Move miniz definitions to file

cmake/bimg/3rdparty/miniz.cmake

@@ -0,0 +1,23 @@
+# bgfx.cmake - bgfx building in cmake
+# Written in 2017 by Joshua Brookover <joshua.al.brookover@gmail.com>
+#
+# To the extent possible under law, the author(s) have dedicated all copyright
+# and related and neighboring rights to this software to the public domain
+# worldwide. This software is distributed without any warranty.
+#
+# You should have received a copy of the CC0 Public Domain Dedication along with
+# this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+
+# Ensure the directory exists
+if(NOT IS_DIRECTORY ${BIMG_DIR})
+	message(SEND_ERROR "Could not load bimg, directory does not exist. ${BIMG_DIR}")
+	return()
+endif()
+
+if(NOT MINIZ_LIBRARIES)
+	file(GLOB_RECURSE #
+		 MINIZ_SOURCES #
+		 ${BIMG_DIR}/3rdparty/tinyexr/deps/miniz/miniz.* #
+	)
+	set(MINIZ_INCLUDE_DIR ${BIMG_DIR}/3rdparty/tinyexr/deps/miniz)
+endif()

cmake/bimg/CMakeLists.txt

@@ -8,6 +8,7 @@
 # You should have received a copy of the CC0 Public Domain Dedication along with
 # this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
 
+include(3rdparty/miniz.cmake)
 include(bimg.cmake)
 include(bimg_decode.cmake)
 include(bimg_encode.cmake)

cmake/bimg/bimg.cmake

@@ -22,7 +22,7 @@ set_target_properties(bimg PROPERTIES FOLDER "bgfx")
 target_include_directories(
 	bimg PUBLIC $<BUILD_INTERFACE:${BIMG_DIR}/include>$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 	PRIVATE ${BIMG_DIR}/3rdparty/astc-encoder/include #
-			${BIMG_DIR}/3rdparty/tinyexr/deps/miniz #
+			${MINIZ_INCLUDE_DIR} #
 )
 
 file(
@@ -35,9 +35,12 @@ file(
 	${BIMG_DIR}/3rdparty/astc-encoder/source/*.cpp #
 	${BIMG_DIR}/3rdparty/astc-encoder/source/*.h #
 	#
-	${BIMG_DIR}/3rdparty/tinyexr/deps/miniz/miniz.* #
+	${MINIZ_SOURCES}
 )
 
 target_sources(bimg PRIVATE ${BIMG_SOURCES})
 
-target_link_libraries(bimg PUBLIC bx)
+target_link_libraries(
+	bimg PUBLIC bx #
+				${MINIZ_LIBRARIES} #
+)

cmake/bimg/bimg_decode.cmake

@@ -18,20 +18,24 @@ add_library(bimg_decode STATIC)
 
 # Put in a "bgfx" folder in Visual Studio
 set_target_properties(bimg_decode PROPERTIES FOLDER "bgfx")
-
 target_include_directories(
 	bimg_decode PUBLIC $<BUILD_INTERFACE:${BIMG_DIR}/include> $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 	PRIVATE ${BIMG_DIR}/3rdparty #
-			${BIMG_DIR}/3rdparty/tinyexr/deps/miniz #
+			${MINIZ_INCLUDE_DIR} #
 )
 
-file(GLOB_RECURSE BIMG_DECODE_SOURCES #
-	 ${BIMG_DIR}/include/* #
-	 ${BIMG_DIR}/src/image_decode.* #
-	 #
-	 ${BIMG_DIR}/3rdparty/tinyexr/deps/miniz/miniz.* #
+file(
+	GLOB_RECURSE
+	BIMG_DECODE_SOURCES #
+	${BIMG_DIR}/include/* #
+	${BIMG_DIR}/src/image_decode.* #
+	#
+	${MINIZ_SOURCES} #
 )
 
 target_sources(bimg_decode PRIVATE ${BIMG_DECODE_SOURCES})
 
-target_link_libraries(bimg_decode PUBLIC bx)
+target_link_libraries(
+	bimg_decode PUBLIC bx #
+					   ${MINIZ_LIBRARIES} #
+)

cmake/bimg/bimg_encode.cmake

@@ -26,7 +26,7 @@ target_include_directories(
 			${BIMG_DIR}/3rdparty/astc-encoder/include #
 			${BIMG_DIR}/3rdparty/iqa/include #
 			${BIMG_DIR}/3rdparty/nvtt #
-			${BIMG_DIR}/3rdparty/tinyexr/deps/miniz #
+			${MINIZ_INCLUDE_DIR} #
 )
 
 file(