1 files changed, 10 insertions, 0 deletions
diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index 7efaf3e89e6a..87e97c20fa3d 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -9,6 +9,7 @@
 #include <cstdlib>
 #include <sstream>
 #include <cstring>
+#include <cctype>
 
 #include <sys/wait.h>
 #include <unistd.h>
@@ -1087,6 +1088,15 @@ bool hasSuffix(const string & s, const string & suffix)
 }
 
 
+std::string toLower(const std::string & s)
+{
+    std::string r(s);
+    for (auto & c : r)
+        c = std::tolower(c);
+    return r;
+}
+
+
 string decodeOctalEscaped(const string & s)
 {
     string r;