config.gcc (m68k-*-linux*): Add with_arch.

	* config.gcc (m68k-*-linux*): Add with_arch.  Add sysroot-suffix.h
	to tm_file.  Add m68k/t-floatlib, m68k/t-linux & m68k/t-mlibs to
	tmake_file.
	* config/m68k/t-linux: New.
	* doc/install.texi: Document m68k-*-linux is now multilibbed by
	default.

From-SVN: r137557

gcc/ChangeLog

+2008-07-07  Maxim Kuvyrkov  <maxim@codesourcery.com>
+	    Nathan Sidwell  <nathan@codesourcery.com>
+
+	* config.gcc (m68k-*-linux*): Add with_arch.  Add sysroot-suffix.h
+	to tm_file.  Add m68k/t-floatlib, m68k/t-linux & m68k/t-mlibs to
+	tmake_file.
+	* config/m68k/t-linux: New.
+	* doc/install.texi: Document m68k-*-linux is now multilibbed by
+	default.
+
+2008-07-07  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* config/m68k/t-cf (MULTILIB_EXTRA_OPTS): Add no-mac.
+	* config/m68k/m68k-devices.def: Remove multilibs that only differ
+	by MAC/EMAC.
+
 2008-07-06  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* gcc.c (execute): Fix -Wc++-compat warning.

gcc/config.gcc

@@ -1459,9 +1459,11 @@ m68k-*-linux*)		# Motorola m68k's running GNU/Linux
 				# aka the GNU/Linux C library 6.
 	default_m68k_cpu=68020
 	default_cf_cpu=5475
-	tm_file="${tm_file} dbxelf.h elfos.h svr4.h linux.h m68k/linux.h"
+	with_arch=${with_arch:-m68k}
+	tm_file="${tm_file} dbxelf.h elfos.h svr4.h linux.h m68k/linux.h ./sysroot-suffix.h"
 	extra_options="${extra_options} m68k/ieee.opt"
 	tm_defines="${tm_defines} MOTOROLA=1"
+	tmake_file="${tmake_file} m68k/t-floatlib m68k/t-linux m68k/t-mlibs"
 	# if not configured with --enable-sjlj-exceptions, bump the
 	# libgcc version number
 	if test x$sjlj != x1; then

gcc/config/m68k/t-linux

+EXTRA_MULTILIB_PARTS=crtbegin.o crtend.o crtbeginS.o crtendS.o crtbeginT.o
+
+# Only include multilibs for CPUs with an MMU.
+M68K_MLIB_CPU += && match(FLAGS, "FL_MMU")
+
+# This rule uses MULTILIB_MATCHES to generate a definition of
+# SYSROOT_SUFFIX_SPEC.
+sysroot-suffix.h: $(srcdir)/config/m68k/print-sysroot-suffix.sh
+	$(SHELL) $(srcdir)/config/m68k/print-sysroot-suffix.sh \
+	  "$(SYSTEM_HEADER_DIR)/../.." "$(MULTILIB_MATCHES)" \
+	  "$(MULTILIB_OPTIONS)" > $@

gcc/doc/install.texi

@@ -3427,15 +3427,17 @@ applications.  There are no standard Unix configurations.
 @end html
 @heading @anchor{m68k-x-x}m68k-*-*
 By default, @samp{m68k-*-aout}, @samp{m68k-*-coff*},
-@samp{m68k-*-elf*}, @samp{m68k-*-rtems} and @samp{m68k-*-uclinux}
+@samp{m68k-*-elf*}, @samp{m68k-*-rtems},  @samp{m68k-*-uclinux} and
+@samp{m68k-*-linux}
 build libraries for both M680x0 and ColdFire processors.  If you only
 need the M680x0 libraries, you can omit the ColdFire ones by passing
 @option{--with-arch=m68k} to @command{configure}.  Alternatively, you
 can omit the M680x0 libraries by passing @option{--with-arch=cf} to
-@command{configure}.  These targets default to 5206 code when
+@command{configure}.  These targets default to 5206 or 5475 code as
+appropriate for the target system when
 configured with @option{--with-arch=cf} and 68020 code otherwise.
 
-The @samp{m68k-*-linux-gnu}, @samp{m68k-*-netbsd} and
+The @samp{m68k-*-netbsd} and
 @samp{m68k-*-openbsd} targets also support the @option{--with-arch}
 option.  They will generate ColdFire CFV4e code when configured with
 @option{--with-arch=cf} and 68020 code otherwise.