#982 libgphoto2 can't find media-libs/gd because of broken gdlib-config check

[Pacho Ramos]

As reported downstream at:
https://bugs.gentoo.org/show_bug.cgi?id=510934

It tries gdlib-config and treats that as regular *-config script. But...

$ gdlib-config --libs
-lXpm -lX11 -ljpeg -lfontconfig -lfreetype -lz -lm

Notice no '-lgd' there. So 'gdlib-config --libs' outputs only libs needed for static linking. libgphoto2 assumes '-lgd' is supposed to be there and fails to link the test program.

Thanks for fixing it

[Marcus Meissner]

well, on openSUSE:

$ gdlib-config --libs
-lgd
$ rpm -qf /usr/bin/gdlib-config
gd-devel-2.0.36.RC1-78.1.2.x86_64

the intent of *-config is to supply the required link lines, and not just the required libraries as far as I understand.

Hmm, but it can perhaps be worked around somehow to cover both cases.

[Michał Górny]

This is because openSUSE is patching gdlib-config. We in Gentoo install the original version without modifications to specifically avoid being source of such an issues.

If you look at the .src.rpm of this gd-devel version, you'd notice the following patch:

Index: config/gdlib-config.in
===================================================================
--- config/gdlib-config.in.orig 2006-10-11 11:46:22.000000000 +0200
+++ config/gdlib-config.in  2007-12-20 03:59:07.000000000 +0100
@@ -71,7 +71,7 @@ while test $# -gt 0; do
    echo @LDFLAGS@
    ;;
     --libs)
-   echo @LIBS@ @LIBICONV@
+   echo -l@GDLIBNAME@
    ;;
     --cflags|--includes)
    echo -I@includedir@

[Marcus Meissner]

I now uncondtionaly also add -lgd to the LIBGD_LIBS variable, which should fix this problem.

[Marcus Meissner]

fixed in 2.5.5 i hope