[Buildroot] [PATCH v3] Config.in: add -Og option
Martin Kelly
martin at surround.io
Wed May 18 21:17:55 UTC 2016
-Og (introduced in GCC 4.8) lets you optimize for debugging experience,
which can be useful for when you want optimized code that is nonetheless
debuggable.
Signed-off-by: Martin Kelly <martin at surround.io>
---
Changes since v2:
- BR2_OPTIMIZE_g renamed to BR2_OPTIMIZE_G
---
Config.in | 10 ++++++++++
package/Makefile.in | 3 +++
2 files changed, 13 insertions(+)
diff --git a/Config.in b/Config.in
index 9bc8e51..16ebce2 100644
--- a/Config.in
+++ b/Config.in
@@ -510,6 +510,16 @@ config BR2_OPTIMIZE_3
and also turns on the -finline-functions, -funswitch-loops and
-fgcse-after-reload options.
+config BR2_OPTIMIZE_G
+ bool "optimize for debugging"
+ depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+ help
+ Optimize for debugging. This enables optimizations that do not
+ interfere with debugging. It should be the optimization level of
+ choice for the standard edit-compile-debug cycle, offering a
+ reasonable level of optimization while maintaining fast compilation
+ and a good debugging experience.
+
config BR2_OPTIMIZE_S
bool "optimize for size"
help
diff --git a/package/Makefile.in b/package/Makefile.in
index 616bdd0..2d454a6 100644
--- a/package/Makefile.in
+++ b/package/Makefile.in
@@ -122,6 +122,9 @@ endif
ifeq ($(BR2_OPTIMIZE_3),y)
TARGET_OPTIMIZATION = -O3
endif
+ifeq ($(BR2_OPTIMIZE_G),y)
+TARGET_OPTIMIZATION = -Og
+endif
ifeq ($(BR2_OPTIMIZE_S),y)
TARGET_OPTIMIZATION = -Os
endif
--
2.1.4
More information about the buildroot
mailing list