[CMake] FIND_PACKAGE(SWIG) in cmake 1.8

[Brad King]

James Bigler wrote:
> I know this works in 2.0, but I need to know how I can fix the following 
> code to work in 1.8 without breaking:
> 
> FIND_PACKAGE(SWIG)
> IF (SWIG_FOUND)
>   SET(MAIN_SUBDIRS ${MAIN_SUBDIRS} SwigInterface)
> ENDIF (SWIG_FOUND)
> 
> I get errors from withing ccmake when swig isn't found saying this:
> 
>  CMake Error: SWIG_DIR is not set.  It must be set to the directory
>  containing SWIGConfig.cmake so in order to use SWIG.
> 
> Is this a feature that is only found in 2.0?

SWIG support was not added until CMake 2.0.

-Brad