1 files changed, 27 insertions, 0 deletions
diff --git a/cc/util.go b/cc/util.go
index 1e4a0c0ca..8de421032 100644
--- a/cc/util.go
+++ b/cc/util.go
@@ -16,6 +16,7 @@ package cc
 
 import (
 	"fmt"
+	"path/filepath"
 	"regexp"
 	"strings"
 
@@ -102,3 +103,29 @@ func addSuffix(list []string, suffix string) []string {
 	}
 	return list
 }
+
+var shlibVersionPattern = regexp.MustCompile("(?:\\.\\d+)+")
+
+// splitFileExt splits a file name into root, suffix and ext. root stands for the file name without
+// the file extension and the version number (e.g. "libexample"). suffix stands for the
+// concatenation of the file extension and the version number (e.g. ".so.1.0"). ext stands for the
+// file extension after the version numbers are trimmed (e.g. ".so").
+func splitFileExt(name string) (string, string, string) {
+	// Extract and trim the shared lib version number if the file name ends with dot digits.
+	suffix := ""
+	matches := shlibVersionPattern.FindAllStringIndex(name, -1)
+	if len(matches) > 0 {
+		lastMatch := matches[len(matches)-1]
+		if lastMatch[1] == len(name) {
+			suffix = name[lastMatch[0]:lastMatch[1]]
+			name = name[0:lastMatch[0]]
+		}
+	}
+
+	// Extract the file name root and the file extension.
+	ext := filepath.Ext(name)
+	root := strings.TrimSuffix(name, ext)
+	suffix = ext + suffix
+
+	return root, suffix, ext
+}