On Saturday, 18. August 2012, 00:16:41, Edgar wrote:
> I have these problems -
> 1) Cmake cannot find ZLIB
> 2) Cmake cannot find LIBPNG
> There are some .cmake files named FindALLEGRO, and FindFREETYPE, and
> those work properly. Do I need to create similar cmake files for zlib
> and libpng?
Those two are standard cmake modules[1][2]. You only have to point them to the
location of your zlib/libpng installation. You can help cmake by setting the
environment variable CMAKE_PREFIX_PATH to a colon-separated list of paths
(e.g. /myopt:/usr/local).
In your case it might even suffice to set the cmake variable ZLIB_ROOT (libpng
depends on zlib and therefore FindPNG.cmake will bail out if zlib is not
found).
> 3) There are undefined reference errors during the linking process for
> the OpenLayer demos, and I don't know how to properly link the necessary
> libraries using cmake.
You should read up on target_link_libraries [3] for that. Normally the usage
pattern is something like the following:
FIND_PACKAGE(FOO REQUIRED)
TARGET_LINK_LIBRARIES(someTarget ${FOO_LIBRARIES})
Cheers,
Johannes
[1] http://www.cmake.org/cmake/help/v2.8.9/cmake.html#module:FindZLIB
[2] http://www.cmake.org/cmake/help/v2.8.9/cmake.html#module:FindPNG
[3]
http://www.cmake.org/cmake/help/v2.8.9/cmake.html#command:target_link_libraries
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