Using and Porting GNU Fortran
On AIX 4.1,
g77 might not build with the native (non-GNU) tools
due to a linker bug in coping with the `-bbigtoc' option which
leads to a `Relocation overflow' error. The GNU linker is not
recommended on current AIX versions, though; it was developed under a
now-unsupported version. This bug is said to be fixed by `update PTF
U455193 for APAR IX75823'.
Compiling with `-mminimal-toc'
might solve this problem, e.g. by adding
BOOT_CFLAGS='-mminimal-toc -O2 -g'
make bootstrap command line.