[CMake] FIND_LIBRARY debug/release

[Brad King]

Jacob Foshee wrote:
> I am working on updating the FindDCMTK.cmake module.
> It includes a lot of commands like the following:
> FIND_LIBRARY( DCMTK_dcmimgle_LIBRARY dcmimgle
>  ${DCMTK_DIR}/dcmimgle/libsrc
>  ${DCMTK_DIR}/dcmimgle/libsrc/Release
>  ${DCMTK_DIR}/dcmimgle/libsrc/Debug
> )
> 
> Shouldn't FIND_LIBRARY look in the "release" and "debug" subfolders by
> default?  It does not seem to.

No, because at CMake time the build configuration to be used may not be
known so it cannot know in which to look.  You should do something like
this:

FIND_LIBRARY(DCMTK_dcmimgle_LIBRARY_RELEASE
  NAMES dcmimgle
  PATHS ${DCMTK_DIR}/dcmimgle/libsrc/Release
        ${DCMTK_DIR}/dcmimgle/libsrc
  )

FIND_LIBRARY(DCMTK_dcmimgle_LIBRARY_DEBUG
  NAMES dcmimgle # Change name here if debug lib has different name.
  PATHS ${DCMTK_DIR}/dcmimgle/libsrc/Debug
        ${DCMTK_DIR}/dcmimgle/libsrc
  )

SET(DCMTK_dcmimgle_LIBRARY
  debug ${DCMTK_dcmimgle_LIBRARY_DEBUG}
  optimized ${DCMTK_dcmimgle_LIBRARY_RELEASE}
  )

See FindQt4.cmake for code that does something similar already.

-Brad