#                                                                    -*-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;
}

# Don't put --jobserver-fds 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

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' > $@
!,
              '--no-print-directory -j2', "#MAKE#[1]: warning: -jN forced in submake: disabling jobserver mode.\nall\n");

rmfiles('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 <<EOF;
vpath %.c $ENV{HOME}/
foo:
EOF
close(MAKEFILE);

run_make_test(q!
default: ; @ #MAKEPATH# -f Makefile2
!,
              '-j2 --no-print-directory',
"#MAKE#[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.
#MAKE#[1]: Nothing to be done for 'foo'.");

unlink('Makefile2');

1;