Fix strerror() handling for systems which set ANSI_STRING.

Don't print errors if "include" is specified with no arguments.
New test suite for the $(shell ...) function.

ChangeLog

@@ -1,5 +1,15 @@
+2005-06-26  Paul D. Smith  <psmith@gnu.org>
+
+	* make.h: Fix bug in ANSI_STRING/strerror() handling; only define
+	it if ANSI_STRING is not set.
+
 2005-06-25  Paul D. Smith  <psmith@gnu.org>
 
+	* read.c (eval): If no filenames are passed to any of the
+	"include" variants, don't print an error.
+	* doc/make.texi (Include): Document this.
+	Fixes Savannah bug #1761.
+
 	* job.c (construct_command_argv_internal): Sanitize handling of
 	backslash/newline pairs according to POSIX: that is, keep the
 	backslash-newline in the command script, but remove a following

doc/make.texi

@@ -1099,7 +1099,8 @@ include @var{filenames}@dots{}
 @end example
 
 @noindent
-@var{filenames} can contain shell file name patterns.
+@var{filenames} can contain shell file name patterns.  If
+@var{filenames} is empty, nothing is included and no error is printed.
 @cindex shell file name pattern (in @code{include})
 @cindex shell wildcards (in @code{include})
 @cindex wildcard, in @code{include}
@@ -1379,6 +1380,10 @@ Supports secondary expansion of prerequisite lists.
 Supports ``job server'' enhanced parallel builds.  @xref{Parallel,
 ,Parallel Execution}.
 
+@item else-if
+Supports ``else if'' non-nested conditionals.  @xref{Conditional
+Syntax, ,Syntax of Conditionals}.
+
 @item check-symlink
 Supports the @code{-L} (@code{--check-symlink-times}) flag.
 @xref{Options Summary, ,Summary of Options}.

function.c

@@ -1482,7 +1482,10 @@ func_shell (char *o, char **argv, const char *funcname UNUSED)
      because target_environment hits a loop trying to expand $(var)
      to put it in the environment.  This is even more confusing when
      var was not explicitly exported, but just appeared in the
-     calling environment.  */
+     calling environment.
+
+  envp = target_environment (NILF);
+  */
 
   envp = environ;
 

main.c

@@ -1102,7 +1102,7 @@ main (int argc, char **argv, char **envp)
 
   /* Set up .FEATURES */
   define_variable (".FEATURES", 9,
-                   "target-specific order-only second-expansion",
+                   "target-specific order-only second-expansion else-if",
                    o_default, 0);
 #ifdef MAKE_JOBSERVER
   do_variable_definition (NILF, ".FEATURES", "jobserver",

make.h

@@ -276,16 +276,15 @@ extern void bzero PARAMS ((char *, int));
 extern void bcopy PARAMS ((const char *b1, char *b2, int));
 # endif
 
-#endif  /* ANSI_STRING.  */
-#undef  ANSI_STRING
-
 /* SCO Xenix has a buggy macro definition in <string.h>.  */
 #undef  strerror
-
-#if !defined(ANSI_STRING) && !defined(__DECC)
+#if !defined(__DECC)
 extern char *strerror PARAMS ((int errnum));
 #endif
 
+#endif  /* !ANSI_STRING.  */
+#undef  ANSI_STRING
+
 #if HAVE_INTTYPES_H
 # include <inttypes.h>
 #endif

read.c

@@ -800,12 +800,10 @@ eval (struct ebuffer *ebuf, int set_default)
 	  int noerror = (p[0] != 'i');
 
 	  p = allocated_variable_expand (p2);
+
+          /* If no filenames, it's a no-op.  */
 	  if (*p == '\0')
-	    {
-	      error (fstart,
-                     _("no file name for `%sinclude'"), noerror ? "-" : "");
             continue;
-	    }
 
 	  /* Parse the list of file names.  */
 	  p2 = p;

tests/ChangeLog

@@ -1,5 +1,12 @@
+2005-06-26  Paul D. Smith  <psmith@gnu.org>
+
+	* scripts/functions/shell: New test suite for the shell function.
+
 2005-06-25  Paul D. Smith  <psmith@gnu.org>
 
+	* scripts/features/include: Test include/-include/sinclude with no
+	arguments.  Tests fix for Savannah bug #1761.
+
 	* scripts/misc/general3: Implement comprehensive testing of
 	backslash-newline behavior in command scripts: various types of
 	quoting, fast path / slow path, etc.

tests/scripts/features/include

@@ -107,4 +107,14 @@ foo: bar; @:
 bar:; @false
 ', '', '');
 
+# Check include, sinclude, -include with no filenames.
+# (Savannah bug #1761).
+
+run_make_test('
+.PHONY: all
+all:; @:
+include
+-include
+sinclude', '', '');
+
 1;

tests/scripts/functions/shell

@@ -0,0 +1,23 @@
+#                                                                    -*-perl-*-
+
+$description = 'Test the $(shell ...) function.';
+
+$details = '';
+
+
+# Test shells inside rules.
+run_make_test('.PHONY: all
+all: ; @echo $(shell echo hi)
+','','hi');
+
+
+# Test shells inside exported environment variables.
+# This is the test that fails if we try to put make exported variables into
+# the environment for a $(shell ...) call.
+run_make_test('
+export HI = $(shell echo hi)
+.PHONY: all
+all: ; @echo $$HI
+','','hi');
+
+1;