Remove compile time/runtime CPU detection, and drop some platforms

mplayer had three ways of enabling CPU specific assembler routines:
a) Enable them at compile time; crash if the CPU can't handle it.
b) Enable them at compile time, but let the configure script detect
   your CPU. Your binary will only crash if you try to run it on a
   different system that has less features than yours.
   This was the default, I think.
c) Runtime detection.

The implementation of b) and c) suck. a) is not really feasible (it
sucks for users). Remove all code related to this, and use libav's CPU
detection instead. Now the configure script will always enable CPU
specific features, and disable them at runtime if libav reports them
not as available.

One implication is that now the compiler is always expected to handle
SSE (etc.) inline assembly at runtime, unless it's explicitly disabled.

Only checks for x86 CPU specific features are kept, the rest is either
unused or barely used.

Get rid of all the dump -mpcu, -march etc. flags. Trust the compiler
to select decent settings.

Get rid of support for the following operating systems:
- BSD/OS (some ancient BSD fork)
- QNX (don't care)
- BeOS (dead, Haiku support is still welcome)
- AIX (don't care)
- HP-UX (don't care)
- OS/2 (dead, actual support has been removed a while ago)

Remove the configure code for detecting the endianness. Instead, use
the standard header <endian.h>, which can be used if _GNU_SOURCE or
_BSD_SOURCE is defined. (Maybe these changes should have been in a
separate commit.)

Since this is a quite violent code removal orgy, and I'm testing only
on x86 32 bit Linux, expect regressions.

3 files changed, 7 insertions, 3 deletions

diff --git a/libvo/osd.c b/libvo/osd.c
index 992ffc01f3..08cda11a81 100644
--- a/libvo/osd.c
+++ b/libvo/osd.c
@@ -27,6 +27,7 @@
 #include "osd.h"
 #include "mp_msg.h"
 #include <inttypes.h>
+#include <endian.h>
 #include "cpudetect.h"
 
 #if ARCH_X86
@@ -35,6 +36,8 @@ static const unsigned long long mask24lh  __attribute__((aligned(8))) = 0xFFFF00
 static const unsigned long long mask24hl  __attribute__((aligned(8))) = 0x0000FFFFFFFFFFFFULL;
 #endif
 
+#define CONFIG_RUNTIME_CPUDETECT 1
+
 //Note: we have C, X86-nommx, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
 //Plain C versions
 #if !HAVE_MMX || CONFIG_RUNTIME_CPUDETECT
diff --git a/libvo/osd_template.c b/libvo/osd_template.c
index 6d8305a3c5..103d169b32 100644
--- a/libvo/osd_template.c
+++ b/libvo/osd_template.c
@@ -320,7 +320,7 @@ static inline void RENAME(vo_draw_alpha_rgb24)(int w,int h, unsigned char* src,
 
 static inline void RENAME(vo_draw_alpha_rgb32)(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride){
     int y;
-#if HAVE_BIGENDIAN
+#if BYTE_ORDER == BIG_ENDIAN
     dstbase++;
 #endif
 #if HAVE_MMX
diff --git a/libvo/vo_x11.c b/libvo/vo_x11.c
index 9be47c9d8a..3b264b232c 100644
--- a/libvo/vo_x11.c
+++ b/libvo/vo_x11.c
@@ -19,6 +19,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <endian.h>
 
 #include "config.h"
 #include "video_out.h"
@@ -261,7 +262,7 @@ static void freeMyXImage(void)
     ImageData = NULL;
 }
 
-#if HAVE_BIGENDIAN
+#if BYTE_ORDER == BIG_ENDIAN
 #define BO_NATIVE    MSBFirst
 #define BO_NONNATIVE LSBFirst
 #else
@@ -431,7 +432,7 @@ static int config(uint32_t width, uint32_t height, uint32_t d_width,
     // we can easily "emulate" them.
     if (out_format & 64 && (IMGFMT_IS_RGB(out_format) || IMGFMT_IS_BGR(out_format))) {
       out_format &= ~64;
-#if HAVE_BIGENDIAN
+#if BYTE_ORDER == BIG_ENDIAN
       out_offset = 1;
 #else
       out_offset = -1;