1#                                                                    -*-perl-*-
2
3$description = "Test proper handling of SHELL.";
4
5# Find the default value when SHELL is not set.  On UNIX it will be /bin/sh,
6# but on other platforms who knows?
7resetENV();
8delete $ENV{SHELL};
9$mshell = `echo 'all:;\@echo \$(SHELL)' | $make_path -f-`;
10chop $mshell;
11
12# According to POSIX, the value of SHELL in the environment has no impact on
13# the value in the makefile.
14# Note %extraENV takes precedence over the default value for the shell.
15
16$extraENV{SHELL} = '/dev/null';
17run_make_test('all:;@echo "$(SHELL)"', '', $mshell);
18
19# According to POSIX, any value of SHELL set in the makefile should _NOT_ be
20# exported to the subshell!  I wanted to set SHELL to be $^X (perl) in the
21# makefile, but make runs $(SHELL) -c 'commandline' and that doesn't work at
22# all when $(SHELL) is perl :-/.  So, we just add an extra initial /./ which
23# works well on UNIX and seems to work OK on at least some non-UNIX systems.
24
25$extraENV{SHELL} = $mshell;
26
27run_make_test("SHELL := /./$mshell\n".'
28all:;@echo "$(SHELL) $$SHELL"
29', '', "/./$mshell $mshell");
30
31# As a GNU make extension, if make's SHELL variable is explicitly exported,
32# then we really _DO_ export it.
33
34$extraENV{SHELL} = $mshell;
35
36run_make_test("export SHELL := /./$mshell\n".'
37all:;@echo "$(SHELL) $$SHELL"
38', '', "/./$mshell /./$mshell");
39
40
41# Test out setting of SHELL, both exported and not, as a target-specific
42# variable.
43
44$extraENV{SHELL} = $mshell;
45
46run_make_test("all: SHELL := /./$mshell\n".'
47all:;@echo "$(SHELL) $$SHELL"
48', '', "/./$mshell $mshell");
49
50$extraENV{SHELL} = $mshell;
51
52run_make_test("all: export SHELL := /./$mshell\n".'
53all:;@echo "$(SHELL) $$SHELL"
54', '', "/./$mshell $mshell");
55
561;
57