On Thu, 2005-10-06 at 13:39 -0400, Lennart Sorensen wrote: > On Thu, Oct 06, 2005 at 12:39:04PM -0400, Adam C Powell IV wrote: > > Greetings, > > > > In an effort to finally complete the mpich transition, last night I > > built and uploaded libf2c2 for arm (why it didn't autobuild is beyond > > me), then tried to build scalapack. The build failed when trying to > > link a binary: > > > > gcc -o /home/hazelsct/scalapack-1.7/TESTING/xigemr pigemrdrv.o > > -L /home/hazelsct/scalapack-1.7 -lscalapack-lam -lblacsCinit-lam > > -lblacs-lam -lblacsCinit-lam -lmpi -llapack -lblas -lf2c -lm > > /usr/lib/gcc/arm-linux-gnu/4.0.2/../../../libf2c.so: undefined reference > > to `MAIN__' > > collect2: ld returned 1 exit status > > make[2]: *** [/home/hazelsct/scalapack-1.7/TESTING/xigemr] Error 1 > > make[2]: Leaving directory `/home/hazelsct/scalapack-1.7/REDIST/TESTING' > > make[1]: *** [redistexe] Error 2 > > make[1]: Leaving directory `/home/hazelsct/scalapack-1.7' > > make: *** [build-stamp-lam] Error 2 > > > > PPC died in the same step with a different error, see > > http://buildd.debian.org/fetch.php?&pkg=scalapack&ver=1.7-9&arch=powerpc&stamp=1125887722&file=log&as=raw > > > > Since this works on eight architectures, I suspect problems in the arm > > and PPC toolchains. Any ideas? > > It seems gcc 4.x is much different in treatment of functions which are > only called from assembly code. It seems to figure that if it sees > nothing using the function (and it doesn't look in the inline assembly) > then it can optimize it away. Then the linker of course whines about > the function called from assembly doesn't exist anywhere. > > This hit mozilla and nvu on arm, among others. It is probably similar > in this case. > > In mozilla's case it was fixed by adding a flag telling the compiler > that the function is in fact used even if it appears not to be.
Thanks for the tip. Turns out libf2c is trying to link to a fortran program, and this is a C program, so there never was a MAIN__(). It looks like removing -lf2c fixes this (the compilation works fine), so I'm attempting a rebuild without it. Hopefully this will get scalapack into testing, so a bunch of other packages (mpich, petsc, netpipe, blacs etc.) can go in with it... Thanks, -Adam -- GPG fingerprint: D54D 1AEE B11C CE9B A02B C5DD 526F 01E8 564E E4B6 Welcome to the best software in the world today cafe! http://www.take6.com/albums/greatesthits.html -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
