Le lun. 26 nov. 2018 à 09:36, Ciccio Pasticcio <dodungocorporat...@gmail.com> a écrit :
> Hi all, > > I'm refactoring some libraries cmake files to be compliant to the use of > targets instead of tons of variables. Since these libraries are > cross-compiled I'm facing some problem finding how to properly set some > specific flags like: -march -marm -mfloat-abi etc. For now I set the > CMAKE_CXX_FLAGS: > > set(CMAKE_CXX_FLAGS -march=armv7-a -marm -mthumb-interwork > -mfloat-abi=hard -mfpu=neon -mtune=cortex-a8 -Wno-psabi) > > Is this the only way to do this? > I'm not sure to understand, you can perfectly setup flags on a target specific way using 'target_compile_option' https://cmake.org/cmake/help/latest/command/target_compile_options.html If all your libraries are in a common directory you can use, COMPILE_OPTIONS property on the directory https://cmake.org/cmake/help/latest/prop_tgt/COMPILE_OPTIONS.html#prop_tgt:COMPILE_OPTIONS to avoid repetition for each lib. All that said, if you are cross-compiling those I bet you are using a toolchain file ( https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html#cross-compiling ) so if those "target-specific" compile options are global to your target then you may set https://cmake.org/cmake/help/latest/variable/CMAKE_LANG_FLAGS.html#variable:CMAKE_%3CLANG%3E_FLAGS in the toolchain. -- Eric
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