Hi all,
I need to implement a code export function, that will only export code used
in a specific project configuration.
For this purpose I want to use unifdef (http://dotat.at/prog/unifdef/),
which is capable of removing unused #ifdef blocks.
The project uses static libraries like in following example:
add_library(
foo STATIC
foo.c
)
add_library(
bar STATIC
bar.c
)
target_compile_definitions(bar INTERFACE HAVE_BAR)
target_link_libraries(foo LINK_PUBLIC bar)
Now foo.c will be compiled with -DHAVE_BAR at build time.
To create a custom target using unifdef i need this information at cmake
configure time. I expected to find this in the property COMPILE_DEFINITIONS
of either the source file foo.c or target foo, but both are empty.
Does anyone know, how to get a list of definitions (that will be used at
build time) for targets or files?
Regards,
Robert Schwarzelt
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