So, just for curiosity, I decided to try llvm-clang to build openocd.
I haven't actually run the build yet, but it's just over half the
size of the gcc build, and compiled just a touch faster, too. Any
comments? The time output is from "make -j3" calls.
openocd-via-gcc:
real 0m25.669s
user 0m35.514s
sys 0m3.356s
3308583b 3232k
openocd-via-clang:
real 0m22.014s
user 0m29.186s
sys 0m3.260s
1742244b 1702k
Building with clang did take a few very small changes - The change to
helper/log.h is because clang doesn't like an expression where the
result is unused. In helper/system.h, I just defined true and false
since clang doesn't have them builtin.
>From 9d5082c0c7825a6492714d9363cf9a9d570a20d3 Mon Sep 17 00:00:00 2001
From: Alex Austin <alex.aus...@spectrumdsi.com>
Date: Fri, 29 Jan 2010 00:41:44 -0600
Subject: [PATCH] Clang support
---
src/helper/log.h | 2 +-
src/helper/system.h | 5 +++++
2 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/src/helper/log.h b/src/helper/log.h
index ebcb8a1..b887e0c 100644
--- a/src/helper/log.h
+++ b/src/helper/log.h
@@ -111,7 +111,7 @@ extern int debug_level;
#define LOG_LEVEL_IS(FOO) ((debug_level) >= (FOO))
#define LOG_DEBUG(expr ...) \
- ((debug_level >= LOG_LVL_DEBUG) ? log_printf_lf (LOG_LVL_DEBUG,
__FILE__, __LINE__, __FUNCTION__, expr) , 0 : 0)
+ do {if (debug_level >= LOG_LVL_DEBUG) log_printf_lf
(LOG_LVL_DEBUG, __FILE__, __LINE__, __FUNCTION__, expr);} while (0)
#define LOG_INFO(expr ...) \
log_printf_lf (LOG_LVL_INFO, __FILE__, __LINE__, __FUNCTION__,
expr)
diff --git a/src/helper/system.h b/src/helper/system.h
index 169df1c..77a867a 100644
--- a/src/helper/system.h
+++ b/src/helper/system.h
@@ -83,4 +83,9 @@
#include <fcntl.h>
#endif
+#ifndef true
+#define true -1
+#define false 0
+#endif
+
#endif // SYSTEM_H
--
1.6.6
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