement (4.0+) - -Waddress -Wno-unused-function -Wnormalized=id -Woverride-init (4.2+) - -Wlogical-op (4.5+) Removed: - -Wformat (include in -Wall) Plus use CMAKE_C_COMPILER_ID over CMAKE_COMPILER_IS_GNUCC, as cmake-variables(7) suggesting, and add common GNUC/CLANG variables. v2: drop checks for flags, since add_compiler_flags() will check if such flags exists anyway (but just to note, gcc ignores non existing warning flags by default).