# -*-perl-*- $description = "Test proper handling of SHELL."; # Find the default value when SHELL is not set. On UNIX it will be /bin/sh, # but on other platforms who knows? $oshell = $ENV{SHELL}; delete $ENV{SHELL}; $mshell = `echo 'all:;\@echo \$(SHELL)' | $make_name -f-`; chop $mshell; # According to POSIX, the value of SHELL in the environment has no impact on # the value in the makefile. $ENV{SHELL} = '/dev/null'; run_make_test('all:;@echo "$(SHELL)"', '', $mshell); # According to POSIX, any value of SHELL set in the makefile should _NOT_ be # exported to the subshell! I wanted to set SHELL to be $^X (perl) in the # makefile, but make runs $(SHELL) -c 'commandline' and that doesn't work at # all when $(SHELL) is perl :-/. So, we just add an extra initial / and hope # for the best on non-UNIX platforms :-/. $ENV{SHELL} = $mshell; run_make_test("SHELL := /$mshell\n".' all:;@echo "$(SHELL) $$SHELL" ', '', "/$mshell $mshell"); # As a GNU make extension, if make's SHELL variable is explicitly exported, # then we really _DO_ export it. run_make_test("export SHELL := /$mshell\n".' all:;@echo "$(SHELL) $$SHELL" ', '', "/$mshell /$mshell"); # Test out setting of SHELL, both exported and not, as a target-specific # variable. run_make_test("all: SHELL := /$mshell\n".' all:;@echo "$(SHELL) $$SHELL" ', '', "/$mshell $mshell"); run_make_test("all: export SHELL := /$mshell\n".' all:;@echo "$(SHELL) $$SHELL" ', '', "/$mshell $mshell"); 1;