collect2.c: Check HAVE_DUP2 instead of NO_DUP2.

	* collect2.c: Check HAVE_DUP2 instead of NO_DUP2.
	(dup2): Make static and add prototype.
	* m68k/plexus.h: Don't define NO_DUP2.
	* configure.in (AC_CHECK_FUNCS): Add dup2.
	* config.in, configure: Regenerate.

From-SVN: r47379

gcc/ChangeLog

 2001-11-27  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
+	* collect2.c: Check HAVE_DUP2 instead of NO_DUP2.
+	(dup2): Make static and add prototype.
+	* m68k/plexus.h: Don't define NO_DUP2.
+	* configure.in (AC_CHECK_FUNCS): Add dup2.
+	* config.in, configure: Regenerate.
+
 	* ia64/aix.h (REG_SIZE): Don't #undef.
 	* sparc.h (REG_SIZE): Delete.
 	* flow.c (mark_used_regs): Don't use REG_SIZE.

gcc/collect2.c

@@ -309,8 +309,9 @@ static int ignore_library	PARAMS ((const char *));
 #endif
 static char *extract_string	PARAMS ((const char **));
 
-#ifdef NO_DUP2
-int
+#ifndef HAVE_DUP2
+static int dup2 PARAMS ((int, int));
+static int
 dup2 (oldfd, newfd)
      int oldfd;
      int newfd;
@@ -329,7 +330,7 @@ dup2 (oldfd, newfd)
 
   return fd;
 }
-#endif
+#endif /* ! HAVE_DUP2 */
 
 /* Delete tempfiles and exit function.  */
 

gcc/config.in

-/* config.in.  Generated automatically from configure.in by autoheader 2.13.  */
+/* config.in.  Generated automatically from configure.in by autoheader.  */
 
 /* Define if using alloca.c.  */
 #undef C_ALLOCA
@@ -114,6 +114,9 @@
 /* Define if you have the dcgettext function.  */
 #undef HAVE_DCGETTEXT
 
+/* Define if you have the dup2 function.  */
+#undef HAVE_DUP2
+
 /* Define if you have the feof_unlocked function.  */
 #undef HAVE_FEOF_UNLOCKED
 
@@ -566,15 +569,16 @@
    and preserves file table indices exactly as given. */
 #undef HAVE_AS_DWARF2_DEBUG_LINE
 
-/* Define 0/1 to force the choice for exception handling model. */
-#undef CONFIG_SJLJ_EXCEPTIONS
-
 /* Define if your assembler supports the --gdwarf2 option. */
 #undef HAVE_AS_GDWARF2_DEBUG_FLAG
 
 /* Define if your assembler supports the --gstabs option. */
 #undef HAVE_AS_GSTABS_DEBUG_FLAG
 
+/* Define 0/1 to force the choice for exception handling model. */
+#undef CONFIG_SJLJ_EXCEPTIONS
+
+
 /* Bison unconditionally undefines `const' if neither `__STDC__' nor
    __cplusplus are defined.  That's a problem since we use `const' in
    the GCC headers, and the resulting bison code is therefore type

gcc/config/m68k/plexus.h

@@ -102,6 +102,5 @@ Boston, MA 02111-1307, USA.  */
 /***********************************************************************/
 
 #define NM_FLAGS ""
-#define NO_DUP2
 
 #define SIZE_TYPE "int"

gcc/configure

@@ -2078,7 +2078,7 @@ EOF
 fi
 
 # Find some useful tools
-for ac_prog in gawk mawk nawk awk
+for ac_prog in mawk gawk nawk awk
 do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
@@ -3397,7 +3397,7 @@ EOF
 fi
 
 
-for ac_func in strtoul bsearch popen times clock \
+for ac_func in strtoul bsearch popen times clock dup2 \
 	strchr strrchr kill getrlimit setrlimit atoll atoq \
 	sysconf isascii gettimeofday strsignal putc_unlocked fputc_unlocked \
 	fputs_unlocked fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \

gcc/configure.in

@@ -578,7 +578,7 @@ fi
 dnl Disabled until we have a complete test for buggy enum bitfields.
 dnl gcc_AC_C_ENUM_BF_UNSIGNED
 
-AC_CHECK_FUNCS(strtoul bsearch popen times clock \
+AC_CHECK_FUNCS(strtoul bsearch popen times clock dup2 \
 	strchr strrchr kill getrlimit setrlimit atoll atoq \
 	sysconf isascii gettimeofday strsignal putc_unlocked fputc_unlocked \
 	fputs_unlocked fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \