net-misc/icaclient: switch to ffmpeg-compat:6

Not the maintainer nor know this application, but blocking ffmpeg-7
is rather nasty so going ahead with changing this.

Normally it'd use its bundled libav* inside ${ICAROOT}/lib but the
ebuild does `doexe *.so` which excludes libav's *.so.{60,58}.

Arguably using bundled would be fair if it's going to use some ancient
ffmpeg and potentially block future cleanups, but not going to impose
this change myself.

Given ffmpeg-compat:6 is not in LDPATH to avoid conflicts/mismatch, do
symlinks inside that directory which matches how it'd normally be used.

Not tried runtime but it seems to find them fine:

$ ldd libctxVideoDecoder.so
	libavcodec.so.60 => /opt/Citrix/ICAClient/lib/libavcodec.so.60
	libavutil.so.58 => /opt/Citrix/ICAClient/lib/libavutil.so.58

Closes: https://bugs.gentoo.org/967025
Signed-off-by: Ionen Wolkens <ionen@gentoo.org>

net-misc/icaclient/icaclient-25.05.0.44-r1.ebuild

@@ -66,8 +66,6 @@ RDEPEND="
 	media-libs/alsa-lib
 	media-libs/fontconfig
 	media-libs/freetype
-	>=media-video/ffmpeg-6.0
-	<media-video/ffmpeg-7
 	media-libs/gst-plugins-base:1.0
 	media-libs/gstreamer:1.0
 	media-libs/libogg
@@ -78,6 +76,7 @@ RDEPEND="
 	media-libs/mesa
 	media-libs/speex
 	media-libs/speexdsp
+	media-video/ffmpeg-compat:6
 	sys-apps/util-linux
 	llvm-runtimes/libcxx
 	llvm-runtimes/libcxxabi
@@ -173,6 +172,10 @@ src_install() {
 	exeinto "${ICAROOT}"/lib
 	doexe lib/*.so
 
+	# ffmpeg-compat libraries are not in LDPATH, symlink them (bug #967025)
+	dosym -r {/usr/lib/ffmpeg6/$(get_libdir),"${ICAROOT}"/lib}/libavutil.so.58
+	dosym -r {/usr/lib/ffmpeg6/$(get_libdir),"${ICAROOT}"/lib}/libavcodec.so.60
+
 	for dest in "${ICAROOT}"{,/nls/en{,.UTF-8}} ; do
 		insinto "${dest}"
 		doins nls/en.UTF-8/eula.txt