Move CPU detection code after OS-specific settings and logging system

initialization so that we can use compilation checks inside it.

Originally committed as revision 12602 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -1054,79 +1054,6 @@ for opt do
     esac
 done
 
-case "$arch" in
-    i386|i486|i586|i686|i86pc|BePC)
-        arch="x86_32"
-        enable fast_unaligned
-    ;;
-    x86_64|amd64)
-        arch="x86_32"
-        enable fast_unaligned
-        canon_arch="`$cc -dumpmachine | sed -e 's,\([^-]*\)-.*,\1,'`"
-        if [ x"$canon_arch" = x"x86_64" -o x"$canon_arch" = x"amd64" ]; then
-            if ! echo $CFLAGS | grep -q -- -m32; then
-                arch="x86_64"
-                enable fast_64bit
-            fi
-        fi
-    ;;
-    # armv4l is a subset of armv[567]*l
-    arm|armv[4567]*l)
-        arch="armv4l"
-    ;;
-    alpha)
-        arch="alpha"
-        enable fast_64bit
-    ;;
-    "Power Macintosh"|ppc|powerpc)
-        arch="powerpc"
-    ;;
-    ppc64)
-        arch="powerpc"
-        enable fast_64bit
-    ;;
-    mips|mipsel|IP*)
-        arch="mips"
-    ;;
-    sun4u|sparc64)
-        arch="sparc64"
-        enable fast_64bit
-    ;;
-    sparc)
-        arch="sparc"
-    ;;
-    sh4)
-        arch="sh4"
-    ;;
-    parisc)
-        arch="parisc"
-    ;;
-    parisc64)
-        arch="parisc"
-        enable fast_64bit
-    ;;
-    s390|s390x)
-        arch="s390"
-    ;;
-    m68k)
-        arch="m68k"
-    ;;
-    ia64)
-        arch="ia64"
-        enable fast_64bit
-    ;;
-    bfin)
-        arch="bfin"
-    ;;
-    *)
-        arch="unknown"
-    ;;
-esac
-
-enable $arch
-enabled_any x86_32 x86_64 && enable x86
-enabled     sparc64       && enable sparc
-
 # OS specific
 case $target_os in
     beos|haiku|zeta)
@@ -1298,6 +1225,79 @@ disabled logging && logfile=/dev/null
 echo "# $0 $@" >$logfile
 set >>$logfile
 
+case "$arch" in
+    i386|i486|i586|i686|i86pc|BePC)
+        arch="x86_32"
+        enable fast_unaligned
+    ;;
+    x86_64|amd64)
+        arch="x86_32"
+        enable fast_unaligned
+        canon_arch="`$cc -dumpmachine | sed -e 's,\([^-]*\)-.*,\1,'`"
+        if [ x"$canon_arch" = x"x86_64" -o x"$canon_arch" = x"amd64" ]; then
+            if ! echo $CFLAGS | grep -q -- -m32; then
+                arch="x86_64"
+                enable fast_64bit
+            fi
+        fi
+    ;;
+    # armv4l is a subset of armv[567]*l
+    arm|armv[4567]*l)
+        arch="armv4l"
+    ;;
+    alpha)
+        arch="alpha"
+        enable fast_64bit
+    ;;
+    "Power Macintosh"|ppc|powerpc)
+        arch="powerpc"
+    ;;
+    ppc64)
+        arch="powerpc"
+        enable fast_64bit
+    ;;
+    mips|mipsel|IP*)
+        arch="mips"
+    ;;
+    sun4u|sparc64)
+        arch="sparc64"
+        enable fast_64bit
+    ;;
+    sparc)
+        arch="sparc"
+    ;;
+    sh4)
+        arch="sh4"
+    ;;
+    parisc)
+        arch="parisc"
+    ;;
+    parisc64)
+        arch="parisc"
+        enable fast_64bit
+    ;;
+    s390|s390x)
+        arch="s390"
+    ;;
+    m68k)
+        arch="m68k"
+    ;;
+    ia64)
+        arch="ia64"
+        enable fast_64bit
+    ;;
+    bfin)
+        arch="bfin"
+    ;;
+    *)
+        arch="unknown"
+    ;;
+esac
+
+enable $arch
+enabled_any x86_32 x86_64 && enable x86
+enabled     sparc64       && enable sparc
+
 # Combine FFLDFLAGS and the LDFLAGS environment variable.
 LDFLAGS="$FFLDFLAGS $LDFLAGS"