Running pkg-config --list-all with PROJ installed causes segfault

[volleio]

Example of problem

Found this issue debugging the install of RMagick.

Installing PROJ and then running

pkg-config --debug --list-all

causes a segfault while Parsing package file '/usr/local/lib/pkgconfig/proj.pc'.
Running

pkg-config --exists --print-errors "proj"

results in Variable 'datarootdir' not defined in '/usr/local/lib/pkgconfig/proj.pc'. Removing /usr/local/lib/pkgconfig/proj.pc (renaming it to proj.pc.backup) and re-running the pkg-config --list-all command succeeds without segfault.

Problem description

PROJ shouldn't affect pkg-config's ability to list all packages.

Expected Output

pkg-config --list-all should output all of the installed packages in the pkg-config pc paths.

Environment Information

• PROJ version 7.0.0
• MacOS Catalina 10.15.3 (19D76)
• pkg-config version 0.29.2

Installation method

• brew install proj

[hobu]

PROJ shouldn't affect pkg-config's ability to list all packages.

Can you past the proj.pc file here too?

pkg-config also shouldn't segfault ever 😄, but that's pkg-config's issue

[volleio]

Yep, here is my proj.pc contents!

prefix=/usr/local/Cellar/proj/7.0.0
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
datadir=${datarootdir}/proj

Name: PROJ
Description: Coordinate transformation software library
Requires:
Version: 7.0.0
Libs: -L${libdir} -lproj
Libs.private: -lsqlite3 -lstdc++
Cflags: -I${includedir}

[hobu]

hmph, that doesn't look that interesting.

[mwtoews]

@volleio I'm unable to recreate the segfault under Ubuntu 18.04, but let's see if #2067 can resolve this issue. Could you try this proj.pc file content (the new added line is datarootdir=${prefix}/share):

prefix=/usr/local/Cellar/proj/7.0.0
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
datarootdir=${prefix}/share
datadir=${datarootdir}/proj

Name: PROJ
Description: Coordinate transformation software library
Requires:
Version: 7.0.0
Libs: -L${libdir} -lproj
Libs.private: -lsqlite3 -lstdc++
Cflags: -I${includedir}

[volleio]

@mwtoews that resolved it, thank you!