I've just recompiled GCC 4.0.2 for sparc-sun-solaris2.9 with fortran
language enabled. To test it, I found short hello world program on the
net (included).
If I produce 32-bit binary by simply using "gfortran hello.f", it
compiles, but the resulting binary exits immediatelly (no output). If
I produce 64-bit binary using "gfortran -m64 hello.f", the program
prints hello world in an infinite loop. Hmph...
The only "unusual" thing on my system was small manual fix to have both
32-bit and 64-bit GMP installed with same prefix. The fix was to
compare gmp.h file from 32-bit and 64-bit build and merge them (so that
I can use same gmp.h file for compiling both 32-bit and 64-bit
programs) by changing lines that define __GMP_BITS_PER_MP_LIMB and
GMP_LIMB_BITS like this:
#ifdef _LP64
#define __GMP_BITS_PER_MP_LIMB 64
#else /* _ILP32 */
#define __GMP_BITS_PER_MP_LIMB 32
#endif
#ifdef _LP64
#define GMP_LIMB_BITS 64
#else /* _ILP32 */
#define GMP_LIMB_BITS 32
#endif
This looked like the correct way to go. The same ifdef construct is
used throughout system include files (/usr/include) for the same
purpose.
Of course, 32-bit and 64-bit libgmp and libmpfr libraries live each in
its own directory (32-bit in /prefix/lib, 64-bit in
/prefix/lib/sparcv9).
So, the question is, did I broke something by attempting to have both
32-bit and 64-bit GMP library installed simultaniously? Did I miss
anything needed to have both 32-bit and 64-bit GMP available on the
system? Or is there something wrong with gfortran compiler?
The "hello world" program looks like this. I haven't done anything
fortran in a veeeeeeeery long time (last time like in 1992 or
something). Looks to me like it should just print hello world in
endless loop.
c
c Hello, world.
c
Program Hello
implicit none
logical DONE
DO while (.NOT. DONE)
write(*,10)
END DO
10 format('Hello, world.')
END
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