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? 7 resetENV(); 8 delete $ENV{SHELL}; 9 $mshell = `echo 'all:;\@echo \$(SHELL)' | $make_path -f-`; 10 chop $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 $extraENV{SHELL} = '/dev/null'; 17 run_make_test('all:;@echo "$(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} = $mshell; 26 27 run_make_test("SHELL := /./$mshell\n".' 28 all:;@echo "$(SHELL) $$SHELL" 29 ', '', "/./$mshell $mshell"); 30 31 # As a GNU make extension, if make's SHELL variable is explicitly exported, 32 # then we really _DO_ export it. 33 34 $extraENV{SHELL} = $mshell; 35 36 run_make_test("export SHELL := /./$mshell\n".' 37 all:;@echo "$(SHELL) $$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} = $mshell; 45 46 run_make_test("all: SHELL := /./$mshell\n".' 47 all:;@echo "$(SHELL) $$SHELL" 48 ', '', "/./$mshell $mshell"); 49 50 $extraENV{SHELL} = $mshell; 51 52 run_make_test("all: export SHELL := /./$mshell\n".' 53 all:;@echo "$(SHELL) $$SHELL" 54 ', '', "/./$mshell $mshell"); 55 56 1; 57
