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build: remove GNU time dependency

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Replace the GNU time program invocation with a simple Perl script reporting
the timing values. Since we require Perl anyway for the build system, we can
as well use that instead of requiring a random GNU utility rarely installed
by default.

Fixes: ff6e62b288 ("build: log time taken by each packages/steps")
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This commit is contained in:
Jo-Philipp Wich 2018-08-05 00:06:27 +02:00
parent 6031ab345d
commit d3ddf6631e
3 changed files with 43 additions and 6 deletions
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5
include/prereq-build.mk
View file

@ -138,11 +138,6 @@ $(eval $(call SetupHostCommand,bzip2,Please install 'bzip2', \
$(eval $(call SetupHostCommand,wget,Please install GNU 'wget', \
wget --version | grep GNU))
$(eval $(call SetupHostCommand,time,Please install GNU 'time' or BusyBox 'time' that supports -f, \
gtime --version 2>&1 | grep GNU, \
time --version 2>&1 | grep GNU, \
busybox time 2>&1 | grep -- '-f FMT'))
$(eval $(call SetupHostCommand,perl,Please install Perl 5.x, \
perl --version | grep "perl.*v5"))

2
include/subdir.mk
View file

@ -43,7 +43,7 @@ log_make = \
$(if $(BUILD_LOG), \
set -o pipefail; \
mkdir -p $(BUILD_LOG_DIR)/$(1)$(if $(4),/$(4));) \
env time -f "time: $(1)$(if $(4),/$(4))/$(if $(3),$(3)-)$(2)\#%U\#%S\#%e" -- \
$(SCRIPT_DIR)/time.pl "time: $(1)$(if $(4),/$(4))/$(if $(3),$(3)-)$(2)" \
$$(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)

42
scripts/time.pl Executable file
View file

@ -0,0 +1,42 @@
#!/usr/bin/env perl
use strict;
use warnings;
use Time::HiRes qw(gettimeofday);
if (@ARGV < 2) {
die "Usage: $0 <prefix> <command...>\n";
}
my ($prefix, @cmd) = @ARGV;
my ($sec, $msec) = gettimeofday();
my $pid = fork();
if (!defined($pid)) {
die "$0: Failure to fork(): $!\n";
}
elsif ($pid == 0) {
exec(@cmd);
die "$0: Failure to exec(): $!\n";
}
else {
$SIG{'INT'} = 'IGNORE';
$SIG{'QUIT'} = 'IGNORE';
if (waitpid($pid, 0) == -1) {
die "$0: Failure to waitpid(): $!\n";
}
my $exitcode = $? >> 8;
my ($sec2, $msec2) = gettimeofday();
my (undef, undef, $cuser, $csystem) = times();
printf STDERR "%s#%.2f#%.2f#%.2f\n",
$prefix, $cuser, $csystem,
($sec2 - $sec) + ($msec2 - $msec) / 1000000;
$SIG{'INT'} = 'DEFAULT';
$SIG{'QUIT'} = 'DEFAULT';
exit $exitcode;
}