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# -*-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.";
$makefile2 = &get_tmpfile;
$makefile_orig = &get_tmpfile;
open(MAKEFILE,"> $makefile");
print MAKEFILE <<EOM;
all: ; \@echo 'running rules.'
$makefile $makefile2: $makefile_orig
\@echo 'rebuilding \$\@.'
\@sleep $wtime
\@echo >> \$\@
include $makefile2
EOM
close(MAKEFILE);
&touch($makefile2);
# Sleep 2 seconds for DOS/Windows FAT volumes which have 2-second
# granularity of file times.
sleep($wtime);
&touch("$makefile_orig");
&run_make_with_options($makefile, "", &get_logfile, 0);
# Create the answer to what should be produced by this Makefile
$answer = "rebuilding $makefile2.\nrebuilding $makefile.\nrunning rules.\n";
&compare_output($answer,&get_logfile(1))
&& unlink "$makefile_orig";
# In this test we create an included file that's out-of-date, but then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.
$makefile3 = &get_tmpfile;
open(MAKEFILE, "> $makefile3");
print MAKEFILE <<'EOM';
SHELL = /bin/sh
all: ; @echo hello
a : b ; echo >> $@
b : c ; [ -f $@ ] || echo >> $@
c: ; echo >> $@
include $(F)
EOM
close(MAKEFILE);
&touch('b');
&touch('a');
sleep($wtime);
&touch('c');
# First try with the file that's not updated "once removed" from the
# file we're including.
&run_make_with_options($makefile3, "F=a", &get_logfile, 0);
$answer = "[ -f b ] || echo >> b\nhello\n";
&compare_output($answer,&get_logfile(1));
# 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_with_options($makefile3, "F=b", &get_logfile, 0);
$answer = "[ -f b ] || echo >> b\nhello\n";
&compare_output($answer,&get_logfile(1));
unlink('a','b','c');
# This tells the test driver that the perl test script executed properly.
1;
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