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# macro that checks for grass installation in specified directory
MACRO (CHECK_GRASS G_PREFIX)
FIND_PATH (GRASS_INCLUDE_DIR grass/version.h ${G_PREFIX}/include)
SET (GRASS_LIBRARIES_FOUND TRUE)
SET (GRASS_LIB_NAMES gis vect dig2 dbmiclient dbmibase shape dgl rtree datetime linkm form gproj)
FOREACH (LIB ${GRASS_LIB_NAMES})
MARK_AS_ADVANCED ( GRASS_LIBRARY_${LIB} )
SET(LIB_PATH NOTFOUND)
FIND_LIBRARY(LIB_PATH NAMES grass_${LIB} PATHS ${G_PREFIX}/lib NO_DEFAULT_PATH)
IF (LIB_PATH)
SET (GRASS_LIBRARY_${LIB} ${LIB_PATH})
ELSE (LIB_PATH)
SET (GRASS_LIBRARY_${LIB} NOTFOUND)
SET (GRASS_LIBRARIES_FOUND FALSE)
ENDIF (LIB_PATH)
ENDFOREACH (LIB)
# LIB_PATH is only temporary variable, so hide it (is it possible to delete a variable?)
MARK_AS_ADVANCED(LIB_PATH)
IF (GRASS_INCLUDE_DIR AND GRASS_LIBRARIES_FOUND)
SET (GRASS_FOUND TRUE)
SET (GRASS_PREFIX ${G_PREFIX})
ENDIF (GRASS_INCLUDE_DIR AND GRASS_LIBRARIES_FOUND)
MARK_AS_ADVANCED ( GRASS_INCLUDE_DIR )
ENDMACRO (CHECK_GRASS)
###################################
# search for grass installations
# list of paths which to search - user's choice as first
SET (GRASS_PATHS ${GRASS_PREFIX} /usr/lib/grass c:/msys/local)
# mac-specific path
IF (APPLE)
SET (GRASS_PATHS ${GRASS_PATHS}
/Applications/GRASS-6.3.app/Contents/MacOS
/Applications/GRASS.app/Contents/Resources
)
ENDIF (APPLE)
IF (WITH_GRASS)
FOREACH (G_PREFIX ${GRASS_PATHS})
IF (NOT GRASS_FOUND)
CHECK_GRASS(${G_PREFIX})
ENDIF (NOT GRASS_FOUND)
ENDFOREACH (G_PREFIX)
ENDIF (WITH_GRASS)
###################################
IF (GRASS_FOUND)
FILE(READ ${GRASS_INCLUDE_DIR}/grass/version.h VERSIONFILE)
# We can avoid the following block using version_less version_equal and
# version_greater. Are there compatibility problems?
STRING(REGEX MATCH "[0-9]+\\.[0-9]+\\.[^ ]+" GRASS_VERSION ${VERSIONFILE})
STRING(REGEX REPLACE "^([0-9]*)\\.[0-9]*\\..*$" "\\1" GRASS_MAJOR_VERSION ${GRASS_VERSION})
STRING(REGEX REPLACE "^[0-9]*\\.([0-9]*)\\..*$" "\\1" GRASS_MINOR_VERSION ${GRASS_VERSION})
STRING(REGEX REPLACE "^[0-9]*\\.[0-9]*\\.(.*)$" "\\1" GRASS_MICRO_VERSION ${GRASS_VERSION})
# Add micro version too?
# How to numerize RC versions?
MATH( EXPR GRASS_NUM_VERSION "${GRASS_MAJOR_VERSION}*10000 + ${GRASS_MINOR_VERSION}*100")
IF (NOT GRASS_FIND_QUIETLY)
MESSAGE(STATUS "Found GRASS: ${GRASS_PREFIX} (${GRASS_VERSION})")
ENDIF (NOT GRASS_FIND_QUIETLY)
ELSE (GRASS_FOUND)
IF (WITH_GRASS)
IF (GRASS_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "Could not find GRASS")
ELSE (GRASS_FIND_REQUIRED)
MESSAGE(STATUS "Could not find GRASS")
ENDIF (GRASS_FIND_REQUIRED)
ENDIF (WITH_GRASS)
ENDIF (GRASS_FOUND)
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