1 files changed, 67 insertions, 0 deletions
diff --git a/m4/dpkg-arch.m4 b/m4/dpkg-arch.m4
new file mode 100644
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+++ b/m4/dpkg-arch.m4
@@ -0,0 +1,67 @@
+# serial 1
+# Copyright © 2005 Scott James Remnant <scott@netsplit.com>
+# Copyright © 2006-2009 Guillem Jover <guillem@debian.org>
+
+# _DPKG_ARCHITECTURE([DEB_VAR], [sh_var])
+# ---------------------------------------
+# Use dpkg-architecture from the source tree to set sh_var using DEB_VAR for
+# the target architecture, to avoid duplicating its logic.
+AC_DEFUN([_DPKG_ARCHITECTURE], [
+  AC_REQUIRE([DPKG_PROG_PERL])dnl
+  AC_REQUIRE([AC_CANONICAL_HOST])dnl
+  $2=$(PERL=$PERL ${CONFIG_SHELL-/bin/sh} "$srcdir/build-aux/run-script" scripts/dpkg-architecture.pl -t$host -q$1 2>/dev/null)
+])# _DPKG_ARCHITECTURE
+
+# DPKG_CPU_TYPE
+# -------------
+# Parse the host cpu name and check it against the cputable to determine
+# the Debian name for it.  Sets ARCHITECTURE_CPU.
+AC_DEFUN([DPKG_CPU_TYPE], [
+  AC_MSG_CHECKING([dpkg cpu type])
+  _DPKG_ARCHITECTURE([DEB_HOST_ARCH_CPU], [cpu_type])
+  AS_IF([test "x$cpu_type" = "x"], [
+    cpu_type=$host_cpu
+    AC_MSG_RESULT([$cpu_type])
+    AC_MSG_WARN([$host_cpu not found in cputable])
+  ], [
+    AC_MSG_RESULT([$cpu_type])
+  ])
+  AC_DEFINE_UNQUOTED([ARCHITECTURE_CPU], ["${cpu_type}"],
+    [Set this to the canonical dpkg CPU name.])
+])# DPKG_CPU_TYPE
+
+# DPKG_OS_TYPE
+# ------------
+# Parse the host operating system name and check it against a list of
+# special cases to determine what type it is.  Sets ARCHITECTURE_OS.
+AC_DEFUN([DPKG_OS_TYPE], [
+  AC_MSG_CHECKING([dpkg operating system type])
+  _DPKG_ARCHITECTURE([DEB_HOST_ARCH_OS], [os_type])
+  AS_IF([test "x$os_type" = "x"], [
+    os_type=$host_os
+    AC_MSG_RESULT([$os_type])
+    AC_MSG_WARN([$host_os not found in ostable])
+  ], [
+    AC_MSG_RESULT([$os_type])
+  ])
+  AC_DEFINE_UNQUOTED([ARCHITECTURE_OS], ["${os_type}"],
+    [Set this to the canonical dpkg system name.])
+])# DPKG_OS_TYPE
+
+# DPKG_ARCHITECTURE
+# ------------------------
+# Determine the Debian name for the host operating system,
+# sets ARCHITECTURE.
+AC_DEFUN([DPKG_ARCHITECTURE], [
+  DPKG_CPU_TYPE
+  DPKG_OS_TYPE
+  AC_MSG_CHECKING([dpkg architecture name])
+  _DPKG_ARCHITECTURE([DEB_HOST_ARCH], [dpkg_arch])
+  AS_IF([test "x$dpkg_arch" = "x"], [
+    AC_MSG_ERROR([cannot determine host dpkg architecture])
+  ], [
+    AC_MSG_RESULT([$dpkg_arch])
+  ])
+  AC_DEFINE_UNQUOTED([ARCHITECTURE], ["${dpkg_arch}"],
+    [Set this to the canonical dpkg architecture name.])
+])# DPKG_ARCHITECTURE