Improve pkg config

[Apteryks]

I think this is an improvement on the current state of things.

I haven't successfully built Inkscape with it yet, but it seems the issue may be more with my packaging of Inkscape or its build system.

[Apteryks]

I'm investigating why CMake prints the following as part of the Inkscape build, following this change:

-- Checking for module 'autotrace'
--   Found autotrace, version 0.40.0
Package pstoedit was not found in the pkg-config search path.
Perhaps you should add the directory containing `pstoedit.pc'
to the PKG_CONFIG_PATH environment variable
Package 'pstoedit', required by 'autotrace', not found
Package pstoedit was not found in the pkg-config search path.
Perhaps you should add the directory containing `pstoedit.pc'
to the PKG_CONFIG_PATH environment variable
Package 'pstoedit', required by 'autotrace', not found
Package pstoedit was not found in the pkg-config search path.
Perhaps you should add the directory containing `pstoedit.pc'
to the PKG_CONFIG_PATH environment variable
Package 'pstoedit', required by 'autotrace', not found
Package pstoedit was not found in the pkg-config search path.
Perhaps you should add the directory containing `pstoedit.pc'
to the PKG_CONFIG_PATH environment variable
Package 'pstoedit', required by 'autotrace', not found
Package pstoedit was not found in the pkg-config search path.
Perhaps you should add the directory containing `pstoedit.pc'
to the PKG_CONFIG_PATH environment variable
Package 'pstoedit', required by 'autotrace', not found
Package pstoedit was not found in the pkg-config search path.
Perhaps you should add the directory containing `pstoedit.pc'
to the PKG_CONFIG_PATH environment variable
Package 'pstoedit', required by 'autotrace', not found
Package pstoedit was not found in the pkg-config search path.
Perhaps you should add the directory containing `pstoedit.pc'
to the PKG_CONFIG_PATH environment variable
Package 'pstoedit', required by 'autotrace', not found
Package pstoedit was not found in the pkg-config search path.
Perhaps you should add the directory containing `pstoedit.pc'
to the PKG_CONFIG_PATH environment variable
Package 'pstoedit', required by 'autotrace', not found
Package pstoedit was not found in the pkg-config search path.
Perhaps you should add the directory containing `pstoedit.pc'
to the PKG_CONFIG_PATH environment variable
Package 'pstoedit', required by 'autotrace', not found
Package pstoedit was not found in the pkg-config search path.
Perhaps you should add the directory containing `pstoedit.pc'
to the PKG_CONFIG_PATH environment variable
Package 'pstoedit', required by 'autotrace', not found

This is emitted when pkg_check_modules(INKSCAPE_DEP REQUIRED autotrace) is used in its CMakeScripts/DefineDependsandFlags.cmake file.

[Apteryks]

That's probably expected and non-fatal; CMake invokes both pkg-config with and without --static, to gather its data.

[Apteryks]

Funny, the freedesktop pkg-config when called with --static fails:

-- Checking for modules 'autotrace;2geom;harfbuzz;pangocairo>=1.44;pangoft2;fontconfig;gsl;gmodule-2.0;libsoup-2.4>=2.42;bdw-gc;lcms2'
--   Package 'pstoedit', required by 'autotrace', not found
CMake Error at /gnu/store/1fzd3ak386lgv7zl28j7zqkviv8wkz8d-cmake-minimal-3.24.2/share/cmake-3.24/Modules/FindPkgConfig.cmake:607 (message):
  A required package was not found
Call Stack (most recent call first):
  /gnu/store/1fzd3ak386lgv7zl28j7zqkviv8wkz8d-cmake-minimal-3.24.2/share/cmake-3.24/Modules/FindPkgConfig.cmake:829 (_pkg_check_modules_internal)
  CMakeScripts/DefineDependsandFlags.cmake:122 (pkg_check_modules)
  CMakeLists.txt:146 (include)


-- Configuring incomplete, errors occurred!
See also "/tmp/guix-build-inkscape-1.3.2.drv-0/build/CMakeFiles/CMakeOutput.log".

pkgconf doesn't fail, perhaps for this use case. I'll raise the issue with CMake.

[Apteryks]

Here's the report I've sent to CMake: https://gitlab.kitware.com/cmake/cmake/-/issues/25692

[lemenkov]

@Apteryks doesn't pass the tests. Could you please take a look?

[Apteryks]

@Apteryks doesn't pass the tests. Could you please take a look?

Hi! Weird, since it works on my Guix system. Perhaps the ld wrapper used in Guix that adds -rpath arguments for each library directory corresponding to each linked library is the reason.

I've added this line to the Makefile.am:

autotrace_LDFLAGS = $(GLIB2_LIBS)

noting that src/main.c uses glib too. I hope it resolves it!