2004-05-13 Benjamin Kosnik <bkoz@redhat.com>

[pf3gnuchains/gcc-fork.git] / gcc / mkconfig.sh

diff --git a/gcc/mkconfig.sh b/gcc/mkconfig.sh
index 64d118f..70d9a23 100644 (file)
--- a/gcc/mkconfig.sh
+++ b/gcc/mkconfig.sh
@@ -33,6 +33,14 @@ fi
 output=$1
 rm -f ${output}T
 
+# This converts a file name into header guard macro format.
+hg_sed_expr='y,abcdefghijklmnopqrstuvwxyz./,ABCDEFGHIJKLMNOPQRSTUVWXYZ__,'
+header_guard=GCC_`echo ${output} | sed -e ${hg_sed_expr}`
+
+# Add multiple inclusion protection guard, part one.
+echo "#ifndef ${header_guard}" >> ${output}T
+echo "#define ${header_guard}" >> ${output}T
+
 # Define TARGET_CPU_DEFAULT if the system wants one.
 # This substitutes for lots of *.h files.
 if [ "$TARGET_CPU_DEFAULT" != "" ]; then
@@ -85,6 +93,9 @@ EOF
     ;;
 esac
 
+# Add multiple inclusion protection guard, part two.
+echo "#endif /* ${header_guard} */" >> ${output}T
+
 # Avoid changing the actual file if possible.
 if [ -f $output ] && cmp ${output}T $output >/dev/null 2>&1; then
     echo $output is unchanged >&2