ffmpeg @4.4.2_3: will not build universal on M1 Mac / Ventura: GNU assembler not found, install/update gas-preprocessor

[kencu (Ken)]

--->  Configuring ffmpeg
--->  Configuring ffmpeg for architecture arm64
Executing:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_multimedia_ffmpeg/ffmpeg/work/ffmpeg-4.4.2-arm64" && ./configure --prefix=/opt/local --enable-swscale --enable-avfilter --enable-avresample --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-librsvg --enable-libtheora --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libsoxr --enable-libspeex --enable-libass --enable-libbluray --enable-libzimg --enable-libzvbi --enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype --enable-libfribidi --enable-zlib --disable-libjack --disable-libopencore-amrnb --disable-libopencore-amrwb --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --disable-indev=jack --enable-opencl --disable-outdev=xv --enable-audiotoolbox --enable-videotoolbox --enable-sdl2 --disable-securetransport --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --enable-libaom --enable-librav1e --enable-libsvtav1 --enable-gpl --enable-postproc --enable-libx264 --enable-libx265 --enable-libxvid --enable-libvidstab --arch=arm64 
GNU assembler not found, install/update gas-preprocessor

[kencu (Ken)]

some kind of an issue with the way arch is being set, it appears:

/usr/bin/clang -I/opt/local/include -isysroot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.sdk -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -I$(SRC_PATH)/compat/dispatch_semaphore -DPIC '-arch -fPIC -c -o /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_multimedia_ffmpeg/ffmpeg/work/.tmp/ffconf.UwrV5WJb/test.o /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_multimedia_ffmpeg/ffmpeg/work/.tmp/ffconf.UwrV5WJb/test.S
clang: error: no such file or directory: ''-arch'; did you mean '-arch'?

[kencu (Ken)]

It likes this version better:

% diff -u Portfile `port file ffmpeg`
--- Portfile	2022-12-29 23:19:54
+++ /opt/local/var/macports/sources/rsync.macports.org/macports/release/tarballs/ports/multimedia/ffmpeg/Portfile	2023-01-02 14:10:04
@@ -304,7 +304,7 @@
     foreach arch ${configure.universal_archs} {
         set merger_host($arch) ""
         lappend merger_configure_args($arch) --arch=${arch}
-        lappend merger_configure_env($arch)  ASFLAGS='-arch ${arch}'
+        lappend merger_configure_env($arch)  "ASFLAGS=-arch ${arch}"
     }
     if {[string match "*86*" ${configure.universal_archs}]} {
         depends_build-append port:nasm

[kencu (Ken)]

Yup, that did it:

% port -v installed ffmpeg
The following ports are currently installed:
  ffmpeg @4.4.2_3+gpl2+universal (active) requested_variants='+universal' platform='darwin 22' archs='arm64 x86_64' date='2023-01-02T14:13:41-0800'

[MichaelGDev48 (Michael G)]

a bit related but , How did you get past all the dependencies I been trying to get a universal variant of ffmpeg but i keep running into issues when configuring dependencies related to ffmpeg hence all my reports of bugs with building universal packages Much appreciation to you though,youbeen great at fixing these packages

[kencu (Ken)]

Hey, you're welcome -- TBH I have just been doing this for a very very long time now...

I think I have most/all of the deps done, but if there are any missing let me know and I'll see if I can push the fixes.

[MichaelGDev48 (Michael G)]

that seems to be all of them now just waiting on the patch you made to ffmpeg to be pushed :)

[kencu (Ken)]

In 01ec793c58620cfa359558fd6af848e4176ae0fe/macports-ports (master):

ffmpeg* - minor tweak to ASFLAGS

closes: #66607