VAX Ultrix bootstrap failure: cc: -o would overwrite libgcc/_mulsi3.o

[John David Anglin]

> > I have been attempting to bootstrap gcc-2.96 under VAX Ultrix 4.3.  The
> > following problem occurs building libgcc:
> > 
> > ...
> > mkdir libgcc
> > cc -DIN_LIBGCC1 -O -I. -I../../gcc -I../../gcc/config -I../../gcc/../include -c
> > libgcc1.c -o libgcc/_mulsi3.o
> > cc: -o would overwrite libgcc/_mulsi3.o
> > make[3]: *** [libgcc/_mulsi3.o] Error 8

I believe the following patch corrects the problem.  Will somebody review it
and install if ok?

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)

2000-05-17 J. David Anglin <dave@hiauly1.hia.nrc.ca>

	* configure.in Initialize NO_MINUS_C_MINUS_O if no -c and -o.
	* mklibgcc.in Add missing -DL$name when compiling modules in libgcc1.c.
	* configure (Rebuilt).

--- configure.in.orig	Wed May 17 14:55:10 2000
+++ configure.in	Wed May 17 15:24:06 2000
@@ -322,6 +322,9 @@
 # Find the native compiler
 AC_PROG_CC
 AC_PROG_CC_C_O
+if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
+  NO_MINUS_C_MINUS_O=yes
+fi
 AC_SUBST(NO_MINUS_C_MINUS_O)
 
 gcc_AC_C_LONG_DOUBLE
--- mklibgcc.in.orig	Sun May 14 17:36:04 2000
+++ mklibgcc.in	Wed May 17 15:58:31 2000
@@ -106,9 +106,9 @@
 
       echo $out: $libgcc1_c_dep
       if [ -z "@NO_MINUS_C_MINUS_O@" ]; then
-	echo "	$oldcc_compile" $flags -c libgcc1.c -o $out
+	echo "	$oldcc_compile" $flags -DL$name -c libgcc1.c -o $out
       else
-	echo "	$oldcc_compile" $flags -c libgcc1.c
+	echo "	$oldcc_compile" $flags -DL$name -c libgcc1.c
 	echo "	mv libgcc1${objext} $out"
       fi