It should be a CMake list, which is delineated by semicolons. add_compile_options($<$<COMPILE_LANGUAGE:C>-Wall;-Wextra>)
I am writing this from a phone so untested, but that has worked for me in the past. -Stephen On Sat, Jun 2, 2018, 3:47 PM Neil Carlson <neil.n.carl...@gmail.com> wrote: > I'm attempting to use a generator expression to conditionally add compile > options. No problem if it is a single option, but I can't figure out how to > manage multiple options (in a single command). > > For example, this works: > add_compile_options($<$<COMPILE_LANGUAGE:C>-Wall>) > > As does this: > add_compile_options(-Wall -Wextra) > > But not this: > add_compile_options($<$<COMPILE_LANGUAGE:C>-Wall -Wextra>) > > Nor this: > add_compile_options($<$<COMPILE_LANGUAGE:C>"-Wall -Wextra">) > > Or any other variation I could think of. Either the space breaks the > generator expression, or I get a quoted version of the options that the > compiler sees as a single "option" it doesn't understand. > > Is there some way of doing this? > > PS: I'm trying to avoid using CMAKE_C_FLAGS. My understanding is that > variable is meant for the end user's use. Am I mistaken about that? > > -- > > Powered by www.kitware.com > > Please keep messages on-topic and check the CMake FAQ at: > http://www.cmake.org/Wiki/CMake_FAQ > > Kitware offers various services to support the CMake community. For more > information on each offering, please visit: > > CMake Support: http://cmake.org/cmake/help/support.html > CMake Consulting: http://cmake.org/cmake/help/consulting.html > CMake Training Courses: http://cmake.org/cmake/help/training.html > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Follow this link to subscribe/unsubscribe: > https://cmake.org/mailman/listinfo/cmake >
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