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Bug 1154 - The /usr/bin/pkg-config symlink is bad
: The /usr/bin/pkg-config symlink is bad
Status: RESOLVED FIXED
Product: Runtime
Classification: Mono
Component: packaging
: unspecified
: Macintosh Mac OS
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Assigned To: Bugzilla
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Reported: 2011-09-30 08:57 EDT by Tor Lillqvist
Modified: 2013-02-11 22:36 EST (History)
6 users (show)

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Description Tor Lillqvist 2011-09-30 08:57:53 EDT
I don't think it is proper that the Mono Framework installs a
/usr/bin/pkg-config symlink. It is misleading, and as this is a Mono-specific
pkg-config, it doesn't scan /usr/lib/pkgconfig (which Apple mysteriously
provides even if they don't provide a pkg-config) anyway.

A configure script for some random software might see this pkg-config and think
that the system provides pkg-config in the "normal" way and try to use it to
get information about MacOSX system libs, and then fail. (If there was no such
bogus /usr/bin/pkg-config, that configure script hopefully would realize that
it needs to use other methods to find out cflags and libs.)

This is not just a hypothetical example, but happens when building LibreOffice.
The configure script in some of the 3rd-party libraries bundled with it get
confused by this /usr/bin/pkg-config.
Comment 1 David Laban 2012-05-02 07:15:15 EDT
This also causes breakages in https://trac.macports.org/ticket/25318 and a
number of homebrew things.

/usr/bin is owned by Apple. /usr/local is also in users' $PATH by default, and
is a more appropriate place for user-installed crap.

See also this post from debian regarding PKG_CONFIG_LIBDIR:
http://lists.debian.org/debian-embedded/2004/06/msg00122.html

I have deleted the /usr/bin/pkg-config symlink from my system. If you want a
patch to make this less broken, I will provide, but I don't want to try to fix
it until I know why it was broken.

What is it that you are trying to achieve by breaking pkg-config anyway?
Avoiding known-broken versions of packages on the system? (You can do that by
specifying your  package versions more precicely.). Maybe I should dig through
the revision history to find out who to shout at.
Comment 2 mistydemeo 2012-06-17 12:10:32 EDT
Following up on what David said, I'd like to see this resolved in Mono as well.
Installing a Mono-specific pkg-config anywhere in the standard PATH is a bad
idea, as it's likely to be picked up by general builds. Since it's already
otherwise nicely sequestered in the Mono framework, it's really not necessary
to create the symlink in the first place.
Comment 3 mistydemeo 2012-11-14 12:47:25 EST
Has there been any progress or followup for this issue? I reencountered this
problem today when a Homebrew user encountered a build error that we eventually
tracked down to this: https://github.com/mxcl/homebrew/issues/16050

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