[Buildroot] [PATCH 2/2] pkg-infra: make timing of steps optional

Danomi Manchego danomimanchego123 at gmail.com
Sat Sep 13 03:14:03 UTC 2014

Commit 17d4eb1e0261793a9f89e4a2253602c7ab926d2e added a hook to log timing
of steps to a build-time.log file, which provides data for the "graph-build"
target for examining build time stats.  If one uses buildroot on a daily
basis as part of a build system, then its conceivable that there might be
long periods of time between "make clean" ops.  So the log file continues
to grow.  This patch makes the accumulation of the timing data optional, to
avoid having a silent endlessly growing log in the build directory.

Signed-off-by: Danomi Manchego <danomimanchego123 at gmail.com>
 Config.in              | 6 ++++++
 package/pkg-generic.mk | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/Config.in b/Config.in
index 14ff55b..78ee165 100644
--- a/Config.in
+++ b/Config.in
@@ -574,6 +574,12 @@ config BR2_GLOBAL_PATCH_DIR
 	  Otherwise, if the directory <global-patch-dir>/<packagename> exists,
 	  then all *.patch files in the directory will be applied.
+	bool "Gather build time statistics"
+	help
+	  Record the start and end time of each step in the build process, so
+	  that buildroot can generate graphs of the build times.
 source "toolchain/Config.in"
diff --git a/package/pkg-generic.mk b/package/pkg-generic.mk
index 4b6d818..5f0256e 100644
--- a/package/pkg-generic.mk
+++ b/package/pkg-generic.mk
@@ -48,12 +48,14 @@ endef
 # Actual steps hooks
 # Time steps
 define step_time
 	printf "%s:%-5.5s:%-20.20s: %s\n"           \
 	       "$$(date +%s)" "$(1)" "$(2)" "$(3)"  \
 # User-supplied script

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