I have a g77-compiled library file from a third party and am trying to write Fortran code that calls functions in this library. While pgf77 compiles and links the code, the executable has a broken iargc() function (iargc returns the number of command line arguments). Here’s code to demonstrate the problem:
File test.f simulates my driver program, to be compiled w/pgf77:
program test integer iargc write(6,*) 'iargc=',iargc() call abc() end
File abc.f will be compiled with g77 to produce abc.o, simulating my third-party library:
subroutine abc() write(6,*) 'inside abc' return end
Compile and link with
g77 -c abc.f pgf77 test.f abc.o -lg2c
The -lg2c library is needed to resolve the GNU functions s_wsle, do_lio, and e_wsle which appear in abc.o. Running the code produces incorrect output from iargc():
./a.out 1 2 3 iargc= -1 inside abc
Using pgf77 to compile and link both files produces correct results:
pgf77 test.f abc.f ./a.out 1 2 3 iargc= 3 inside abc
This isn’t helpful for me though since I need to link with a g77-built library.
Anyone know of a fix or work-around for this problem?
Linux 2.6.9-34.ELsmp #1 SMP Wed Mar 8 00:27:03 CST 2006 i686 i686 i386 GNU/Linux
pgf77 6.2-5 32-bit target on x86 Linux
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