diff --git a/configure b/configure
index 8e38f4d4..58f56b00 100755
--- a/configure
+++ b/configure
@@ -2113,6 +2113,14 @@ else
 fi
 
 
+# Use GNU extensions if available.
+
+cat >>confdefs.h <<\_ACEOF
+#define _GNU_SOURCE 1
+_ACEOF
+
+
+
 # For djgpp support.  (Note: This needs to be before AC_PROG_CC.)
 case "$target" in
 *-*-*djgpp)
@@ -3787,7 +3795,7 @@ ia64-*-hpux*)
   ;;
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 3790 "configure"' > conftest.$ac_ext
+  echo '#line 3798 "configure"' > conftest.$ac_ext
   if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   (eval $ac_compile) 2>&5
   ac_status=$?
@@ -5284,7 +5292,7 @@ fi
 
 
 # Provide some information about the compiler.
-echo "$as_me:5287:" \
+echo "$as_me:5295:" \
      "checking for Fortran 77 compiler version" >&5
 ac_compiler=`set X $ac_compile; echo $2`
 { (eval echo "$as_me:$LINENO: \"$ac_compiler --version </dev/null >&5\"") >&5
@@ -6289,11 +6297,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:6292: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:6300: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:6296: \$? = $ac_status" >&5
+   echo "$as_me:6304: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -6521,11 +6529,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:6524: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:6532: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:6528: \$? = $ac_status" >&5
+   echo "$as_me:6536: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -6588,11 +6596,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:6591: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:6599: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:6595: \$? = $ac_status" >&5
+   echo "$as_me:6603: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -8607,7 +8615,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 8610 "configure"
+#line 8618 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -8705,7 +8713,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 8708 "configure"
+#line 8716 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -10837,11 +10845,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:10840: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:10848: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:10844: \$? = $ac_status" >&5
+   echo "$as_me:10852: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -10904,11 +10912,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:10907: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:10915: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:10911: \$? = $ac_status" >&5
+   echo "$as_me:10919: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -12154,7 +12162,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 12157 "configure"
+#line 12165 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12252,7 +12260,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 12255 "configure"
+#line 12263 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13074,11 +13082,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:13077: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:13085: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:13081: \$? = $ac_status" >&5
+   echo "$as_me:13089: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -13141,11 +13149,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:13144: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:13152: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:13148: \$? = $ac_status" >&5
+   echo "$as_me:13156: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -15088,11 +15096,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:15091: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:15099: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:15095: \$? = $ac_status" >&5
+   echo "$as_me:15103: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -15320,11 +15328,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:15323: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:15331: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:15327: \$? = $ac_status" >&5
+   echo "$as_me:15335: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -15387,11 +15395,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:15390: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:15398: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:15394: \$? = $ac_status" >&5
+   echo "$as_me:15402: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -17406,7 +17414,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 17409 "configure"
+#line 17417 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -17504,7 +17512,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 17507 "configure"
+#line 17515 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -18510,14 +18518,6 @@ LIBTOOL='$(SHELL) $(top_builddir)/libtool'
 
 
 
-
-# Use GNU extensions if available.(AIA)
-
-cat >>confdefs.h <<\_ACEOF
-#define _GNU_SOURCE 1
-_ACEOF
-
-
 
 # Enable large file support.
 # Check whether --enable-largefile or --disable-largefile was given.
diff --git a/configure.ac b/configure.ac
index 0994d71d..b6c22530 100644
--- a/configure.ac
+++ b/configure.ac
@@ -84,6 +84,9 @@ AC_ARG_ENABLE(really-static,
 )
 AM_CONDITIONAL(REALLYSTATIC, test "$enable_really_static" = yes)
 
+# Use GNU extensions if available.
+AC_GNU_SOURCE
+
 # For djgpp support.  (Note: This needs to be before AC_PROG_CC.)
 case "$target" in
 *-*-*djgpp)
@@ -100,9 +103,6 @@ AC_PROG_LN_S
 AC_PROG_MAKE_SET
 AC_PROG_LIBTOOL
 
-# Use GNU extensions if available.(AIA)
-AC_GNU_SOURCE
-
 # Enable large file support.
 AC_SYS_LARGEFILE