build: log time taken by each packages/steps
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>
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@ -138,6 +138,10 @@ $(eval $(call SetupHostCommand,bzip2,Please install 'bzip2', \
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$(eval $(call SetupHostCommand,wget,Please install GNU 'wget', \
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wget --version | grep GNU))
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$(eval $(call SetupHostCommand,gtime,Please install GNU 'time', \
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gtime --version 2>&1 | grep GNU, \
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time --version 2>&1 | grep GNU))
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$(eval $(call SetupHostCommand,perl,Please install Perl 5.x, \
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perl --version | grep "perl.*v5"))
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@ -43,6 +43,7 @@ log_make = \
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$(if $(BUILD_LOG), \
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set -o pipefail; \
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mkdir -p $(BUILD_LOG_DIR)/$(1)$(if $(4),/$(4));) \
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gtime -f "time: $(1)$(if $(4),/$(4))/$(if $(3),$(3)-)$(2)\#%U\#%S\#%e" -- \
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$$(SUBMAKE) $(subdir_make_opts) $(if $(3),$(3)-)$(2) \
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$(if $(BUILD_LOG),SILENT= 2>&1 | tee $(BUILD_LOG_DIR)/$(1)$(if $(4),/$(4))/$(if $(3),$(3)-)$(2).txt)
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