user/libvpx: fix build on armv7

user/libvpx/APKBUILD

@@ -15,9 +15,12 @@ source="https://storage.googleapis.com/downloads.webmproject.org/releases/webm/$
 builddir="$srcdir"/$pkgname-$pkgver
 build() {
 	cd "$builddir"
-	# build fix for arm
-	export CROSS=" "
+	# fix build for armv7
+	case "$CTARGET" in
+	armv7-*-*-*eabihf) export CFLAGS="-mfloat-abi=hard";;
+	esac
 	bash ./configure \
+		--extra-cflags="$CFLAGS" \
 		--enable-pic \
 		--enable-libs \
 		--enable-runtime-cpu-detect \