Fix synfig breaking CFLAGS and CXXFLAGS

media-gfx/synfig/synfig-1.4.0-r2.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2020 Gentoo Authors
+# Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 #Ebuild based on the booboo overlay version
@@ -23,31 +23,34 @@ IUSE="imagemagick ffmpeg dv openexr truetype jpeg fontconfig opencl"
 DEPEND="
 	~dev-cpp/ETL-${PV}
 	>=dev-cpp/glibmm-2.4:2
-	dev-libs/boost
-	sys-libs/zlib
-	dev-libs/libsigc++:2
 	dev-cpp/libxmlpp:2.6
-	media-libs/libpng
-	media-libs/mlt
-	x11-libs/pango
-	x11-libs/cairo
+	dev-libs/boost:=
+	dev-libs/libsigc++:2
+	media-libs/libpng:=
+	media-libs/mlt:=
 	sci-libs/fftw:3.0
-	ffmpeg? ( media-video/ffmpeg )
-	openexr? ( media-libs/openexr )
-	truetype? ( media-libs/freetype )
+	sys-libs/zlib:=
+	x11-libs/cairo:=
+	x11-libs/pango:=
+	ffmpeg? ( media-video/ffmpeg:= )
 	fontconfig? ( media-libs/fontconfig )
 	jpeg? ( virtual/jpeg )
 	opencl? ( dev-libs/ocl-icd )
+	openexr? ( media-libs/openexr:= )
+	truetype? ( media-libs/freetype:= )
 	"
 RDEPEND="${DEPEND}
-	dv? ( media-libs/libdv )
-	imagemagick? ( media-gfx/imagemagick )
+	dv? ( media-libs/libdv:= )
+	imagemagick? ( media-gfx/imagemagick:= )
 	"
 
-src_prepare() {
-	eapply_user
+PATCHES=(
+	"${FILESDIR}"/${P}-fix-cflags.patch
+)
 
+src_prepare() {
 	default
+
 	eautoreconf
 }