In lib/autoconf/fortran.m4 (v2.60 and cvs) there is a macro
_AC_FC_LIBRARY_LDFLAGS which defines FLIBS for linking Fortran code.
Around line 664 is
# Ignore these flags.
-lang* | -lcrt*.o | -lc | -lgcc | -libmil | -LANG:=* | -
LIST:* | -LNO:*)
Darwin/MacOS X also include elements of the C library in
libgcc_s.dylib and libSystem.dylib. While including -lSystem in the
link command seems to be harmless, including -lgcc_s can cause large
links to fail. Neither is necessary because ld automatically
includes them.
The problems are fixed by changing the above lines to:
# Ignore these flags.
-lang* | -lcrt*.o | -lc | -lgcc* | -lSystem | -libmil | -
LANG:=* | -LIST:* | -LNO:*)
I would not expect this to cause problems on other platforms, but I
can't test it.
Regards
Bill Northcott
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