On Fri, 2 Jan 2004, JoeHill wrote:
> When I originally tried to compile mjpegtools from source, I was warned that
> without "nasm", performance would be very poor. So I installed the Mandrake nasm
> package, and proceeded to build. ./configure goes ok, but when I try to 'make' I
> get this error:
>
> /home/joehill/tmp/ccdc9rev.s: Assembler messages:
> /home/joehill/tmp/ccdc9rev.s:625: Error: symbol `NOT_SUPPORTED' is already
> defined make: *** [jdapimin.o] Error 1
Bug in gcc. Change the "-O3" in the Makefile(s) to "-O2" and that
should work around the problem.
> software installed, I am not sure what this error means (actually, this error
> comes up both when I try to build mjpegtools *and* when I try to build
> jpeg-mmx).
The problem has been seen in the past by other folks. GCC ends up
over optimizing a section of code and including the inline'd version
and the actual function (something like that as I recall).
The quickest way to fix the problem is change "-O3" to "-O2"
by manually editing the Makefiles.
Cheers,
Steven Schultz
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