[CMake] CMake fails to find sys/event.h on FreeBSD 10.2

[Rolf Eike Beer]

Am 16.11.2015 10:47, schrieb Klemen Ferjančič:
> Can you clarify what you meant with this? To add /usr/incude in
> CMAKE_REQUIRED_INCLUDES? Doesn't seem to change anything.
> 
> On 16. 11. 2015 07:35, Rolf Eike Beer wrote:
>> Am Montag, 16. November 2015, 00:34:01 schrieb Klemen Ferjančič:
>>> FreeBSD 10.2-STABLE
>>> CMake 3.3.1
>>> 
>>> Our projects needs kqueue which means that sys/types.h and 
>>> sys/event.h
>>> need to be found. Googling around also revealed that event.h is not 
>>> self
>>> inclusive but depends on type.h. Not sure if that has to do with
>>> anything though.
>>> 
>>> CMakeLists.txt:
>>> check_include_file_cxx(sys/types.h HAVE_SYS_TYPES_H)
>>> if (HAVE_SYS_TYPES_H)
>>> check_include_file_cxx(sys/event.h HAVE_SYS_EVENT_H)
>>> endif()
>> 
>> cmake --help-module CheckIncludeFileCXX
>> 
>> -> CMAKE_REQUIRED_INCLUDES

Sorry, I was indeed confusing modules. Since it's a C header you can 
just use CheckIncludeFiles (not the trailing 's'), which can check 
several headers at once.

Greetings,

Eike