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# Find Proj
#
# 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 NAMES proj.h)
FIND_LIBRARY(PROJ_LIBRARY NAMES proj proj_i)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Proj DEFAULT_MSG PROJ_LIBRARY PROJ_INCLUDE_DIR)
mark_as_advanced(PROJ_LIBRARY PROJ_INCLUDE_DIR)
IF (PROJ_INCLUDE_DIR AND PROJ_LIBRARY)
SET(PROJ_FOUND TRUE)
ENDIF (PROJ_INCLUDE_DIR AND PROJ_LIBRARY)
IF (PROJ_FOUND)
FILE(READ ${PROJ_INCLUDE_DIR}/proj.h proj_version)
STRING(REGEX REPLACE "^.*PROJ_VERSION_MAJOR +([0-9]+).*$" "\\1" PROJ_VERSION_MAJOR "${proj_version}")
STRING(REGEX REPLACE "^.*PROJ_VERSION_MINOR +([0-9]+).*$" "\\1" PROJ_VERSION_MINOR "${proj_version}")
STRING(REGEX REPLACE "^.*PROJ_VERSION_PATCH +([0-9]+).*$" "\\1" PROJ_VERSION_PATCH "${proj_version}")
MESSAGE(STATUS "Found Proj ${PROJ_VERSION_MAJOR}.${PROJ_VERSION_MINOR}")
IF (PROJ_VERSION_MAJOR EQUAL 6 AND PROJ_VERSION_MINOR EQUAL 0)
MESSAGE (FATAL_ERROR "PROJ 6.0 is not supported. Use 6.1.0 or higher.")
ENDIF()
IF ((PROJ_VERSION_MAJOR EQUAL 6) AND (PROJ_VERSION_MINOR EQUAL 3) AND (PROJ_VERSION_PATCH EQUAL 0))
MESSAGE (FATAL_ERROR "MapServer known to crash with PROJ 6.3.0. Use 6.3.1 or higher.")
ENDIF()
ADD_DEFINITIONS(-DPROJ_VERSION_MAJOR=${PROJ_VERSION_MAJOR})
ENDIF (PROJ_FOUND)
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