FIND_PATH(GPC_INCLUDE_DIR gpc.h HINTS $ENV{GPC_DIR} PATH_SUFFIXES include include/gpcl PATHS /usr/local /usr /opt ) FIND_LIBRARY(GPC_LIBRARY NAMES genpolyclip gpc gpcl agggpc HINTS $ENV{GPC_DIR} PATH_SUFFIXES lib64 lib libs64 libs libs/Win32 libs/Win64 PATHS /usr/local /usr /opt ) include(FindPackageHandleStandardArgs) FIND_PACKAGE_HANDLE_STANDARD_ARGS(GPC DEFAULT_MSG GPC_LIBRARY GPC_INCLUDE_DIR)