The zm-dependency-interface target sets compiler flags in a way suitable for external dependencies.
This means mainly to disable compile warnings since they concern upstream and not us.
-Wno-cast-function-type:
Signal handler code relies on this.
-Wno-type-limits:
Some of the color space conversion code in zm_image throws this warning. To not break anything let's ignore this warning for the time being.
Note that clang enables -Woverloaded-virtual with -Wextra. To not flood the GCC build log with warnings let's not enable this at the moment.
This will be done in a second step, when the currently throwing code will be cleaned up.
zm-compile-option-interface:
Use to set various compiler/linker flags
zm-feature-interface:
Use to set required compiler features.
See https://cmake.org/cmake/help/latest/prop_gbl/CMAKE_CXX_KNOWN_FEATURES.html
zm-warning-interface:
Use to set compiler warning flags. If need be a zm-no-warning-interface can be added which suppresses all warning for targets linked against it. Useful for in-tree dependencies from which we don't want compiler warnings.
zm-core-interface:
That's the interface one should normally link against to get all the options.
Peter Keresztes Schmidt
Isaac Connor
Andrew Bauer
hax0kartik
Andrew Bauer
Isaac Connor
Isaac Connor
Andrew Bauer
Kfir Itzhak