QGIS/cmake/FindProj.cmake

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CMake
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# CMake module to search for Proj library
#
# If it's found it sets PROJ_FOUND to TRUE
# and following variables are set:
# PROJ_INCLUDE_DIR
# PROJ_LIBRARY
FIND_PATH(PROJ_INCLUDE_DIR proj_api.h /usr/local/include /usr/include)
FIND_LIBRARY(PROJ_LIBRARY NAMES proj PATH /usr/local/lib /usr/lib)
IF (PROJ_INCLUDE_DIR AND PROJ_LIBRARY)
SET(PROJ_FOUND TRUE)
ENDIF (PROJ_INCLUDE_DIR AND PROJ_LIBRARY)
IF (PROJ_FOUND)
IF (NOT PROJ_FIND_QUIETLY)
MESSAGE(STATUS "Found Proj: ${PROJ_LIBRARY}")
ENDIF (NOT PROJ_FIND_QUIETLY)
ELSE (PROJ_FOUND)
IF (PROJ_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "Could not find Proj")
ENDIF (PROJ_FIND_REQUIRED)
ENDIF (PROJ_FOUND)