i386: Align branches within a fixed boundary

[deliverable/binutils-gdb.git] / config / acx.m4

diff --git a/config/acx.m4 b/config/acx.m4
index 9ff31eb85f3d4375a784d266953cfeaf8808f413..87c1b5e29322142b35e791d1e3ad4495ecf6ef53 100644 (file)
--- a/config/acx.m4
+++ b/config/acx.m4
@@ -235,8 +235,28 @@ fi
 ])
 
 
+dnl ####
+dnl # GCC_BASE_VER
+dnl # Determine GCC version number to use in compiler directories.
+
+AC_DEFUN([GCC_BASE_VER],
+[
+  get_gcc_base_ver="cat"
+  AC_ARG_WITH(gcc-major-version-only,
+  [AS_HELP_STRING([--with-gcc-major-version-only], [use only GCC major number in filesystem paths])],
+  [if test x$with_gcc_major_version_only = xyes ; then
+    changequote(,)dnl
+    get_gcc_base_ver="sed -e 's/^\([0-9]*\).*/\1/'"
+    changequote([,])dnl
+  fi
+  ])
+  AC_SUBST(get_gcc_base_ver)
+])
+
+
 AC_DEFUN([ACX_TOOL_DIRS], [
 AC_REQUIRE([ACX_PATH_SEP])
+AC_REQUIRE([GCC_BASE_VER])
 if test "x$exec_prefix" = xNONE; then
         if test "x$prefix" = xNONE; then
                 gcc_cv_tool_prefix=$ac_default_prefix
@@ -251,7 +271,13 @@ fi
 # case, if there is no compiler in the tree nobody should use
 # AS_FOR_TARGET and LD_FOR_TARGET.
 if test x$host = x$build && test -f $srcdir/gcc/BASE-VER; then
-    gcc_version=`cat $srcdir/gcc/BASE-VER`
+    if test x$with_gcc_major_version_only = xyes ; then
+        changequote(,)dnl
+        gcc_version=`sed -e 's/^\([0-9]*\).*$/\1/' $srcdir/gcc/BASE-VER`
+        changequote([,])dnl
+    else
+        gcc_version=`cat $srcdir/gcc/BASE-VER`
+    fi
     gcc_cv_tool_dirs="$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
     gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical$PATH_SEPARATOR"
     gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
@@ -404,7 +430,7 @@ AC_DEFUN([ACX_PROG_CMP_IGNORE_INITIAL],
 [AC_CACHE_CHECK([how to compare bootstrapped objects], gcc_cv_prog_cmp_skip,
 [ echo abfoo >t1
   echo cdfoo >t2
-  gcc_cv_prog_cmp_skip='tail +16c $$f1 > tmp-foo1; tail +16c $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2'
+  gcc_cv_prog_cmp_skip='tail -c +17 $$f1 > tmp-foo1; tail -c +17 $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2'
   if cmp t1 t2 2 2 > /dev/null 2>&1; then
     if cmp t1 t2 1 1 > /dev/null 2>&1; then
       :