re PR target/12098 (gcc build fails without gas on ia64-hpux: error: invalid switch '-x')

	PR target/12098
	* configure.ac: Move gas check from mips specific case to common case.
	Do check for GNU as for mips*-*-* and *-*-hpux* targets.
	* configure: Regenerate
	* doc/install.texi: Update.

From-SVN: r105200

gcc/ChangeLog

+2005-10-10  Steve Ellcey  <sje@cup.hp.com>
+
+	PR target/12098
+	* configure.ac: Move gas check from mips specific case to common case.
+	Do check for GNU as for mips*-*-* and *-*-hpux* targets.
+	* configure: Regenerate
+	* doc/install.texi: Update.
+
 2005-10-10  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	PR target/24284

gcc/configure.ac

@@ -2772,7 +2772,14 @@ LCF0:
        then target_cpu_default=MASK_EXPLICIT_RELOCS
        else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
        fi])
+    ;;
+esac
+
+# Mips and HP-UX need the GNU assembler.
+# Linux on IA64 might be able to use the Intel assembler.
 
+case "$target" in
+  mips*-*-* | *-*-hpux* )
     if test x$gas_flag = xyes \
        || test x"$host" != x"$build" \
        || test ! -x "$gcc_cv_as" \
@@ -2784,6 +2791,7 @@ LCF0:
     fi
     ;;
 esac
+
 # ??? Not all targets support dwarf2 debug_line, even within a version
 # of gas.  Moreover, we need to emit a valid instruction to trigger any
 # info to the output file.  So, as supported targets are added to gas 2.11,

gcc/doc/install.texi

@@ -2728,8 +2728,8 @@ longer a multiple of 2 bytes.
 @heading @anchor{hppa-hp-hpux}hppa*-hp-hpux*
 Support for HP-UX version 9 and older was discontinued in GCC 3.4.
 
-We @emph{highly} recommend using gas/binutils on all hppa platforms;
-you may encounter a variety of problems when using the HP assembler.
+We require using gas/binutils on all hppa platforms;
+you may encounter a variety of problems if you try to use the HP assembler.
 
 Specifically, @option{-g} does not work on HP-UX (since that system
 uses a peculiar debugging format which GCC does not know about), unless
@@ -2738,8 +2738,7 @@ you use GAS and GDB@.  It may be helpful to configure GCC with the
 @option{--with-as=@dots{}} options to ensure that GCC can find GAS@.
 
 If you wish to use the pa-risc 2.0 architecture support with a 32-bit
-runtime, you must use either the HP assembler, or gas/binutils 2.11
-or newer.
+runtime, you must use gas/binutils 2.11 or newer.
 
 There are two default scheduling models for instructions.  These are
 PROCESSOR_7100LC and PROCESSOR_8000.  They are selected from the pa-risc