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Date:	Thu, 17 Apr 2014 11:56:52 +0200
From:	Peter Rosin <peda AT lysator DOT liu DOT se>
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To:	cygwin AT cygwin DOT com
Subject:	Re: libtool: link: object name conflicts in archive
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In-Reply-To:	<534F94CC.5010606@ludens.elte.hu>

On 2014-04-17 10:46, szgyg wrote:
> On 4/16/2014 9:21 AM, Gisela Haschmich wrote:
>>
>> /bin/sh ../../libtool --tag=F77   --mode=link gfortran     -o liby12.la  y12mae.lo y12maf.lo y12mbe.lo y12mbf.lo y12mce.lo y12mcf.lo y12mde.lo y12mdf.lo y12mfe.lo y12mge.lo y12mhe.lo -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.2 -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/../../../../lib -L/lib/../lib -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/../../.. -lgfortran -lquadmath -lm -lcygwin -ladvapi32 -lshell32 -luser32 -lkernel32 -lltdl  -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.2 -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/../../../../lib -L/lib/../lib -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/../../.. -lgfortran -lquadmath -lm -lcygwin -ladvapi32 -lshell32 -luser32 -lkernel32 -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.2 -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/../../../../lib -L/lib/../lib -L/usr/li
>>   b/../lib -L/usr/lib/gcc/x86_64-pc-cygwin/4.8.2/../../.. -lgfortran -lquadmath -lm -lcygwin -ladvapi32
>> -lshell32 -luser32 -lkernel32 -lltdl
>> libtool: link: lib -OUT:.libs/liby12.lib .libs/y12mae.o .libs/y12maf.o .libs/y12mbe.o .libs/y12mbf.o .libs/y12mce.o .libs/y12mcf.o .libs/y12mde.o .libs/y12mdf.o .libs/y12mfe.o .libs/y12mge.o .libs/y12mhe.o
>> ../../libtool: line 1117: lib: command not found
> 
> After running configure there is a file named libtool in the source directory. Replace it with libtool from /bin, then run make. (You may need to install the libtool package in cygwin's setup.)
> 
> They have this in configure.in:
> -----
> if test "x$FC" = "x" ; then
>         AC_PROG_F77
>         if test "x$F77" = "x" ; then
>                 AC_MSG_ERROR([Need a working Fortran compiler])
>         fi
>         AC_F77_LIBRARY_LDFLAGS
>         LIBS="$LIBS $F77LIBS"
> else
>         F77="$FC"
>         F77LIBS="$FCLIBS"
>         LIBS="$LIBS $FCLIBS"
> fi
> -----
> so libtool thinks it's F77 but not G77 and tries to use the native linker.

Ouch, that's just br0ken.

It would probably work better to move AC_PROG_F77 out of the if
as below, otherwise language support is added to Libtool since
it "sees" the AC_PROG_F77 macro, but Libtool then gets thoroughly
confused when the macro expansion is not executed.

AC_PROG_F77
if test "x$FC" = "x" ; then
	if test "x$F77" = "x" ; then
		AC_MSG_ERROR([Need a working Fortran compiler])
	fi
	AC_F77_LIBRARY_LDFLAGS
	LIBS="$LIBS $F77LIBS"
else
	F77="$FC"
	F77LIBS="$FCLIBS"
	LIBS="$LIBS $FCLIBS"
fi

Side note, I believe it's $FLIBS, not $F77LIBS. But it has been many years
since I used Fortran at all, and I have never used it with Autotools.

Cheers,
Peter



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