gdk-pixbuf2 @2.40.0_1 +universal doesn't compile with jpeg and jasper

[someuser12]

Under Mac OS 10.13 and 10.11, while configuring gdk-pixbuf2 @2.40.0_1 with +universal variant set, the build tool meson tries to detect the libraries JPEG and jasper by launching clang on a minimal C program involving only proprocessor directives:

Command line:  /usr/bin/clang -I/opt/local/include /opt/local/var/macports/build
/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_po
rts_graphics_gdk-pixbuf2/gdk-pixbuf2/work/build/meson-private/tmp9kj3a3pw/testfi
le.c -pipe -E -P -Os -arch x86_64 -arch i386 -P -O0 -std=c99

Since clang is launched with the flags -E -arch x86_64 -arch i386, it fails with message clang: error: cannot use 'cpp-output' output with multiple -arch options and meson concludes erroneously that the jpeg library is absent.

The same happens with jasper later on.

As a consequence, all software built again the resulting gdk-pixbuf2 (e.g. qiv) will be unable to load or display any JPEG file.

Ugly workaround:

• sudo port extract gdk-pixbuf2 +x11+universal

• Manually edit `port work gdk-pixbuf2`/gdk-pixbuf-2.40.0/meson.build to replace, on line 312, cc.has_header('jpeglib.h') with 1==1 and, on line 363, cc.has_header('jasper/jasper.h') with true

• sudo port install gdk-pixbuf2 .

[mf2k (Frank Schima)]

In the future, please add the port maintainer(s) to Cc (port info --maintainers gdk-pixbuf2), if any.

[kencu (Ken)]

two options that come immediately to mind would be to try adding the "muniversal 1.0" portgroup, or alternately to null out the extra CPP flags and leave it to the (non-universal archs) default CPP flags.

The muniversal PG is probably more reliable, I would think.

[mascguy (Christopher Nielsen)]

Take over Dave's tickets for GTK and friends, now that he's formally dropped maintainership. Boo! ;-)

[mascguy (Christopher Nielsen)]

Evan/Sergey, do you folks have this port installed with +universal anywhere?

Don't waste any time on building, if you don't have it already. But just curious whether our current state is better now, as many changes/updates have occurred over the past two years.

[mascguy (Christopher Nielsen)]

@someuser12 is this still an issue, as of today?

[someuser12]

I can't reproduce the issue any more since configuring gdk-pixbuf2 2.42.8 (the present version) on Mac OS 10.13 with the +universal variant makes no difference with the default variant.

[mascguy (Christopher Nielsen)]

Replying to someuser12:

I can't reproduce the issue any more since configuring gdk-pixbuf2 2.42.8 (the present version) on Mac OS 10.13 with the +universal variant makes no difference with the default variant.

Great, glad the issue is resolved!