From 1fa9f0c8130177578020cdb89b9c93792f42400e Mon Sep 17 00:00:00 2001
From: Cristian Adam <cristian.adam@gmail.com>
Date: Wed, 28 Aug 2019 19:07:21 +0200
Subject: [PATCH] Win32: make_relative_path also accept /c/users (#455)

Patch copied from jd-gascuel@f3b85c9
---
 src/ccache.cpp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/ccache.cpp b/src/ccache.cpp
index 264335319..8568d405a 100644
--- a/src/ccache.cpp
+++ b/src/ccache.cpp
@@ -772,7 +772,15 @@ make_relative_path(char* path)
 
 #ifdef _WIN32
   if (path[0] == '/') {
-    path++; // Skip leading slash.
+    char *p = NULL;
+    if (isalpha(path[1]) && path[2] == '/') {
+      // Transform /c/path... to c:/path...
+      p = format("%c:/%s", path[1], &path[3]);
+    } else {
+      p = x_strdup(path+1); // Skip leading slash.
+    }
+    free(path);
+    path = p;
   }
 #endif
 
-- 
2.47.2