From 48a793425564864709adb3f51c7d503a865610c5 Mon Sep 17 00:00:00 2001
From: Zack Weinberg <zack@codesourcery.com>
Date: Mon, 7 Apr 2003 05:34:50 +0000
Subject: [PATCH] mklibgcc.in: Use a here document to avoid running afoul of
 shells that generate control-A...

* mklibgcc.in: Use a here document to avoid running afoul of
shells that generate control-A from "echo \1".

From-SVN: r65321
---
 gcc/ChangeLog   |  5 +++++
 gcc/mklibgcc.in | 21 ++++++++++++++-------
 2 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ca209182bc0..0b7d3295119 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2003-04-06  Zack Weinberg  <zack@codesourcery.com>
+
+	* mklibgcc.in: Use a here document to avoid running afoul of
+	shells that generate control-A from "echo \1".
+
 2003-04-06  Aldy Hernandez  <aldyh@redhat.com>
 
         * doc/invoke.texi (RS/6000 and PowerPC Options): Document -mspe
diff --git a/gcc/mklibgcc.in b/gcc/mklibgcc.in
index 3a492da13b1..1abb3a05e5e 100644
--- a/gcc/mklibgcc.in
+++ b/gcc/mklibgcc.in
@@ -311,13 +311,20 @@ for ml in $MULTILIBS; do
   if [ "$SHLIB_LINK" -a "$SHLIB_MKMAP" ]; then
     mapfile="libgcc/${dir}/libgcc.map"
     tmpmapfile="libgcc/${dir}/tmp-libgcc.map"
-    echo ""
-    echo "${mapfile}: $SHLIB_MKMAP $SHLIB_MAPFILES $libgcc_sh_objs"
-    echo '	{ $(NM_FOR_TARGET)'" $SHLIB_NM_FLAGS $libgcc_sh_objs; echo %%; \\"
-    echo "	  cat $SHLIB_MAPFILES | sed -e "'"/^[ 	]*#/d" -e '\''s/^%\(if\|else\|elif\|endif\|define\)/#\1/'\'" \\"
-    echo "	  | $gcc_compile $flags -E -xassembler-with-cpp -; \\"
-    echo '	} | $(AWK)'" -f $SHLIB_MKMAP $SHLIB_MKMAP_OPTS > ${tmpmapfile}"
-    echo '	mv '"$tmpmapfile"' $@'
+    # This uses a here document instead of echos because some shells
+    # will convert the \1 in the second sed command to a control-A.
+    # The behavior of here documents is more predictable.
+    cat <<EOF
+
+${mapfile}: $SHLIB_MKMAP $SHLIB_MAPFILES $libgcc_sh_objs
+	{ \$(NM_FOR_TARGET) $SHLIB_NM_FLAGS $libgcc_sh_objs; echo %%; \\
+	  cat $SHLIB_MAPFILES \\
+	    | sed -e '/^[   ]*#/d' \\
+	          -e 's/^%\(if\|else\|elif\|endif\|define\)/#\1/' \\
+	    | $gcc_compile $flags -E -xassembler-with-cpp -; \\
+	} | \$(AWK) -f $SHLIB_MKMAP $SHLIB_MKMAP_OPTS > ${tmpmapfile}
+	mv '$tmpmapfile' \$@
+EOF
   fi
   shlib_deps="$shlib_deps $mapfile"