Move iqa sources to file

cmake/bimg/3rdparty/iqa.cmake

@@ -0,0 +1,25 @@
+# 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 IQA_LIBRARIES)
+	file(
+		GLOB_RECURSE #
+		IQA_SOURCES #
+		${BIMG_DIR}/3rdparty/iqa/include/**.h #
+		${BIMG_DIR}/3rdparty/iqa/source/**.c #
+	)
+	set(IQA_INCLUDE_DIR ${BIMG_DIR}/3rdparty/iqa/include)
+endif()

cmake/bimg/CMakeLists.txt

@@ -12,6 +12,7 @@ include(3rdparty/loadpng.cmake)
 include(3rdparty/libsquish.cmake)
 include(3rdparty/astc_encoder.cmake)
 include(3rdparty/tinyexr.cmake)
+include(3rdparty/iqa.cmake)
 include(3rdparty/miniz.cmake)
 include(bimg.cmake)
 include(bimg_decode.cmake)

cmake/bimg/bimg_encode.cmake

@@ -25,9 +25,9 @@ target_include_directories(
 	PRIVATE ${BIMG_DIR}/3rdparty #
 			${LIBSQUISH_INCLUDE_DIR} #
 			${ASTC_ENCODER_INCLUDE_DIR}
-			${BIMG_DIR}/3rdparty/iqa/include #
 			${BIMG_DIR}/3rdparty/nvtt #
 			${TINYEXR_INCLUDE_DIR} #
+			${IQA_INCLUDE_DIR} #
 			${MINIZ_INCLUDE_DIR} #
 )
 
@@ -49,8 +49,7 @@ file(
 	${BIMG_DIR}/3rdparty/pvrtc/**.cpp #
 	${BIMG_DIR}/3rdparty/pvrtc/**.h #
 	${TINYEXR_SOURCES}
-	${BIMG_DIR}/3rdparty/iqa/include/**.h #
-	${BIMG_DIR}/3rdparty/iqa/source/**.c #
+	${IQA_SOURCES} #
 )
 
 target_sources(bimg_encode PRIVATE ${BIMG_ENCODE_SOURCES})
@@ -61,6 +60,7 @@ target_link_libraries(
 		   ${LIBSQUISH_LIBRARIES} #
 		   ${ASTC_ENCODER_LIBRARIES} #
 		   ${TINYEXR_LIBRARIES} #
+		   ${IQA_LIBRARIES} #
 )
 
 include(CheckCXXCompilerFlag)