Apologies if this ends up being double-posted. Tried submitting from
another account, but it doesn't seem to have been pushed out...
--------------------------
I'm having some problems compiling/linking a 32-bit application on my
Opteron (x86_64) box that is currently running Fedora 11 (with both 64-
and 32-bit dev libs installed). Compilation works perfectly for the
64-bit version, but not the 32-bit. System runs gcc 4.4.1. Code is
actually FORTRAN (using gfortran as compiler), but that isn't the issue.
I also note that it all worked fine under Fedora 9 - I could built 32-
and 64-bit apps without a problem.
Here is the compilation sequence (which again works perfectly for 64-bit).
1. compile Linpack library. Here is the makefile
COMPILER = gfortran
COPTIONS = -c -m32 -O2
Linpack.a:
$(COMPILER) $(COPTIONS) *.f
ar q Linpack.a *.o
make runs fine. No errors for either 64- or 32-bit.
2. cp Linpack.a ../libLinpack.a (i.e., rename and copy it into root
directory containing the main program, which needs to be linked against
Linpack).
3. rm *.o, *.mod files, then run make. Here is the basic elements of the
makefile
COMPILER = gfortran
LINKER = gfortran
COPTIONS = -c -m32 -fimplicit-none -fbounds-check -O2
OBJECTS = mark.o btest.o cvtcas.o headng.o \
<bunch of other *.o files deleted to save space>
mms1: mms1.f $(OBJECTS) MODELC STATUS
$(LINKER) *.o -o mms1 -L/home/me/Desktop/linMMS1/src-gfortran-6.x -lLinpack
mms1.o: mms1.f HEADST MODELC STATUS
$(COMPILER) $(COPTIONS) mms1.f
hyperdist.mod: hyperdist.f
$(COMPILER) $(COPTIONS) hyperdist.f
<sutff deleted>
Compilation of the 40-50 individual *.f files proceeds without error.
The problem arises at the linker step. I get the following error messages:
gfortran *.o -o mms1 -L/home/me/Desktop/linMMS1/src-gfortran-6.x -lLinpack
/usr/bin/ld: skipping incompatible
/home/me/Desktop/linMMS1/src-gfortran-6.x/libLinpack.a when searching
for -lLinpack
/usr/bin/ld: cannot find -lLinpack
collect2: ld returned 1 exit status
make: *** [mms1] Error 1
Well, the library libLinpack.a is definitely there, and was compiled
with -m32, so I'm not sure at all what the problem is - especically, why
it is incompatible. As noted, this problem only happens when I try
32-bit compilation. I tried adding -m32 to the linker call ($(LINKER)
-m32 *.o -o mms1 -L/home/me/Desktop/linMMS1/src-gfortran-6.x -lLinpack),
but that didn't change a thing. But, it did generate a new error message:
gfortran -m32 *.o -o mms1 -L/home/me/Desktop/linMMS1/src-gfortran-6.x
-lLinpack
/usr/bin/ld: crt1.o: No such file: No such file or directory
collect2: ld returned 1 exit status
make: *** [mms1] Error 1
Suggestions? Points to the obvious?
Thanks!
