I am developing platform support for an embedded target (Z8 Encore!), and it
mostly works – but I’d like to make it easier to set the compiler and linker
flags, as there’s a ton of them: and they are nothing like GNU flags, so they
only apply when building for that particular target.
Thus a question: is there a preferred way for the user to set platform-specific
flags without having to know them exactly? I’m thinking of having some sort of
platform-agnostic means of selecting compile and link flags, and then
translating those for the platform the target is generated for.
Specifically, I want to avoid having the following in CMakeLists for the
project:
if("${COMPILER_ID}" strequal "ez8cc")
target_compile_options(target1 PRIVATE -const:RAM)
elseif("${COMPILER_ID}" strequal "gcc" and "${CMAKE_SYSTEM_PROCESSOR}" strequal
"somecpu")
target_compile_definitions(target1 PRIVATE ram rom far near) # those shall be
empty
endif()
I’d like to do something like this instead:
set_target_properties(target1 PROPERTIES OPT_CONST RAM OPT_PACK TIGHT …)
Then, a process_target_opts() function called at the end of CMakeLists would
iterate the targets, and for each target call process_${COMPILER_ID}_opts() (if
such function would be present or issue a warning otherwise). That function
then converts the OPT_ options to platform-specific flags, based on cpu and/or
compiler.
Is it something that would be more-or-less idiomatic, or is there another
preferred way of doing it? I really don’t want to list the options manually for
each target/platform combo, as they’d differ quite a bit, and I have lots of
targets (hundreds).
I’d appreciate any hints.
Cheers, Kuba Ober
--
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
