Define GST_MAJORMINOR and HOST_CPU in the configure.ac (like gst)

1 files changed, 123 insertions, 0 deletions

diff --git a/common/m4/gst-arch.m4 b/common/m4/gst-arch.m4
new file mode 100644
index 00000000..8a32bd23
--- /dev/null
+++ b/common/m4/gst-arch.m4
@@ -0,0 +1,123 @@
+dnl AG_GST_ARCH
+dnl sets up defines and automake conditionals for host architecture
+dnl checks endianness
+dnl defines HOST_CPU
+
+AC_DEFUN([AG_GST_ARCH],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use host_ variables
+
+  dnl Determine CPU
+  case "x${host_cpu}" in
+    xi?86 | xk? | xi?86_64)
+      HAVE_CPU_I386=yes
+      AC_DEFINE(HAVE_CPU_I386, 1, [Define if the host CPU is an x86])
+  
+      dnl FIXME could use some better detection
+      dnl (ie CPUID)
+      case "x${host_cpu}" in
+        xi386 | xi486) ;;
+        *)
+          AC_DEFINE(HAVE_RDTSC, 1, [Define if RDTSC is available]) ;;
+      esac ;;
+    xpowerpc)
+      HAVE_CPU_PPC=yes
+      AC_DEFINE(HAVE_CPU_PPC, 1, [Define if the host CPU is a PowerPC]) ;;
+    xpowerpc64)
+      HAVE_CPU_PPC64=yes
+      AC_DEFINE(HAVE_CPU_PPC64, 1, [Define if the host CPU is a 64 bit PowerPC]) ;;
+    xalpha*)
+      HAVE_CPU_ALPHA=yes
+      AC_DEFINE(HAVE_CPU_ALPHA, 1, [Define if the host CPU is an Alpha]) ;;
+    xarm*)
+      HAVE_CPU_ARM=yes
+      AC_DEFINE(HAVE_CPU_ARM, 1, [Define if the host CPU is an ARM]) ;;
+    xsparc*)
+      HAVE_CPU_SPARC=yes
+      AC_DEFINE(HAVE_CPU_SPARC, 1, [Define if the host CPU is a SPARC]) ;;
+    xmips*)
+      HAVE_CPU_MIPS=yes
+      AC_DEFINE(HAVE_CPU_MIPS, 1, [Define if the host CPU is a MIPS]) ;;
+    xhppa*)
+      HAVE_CPU_HPPA=yes
+      AC_DEFINE(HAVE_CPU_HPPA, 1, [Define if the host CPU is a HPPA]) ;;
+    xs390*)
+      HAVE_CPU_S390=yes
+      AC_DEFINE(HAVE_CPU_S390, 1, [Define if the host CPU is a S390]) ;;
+    xia64*)
+      HAVE_CPU_IA64=yes
+      AC_DEFINE(HAVE_CPU_IA64, 1, [Define if the host CPU is a IA64]) ;;
+    xm68k*)
+      HAVE_CPU_M68K=yes
+      AC_DEFINE(HAVE_CPU_M68K, 1, [Define if the host CPU is a M68K]) ;;
+    xx86_64)
+      HAVE_CPU_X86_64=yes
+      AC_DEFINE(HAVE_CPU_X86_64, 1, [Define if the host CPU is a x86_64]) ;;
+    xcris)
+      HAVE_CPU_CRIS=yes
+      AC_DEFINE(HAVE_CPU_CRIS, 1, [Define if the host CPU is a CRIS]) ;;
+    xcrisv32)
+      HAVE_CPU_CRISV32=yes
+      AC_DEFINE(HAVE_CPU_CRISV32, 1, [Define if the host CPU is a CRISv32]) ;;
+  esac
+  
+  dnl Determine endianness
+  AC_C_BIGENDIAN
+  
+  AM_CONDITIONAL(HAVE_CPU_I386,       test "x$HAVE_CPU_I386" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_PPC,        test "x$HAVE_CPU_PPC" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_PPC64,      test "x$HAVE_CPU_PPC64" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_ALPHA,      test "x$HAVE_CPU_ALPHA" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_ARM,        test "x$HAVE_CPU_ARM" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_SPARC,      test "x$HAVE_CPU_SPARC" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_HPPA,       test "x$HAVE_CPU_HPPA" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_MIPS,       test "x$HAVE_CPU_MIPS" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_S390,       test "x$HAVE_CPU_S390" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_IA64,       test "x$HAVE_CPU_IA64" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_M68K,       test "x$HAVE_CPU_M68K" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_X86_64,     test "x$HAVE_CPU_X86_64" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_CRIS,       test "x$HAVE_CPU_CRIS" = "xyes")
+  AM_CONDITIONAL(HAVE_CPU_CRISV32,    test "x$HAVE_CPU_CRISV32" = "xyes")
+
+  AC_DEFINE_UNQUOTED(HOST_CPU, "$host_cpu", [the host CPU])
+])
+
+dnl check if unaligned memory access works correctly
+AC_DEFUN([AG_GST_UNALIGNED_ACCESS], [
+  AC_MSG_CHECKING([if unaligned memory access works correctly])
+  if test x"$as_cv_unaligned_access" = x ; then
+    case $host in
+      alpha*|arm*|hp*|mips*|sh*|sparc*|ia64*)
+        _AS_ECHO_N([(blacklisted) ])
+        as_cv_unaligned_access=no
+	;;
+      i?86*|powerpc*|m68k*|cris*)
+        _AS_ECHO_N([(whitelisted) ])
+        as_cv_unaligned_access=yes
+	;;
+    esac
+  else
+    _AS_ECHO_N([(cached) ])
+  fi
+  if test x"$as_cv_unaligned_access" = x ; then
+    AC_TRY_RUN([
+int main(int argc, char **argv)
+{
+  char array[] = "ABCDEFGH";
+  unsigned int iarray[2];
+  memcpy(iarray,array,8);
+#define GET(x) (*(unsigned int *)((char *)iarray + (x)))
+  if(GET(0) != 0x41424344 && GET(0) != 0x44434241) return 1;
+  if(GET(1) != 0x42434445 && GET(1) != 0x45444342) return 1;
+  if(GET(2) != 0x43444546 && GET(2) != 0x46454443) return 1;
+  if(GET(3) != 0x44454647 && GET(3) != 0x47464544) return 1;
+  return 0;
+}
+    ], as_cv_unaligned_access="yes", as_cv_unaligned_access="no")
+  fi
+  AC_MSG_RESULT($as_cv_unaligned_access)
+  if test "$as_cv_unaligned_access" = "yes"; then
+    AC_DEFINE_UNQUOTED(HAVE_UNALIGNED_ACCESS, 1,
+      [defined if unaligned memory access works correctly])
+  fi
+])