[CMake] Check symbol in header files with dependencies

[Rolf Eike Beer]

Am Donnerstag, 5. Februar 2015, 21:12:36 schrieb Alexander Koeppe:
> Hi Cmake user list,
> 
> I have a problem that I need to check the presence of a certain symbol
> in a header file using CHECK_SYMBOL_EXISTS which has several dependencies.
> 
> The check fails because the header file also contains data types that
> require an additional header file to be included by the test program. It
> looks like CHECK_SYMBOL_EXISTS is not capable doing that.

set(CMAKE_REQUIRED_INCLUDES some_header.h other/header.h)
check_symbol_exists(...)

Eike
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