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Problem with -funsafe-math-optimizations on alpha-dec-osf4.0f (gcc 3.1)



Hello,

I get un unresolved symbol '__ieee_set_fp_control' when I compile with
'-funsafe-math-optimizations' (or -ffast-math) on Alpha.  

> gcc -v
Reading specs from /freeware/gcc/alpha/lib/gcc-lib/alpha-dec-osf4.0f/3.1/specs
Configured with: /freeware/gcc/gcc/gcc-3.1/configure --prefix=/freeware/gcc --exec-prefix=/freeware/gcc/alpha --with-local-prefix=/freeware/gcc --enable-version-specific-runtime-libs --enable-languages=c++,f77,java --enable-threads=posix alpha-dec-osf4.0f
Thread model: posix

> gcc -o junk speedfp.c -lm
> ./junk
> gcc -ffast-math -o junk speedfp.c -lm
__ieee_set_fp_control
collect2: ld returned 1 exit status

The symbol is
needed in .../gcc-lib/alpha-dec-osf4.0f/3.1/crtfastmath.o.  It appears that
this file is linked in only when '-funsafe...' is on.  However, the link
line is

> gcc -v -ffast-math -o junk speedfp.c -lm
[delete non relevant stuff, split long lines]
 /freeware/gcc/alpha/lib/gcc-lib/alpha-dec-osf4.0f/3.1/collect2 -G 8 -O1 -S \
-call_shared -o junk -rpath /freeware/gcc/alpha/lib /usr/lib/cmplrs/cc/crt0.o \
-L/freeware/gcc/alpha/lib/gcc-lib/alpha-dec-osf4.0f/3.1
-L/usr/lib/cmplrs/cc \
-L/freeware/gcc/alpha/lib/gcc-lib/alpha-dec-osf4.0f/3.1/../../.. \
/var/tmp/cc04boMB.o -lm -lgcc -lgcc_eh -lc -lgcc -lgcc_eh 
/freeware/gcc/alpha/lib/gcc-lib/alpha-dec-osf4.0f/3.1/crtfastmath.o
__ieee_set_fp_control
collect2: ld returned 1 exit status

So crtfastmath.o is added at the end of the line.  But it should be in
front of '-lm' ...

Greetings, 

Bert.

-- 
-------------- eMail Bert.Deknuydt@esat.kuleuven.ac.be ---------------
B.DeKnuydt, PSI-KULeuven                            Tel. +32-16-321880
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-------------- http://www.esat.kuleuven.ac.be/~deknuydt --------------
        Cursed be man! How ungrateful is he! Qur'An 80, 17


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