Also, showcase automatically made #define USE_SSE

Makefile.in

@@ -297,7 +297,6 @@ SET_MAKE = @SET_MAKE@
 SHELL = @SHELL@
 STRIP = @STRIP@
 VERSION = @VERSION@
-WHOLEPROGRAM = @WHOLEPROGRAM@
 abs_builddir = @abs_builddir@
 abs_srcdir = @abs_srcdir@
 abs_top_builddir = @abs_top_builddir@

config.h.in

@@ -99,6 +99,9 @@
    backward compatibility; new code need not use it. */
 #undef STDC_HEADERS
 
+/* Defined when SSE instructions are available. */
+#undef USE_SSE
+
 /* Version number of package */
 #undef VERSION
 

configure

@@ -650,7 +650,6 @@ ac_header_cxx_list=
 ac_subst_vars='am__EXEEXT_FALSE
 am__EXEEXT_TRUE
 LTLIBOBJS
-WHOLEPROGRAM
 CPP
 LIBOBJS
 ALLOCA
@@ -8071,8 +8070,10 @@ case ".$var" in
  ;;
 esac
 
-fi
 
+printf "%s\n" "#define USE_SSE 1" >>confdefs.h
+
+fi
 
 # Drop any asserts
 CFLAGS="$CFLAGS -DNDEBUG"

configure.ac

@@ -87,6 +87,7 @@ AC_MSG_RESULT($HAVESSE)
 if test x"${HAVESSE}" = xyes ; then
         AX_CFLAGS_GCC_OPTION(-msse)
         AX_CXXFLAGS_GCC_OPTION(-msse)
+        AC_DEFINE([USE_SSE], 1, [Defined when SSE instructions are available.])
 fi
 
 # Drop any asserts