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g77 -mno-cygwin
- To: cygwin at sourceware dot cygnus dot com
- Subject: g77 -mno-cygwin
- From: Simon Cooke <cooke at mmace dot nrl dot navy dot mil>
- Date: Thu, 2 Nov 2000 12:02:57 -0500 (EST)
I tried to use g77 from the latest net release (GNU Fortran 0.5.25 19991024)
with the -mno-cygwin flag, and a trivial example fails to compile:
program testg77
end
gives
$ g77 -mno-cygwin testg77.f
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(s_stop.o)(.text+0x2f):s_stop.c: undefined
reference to `_impure_ptr'
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(s_stop.o)(.text+0x51):s_stop.c: undefined
reference to `_impure_ptr'
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(s_stop.o)(.text+0x6d):s_stop.c: undefined
reference to `_impure_ptr'
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(err.o)(.text+0x49f):err.c: undefined
reference to `_impure_ptr'
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(err.o)(.text+0x4c1):err.c: undefined
reference to `_impure_ptr'
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(err.o)(.text+0x50b):err.c: more
undefined references to `_impure_ptr' follow
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(err.o)(.text+0x76f):err.c: undefined
reference to `__errno'
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(err.o)(.text+0x83d):err.c: undefined
reference to `__errno'
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(err.o)(.text+0x8ab):err.c: undefined
reference to `__errno'
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(endfile.o)(.text+0x5d):endfile.c: undefined
reference to `__errno'
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(endfile.o)(.text+0x368):endfile.c: undefined
reference to `__errno'
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(open.o)(.text+0x28a):open.c: more
undefined references to `__errno' follow
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(sig_die.o)(.text+0x16):sig_die.c: undefined
reference to `_impure_ptr'
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(sig_die.o)(.text+0x30):sig_die.c: undefined
reference to `_impure_ptr'
/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2/libg2c.a(sig_die.o)(.text+0x46):sig_die.c: undefined
reference to `_impure_ptr'
collect2: ld returned 1 exit status
$
A similar problem with gcc was reported in the mailing list
http://sources.redhat.com/ml/cygwin/2000-05/msg00834.html
and reportedly fixed
http://sources.redhat.com/ml/cygwin/2000-06/msg00938.html
Must I use a mingw32 version of libg2c.a, or would a similar fix be possible
for g77?
Thanks for any help,
Simon
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