Add command line option to set verbosity level

-v sets it to 1 (shows actual command lines)
--verbose sets it to any value in the 0-5 range

1 files changed, 4 insertions, 1 deletions

diff --git a/build/diagnostics b/build/diagnostics
index 68f449b..21e02e2 100644
--- a/build/diagnostics
+++ b/build/diagnostics
@@ -49,13 +49,16 @@ namespace build
 
   // Trace verbosity level.
   //
+  // 0 - tracing disabled.
   // 1 - command lines to update explicit targets (e.g., .o)
   // 2 - command lines to update implicit targets (e.g., .d)
   // 3 - things didn't work out (e.g., rule did not match)
   // 4 - additional information
   // 5 - more additional information
   //
-  extern std::uint8_t verb;
+  // While uint8 is more than enough, use uint16 for the ease of printing.
+  //
+  extern std::uint16_t verb;
 
   template <typename F> inline void level1 (const F& f) {if (verb >= 1) f ();}
   template <typename F> inline void level2 (const F& f) {if (verb >= 2) f ();}