1 files changed, 64 insertions, 0 deletions
diff --git a/3rdparty/zlib/CMakeLists.txt b/3rdparty/zlib/CMakeLists.txt
new file mode 100644
index 000000000..4002908f5
--- /dev/null
+++ b/3rdparty/zlib/CMakeLists.txt
@@ -0,0 +1,64 @@
+
+#
+# local copy
+#
+if( WIN32 )
+message( STATUS "Detecting local ZLIB" )
+find_path( ZLIB_LOCAL_INCLUDE_DIRS "zlib.h"
+	PATHS "${CMAKE_CURRENT_SOURCE_DIR}/include"
+	NO_DEFAULT_PATH )
+find_library( ZLIB_LOCAL_LIBRARIES
+	NAMES zdll
+	PATHS "${CMAKE_CURRENT_SOURCE_DIR}/lib"
+	NO_DEFAULT_PATH )
+mark_as_advanced( ZLIB_LOCAL_LIBRARIES )
+mark_as_advanced( ZLIB_LOCAL_INCLUDE_DIRS )
+
+if( ZLIB_LOCAL_LIBRARIES AND ZLIB_LOCAL_INCLUDE_DIRS )
+	file( STRINGS "${ZLIB_LOCAL_INCLUDE_DIRS}/zlib.h" ZLIB_H REGEX "^#define[ \t]+ZLIB_VERSION[ \t]+\"[^\"]+\".*$" )
+	string( REGEX REPLACE "^.*ZLIB_VERSION[ \t]+\"([^\"]+)\".*$" "\\1" ZLIB_VERSION "${ZLIB_H}" )
+	message( STATUS "Found local ZLIB: ${ZLIB_LOCAL_LIBRARIES} (found version ${ZLIB_VERSION})" )
+	set( HAVE_LOCAL_ZLIB ON
+		CACHE BOOL "zlib is available as a local copy" )
+	mark_as_advanced( HAVE_LOCAL_ZLIB )
+else()
+	foreach( _VAR ZLIB_LOCAL_LIBRARIES ZLIB_LOCAL_INCLUDE_DIRS )
+		if( NOT "${_VAR}" )
+			set( MISSING_VARS ${MISSING_VARS} ${_VAR} )
+		endif()
+	endforeach()
+	message( STATUS "Could NOT find local ZLIB (missing: ${MISSING_VARS})" )
+	unset( HAVE_LOCAL_ZLIB CACHE )
+endif()
+message( STATUS "Detecting local ZLIB - done" )
+endif( WIN32 )
+
+
+#
+# system
+#
+message( STATUS "Detecting system ZLIB" )
+unset( ZLIB_LIBRARIES CACHE )
+unset( ZLIB_INCLUDE_DIRS CACHE )
+find_package( ZLIB )
+set( ZLIB_SYSTEM_LIBRARIES ${ZLIB_LIBRARIES}
+	CACHE PATH "system zlib libraries" )
+set( ZLIB_SYSTEM_INCLUDE_DIRS ${ZLIB_INCLUDE_DIRS}
+	CACHE PATH "system zlib include directories" )
+mark_as_advanced( ZLIB_SYSTEM_LIBRARIES )
+mark_as_advanced( ZLIB_SYSTEM_INCLUDE_DIRS )
+
+if( ZLIB_SYSTEM_LIBRARIES AND ZLIB_SYSTEM_INCLUDE_DIRS )
+	set( HAVE_SYSTEM_ZLIB ON
+		CACHE BOOL "zlib is available on the system" )
+	mark_as_advanced( HAVE_SYSTEM_ZLIB )
+else()
+	unset( HAVE_SYSTEM_ZLIB CACHE )
+endif()
+message( STATUS "Detecting system ZLIB - done" )
+
+
+#
+# configure
+#
+CONFIGURE_WITH_LOCAL_OR_SYSTEM( ZLIB )