[CMake] Changing definitions at compile time

[Kfir Lavi]

Hi,
I need to compile the code twice. Once with -DA and once with -DB
My code look like this:
add_definitions(-DA)
add_library(${mylib_A} SHARED ${myfiles})
remove_definitions(-DA)

add_definitions(-DB)
add_library(${lib_B} SHARED ${myfiles})
remove_definitions(-DB)

What cmake does is to define A and then remove it, so in compile time, there

is now definition of A or B.

How do I tell cmake that the remove needs to  be in compile time?

Regards,
Kfir
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