From a794b6b7b3bf4151b80ac6a10a222d60953f3d18 Mon Sep 17 00:00:00 2001
From: Thanassis Tsiodras <ttsiodras@gmail.com>
Date: Sun, 11 Dec 2022 17:44:22 +0100
Subject: [PATCH] Also, showcase automatically made #define USE_SSE

---
 Makefile.in  | 1 -
 config.h.in  | 3 +++
 configure    | 5 +++--
 configure.ac | 1 +
 4 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index 38b9520..16b17b1 100644
--- a/Makefile.in
+++ b/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@
diff --git a/config.h.in b/config.h.in
index cff7354..f1f6c86 100644
--- a/config.h.in
+++ b/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
 
diff --git a/configure b/configure
index c45418d..9142c99 100755
--- a/configure
+++ b/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="$CFLAGS -DNDEBUG"
diff --git a/configure.ac b/configure.ac
index a904110..cbc2d41 100644
--- a/configure.ac
+++ b/configure.ac
@@ -87,6 +87,7 @@ AC_MSG_RESULT($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