zopfli: clean up

app-arch/zopfli/zopfli-1.0.3.recipe

@@ -4,15 +4,13 @@ compatible compressor programmed in C"
 HOMEPAGE="https://github.com/google/zopfli"
 COPYRIGHT="2011-2018 Google Inc."
 LICENSE="Apache v2"
-REVISION="3"
+REVISION="4"
 SOURCE_URI="$HOMEPAGE/archive/zopfli-$portVersion.tar.gz"
 CHECKSUM_SHA256="e955a7739f71af37ef3349c4fa141c648e8775bceb2195be07e86f8e638814bd"
 SOURCE_DIR="zopfli-zopfli-$portVersion"
 
 ARCHITECTURES="all !x86_gcc2 ?arm ?ppc"
-if [ "$targetArchitecture" = x86_gcc2 ]; then
 SECONDARY_ARCHITECTURES="x86"
-fi
 
 commandBinDir=$binDir
 if [ "$targetArchitecture" = x86_gcc2 ]; then
@@ -53,18 +51,15 @@ BUILD_PREREQUIRES="
 
 BUILD()
 {
-	mkdir -p build && cd build
-	cmake .. \
-		-DCMAKE_BUILD_TYPE=Release \
+	cmake -Bbuild -S. -DCMAKE_BUILD_TYPE=Release \
 		-DCMAKE_INSTALL_PREFIX=$prefix \
 		-DZOPFLI_BUILD_SHARED=ON \
 		-DCMAKE_INSTALL_LIBDIR=$libDir \
 		-DCMAKE_INSTALL_INCLUDEDIR=$includeDir
-	make $jobArgs
+	make -C build $jobArgs
 }
 
 INSTALL()
 {
-	cd build
-	make install
+	make -C build install
 }