invoke.texi: Document -print-multiarch.

2012-11-14  Matthias Klose  <doko@ubuntu.com>

        * doc/invoke.texi: Document -print-multiarch.
        * doc/install.texi: Document --enable-multiarch.
        * doc/fragments.texi: Document MULTILIB_OSDIRNAMES, MULTIARCH_DIRNAME.
        * configure.ac: Add --enable-multiarch option.
        * configure: Regenerate.
        * Makefile.in (s-mlib): Pass MULTIARCH_DIRNAME to genmultilib.
        enable_multiarch, with_float: New macros.
        if_multiarch: New macro, define in terms of enable_multiarch.
        * genmultilib: Add new argument for the multiarch name.
        * gcc.c (multiarch_dir): Define.
        (for_each_path): Search for multiarch suffixes.
        (driver_handle_option): Handle multiarch option.
        (do_spec_1): Pass -imultiarch if defined.
        (main): Print multiarch.
        (set_multilib_dir): Separate multilib and multiarch names
        from multilib_select.
        (print_multilib_info): Ignore multiarch names in multilib_select.
        * incpath.c (add_standard_paths): Search the multiarch include dirs.
        * cppdefault.h (default_include): Document multiarch in multilib
        member.
        * cppdefault.c: [LOCAL_INCLUDE_DIR, STANDARD_INCLUDE_DIR] Add an
        include directory for multiarch directories.
        * common.opt: New options --print-multiarch and -imultilib.
        * config.gcc <i[34567]86-*-linux* | x86_64-*-linux*> (tmake_file):
        Include i386/t-linux.
        <i[34567]86-*-kfreebsd*-gnu | x86_64-*-kfreebsd*-gnu> (tmake_file):
        Include i386/t-kfreebsd.
        <i[34567]86-*-gnu*> (tmake_file): Include i386/t-gnu.
        * config/i386/t-linux64: Add multiarch names in
        MULTILIB_OSDIRNAMES, define MULTIARCH_DIRNAME.
        * config/i386/t-gnu: New file.
        * config/i386/t-kfreebsd: Likewise.
        * config/i386/t-linux: Likewise.

From-SVN: r193508

1 files changed, 12 insertions, 3 deletions

diff --git a/gcc/genmultilib b/gcc/genmultilib
index dc4751b..09b6346 100644
--- a/gcc/genmultilib
+++ b/gcc/genmultilib
@@ -84,6 +84,8 @@
 # This argument can be used together with MULTILIB_EXCEPTIONS and will take
 # effect after the MULTILIB_EXCEPTIONS.
 
+# The optional ninth argument is the multiarch name.
+
 # The last option should be "yes" if multilibs are enabled.  If it is not
 # "yes", all GCC multilib dir names will be ".".
 
@@ -133,7 +135,8 @@ extra=$5
 exclusions=$6
 osdirnames=$7
 multilib_required=$8
-enable_multilib=$9
+multiarch=$9
+enable_multilib=${10}
 
 echo "static const char *const multilib_raw[] = {"
 
@@ -261,6 +264,9 @@ fi
 # names.
 toosdirnames=
 defaultosdirname=
+if [ -n "${multiarch}" ]; then
+  defaultosdirname=::${multiarch}
+fi
 if [ -n "${osdirnames}" ]; then
   set x ${osdirnames}
   shift
@@ -268,6 +274,9 @@ if [ -n "${osdirnames}" ]; then
     case "$1" in
       .=*)
         defaultosdirname=`echo $1 | sed 's|^.=|:|'`
+	if [ -n "${multiarch}" ]; then
+	  defaultosdirname=${defaultosdirname}:${multiarch}
+	fi
 	shift
 	;;
       *=*)
@@ -353,13 +362,13 @@ for combo in ${combinations}; do
     dirout=`echo ${combo} | sed -e 's/=/-/g'`
   fi
   # Remove the leading and trailing slashes.
-  dirout=`echo ${dirout} | sed -e 's|^/||' -e 's|/$||g'`
+  dirout=`echo ${dirout} | sed -e 's|^/||' -e 's|/*:/*|:|' -e 's|/$||g'`
 
   # Use the OS directory names rather than the option names.
   if [ -n "${toosdirnames}" ]; then
     osdirout=`echo ${combo} | sed ${toosdirnames}`
     # Remove the leading and trailing slashes.
-    osdirout=`echo ${osdirout} | sed -e 's|^/||' -e 's|/$||g'`
+    osdirout=`echo ${osdirout} | sed -e 's|^/||' -e 's|/*:/*|:|' -e 's|/$||g'`
     if [ "x${enable_multilib}" != xyes ]; then
       dirout=".:${osdirout}"
       disable_multilib=yes