tools: fix up warnings with -Wwrite-strings.

[ccan] / tools / ccanlint / ccanlint.h

diff --git a/tools/ccanlint/ccanlint.h b/tools/ccanlint/ccanlint.h
index 0c73716a714cfeafe80b0337490802dd610d73cc..33db1257eb126bbf9f59299175af05f13c5edaf6 100644 (file)
--- a/tools/ccanlint/ccanlint.h
+++ b/tools/ccanlint/ccanlint.h
@@ -222,7 +222,7 @@ extern bool safe_mode;
 extern const char *ccan_dir;
 
 /* Compiler and CFLAGS, from config.h if available. */
-extern char *compiler, *cflags;
+extern const char *compiler, *cflags;
 
 /* Contents of config.h (or NULL if not found) */
 extern const char *config_header;