audacity: build with ninja (#7421)

media-sound/audacity/audacity-2.4.2.recipe

@@ -71,7 +71,7 @@ BUILD_PREREQUIRES="
 	cmd:gcc$secondaryArchSuffix
 	cmd:gettext$secondaryArchSuffix
 	cmd:ld$secondaryArchSuffix
-	cmd:make
+	cmd:ninja
 	cmd:pkg_config$secondaryArchSuffix
 	cmd:which
 	cmd:wx_config$secondaryArchSuffix
@@ -79,16 +79,16 @@ BUILD_PREREQUIRES="
 
 BUILD()
 {
-	mkdir -p build
-	cd build
-	cmake .. $cmakeDirArgs -DCMAKE_BUILD_TYPE=Release \
+	cmake -S . -B build -G Ninja \
+		$cmakeDirArgs \
+		-DCMAKE_BUILD_TYPE=Release \
 		-DUSE_MIDI=OFF \
 		-Daudacity_use_pa_oss=NO -Daudacity_use_pa_jack=off \
 		-Daudacity_use_ffmpeg=off -Daudacity_use_midi=off -Daudacity_use_pch=no
-	make $jobArgs
+	cmake --build build $jobArgs
 }
 
 INSTALL()
 {
-	make -C build install
+	cmake --install build $jobArgs
 }