"pkg-config --variable=builtin_h265_decoder libheif" does not return yes

[hornschorsch]

Tody i tried to compile gimp with support for heic/heif files on my slackware 15.0 system. I installed libde265 and x265 and then built libheif and it correctly statet:

=== Supported formats ===
format        decoding   encoding
HEIC            YES        YES

The configure script of gimp then does the following checks:

can_import_heic=`$PKG_CONFIG --variable=builtin_h265_decoder libheif`
can_export_heic=`$PKG_CONFIG --variable=builtin_h265_encoder libheif`

but "pkg-config --variable=builtin_h265_encoder libheif" does not return "yes", despite the fact that heic encoding and decoding is enabled.

I replaced the two lines with

can_import_heic=yes
can_export_heic=yes

and then i could compile gimp with heic support and it really can load and save heic images then.

What am i missing?

[kmilos]

What am i missing?

See #1062, #758 (comment), and https://gitlab.gnome.org/GNOME/gimp/-/issues/9080

[hornschorsch]

Please see my comment at #758 (comment)

[farindk]

We're not going to reintroduce these pkg-config variables because they make no sense for the way current versions of libheif work.

[fancycode]

See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1078402#24 for a possible fix of the detection code in Gimp 2.10.