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build: log time taken by each packages/steps

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The idea is to easily get the list of packages taking the most time to build,
and see if we can improve them

v1: Use SetupHostCommand as recommended by John
v2: add space after 'time:', remove useless /usr/bin/time from SetupHostCommand

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
This commit is contained in:
Etienne Champetier
2018-04-30 12:55:12 -07:00
committed by John Crispin
parent f87dff8f72
commit ff6e62b288
2 changed files with 5 additions and 0 deletions
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1
include/subdir.mk
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@@ -43,6 +43,7 @@ log_make = \
$(if $(BUILD_LOG), \
set -o pipefail; \
mkdir -p $(BUILD_LOG_DIR)/$(1)$(if $(4),/$(4));) \
gtime -f "time: $(1)$(if $(4),/$(4))/$(if $(3),$(3)-)$(2)\#%U\#%S\#%e" -- \
$$(SUBMAKE) $(subdir_make_opts) $(if $(3),$(3)-)$(2) \
$(if $(BUILD_LOG),SILENT= 2>&1 | tee $(BUILD_LOG_DIR)/$(1)$(if $(4),/$(4))/$(if $(3),$(3)-)$(2).txt)