thodg/libgit2

diff --git a/src/cc-compat.h b/src/cc-compat.h
index cce4ca9..78dfba7 100644
--- a/src/cc-compat.h
+++ b/src/cc-compat.h
@@ -65,6 +65,13 @@
 # define PRIuZ "zu"
 #endif
 
+/* Define the printf format for 64 bit types */
+#if defined(__MINGW32__)
+#	define PRIdMAX "I64d"
+#else
+#	define PRIdMAX "lld"
+#endif
+
 /* Micosoft Visual C/C++ */
 #if defined(_MSC_VER)
 /* disable "deprecated function" warnings */
diff --git a/src/config.c b/src/config.c
index 2b3e535..852c2e1 100644
--- a/src/config.c
+++ b/src/config.c
@@ -167,7 +167,7 @@ int git_config_delete(git_config *cfg, const char *name)
 int git_config_set_long(git_config *cfg, const char *name, long long value)
 {
 	char str_value[32]; /* All numbers should fit in here */
-	p_snprintf(str_value, sizeof(str_value), "%lld", value);
+	p_snprintf(str_value, sizeof(str_value), "%" PRIdMAX, value);
 	return git_config_set_string(cfg, name, str_value);
 }