1 files changed, 22 insertions, 0 deletions

diff --git a/tools/build/make_libc_exterr_cat_filenames.sh b/tools/build/make_libc_exterr_cat_filenames.sh
new file mode 100755
index 000000000000..fbde85891200
--- /dev/null
+++ b/tools/build/make_libc_exterr_cat_filenames.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+set -e
+
+check="lib/libc/gen/uexterr_format.c"
+target="lib/libc/gen/exterr_cat_filenames.h"
+
+if [ \! -f "${check}" ] ; then
+    echo "Script must be run from the top of the full source tree"
+    exit 1
+fi
+
+echo "/*" >"${target}"
+printf " * Automatically %sgenerated, use\\n" \@ >>"${target}"
+echo " * tools/build/make_libc_exterr_cat_filenames.sh" >>"${target}"
+echo " */" >>"${target}"
+
+(find sys -type f -name '*.c' | \
+    xargs grep -E '^#define[[:space:]]+EXTERR_CATEGORY[[:space:]]+EXTERR_CAT_' | \
+    sed -E 's/[[:space:]]+/:/g' | \
+    awk -F ':' '{filename = $1; sub(/^sys\//, "", filename);
+        printf("\t[%s] = \"%s\",\n", $4, filename)}') \
+    >>"${target}"