make/tests/scripts/features/reinvoke
Paul Smith 7c4e6b0299 [SV 60595] Restart whenever any makefile is rebuilt
Previously if an included makefile was rebuilt as a prerequisite of
another included makefile which didn't need to be rebuilt, make would
not realize that it needed to re-exec itself.

Ensure that if any included makefile target is rebuilt we re-exec.
Also ensure that if an included makefile is not readable, and our rule
for rebuilding it doesn't actually change it, we will still fail.

* src/remake.c (update_goal_chain): If a goal's update was successful
then check its status, even if no actual commands were run because it
was already up to date.
(show_goal_error): Remove superfluous cast.
* src/main.c (main): If the makefile remake did nothing, check that we
were able to successfully include all the makefiles we care about; if
not fail.  When generating error messages about included makefiles be
sure to show the filename/linenumber information.
* test/scripts/features/reinvoke: Add tests for this behavior.
* test/scripts/options/dash-k: Update error messages.
2021-09-03 12:08:11 -04:00

108 lines
2.5 KiB
Perl

# -*-mode: perl-*-
$description = "Test GNU make's auto-reinvocation feature.";
$details = "\
If the makefile or one it includes can be rebuilt then it is, and make
is reinvoked. We create a rule to rebuild the makefile from a temp
file, then touch the temp file to make it newer than the makefile.";
$omkfile = $makefile;
&utouch(-600, 'incl.mk');
# For some reason if we don't do this then the test fails for systems
# with sub-second timestamps, maybe + NFS? Not sure.
&utouch(-1, 'incl-1.mk');
run_make_test('
all: ; @echo running rules.
#MAKEFILE# incl.mk: incl-1.mk ; @echo rebuilding $@; echo >> $@
include incl.mk',
'', "rebuilding incl.mk\nrunning rules.\n");
# Make sure updating the makefile itself also works
&utouch(-600, $omkfile);
run_make_test(undef, '', "rebuilding #MAKEFILE#\nrunning rules.\n");
&rmfiles('incl.mk', 'incl-1.mk');
# In this test we create an included file that's out-of-date, but then
# the rule doesn't update it. Make shouldn't re-exec.
&utouch(-600, 'b','a');
#&utouch(-10, 'a');
&touch('c');
run_make_test('
all: ; @echo hello
a : b ; echo >> $@
b : c ; test -f $@ || echo >> $@
c: ; echo >> $@
include $(F)',
'F=a', "test -f b || echo >> b\nhello\n");
# Now try with the file we're not updating being the actual file we're
# including: this and the previous one test different parts of the code.
run_make_test(undef, 'F=b', "test -f b || echo >> b\nhello\n");
&rmfiles('a','b','c');
# Ensure command line variables are preserved properly across re-exec
# Tests for Savannah bug #30723
run_make_test('
ifdef RECURSE
-include foo30723
endif
recurse: ; @$(MAKE) -f $(MAKEFILE_LIST) RECURSE=1 test
test: ; @echo F.O=$(F.O)
foo30723: ; @touch $@
',
'--no-print-directory F.O=bar', "F.O=bar\n");
unlink('foo30723');
# If ANY makefile is rebuilt then we should re-exec
run_make_test('
all: ; @echo RESTARTS=$(MAKE_RESTARTS)
m1.d: ; @echo $@; touch $@
m2.d: m1.d ; @test -f $< || { echo $@; touch $@; }
include m1.d
-include m2.d
',
'', "m1.d\nRESTARTS=1\n");
unlink('m1.d', 'm2.d');
# Same as before but be sure we get error messages for un-created makefiles
run_make_test('
all: ; @echo RESTARTS=$(MAKE_RESTARTS)
m1.d: ; @echo $@; touch $@
m2.d: m1.d ; @test -f $< || { echo $@; touch $@; }
include m1.d m2.d
',
'', "m1.d\n#MAKEFILE#:8: m2.d: $ERR_no_such_file\n", 512);
unlink('m1.d', 'm2.d');
# This tells the test driver that the perl test script executed properly.
1;