[glib] glib-2.0 .pc file contains non-existing include directory

[traversaro]

Describe the bug
The file installed/x64-linux/debug/lib/pkgconfig/glib-2.0.pc contains a reference to a non-existing include directory.

Environment

• OS: Linux
• Compiler: Not Relevant

To Reproduce
Steps to reproduce the behavior:

1. ./vcpkg install gts:x64-linux
2. Inspect the file installed/x64-linux/debug/lib/pkgconfig/glib-2.0.pc . It contains a reference to -I"${includedir}/glib-2.0" that expands to installed/x64-linux/include/glib-2.0 -I"${libdir}/glib-2.0/include", that expands to installed/x64-linux/debug/lib/glib-2.0/include . However, both directories do not exists, as the only directory that exists is ``installed/x64-linux/include/glib`.

Expected behavior
The .pc file of glib should only contain references to existing directories.

Failure logs
The PR #11273 fails with the following error due to this bug:

CMake Error in graphics/src/CMakeLists.txt:
  Imported target "GTS::GTS" includes non-existent path

    "/mnt/vcpkg-ci/installed/x64-linux/debug/lib/pkgconfig/../../../include/glib-2.0"

  in its INTERFACE_INCLUDE_DIRECTORIES.  Possible reasons include:

  * The path was deleted, renamed, or moved to another location.

  * An install or uninstall procedure did not complete successfully.

  * The installation package was faulty and references files it does not
  provide.

Additional details

Related PR: #11884 .

[PhoebeHui]

@traversaro, thanks for bringing this up!

I have submitted PR #15360 to fix this issue.

[traversaro]

Thanks @PhoebeHui for providing the fix!