openimageio: clean up

media-libs/openimageio/openimageio-1.8.6.recipe

@@ -8,7 +8,7 @@ world, and is also incorporated into several commercial products."
 HOMEPAGE="https://github.com/OpenImageIO/"
 COPYRIGHT="2008-2017 Larry Gritz et al."
 LICENSE="BSD (3-clause)"
-REVISION="9"
+REVISION="10"
 SOURCE_URI="$HOMEPAGE/oiio/archive/Release-$portVersion.tar.gz"
 CHECKSUM_SHA256="9e070d56c0f71496ca77290a78abd948af9c2799983bc27c22a36dcc16ffe2e3"
 SOURCE_FILENAME="openimageio-$portVersion.tar.gz"
@@ -112,9 +112,7 @@ defineDebugInfoPackage openimageio$secondaryArchSuffix \
 
 BUILD()
 {
-	mkdir -p build
-	cd build
-	cmake .. \
+	cmake -Bbuild -S. -DCMAKE_BUILD_TYPE=RelWithDebInfo \
 		-DUSE_OPENSSL=ON \
 		-DUSE_PYTHON=OFF \
 		-DCMAKE_CXX_FLAGS="-DBOOST_NO_CXX11_CONSTEXPR" \
@@ -124,13 +122,12 @@ BUILD()
 		-DMAN_INSTALL_DIR=$manDir \
 		-DUSE_EXTERNAL_PUGIXML=ON \
 		$cmakeDirArgs
-	make $jobArgs
+	make -C build $jobArgs
 }
 
 INSTALL()
 {
-	cd build
-	make install
+	make -C build install
 
 	prepareInstalledDevelLibs libOpenImageIO libOpenImageIO_Util
 	fixPkgconfig