Solaris /bin/sh can't handle multiple options ("-e -c").

tests/ChangeLog

@@ -1,5 +1,9 @@
 2013-09-29  Paul Smith  <psmith@gnu.org>
 
+	* scripts/variables/SHELL: Solaris /bin/sh can't handle options in
+	multiple words; skip that test.
+	* scripts/targets/ONESHELL: Ditto.
+
 	* scripts/variables/GNUMAKEFLAGS: Verify that GNUMAKEFLAGS is
 	cleared and options are not duplicated.
 

tests/scripts/targets/ONESHELL

@@ -4,6 +4,10 @@ $description = "Test the behaviour of the .ONESHELL target.";
 
 $details = "";
 
+# Some shells (*shakes fist at Solaris*) cannot handle multiple flags in
+# separate arguments.
+my $t = `/bin/sh -e -c true 2>/dev/null`;
+my $multi_ok = $? == 0;
 
 # Simple
 
@@ -19,7 +23,8 @@ all:
 
 # Simple but use multi-word SHELLFLAGS
 
-run_make_test(q!
+if ($multi_ok) {
+    run_make_test(q!
 .ONESHELL:
 .SHELLFLAGS = -e -c
 all:
@@ -29,6 +34,7 @@ all:
               '', 'a=$$
 [ 0"$a" -eq "$$" ] || echo fail
 ');
+}
 
 # Again, but this time with inner prefix chars
 

tests/scripts/variables/SHELL

@@ -71,12 +71,20 @@ all: ; \@$script
               '', $out);
 
 # Do it again but add spaces to SHELLFLAGS
-$flags = '-x -c';
-run_make_test(qq!
+
+# Some shells (*shakes fist at Solaris*) cannot handle multiple flags in
+# separate arguments.
+my $t = `/bin/sh -e -c true 2>/dev/null`;
+my $multi_ok = $? == 0;
+
+if ($multi_ok) {
+    $flags = '-x -c';
+    run_make_test(qq!
 .SHELLFLAGS = $flags
 all: ; \@$script
 !,
               '', $out);
+}
 
 # We can't just use "false" because on different systems it provides a
 # different exit code--once again Solaris: false exits with 255 not 1