Re: libtool and IRIX 6.5 and C++

[libtool]

On Tue, Aug 07, 2001 at 04:15:52AM +0100, Gary V. Vaughan wrote:
> Does the attached patch work for you?

I don't think this will work. Looking at the autoconf macros in
autoconf 2.52:
  $ cd /opt/TWWfsw/autoconf25/share/autoconf [autoconf 2.52]
  $ grep GCC= *
  aclang.m4:GCC=`test $ac_compiler_gnu = yes && echo yes`
  autoconf.m4f:GCC=`test $ac_compiler_gnu = yes && echo yes`
  $ cd /opt/TWWfsw/autoconf/share/autoconf [autoconf 2.13]
  $ grep GCC= *
  acspecific.m4:  GCC=yes
  acspecific.m4:  GCC=
  autoconf.m4f:  GCC=yes
  autoconf.m4f:  GCC=
  autoheader.m4f:  GCC=yes
  autoheader.m4f:  GCC=

The problem with your patch is it sets with_gcc=no *only* if $GCC is
unset. However, if GCC is not being used, $GCC is set but the value is
NULL.
  $ echo ${a-no}
  no
  $ a=
  $ echo ${a-no}
  [empty line]

How portable is:
  $ echo ${a:=no}
  no
  $ a=
  $ echo ${a:=no}
  no

So, it seems we're limited to:
--- ltmain.in   2001/08/05 11:29:09     1.269
+++ ltmain.in   2001/08/07 16:36:45
@@ -1171,7 +1171,7 @@ EOF
       # so, if we see these flags be careful not to treat them like -L
       -L[A-Z][A-Z]*:*)
        case $with_gcc/$host in
-       no/*-*-irix*)
+       no/*-*-irix*|/*-*-irix*)
          compile_command="$compile_command $arg"
          finalize_command="$finalize_command $arg"
          ;;

or:
--- libtool.m4  2001/08/06 17:52:37     1.218
+++ libtool.m4  2001/08/07 16:37:48
@@ -3306,7 +3308,7 @@ LTCC=$LTCC
 CC=$lt_[]_LT_AC_TAGVAR(compiler, $1)
 
 # Is the compiler the GNU C compiler?
-with_gcc=$_LT_AC_TAGVAR(GCC, $1)
+with_gcc=${_LT_AC_TAGVAR(GCC, $1):=no}
 
 # The linker used to build libraries.
 LD=$lt_[]_LT_AC_TAGVAR(LD, $1)

I did a grep of := in the libtool sources and didn't find anything so
doubt it is portable. I prefer the fix to the case statement.

> Cheers,
>       Gary.
> 
> On Tuesday 07 August 2001 3:50 am, Steve M. Robbins wrote:
> > Hi,
> >
> > I'm having trouble with libtool under IRIX 6.5 while using the vendor
> > C++ compiler,
> >
> > I need libtool to pass along "-LANG:std" during both compiling and
> > linking.  The logic that would do that looks like:
> >
> >       # The native IRIX linker understands -LANG:*, -LIST:* and -LNO:*
> >       # so, if we see these flags be careful not to treat them like -L
> >       -L[A-Z][A-Z]*:*)
> >     case $with_gcc/$host in
> >     no/*-*-irix*)
> >
> > Unfortunately, the generated libtool sets with_gcc to the empty
> > string, and this is never triggered :-/
> >
> > This is with the CVS libtool, as of this afternoon.
> >
> > -Steve
> 
> -- 
>   ())_. Gary V. Vaughan     gary@(oranda.demon.co.uk|gnu.org)
>   ( '/  Research Scientist  http://www.oranda.demon.co.uk       ,_())____
>   / )=  GNU Hacker          http://www.gnu.org/software/libtool  \'      `&
> `(_~)_  Tech' Author        http://sources.redhat.com/autobook   =`---d__/



-- 
albert chin (address@hidden)