diff --git a/src/configure b/src/configure
index 03375b0fd..2622bb4bf 100755
--- a/src/configure
+++ b/src/configure
@@ -737,6 +737,7 @@ infodir
 docdir
 oldincludedir
 includedir
+runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -866,6 +867,7 @@ datadir='${datarootdir}'
 sysconfdir='${prefix}/etc'
 sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
+runstatedir='${localstatedir}/run'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
 docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
@@ -1118,6 +1120,15 @@ do
   | -silent | --silent | --silen | --sile | --sil)
     silent=yes ;;
 
+  -runstatedir | --runstatedir | --runstatedi | --runstated \
+  | --runstate | --runstat | --runsta | --runst | --runs \
+  | --run | --ru | --r)
+    ac_prev=runstatedir ;;
+  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
+  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
+  | --run=* | --ru=* | --r=*)
+    runstatedir=$ac_optarg ;;
+
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1255,7 +1266,7 @@ fi
 for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
 		datadir sysconfdir sharedstatedir localstatedir includedir \
 		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-		libdir localedir mandir
+		libdir localedir mandir runstatedir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -1408,6 +1419,7 @@ Fine tuning of the installation directories:
   --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
   --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
   --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
   --libdir=DIR            object code libraries [EPREFIX/lib]
   --includedir=DIR        C header files [PREFIX/include]
   --oldincludedir=DIR     C header files for non-gcc [/usr/include]
@@ -1512,7 +1524,7 @@ Optional Packages:
   --with-asdf             include ASDF building facility (yes|builtin|no,
                           default=YES)
   --with-defsystem        include DEFSYSTEM building facility (yes|builtin|no,
-                          default=YES)
+                          default=NO)
   --with-cmp              build the compiler (yes|builtin|no, default=YES)
   --with-bytecmp          build the bytecodes compiler (yes|builtin|no,
                           default=YES)
@@ -9434,6 +9446,8 @@ fi
 done
 
 
+$as_echo "#define HAVE_FEENABLEEXCEPT /**/" >>confdefs.h
+
 ac_fn_c_check_decl "$LINENO" "feenableexcept" "ac_cv_have_decl_feenableexcept" "#include <fenv.h>
 "
 if test "x$ac_cv_have_decl_feenableexcept" = xyes; then :
@@ -9447,7 +9461,7 @@ cat >>confdefs.h <<_ACEOF
 _ACEOF
 if test $ac_have_decl = 1; then :
   $as_echo "#define HAVE_FEENABLEEXCEPT 1" >>confdefs.h
-
+, , HAVE_FEENABLEEXCEPT
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: feenableexcept not declared: disabling floating point exceptions" >&5
 $as_echo "$as_me: WARNING: feenableexcept not declared: disabling floating point exceptions" >&2;}
diff --git a/src/configure.ac b/src/configure.ac
index 27ffaac3c..c9a8faba2 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -182,7 +182,7 @@ AC_ARG_WITH(asdf,
 AC_ARG_WITH(defsystem,
   AS_HELP_STRING( [--with-defsystem],
                   [include DEFSYSTEM building facility]
-                  [(yes|builtin|no, default=YES)]),
+                  [(yes|builtin|no, default=NO)]),
   [], [with_defsystem=no])
 
 AC_ARG_WITH(cmp,
@@ -749,8 +749,10 @@ dnl !!! end autoscan
 AC_CHECK_FUNCS( [nanosleep alarm times select setenv putenv] \
                 [lstat mkstemp sigprocmask isatty tzset] \
 		[gettimeofday getrusage] )
-
-AC_CHECK_DECLS([feenableexcept], [AC_DEFINE(HAVE_FEENABLEEXCEPT)], [AC_MSG_WARN(feenableexcept not declared: disabling floating point exceptions)], [#include <fenv.h>])
+AC_DEFINE([HAVE_FEENABLEEXCEPT], [], [Description])
+AC_CHECK_DECLS([feenableexcept],
+               [AC_DEFINE(HAVE_FEENABLEEXCEPT), [], [HAVE_FEENABLEEXCEPT]],
+               [AC_MSG_WARN(feenableexcept not declared: disabling floating point exceptions)], [#include <fenv.h>])
 
 AC_CHECK_FUNCS( [expf logf sqrtf cosf sinf tanf sinhf coshf tanhf] \
 		[floorf ceilf fabsf frexpf ldexpf log1p log1pf log1pl] \
diff --git a/src/ecl/configpre.h b/src/ecl/configpre.h
index 2abf2d3a7..1fdfb2a75 100644
--- a/src/ecl/configpre.h
+++ b/src/ecl/configpre.h
@@ -102,6 +102,10 @@
 /* Define to 1 if you have the `cosl' function. */
 #undef HAVE_COSL
 
+/* Define to 1 if you have the declaration of `feenableexcept', and to 0 if
+   you don't. */
+#undef HAVE_DECL_FEENABLEEXCEPT
+
 /* Define to 1 if you have the <dirent.h> header file. */
 #undef HAVE_DIRENT_H
 
@@ -129,7 +133,7 @@
 /* Define to 1 if you have the <fcntl.h> header file. */
 #undef HAVE_FCNTL_H
 
-/* Define to 1 if you have the `feenableexcept' function. */
+/* Description */
 #undef HAVE_FEENABLEEXCEPT
 
 /* Define to 1 if you have the <fenv.h> header file. */