QGIS/cmake/FindExpat.cmake

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CMake
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# CMake module to search for Expat library
# (library for parsing XML files)
#
# If it's found it sets EXPAT_FOUND to TRUE
# and following variables are set:
# EXPAT_INCLUDE_DIR
# EXPAT_LIBRARY
FIND_PATH(EXPAT_INCLUDE_DIR expat.h /usr/local/include /usr/include c:/msys/local/include)
FIND_LIBRARY(EXPAT_LIBRARY NAMES expat PATHS /usr/local/lib /usr/lib c:/msys/local/lib)
IF (EXPAT_INCLUDE_DIR AND EXPAT_LIBRARY)
SET(EXPAT_FOUND TRUE)
ENDIF (EXPAT_INCLUDE_DIR AND EXPAT_LIBRARY)
IF (EXPAT_FOUND)
IF (NOT EXPAT_FIND_QUIETLY)
MESSAGE(STATUS "Found Expat: ${EXPAT_LIBRARY}")
ENDIF (NOT EXPAT_FIND_QUIETLY)
ELSE (EXPAT_FOUND)
IF (EXPAT_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "Could not find Expat")
ELSE (EXPAT_FIND_REQUIRED)
IF (NOT EXPAT_FIND_QUIETLY)
MESSAGE(STATUS "Could not find Expat")
ENDIF (NOT EXPAT_FIND_QUIETLY)
ENDIF (EXPAT_FIND_REQUIRED)
ENDIF (EXPAT_FOUND)