On 24/08/2006, at 11:03 PM, Peter O'Gorman wrote:
Following my last post I have done some digging on AC_FC_DUMMY_MAIN.
Using gcc4 and gfortran FLIBS include '-lgfortranbegin -
lgfortran'. libgfortranbegin defines _main and needs _MAIN__
Since the test program also defines _main it will never link
because of the multiply defined symbol! So the test for a dummy
main will never succeed.
This seems odd, my libgfortranbegin is a static archive, is yours?
Are you passing odd flags like -all_load which would force the main
defined in libgfortranbegin to be loaded?
What happens for me is that the main defined in the object is used
and the one in libgfortranbegin is ignored because a main has
already been found. At least that is what used to happen for me, I
haven't looked at it in quite a while...
Funny that. I am definitely not using -all_load and libgfortranbegin
is static, or more correctly the libgfortranbegins are static. The
compiler is the one distributed with the R 2.3.1 MacOS binary
package. So it has fat (ppc i386) compiler executables and three
possible targets (ppc ppc64 and i386). It is built from FSF not
Apple sources. You could get the compiler and try it yourself.
I will hack about with it some more.
Bill
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