* Alexandre Duret-Lutz wrote on Sat, Oct 14, 2006 at 04:54:46PM CEST:
> >>> "RW" == Ralf Wildenhues <[EMAIL PROTECTED]> writes:
> RW> - For aesthetics, it is desirable to have the source file name appear at
> RW> the end of the command lines at compile time
> RW> (see the comment in automake/lib/am/depend2.am for a rationale).
>
> Plus some tools (like libtool) assume that the last argument is
> the source file.
Oh, yes (strictly speaking, at least). Thanks.
> RW> - The gcc3 depmode, when issued with help of the `depcomp' script, will
> RW> be slowed down somewhat now. This isn't really an issue for makefiles
> RW> generated by Automake, as they bypass the script at compile time with
> RW> the %FASTDEP% switch.
>
> Agreed. Could you add a short comment in depcomp's gcc3 mode to
> explain that while you are at it?
Done, applied like this.
Cheers,
Ralf
2006-10-14 Ralf Wildenhues <[EMAIL PROTECTED]>
* lib/depcomp (gcc3): Put dependency extraction flags before the
`-c' flag, so they appear at the same position as in %FASTDEP%
mode in depend2.am. Fixes build failure for FreeBSD's c89,
which ignores unknown options only after the first non-option.
Bug report against M4 by Nelson H. F. Beebe.
Index: lib/depcomp
===================================================================
RCS file: /cvs/automake/automake/lib/depcomp,v
retrieving revision 1.58
diff -u -r1.58 depcomp
--- lib/depcomp 9 Jul 2006 16:09:43 -0000 1.58
+++ lib/depcomp 14 Oct 2006 17:10:08 -0000
@@ -92,7 +92,20 @@
## gcc 3 implements dependency tracking that does exactly what
## we want. Yay! Note: for some reason libtool 1.4 doesn't like
## it if -MD -MP comes after the -MF stuff. Hmm.
- "$@" -MT "$object" -MD -MP -MF "$tmpdepfile"
+## Unfortunately, FreeBSD c89 acceptance of flags depends upon
+## the command line argument order; so add the flags where they
+## appear in depend2.am. Note that the slowdown incurred here
+## affects only configure: in makefiles, %FASTDEP% shortcuts this.
+ for arg
+ do
+ case $arg in
+ -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
+ *) set fnord "$@" "$arg" ;;
+ esac
+ shift # fnord
+ shift # $arg
+ done
+ "$@"
stat=$?
if test $stat -eq 0; then :
else
