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Old 08-03-2006, 02:26 PM   #1
Registered: Jul 2006
Posts: 102

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need xfoil..for which i need fortran compiler to work

need xfoil and downloaded it...
SO i got as far as "make xfoil" using gfortran even though it said it needed f77.(added the flag -ff2c so it is compatible with f77 code)..this is when it says this:
../plotlib/libPltDP.a(ps_subs.o): In function `bitpat_':
ps_subs.f.text+0x78): undefined reference to `rshift_'
ps_subs.f.text+0xf9): undefined reference to `rshift_'
collect2: ld returned 1 exit status
make: *** [xfoil] Error 1

This is what the ps_sub.f file (the required portion) says:

c--- Shift the mask until the low order bit is 1 to start...
imask = mask
do n = 1, 16
ibitold = and(1,imask)
if(ibitold.NE.0) go to 5
nshft = n
imask = rshift(imask,1)
end do
5 nout = 0
if(nshft.GE.16) return
nbits = 0

anyone know how or what to do?i cant find anything on google.
Old 08-04-2006, 11:20 PM   #2
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It's not a compiler-error, it's a linker error. Whatever your "different"
compiler does to object files doesn't seem to work with the linker. Try
using the compiler it suggests.

Old 08-16-2006, 06:57 AM   #3
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Registered: Aug 2006
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It sounds like the fortran runtime from gfortran is missing something (probably and intrinsic) that your package needs, which is why you have a link problem.
I'm having more luck in general with the compiler/runtime.


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