source: kBuild/vendor/gnumake/current/tests/scripts/features/jobserver

#                                                                    -*-perl-*-

$description = "Test jobserver.";

$details = "These tests are ones that specifically are different when the
jobserver feature is available.  Most -j tests are the same whether or not
jobserver is available, and those appear in the 'parallelism' test suite.";

exists $FEATURES{'jobserver'} or return -1;

if (!$parallel_jobs) {
  return -1;
}

# Shorthand
my $np = '--no-print-directory';

# Simple test of MAKEFLAGS settings
run_make_test(q!
SHOW = $(patsubst --jobserver-auth=%,--jobserver-auth=<auth>,$(MAKEFLAGS))
recurse: ; @echo $@: "/$(SHOW)/"; $(MAKE) -f #MAKEFILE# all
all:;@echo $@: "/$(SHOW)/"
!,
              "-j2 $np", "recurse: /-j2 --jobserver-auth=<auth> $np/\nall: /-j2 --jobserver-auth=<auth> $np/\n");

# Setting parallelism with the environment
# Command line should take precedence over the environment
$extraENV{MAKEFLAGS} = "-j2 $np";
run_make_test(q!
SHOW = $(patsubst --jobserver-auth=%,--jobserver-auth=<auth>,$(MAKEFLAGS))
recurse: ; @echo $@: "/$(SHOW)/"; $(MAKE) -f #MAKEFILE# all
all:;@echo $@: "/$(SHOW)/"
!,
              '', "recurse: /-j2 --jobserver-auth=<auth> $np/\nall: /-j2 --jobserver-auth=<auth> $np/\n");
delete $extraENV{MAKEFLAGS};

# Test override of -jN
$extraENV{MAKEFLAGS} = "-j9 $np";
run_make_test(q!
SHOW = $(patsubst --jobserver-auth=%,--jobserver-auth=<auth>,$(MAKEFLAGS))
recurse: ; @echo $@: "/$(SHOW)/"; $(MAKE) -j3 -f #MAKEFILE# recurse2
recurse2: ; @echo $@: "/$(SHOW)/"; $(MAKE) -f #MAKEFILE# all
all:;@echo $@: "/$(SHOW)/"
!,
              "-j2 $np", "recurse: /-j2 --jobserver-auth=<auth> $np/\n#MAKE#[1]: warning: -jN forced in submake: disabling jobserver mode.\nrecurse2: /-j3 --jobserver-auth=<auth> $np/\nall: /-j3 --jobserver-auth=<auth> $np/\n");
delete $extraENV{MAKEFLAGS};

# Test override of -jN with -j
run_make_test(q!
SHOW = $(patsubst --jobserver-auth=%,--jobserver-auth=<auth>,$(MAKEFLAGS))
recurse: ; @echo $@: "/$(SHOW)/"; $(MAKE) -j -f #MAKEFILE# recurse2
recurse2: ; @echo $@: "/$(SHOW)/"; $(MAKE) -f #MAKEFILE# all
all:;@echo $@: "/$(SHOW)/"
!,
              "-j2 $np", "recurse: /-j2 --jobserver-auth=<auth> $np/\n#MAKE#[1]: warning: -jN forced in submake: disabling jobserver mode.\nrecurse2: /-j $np/\nall: /-j $np/\n");

# Don't put --jobserver-auth into a re-exec'd MAKEFLAGS.
# We can't test this directly because there's no way a makefile can
# show the value of MAKEFLAGS we were re-exec'd with.  We can intuit it
# by looking for "disabling jobserver mode" warnings; we should only
# get one from the original invocation and none from the re-exec.
# See Savannah bug #18124

unlink('inc.mk');

run_make_test(q!
-include inc.mk
recur:
#       @echo 'MAKEFLAGS = $(MAKEFLAGS)'
        @rm -f inc.mk
        @$(MAKE) -j2 -f #MAKEFILE# all
all:
#       @echo 'MAKEFLAGS = $(MAKEFLAGS)'
        @echo $@
inc.mk:
#       @echo 'MAKEFLAGS = $(MAKEFLAGS)'
        @echo 'FOO = bar' > $@
!,
              "$np -j2", "#MAKE#[1]: warning: -jN forced in submake: disabling jobserver mode.\nall\n");

unlink('inc.mk');

# Test recursion when make doesn't think it exists.
# See Savannah bug #39934
# Or Red Hat bug https://bugzilla.redhat.com/show_bug.cgi?id=885474

open(MAKEFILE,"> Makefile2");
print MAKEFILE '
vpath %.c ../
foo:
';
close(MAKEFILE);

run_make_test(q!
default: ; @ #MAKEPATH# -f Makefile2
!,
              "-j2 $np",
"#MAKE#[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.
#MAKE#[1]: Nothing to be done for 'foo'.");

rmfiles('Makefile2');

1;

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