(my first post here, so... be gentle) I have relatively fresh 8.0 install from official distro, which I'm building up with cooker modules. I have read some posts here that suggest one has to start by installing the full cooker? I hope not. I would expect that the current cooker modules should still be close enough to 8.0 that I can build it up incrementally? However, when I downloaded gsl-0.9-3mdk.src.rpm and tried to rebuild, I get an error: make[2]: Entering directory `/usr/src/RPM/BUILD/gsl-0.9/utils' /bin/sh ../libtool --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I.. -O2 -march=i686 -c placeholder.c libtool: ltconfig version `' does not match ltmain.sh version `1.3.5' Fatal configuration error. See the libtool docs for more information. make[2]: *** [placeholder.lo] Error 1 make[2]: Leaving directory `/usr/src/RPM/BUILD/gsl-0.9/utils' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/usr/src/RPM/BUILD/gsl-0.9' make: *** [all-recursive-am] Error 2 Bad exit status from /var/tmp/rpm-tmp.68108 (%build) I checked the version: [root@dell2pe SPECS]# rpm -q libtool libtool-1.3.5-13mdk and I even rebuilt and reinstalled libtool, to make sure it was consistent. Followed my nose around the libtool documentation and found that if I put: ./ltconfig ltmain.sh immediately in front of the make in the gsl.spec, then the build proceeds. I'm not sure if that is the right fix, or why I should need to do that. I haven't got far enough to test the actual gsl that was built. -- Juhan Leemet Logicognosis, Inc.