I have been having various problems with g77 3.4 on and off again and it has been difficult to pin down.
[BTW scipy installed ok for me but is there a non-atlas (ie. Apple BLAS/LAPACK) version in the pipeline?]
Originally I found one of the 173 programs in the CCP4 package I maintain would cause the g77 compiler to seg fault. This might be a red herring, but when I updated to Xcode v. 1.1, the problem went away. However I now have a runtime error in this program (called molrep) that did not occur in older versions.
Thinking that this was a ccp4 related problem, I posted the question to the CCP4 mailing list, asking if anyone else had this problem with g77 on OS X or other platforms. I got no definitive replies (but lots of scolding from other unix platform users for using an "experimental" version of the compiler, and I dutifully provided the explanation I got awhile ago when I asked about this) but I also got the following reply from the head CCP4 guy:
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Hi Bill,
The g77 3.4 compilation time problem is something that has been driving me crazy. It seems to occur mostly with 3.4.0-20031015. It can occur for refmac5, molrep or mosflm (5.0-beta release). Different people report if for different programs. I do not see it on either of my 3 macs. Reducing the compilation level to -O1 seems to work, as does -fno-unroll-loops (although this may be having the effect of turning off other loop optimisations). From the molrep and mosflm examples the error seems to occur in subroutines which contain large looks where the loop dimension is passed as a parameter.
Charles Ballard CCP4
FWIW none of these suggestions helped. If anyone reading this uses my fink ccp4 package and has found a problem, please let me know.
Bill Scott
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