Change HAVE_SSE42 to HAVE_SSE4_2 add $(SIMD_FLAGS)

Add autotools macros to distribution
Call AX_EXT to define HAVE_SSE4_2

Change-Id: I9ff085d923dfafb32510cdd14290e74a2aaea302
Reviewed-on: https://code.wireshark.org/review/2110
Tested-by: Anders Broman <a.broman58@gmail.com>
Reviewed-by: Jeff Morriss <jeff.morriss.ws@gmail.com>
Reviewed-by: Anders Broman <a.broman58@gmail.com>

7 files changed, 18 insertions, 8 deletions

diff --git a/Makefile.am b/Makefile.am
index c6da3d1d32..5da8d50fd4 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -709,6 +709,10 @@ EXTRA_DIST = \
 	aclocal-fallback/glib-2.0.m4 \
 	aclocal-fallback/gtk-2.0.m4 \
 	aclocal-fallback/gtk-3.0.m4 \
+	aclocal-fallback/ax_check_compile_flag.m4	\
+	aclocal-fallback/ax_gcc_x86_cpuid.m4	\
+	aclocal-fallback/ax_ext.m4	\
+	aclocal-fallback/ax_gcc_x86_avx_xgetbv.m4	\
 	aclocal-flags		\
 	adns_dll.dep		\
 	adns_dll.rc		\
diff --git a/config.h.win32 b/config.h.win32
index 2b7249be09..d0b370f225 100644
--- a/config.h.win32
+++ b/config.h.win32
@@ -283,4 +283,4 @@ typedef int ssize_t;
 #endif
 
 /* to use define _ws_mempbrk_sse42 if available (checked with cpuinfo)  */
-#define HAVE_SSE42 1
\ No newline at end of file
+#define HAVE_SSE4_2 1
\ No newline at end of file
diff --git a/configure.ac b/configure.ac
index d17b28f210..e5a806fe0b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -60,6 +60,12 @@ AC_PROG_CPP
 AC_PROG_MKDIR_P
 AC_WIRESHARK_CLANG_CHECK
 
+#   Find supported SIMD extensions by requesting cpuid. When an SIMD
+#   extension is found, the -m"simdextensionname" is added to SIMD_FLAGS
+#   (only if compilator support it) (ie : if "sse2" is available "-msse2" is
+#   added to SIMD_FLAGS)
+AX_EXT
+
 dnl Work around libtool bug (fixed in the version 1.5a?)
 AC_DEFUN([AC_PROVIDE_AC_LIBTOOL_DLOPEN], )
 AC_LIBTOOL_DLOPEN
diff --git a/wsutil/Makefile.am b/wsutil/Makefile.am
index 98273637f0..868f9d79a8 100644
--- a/wsutil/Makefile.am
+++ b/wsutil/Makefile.am
@@ -83,7 +83,7 @@ libwsutil_la_SOURCES =		\
 libwsutil_sse42_la_SOURCES = \
 	ws_mempbrk_sse42.c
 	
-libwsutil_sse42_la_CFLAGS = $(AM_CFLAGS) -msse4.2
+libwsutil_sse42_la_CFLAGS = $(AM_CFLAGS) $(SIMD_FLAGS)
 
 EXTRA_libwsutil_la_SOURCES=	\
 	inet_aton.c		\
diff --git a/wsutil/ws_mempbrk.c b/wsutil/ws_mempbrk.c
index c167166689..c24cedb404 100644
--- a/wsutil/ws_mempbrk.c
+++ b/wsutil/ws_mempbrk.c
@@ -23,7 +23,7 @@
 
 #include <glib.h>
 #include "ws_symbol_export.h"
-#ifdef HAVE_SSE42
+#ifdef HAVE_SSE4_2
 #include "ws_cpuid.h"
 #endif
 #include "ws_mempbrk.h"
@@ -50,13 +50,13 @@ _ws_mempbrk(const guint8* haystack, size_t haystacklen, const guint8 *needles)
 WS_DLL_PUBLIC const guint8 *
 ws_mempbrk(const guint8* haystack, size_t haystacklen, const guint8 *needles)
 {
-#ifdef HAVE_SSE42
+#ifdef HAVE_SSE4_2
 	static int have_sse42 = -1;
 #endif
 	if (*needles == 0)
 		return NULL;
 
-#ifdef HAVE_SSE42
+#ifdef HAVE_SSE4_2
 	if G_UNLIKELY(have_sse42 < 0)
 		have_sse42 = ws_cpuid_sse42();
 
diff --git a/wsutil/ws_mempbrk.h b/wsutil/ws_mempbrk.h
index 5f515321fd..72f37d574a 100644
--- a/wsutil/ws_mempbrk.h
+++ b/wsutil/ws_mempbrk.h
@@ -26,7 +26,7 @@
 
 WS_DLL_PUBLIC const guint8 *ws_mempbrk(const guint8* haystack, size_t haystacklen, const guint8 *needles);
 
-#ifdef HAVE_SSE42
+#ifdef HAVE_SSE4_2
 const char *_ws_mempbrk_sse42(const char* haystack, size_t haystacklen, const char *needles);
 #endif
 
diff --git a/wsutil/ws_mempbrk_sse42.c b/wsutil/ws_mempbrk_sse42.c
index ac9ecd281c..07c6504f55 100644
--- a/wsutil/ws_mempbrk_sse42.c
+++ b/wsutil/ws_mempbrk_sse42.c
@@ -20,7 +20,7 @@
 
 #include "config.h"
 
-#ifdef HAVE_SSE42
+#ifdef HAVE_SSE4_2
 
 #include <glib.h>
 
@@ -191,7 +191,7 @@ _ws_mempbrk_sse42(const char *s, size_t slen, const char *a)
     return _ws_mempbrk(aligned, slen, a);
 }
 
-#endif /* HAVE_SSE42 */
+#endif /* HAVE_SSE4_2 */
 /*
  * Editor modelines
  *