I'm having building synfig project using CMake on Debian Bullseye. The project collaborator mentioned the issue with Debian libmng package not installing pkg-config file as the problem.

Here's the quoted link https://github.com/synfig/synfig/issues/928#issuecomment-554623877

Regards,
Keyikedalube Ndang

I'm having *trouble* building...

Hello Debian maintainers,

Seems I reported this bug against the wrong package. There is a libmng2 package in experimental with the fix applied. Here's the [link](https://metadata.ftp-master.debian.org/changelogs//main/libm/libmng/libmng_2.0.3+dfsg-3_changelog) and a quoted changelog:

libmng (2.0.3+dfsg-3) experimental; urgency=low

  * debian/libmng-dev.install:
    + Install pkgconfig file.
  * debian/rules:
    + Synced from Ubuntu. Thanks!
    + Fixed clean target.
    + Use dh-autoreconf and fix dpkg-buildflags usage.
    + Fixed installation of pkgconfig.
    + Removed -V from dh_makeshlibs, debian/shlibs overrides it.
  * Update debian/shlibs file.

Can that fix be applied on libmng1? Or is it better to pull libmng2 from experimental?

Sorry for the trouble.

I realize since there is a new version of libmng2 along with updated libmng-dev on Debian experimental, applying the same fix (Install pkgconfig file) may not be needed in an older version.

Moreover, libmng package has been left dormant since 2018 https://tracker.debian.org/pkg/libmng

Again, sorry for the trouble.

PS: This bug was reported against the right package ie., libmng-dev and not libmng1. I'm new so a little bit of confusion I had there :)

Sorry, forgot to close this earlier, but libmng-dev now includes the
pkgconfig file as you mentioned earlier with libmng2.