diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index d06406a3e87..72b421b54dd 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,16 @@
+2005-04-13  Gabriel Dos Reis  <gdr@integrable-solutions.net>
+
+	* asprintf.c: Include config.h.
+	* basename.c: Likewise.
+	* fdmatch.c: Likewise.
+	* hex.c: Likewise.
+	* lbasename.c: Likewise.
+	* spaces.c: Likewise.
+	* xatexit.c:Likewise.
+	* configure.ac:  Do check declarations for basename, ffs, asprintf 
+	and vasprintf for real.
+	* configure: Regenerate.
+
 2005-04-13  Gabriel Dos Reis  <gdr@integrable-solutions.net>
 
 	* argv.c (dupargv): Allocate space of argv[argc], not 
diff --git a/libiberty/argv.c b/libiberty/argv.c
index ad4c9a79388..bfa3896d089 100644
--- a/libiberty/argv.c
+++ b/libiberty/argv.c
@@ -22,6 +22,9 @@ Boston, MA 02111-1307, USA.  */
 /*  Create and destroy argument vectors.  An argument vector is simply an
     array of string pointers, terminated by a NULL pointer. */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include "ansidecl.h"
 #include "libiberty.h"
 
diff --git a/libiberty/asprintf.c b/libiberty/asprintf.c
index 3ef067ffac7..adcdcc28404 100644
--- a/libiberty/asprintf.c
+++ b/libiberty/asprintf.c
@@ -19,6 +19,9 @@ License along with libiberty; see the file COPYING.LIB.  If
 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include "ansidecl.h"
 #include "libiberty.h"
 
diff --git a/libiberty/basename.c b/libiberty/basename.c
index 037a9060145..0f2c069f0cc 100644
--- a/libiberty/basename.c
+++ b/libiberty/basename.c
@@ -12,6 +12,9 @@ Behavior is undefined if the pathname ends in a directory separator.
 
 */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include "ansidecl.h"
 #include "libiberty.h"
 #include "safe-ctype.h"
diff --git a/libiberty/configure b/libiberty/configure
index c518aecb7ad..d9c54256425 100755
--- a/libiberty/configure
+++ b/libiberty/configure
@@ -6915,6 +6915,288 @@ _ACEOF
 fi
 done
 
+  echo "$as_me:$LINENO: checking whether basename is declared" >&5
+echo $ECHO_N "checking whether basename is declared... $ECHO_C" >&6
+if test "${ac_cv_have_decl_basename+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.  */
+$ac_includes_default
+int
+main ()
+{
+#ifndef basename
+  char *p = (char *) basename;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$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 $ac_status); }; }; then
+  ac_cv_have_decl_basename=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_have_decl_basename=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_have_decl_basename" >&5
+echo "${ECHO_T}$ac_cv_have_decl_basename" >&6
+if test $ac_cv_have_decl_basename = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_BASENAME 1
+_ACEOF
+
+
+else
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_BASENAME 0
+_ACEOF
+
+
+fi
+echo "$as_me:$LINENO: checking whether ffs is declared" >&5
+echo $ECHO_N "checking whether ffs is declared... $ECHO_C" >&6
+if test "${ac_cv_have_decl_ffs+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.  */
+$ac_includes_default
+int
+main ()
+{
+#ifndef ffs
+  char *p = (char *) ffs;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$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 $ac_status); }; }; then
+  ac_cv_have_decl_ffs=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_have_decl_ffs=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_have_decl_ffs" >&5
+echo "${ECHO_T}$ac_cv_have_decl_ffs" >&6
+if test $ac_cv_have_decl_ffs = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_FFS 1
+_ACEOF
+
+
+else
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_FFS 0
+_ACEOF
+
+
+fi
+echo "$as_me:$LINENO: checking whether asprintf is declared" >&5
+echo $ECHO_N "checking whether asprintf is declared... $ECHO_C" >&6
+if test "${ac_cv_have_decl_asprintf+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.  */
+$ac_includes_default
+int
+main ()
+{
+#ifndef asprintf
+  char *p = (char *) asprintf;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$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 $ac_status); }; }; then
+  ac_cv_have_decl_asprintf=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_have_decl_asprintf=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_have_decl_asprintf" >&5
+echo "${ECHO_T}$ac_cv_have_decl_asprintf" >&6
+if test $ac_cv_have_decl_asprintf = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_ASPRINTF 1
+_ACEOF
+
+
+else
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_ASPRINTF 0
+_ACEOF
+
+
+fi
+echo "$as_me:$LINENO: checking whether vasprintf is declared" >&5
+echo $ECHO_N "checking whether vasprintf is declared... $ECHO_C" >&6
+if test "${ac_cv_have_decl_vasprintf+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.  */
+$ac_includes_default
+int
+main ()
+{
+#ifndef vasprintf
+  char *p = (char *) vasprintf;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$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 $ac_status); }; }; then
+  ac_cv_have_decl_vasprintf=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_have_decl_vasprintf=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_have_decl_vasprintf" >&5
+echo "${ECHO_T}$ac_cv_have_decl_vasprintf" >&6
+if test $ac_cv_have_decl_vasprintf = yes; then
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_VASPRINTF 1
+_ACEOF
+
+
+else
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_VASPRINTF 0
+_ACEOF
+
+
+fi
+
+
   echo "$as_me:$LINENO: checking whether canonicalize_file_name must be declared" >&5
 echo $ECHO_N "checking whether canonicalize_file_name must be declared... $ECHO_C" >&6
 if test "${libiberty_cv_decl_needed_canonicalize_file_name+set}" = set; then
diff --git a/libiberty/configure.ac b/libiberty/configure.ac
index b7932ec0846..92362d0b8b6 100644
--- a/libiberty/configure.ac
+++ b/libiberty/configure.ac
@@ -518,6 +518,7 @@ if test -z "${setobjs}"; then
     [AC_MSG_RESULT([no])])
 
   AC_CHECK_FUNCS($checkfuncs)
+  AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf])
   libiberty_NEED_DECLARATION(canonicalize_file_name)
 fi
 
diff --git a/libiberty/fdmatch.c b/libiberty/fdmatch.c
index 76ad36f1de8..84df7845bbd 100644
--- a/libiberty/fdmatch.c
+++ b/libiberty/fdmatch.c
@@ -41,6 +41,9 @@ BUGS
 
 */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include "ansidecl.h"
 #include "libiberty.h"
 #include <sys/types.h>
diff --git a/libiberty/hex.c b/libiberty/hex.c
index 9e4e306a7d4..5738762a7b2 100644
--- a/libiberty/hex.c
+++ b/libiberty/hex.c
@@ -18,6 +18,9 @@ not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */
 
 #include <stdio.h>  /* for EOF */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include "libiberty.h"
 #include "safe-ctype.h" /* for HOST_CHARSET_ASCII */
 
diff --git a/libiberty/lbasename.c b/libiberty/lbasename.c
index 4afe890013e..45858c84de9 100644
--- a/libiberty/lbasename.c
+++ b/libiberty/lbasename.c
@@ -37,6 +37,9 @@ and a path ending in @code{/} returns the empty string after it.
 
 */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include "ansidecl.h"
 #include "libiberty.h"
 #include "safe-ctype.h"
diff --git a/libiberty/spaces.c b/libiberty/spaces.c
index 6df0b13f0d2..8666abe2026 100644
--- a/libiberty/spaces.c
+++ b/libiberty/spaces.c
@@ -29,6 +29,9 @@ valid until at least the next call.
 
 */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include "ansidecl.h"
 #include "libiberty.h"
 
diff --git a/libiberty/xatexit.c b/libiberty/xatexit.c
index f29338a9f2a..6fdad9ed806 100644
--- a/libiberty/xatexit.c
+++ b/libiberty/xatexit.c
@@ -22,6 +22,9 @@ failure.  If you use @code{xatexit} to register functions, you must use
 /* Adapted from newlib/libc/stdlib/{,at}exit.[ch].
    If you use xatexit, you must call xexit instead of exit.  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include "ansidecl.h"
 #include "libiberty.h"