gfortran segfaults on "Hello world"
Thomas Koenig
tkoenig@netcologne.de
Thu Nov 19 07:06:00 GMT 2015
Hi,
> Cygwin64 now offers a choice among 4.9.2-3, 4.9.3-1, and 5.2.0-1. I
> have the last one installed, and in addition a recently built 6.0 on my
> Haswell laptop. Iâm fairly certain I have used the 4.9.3 successfully
> in the past. It looks like you need to update to the current gmp and
> mpfr. Normally, cygwin install.exe would tell you to do that if you
> install a gcc and gfortran built against those.
I just installed 5.2.0, and got the same warning about mismatched
libraries and the same segfault.
> If you really wanted 4.9.3-1 running against the older gmp and mpfr, you
> could build it yourself.
The library versions are *newer* than what both 4.9.3 and 5.2.0 from the
distribution are built against. This may or may not be the cause of the
problem; either way gfortran is currently broken on Cygwin 64.
If your sytem is running fine, don't upgrade :-)
Building gfortran myself under Cygwin has not been a happy experience
for me in the past (although I do it quite regularly on Linux, of
course). Maybe I'll give it a spin.
Regards
Thomas
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