diff -dur gcl-2.6.8.ORIG/configure gcl-2.6.8/configure
--- gcl-2.6.8.ORIG/configure	2009-08-11 10:57:23.131471438 -0600
+++ gcl-2.6.8/configure	2009-08-11 11:01:13.331496734 -0600
@@ -14608,27 +14608,19 @@
 for ac_header in asm/signal.h
 do
 as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
-  { $as_echo "$as_me:$LINENO: checking for $ac_header" >&5
+{ $as_echo "$as_me:$LINENO: checking for $ac_header" >&5
 $as_echo_n "checking for $ac_header... " >&6; }
 if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
   $as_echo_n "(cached) " >&6
-fi
-ac_res=`eval 'as_val=${'$as_ac_Header'}
-		 $as_echo "$as_val"'`
-	       { $as_echo "$as_me:$LINENO: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
 else
-  # Is the header compilable?
-{ $as_echo "$as_me:$LINENO: checking $ac_header usability" >&5
-$as_echo_n "checking $ac_header usability... " >&6; }
-cat >conftest.$ac_ext <<_ACEOF
+  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
+#define __ASSEMBLY__
+
 #include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
@@ -14649,96 +14641,20 @@
 	 test -z "$ac_c_werror_flag" ||
 	 test ! -s conftest.err
        } && test -s conftest.$ac_objext; then
-  ac_header_compiler=yes
+  eval "$as_ac_Header=yes"
 else
   $as_echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-	ac_header_compiler=no
+	eval "$as_ac_Header=no"
 fi
 
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ $as_echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-$as_echo "$ac_header_compiler" >&6; }
-
-# Is the header present?
-{ $as_echo "$as_me:$LINENO: checking $ac_header presence" >&5
-$as_echo_n "checking $ac_header presence... " >&6; }
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <$ac_header>
-_ACEOF
-if { (ac_try="$ac_cpp conftest.$ac_ext"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
-$as_echo "$ac_try_echo") >&5
-  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null && {
-	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       }; then
-  ac_header_preproc=yes
-else
-  $as_echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-
-rm -f conftest.err conftest.$ac_ext
-{ $as_echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-$as_echo "$ac_header_preproc" >&6; }
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { $as_echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-$as_echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { $as_echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-$as_echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { $as_echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-$as_echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { $as_echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-$as_echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { $as_echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-$as_echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { $as_echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-$as_echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { $as_echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-$as_echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { $as_echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-$as_echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-
-    ;;
-esac
-{ $as_echo "$as_me:$LINENO: checking for $ac_header" >&5
-$as_echo_n "checking for $ac_header... " >&6; }
-if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
-  $as_echo_n "(cached) " >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
 fi
 ac_res=`eval 'as_val=${'$as_ac_Header'}
 		 $as_echo "$as_val"'`
 	       { $as_echo "$as_me:$LINENO: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-
-fi
 as_val=`eval 'as_val=${'$as_ac_Header'}
 		 $as_echo "$as_val"'`
    if test "x$as_val" = x""yes; then
@@ -14824,6 +14740,7 @@
              #include <asm/sigcontext.h>
              #endif
              #ifdef HAVE_ASM_SIGNAL_H
+             #define __ASSEMBLY__
              #include <asm/signal.h>
              #endif
 
diff -dur gcl-2.6.8.ORIG/configure.in gcl-2.6.8/configure.in
--- gcl-2.6.8.ORIG/configure.in	2009-08-11 10:57:23.139471057 -0600
+++ gcl-2.6.8/configure.in	2009-08-11 10:59:52.436473014 -0600
@@ -1592,7 +1592,7 @@
 
 #if test $use = "386-linux" ; then
 	AC_CHECK_HEADERS(asm/sigcontext.h)
-	AC_CHECK_HEADERS(asm/signal.h)
+	AC_CHECK_HEADERS(asm/signal.h, [], [], [#define __ASSEMBLY__])
 	AC_MSG_CHECKING([for sigcontext])
         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
        #include <signal.h>
@@ -1617,6 +1617,7 @@
              #include <asm/sigcontext.h>
              #endif
              #ifdef HAVE_ASM_SIGNAL_H          
+             #define __ASSEMBLY__
              #include <asm/signal.h>
              #endif
           ]],
diff -dur gcl-2.6.8.ORIG/h/386-linux.h gcl-2.6.8/h/386-linux.h
--- gcl-2.6.8.ORIG/h/386-linux.h	2005-01-15 09:28:16.000000000 -0700
+++ gcl-2.6.8/h/386-linux.h	2009-08-11 11:00:56.755526333 -0600
@@ -23,6 +23,7 @@
 #include <asm/sigcontext.h>
 #endif
 #ifdef  HAVE_ASM_SIGNAL_H          
+#define __ASSEMBLY__
 #include <asm/signal.h>
 #endif
 #endif     
diff -dur gcl-2.6.8.ORIG/h/m68k-linux.h gcl-2.6.8/h/m68k-linux.h
--- gcl-2.6.8.ORIG/h/m68k-linux.h	2004-06-24 09:16:54.000000000 -0600
+++ gcl-2.6.8/h/m68k-linux.h	2009-08-11 11:00:43.653478300 -0600
@@ -23,6 +23,7 @@
 #include <asm/sigcontext.h>
 #endif
 #ifdef  HAVE_ASM_SIGNAL_H          
+#define __ASSEMBLY__
 #include <asm/signal.h>
 #endif
 #endif     
diff -dur gcl-2.6.8.ORIG/o/test_memprotect.c gcl-2.6.8/o/test_memprotect.c
--- gcl-2.6.8.ORIG/o/test_memprotect.c	1999-12-06 15:44:13.000000000 -0700
+++ gcl-2.6.8/o/test_memprotect.c	2009-08-11 11:00:26.419472680 -0600
@@ -38,6 +38,7 @@
 
 char *malloc();
 
+#define __ASSEMBLY__
 #include <asm/signal.h>
 #include <asm/sigcontext.h>