X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fmkconfig.sh;h=70d9a23d92d11354e6aa37c6801e3a09c234b500;hb=ac4ededf628466d520f6b6edbf15f14d2c1fe776;hp=64d118f1a99c9e1cbf317b442535346fbecda0b4;hpb=805e22b2051e9c6a75377ea6599654d7415da483;p=pf3gnuchains%2Fgcc-fork.git

diff --git a/gcc/mkconfig.sh b/gcc/mkconfig.sh
index 64d118f1a99..70d9a23d92d 100644
--- 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