Bug 98364

Summary:	pkg-config returning 1 incorrectly when checking a package version
Product:	pkg-config	Reporter:	Jessi Mon'e <jackknifedub>
Component:	src	Assignee:	pkg-config
Status:	RESOLVED NOTOURBUG	QA Contact:
Severity:	normal
Priority:	high	CC:	admin
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Jessi Mon'e 2016-10-20 22:36:12 UTC

On Arch with all current updates when attempting to build a package from the AUR, i3-gaps-next-git, there is a check as so:

ifneq ($(shell $(PKG_CONFIG) --atleast-version=1.14.4 cairo 2>/dev/null && echo 1),1)
$(error "cairo >= 1.14.4 missing")

This returns 1 causing the build to fail

Running the basic check outside of the context of the code still returns one:

pkg-config --atleast-version=1.14.4 cairo ; echo $?
1

Running the pkg-config version check returns the correct version:

pkg-config --modversion cairo
1.14.6


Why is pkg-config returning one to this check when the build of the package being checked is clearly within the requirements?

You can view the source where the first check I stated is implemented here:

https://github.com/Airblader/i3/blob/gaps-next/common.mk

The maintainer is also confused as to this behavior, as seen here:

https://github.com/Airblader/i3/issues/102

Comment 1 Jessi Mon'e 2016-10-21 21:18:07 UTC

Now also appearing for Users on Fedora as the latest release is beginning to be used elsewhere.

Source: https://github.com/Airblader/i3/issues/102

Hopefully this user follows my advice and relays the exact specs of what is happening here.

Comment 2 Dan Nicholson 2016-10-22 06:26:01 UTC

Seems to work fine on my system. Can you run again with --debug and --print-errors? Something like "pkg-config --atleast-version=1.14.4 --debug --print-errors"?

Alternatively, the normal way to do this is "pkg-config --exists 'cairo >= 1.14.4'". The --atleast/exact/max-version options are legacy interfaces.

Comment 3 Jessi Mon'e 2016-10-22 17:43:07 UTC

pkg-config --exists 'cairo >= 1.14.4' still returns one.


Looking through the debug commands you gave though I see it can't find the package "egl.pc". After some searching, I found this to be a component given by Mesa. Reinstalling the Mesa package and dependencies seems to have given me the required file. This should be good now. Thank you for the help!

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