zephyr

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Author	SHA1	Message	Date
Torsten Rasmussen	917d5021d7	cmake: CMake compile features support Fixes: #36558 #32577 This commit introduces CMAKE_C_COMPILE_FEATURES and CMAKE_CXX_COMPILE_FEATURES. This allows users to use the `target_compile_features()` in their own code. In Zephyr, the CMAKE_C/CXX_COMPILE_FEATURES are defined based on the compiler and the Kconfig / CSTD setting. Doing so ensures that a user compiling Zephyr with c99 and specifies `target_compile_features(<target> ... c_std_11)` will get an error. And similar if building Zephyr with C++ support and c++11, but testing for `target_compile_features(<target> ... cxx_std_17)`. For example in the C++ case, the user must ensure that Zephyr is compiled with C++17, that is: CPLUSPLUS=y and STD_CPP17=y, in which case the CMAKE_CXX_COMPILE_FEATURES will contain support for C++17 and thus the `target_compile_features(<target> ... cxx_std_17)` will succeed. Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>	4 years ago

Author

SHA1

Message

Date

Torsten Rasmussen

917d5021d7

cmake: CMake compile features support

Fixes: #36558 #32577

This commit introduces CMAKE_C_COMPILE_FEATURES and
CMAKE_CXX_COMPILE_FEATURES.

This allows users to use the `target_compile_features()` in their own
code.

In Zephyr, the CMAKE_C/CXX_COMPILE_FEATURES are defined based on the
compiler and the Kconfig / CSTD setting.
Doing so ensures that a user compiling Zephyr with c99 and specifies
`target_compile_features(<target> ... c_std_11)` will get an error.
And similar if building Zephyr with C++ support and c++11, but testing
for `target_compile_features(<target> ... cxx_std_17)`.

For example in the C++ case, the user must ensure that Zephyr is
compiled with C++17, that is: CPLUSPLUS=y and STD_CPP17=y, in which case
the CMAKE_CXX_COMPILE_FEATURES will contain support for C++17 and thus
the `target_compile_features(<target> ... cxx_std_17)` will succeed.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>

4 years ago

1 Commits (main)