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Message-ID:	<A9E96A79C068D211A6A90000C07BDF0D88F478@crtsmail.corp.riotinto.org>
From:	"Billinghurst, David (CRTS)" <David DOT Billinghurst AT riotinto DOT com>
To:	"'cygwin AT sources DOT redhat DOT com'" <cygwin AT sources DOT redhat DOT com>
Subject:	g77 -lm doesn't work
Date:	Mon, 1 Jan 2001 13:19:56 -0000
MIME-Version:	1.0
X-Mailer:	Internet Mail Service (5.5.2650.21)

Using cygwin 1.17-1, if I try to link any Fortran program with -lm I get the
error

/usr/lib/gcc-lib/i686-pc-cygwin/2.95.2-6/../../../../i686-pc-cygwin/lib/libm
.a(libcmain.o)(.text+0x7f): undefined reference to `WinMain AT 16'
collect2: ld returned 1 exit status

Now libm.a is a symbolic link to libcygwin.a.  I believe the root cause is
linking libcygwin.a before libg2c.a since for any Fortran program I see

g77 foo.f			OK
g77 foo.f -lm			FAIL
g77 foo.f -lg2c -lm		OK
g77 foo.f -lcygwin		FAIL
g77 foo.f -lg2c -lcygwin		OK

Now the obvious solution is to not use -lm, but then I have to edit
Makefiles (or even worse - hack Dejagnu so I can run the g77 testsuite).
Once upon a time the cygwin libm.a was an empty archive.  Can we revert to
this?

+++++++++++++++++++++++++++++++++++++++++
(Mr) David Billinghurst
Comalco Research Centre
PO Box 316, Thomastown, Vic, Australia, 3074
Phone:	+61 3 9469 0642
FAX:	+61 3 9462 2700
Email:	David DOT Billinghurst AT riotinto DOT com DOT au






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