[PlanetCCRMA] [LAU] [LAD] mudita24 1.02 -- improved envy24control mixer/router for ice1712-based sound-cards

Niels Mayer nielsmayer at gmail.com
Sun Aug 8 10:34:32 PDT 2010

On Sun, Aug 8, 2010 at 7:59 AM, Geoff King <gsking1 at gmail.com> wrote:
> I tried the source version of your 1.0.2 mudita release. I'm having
> problem with the build step. This is with FC13.   Any thoughts?
> -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0
> -lgdk_pixbuf-2.0 -lpangocairo-1.0 -lcairo -lpango-1.0 -lfreetype
> -lfontconfig -lgobject-2.0 -lgmodule-2.0 -lgthread-2.0 -lrt -lglib-2.0
> -lasound
> /usr/bin/ld: levelmeters.o: undefined reference to symbol 'log10@@GLIBC_2.0'
> /usr/bin/ld: note: 'log10@@GLIBC_2.0' is defined in DSO /lib/libm.so.6

Geoff -- thanks for reporting this issue. It is a configuration
mistake in this release which doesn't show up in F12, which is what
I'm still using. Apparently, Fedora13 wants it to link with "-lm", but
F12 links happily without "-lm" ...So I never saw this
misconfiguration when I tested my distro build on F12...

As a quick fix, you should be able to link successfully by adding
"-lm" to the end of the linking command:
gcc -I/usr/include/gtk-2.0 -I/usr/lib64/gtk-2.0/include
-I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0
-I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include
-I/usr/include/pixman-1 -I/usr/include/freetype2
-I/usr/include/libpng12 -I/usr/include/alsa   -g -O2   -o
envy24control envy24control.o levelmeters.o midi.o mixer.o patchbay.o
hardware.o driverevents.o volume.o profiles.o config.o -lgtk-x11-2.0
-lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lgdk_pixbuf-2.0
-lpangocairo-1.0 -lcairo -lpango-1.0 -lfreetype -lfontconfig
-lgobject-2.0 -lgmodule-2.0 -lglib-2.0 -lasound -lm

The correct approach is to add "-lm" to the configuration files (i
thought i had, but mistakenly modified the generated file rather than
the configuration input files -- and  "make dist-gzip"  didn't of
course include my modification) ... I will need to fix this
build-blunder in the next release. Sorry.

If anybody has a suggestion on the most portable/reliable way of doing
this, please let me know.
I believe adding a line to configure.in-gtk2 like
would do the trick, but you never know what happens to a simple line
of script out in the wild :-).

Is the above an accepted&proper way of adding "-lm" to an autoconf file?

-- Niels

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