cegui, missing CMAKE_BUILD_TYPE (#8040)

dev-games/cegui/cegui-0.8.7.recipe

@@ -96,20 +96,17 @@ BUILD_PREREQUIRES="
 
 BUILD()
 {
-	mkdir -p build
-	cd build
-	cmake .. \
+	cmake -Bbuild -S. -DCMAKE_BUILD_TYPE=Release \
 		-DCMAKE_INSTALL_PREFIX:PATH=$prefix \
 		-DSDL2_H_PATH="$portPackageLinksDir/devel~libsdl2_2.0/$relativeIncludeDir/SDL2" \
 		-DSDL2IMAGE_H_PATH="$portPackageLinksDir/devel~libsdl2_2.0/$relativeIncludeDir/SDL2" \
 		-DCEGUI_SAMPLES_ENABLED:BOOL=OFF
-	make $jobArgs
+	make -C build $jobArgs
 }
 
 INSTALL()
 {
-	cd build
-	make install
+	make -C build install
 	mkdir -p $includeDir $dataDir
 	mv $prefix/include/* $includeDir
 	rmdir $prefix/include