Properly handle the case where strlcpy() exists in libc but isn't

declared in the system headers.  Per report from Bruce than some BSDen
are like this.

configure

@@ -13191,80 +13191,6 @@ fi
 
 fi
 
-# This is probably only present on Darwin, but may as well check always
-echo "$as_me:$LINENO: checking whether F_FULLFSYNC is declared" >&5
-echo $ECHO_N "checking whether F_FULLFSYNC is declared... $ECHO_C" >&6
-if test "${ac_cv_have_decl_F_FULLFSYNC+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <fcntl.h>
-
-int
-main ()
-{
-#ifndef F_FULLFSYNC
-  char *p = (char *) F_FULLFSYNC;
-#endif
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_have_decl_F_FULLFSYNC=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_cv_have_decl_F_FULLFSYNC=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: $ac_cv_have_decl_F_FULLFSYNC" >&5
-echo "${ECHO_T}$ac_cv_have_decl_F_FULLFSYNC" >&6
-if test $ac_cv_have_decl_F_FULLFSYNC = yes; then
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_F_FULLFSYNC 1
-_ACEOF
-
-
-else
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_F_FULLFSYNC 0
-_ACEOF
-
-
-fi
-
-
 
 ##
 ## Functions, global variables
@@ -13780,6 +13706,152 @@ _ACEOF
 fi
 
 
+echo "$as_me:$LINENO: checking whether strlcpy is declared" >&5
+echo $ECHO_N "checking whether strlcpy is declared... $ECHO_C" >&6
+if test "${ac_cv_have_decl_strlcpy+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+#ifndef strlcpy
+  char *p = (char *) strlcpy;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_have_decl_strlcpy=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_have_decl_strlcpy=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_have_decl_strlcpy" >&5
+echo "${ECHO_T}$ac_cv_have_decl_strlcpy" >&6
+if test $ac_cv_have_decl_strlcpy = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_STRLCPY 1
+_ACEOF
+
+
+else
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_STRLCPY 0
+_ACEOF
+
+
+fi
+
+
+# This is probably only present on Darwin, but may as well check always
+echo "$as_me:$LINENO: checking whether F_FULLFSYNC is declared" >&5
+echo $ECHO_N "checking whether F_FULLFSYNC is declared... $ECHO_C" >&6
+if test "${ac_cv_have_decl_F_FULLFSYNC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <fcntl.h>
+
+int
+main ()
+{
+#ifndef F_FULLFSYNC
+  char *p = (char *) F_FULLFSYNC;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_have_decl_F_FULLFSYNC=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_have_decl_F_FULLFSYNC=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_have_decl_F_FULLFSYNC" >&5
+echo "${ECHO_T}$ac_cv_have_decl_F_FULLFSYNC" >&6
+if test $ac_cv_have_decl_F_FULLFSYNC = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_F_FULLFSYNC 1
+_ACEOF
+
+
+else
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_F_FULLFSYNC 0
+_ACEOF
+
+
+fi
+
+
 
 HAVE_IPV6=no
 echo "$as_me:$LINENO: checking for struct sockaddr_in6" >&5

configure.in

 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.477 2006/10/01 23:47:16 tgl Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.478 2006/10/02 00:06:18 tgl Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -854,8 +854,6 @@ if test "$with_krb5" = yes; then
                    [#include <krb5.h>])
 fi
 
-# This is probably only present on Darwin, but may as well check always
-AC_CHECK_DECLS(F_FULLFSYNC, [], [], [#include <fcntl.h>])
 
 ##
 ## Functions, global variables
@@ -869,6 +867,9 @@ AC_CHECK_FUNCS([cbrt dlopen fcvt fdatasync getpeereid memmove poll pstat readlin
 
 AC_CHECK_DECLS(fdatasync, [], [], [#include <unistd.h>])
 AC_CHECK_DECLS(posix_fadvise, [], [], [#include <fcntl.h>])
+AC_CHECK_DECLS(strlcpy)
+# This is probably only present on Darwin, but may as well check always
+AC_CHECK_DECLS(F_FULLFSYNC, [], [], [#include <fcntl.h>])
 
 HAVE_IPV6=no
 AC_CHECK_TYPE([struct sockaddr_in6],

src/include/pg_config.h.in

@@ -87,6 +87,10 @@
    don't. */
 #undef HAVE_DECL_SNPRINTF
 
+/* Define to 1 if you have the declaration of `strlcpy', and to 0 if you
+   don't. */
+#undef HAVE_DECL_STRLCPY
+
 /* Define to 1 if you have the declaration of `vsnprintf', and to 0 if you
    don't. */
 #undef HAVE_DECL_VSNPRINTF

src/include/port.h

@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/port.h,v 1.101 2006/09/30 12:06:42 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/port.h,v 1.102 2006/10/02 00:06:18 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -332,7 +332,7 @@ extern int	inet_aton(const char *cp, struct in_addr * addr);
 extern char *strdup(const char *str);
 #endif
 
-#if !defined(HAVE_STRLCPY) || defined(bsdi) /* bsdi doesn't have the prototype */
+#if !HAVE_DECL_STRLCPY
 extern size_t strlcpy(char *dst, const char *src, size_t siz);
 #endif