+# Find arch type
+AS_CASE([$host_cpu],
+ [k1om], [ARCHTYPE="x86"],
+ [i386], [ARCHTYPE="x86"],
+ [i486], [ARCHTYPE="x86"],
+ [i586], [ARCHTYPE="x86"],
+ [i686], [ARCHTYPE="x86"],
+ [amd64], [ARCHTYPE="x86"],
+ [x86_64], [ARCHTYPE="x86"],
+ [powerpc], [ARCHTYPE="ppc"],
+ [ppc64], [ARCHTYPE="ppc"],
+ [powerpc64], [ARCHTYPE="ppc"],
+ [powerpc64le], [ARCHTYPE="ppc"],
+ [ppc], [ARCHTYPE="ppc"],
+ [s390], [ARCHTYPE="s390"],
+ [s390x], [ARCHTYPE="s390"],
+ [sparc], [ARCHTYPE="sparc64"],
+ [sparc64], [ARCHTYPE="sparc64"],
+ [alpha*], [ARCHTYPE="alpha"],
+ [ia64], [ARCHTYPE="ia64"],
+ [arm*], [ARCHTYPE="arm"],
+ [aarch64*], [ARCHTYPE="aarch64"],
+ [mips*], [ARCHTYPE="mips"],
+ [nios2*], [ARCHTYPE="nios2"],
+ [tile*], [ARCHTYPE="tile"],
+ [hppa*], [ARCHTYPE="hppa"],
+ [m68k], [ARCHTYPE="m68k"],
+ [riscv*], [ARCHTYPE="riscv"],
+ [ARCHTYPE="unknown"]
+)
+
+AC_SUBST(ARCHTYPE)
+
+AS_CASE([$host_os],
+ [linux*], [OSTYPE="linux"],
+ [freebsd*], [OSTYPE="freebsd"],
+ [solaris*], [OSTYPE="solaris"],
+ [cygwin*], [OSTYPE="cygwin"],
+ [mingw*], [OSTYPE="mingw"],
+ [OSTYPE="unknown"]
+)
+AC_SUBST(OSTYPE)
+AM_CONDITIONAL([IS_LINUX], [test $OSTYPE = "linux"])
+
+
+
+# Userspace callstack capture is only supported by the Linux kernel on x86.
+AH_TEMPLATE([HAVE_MODULES_USERSPACE_CALLSTACK_CONTEXT], [Define if you have LTTng-modules userspace callstack tracing support])
+AS_IF([test "x$ARCHTYPE" = "xx86" && test "x$OSTYPE" = "xlinux"],[
+ have_modules_userspace_callstack_context=yes
+ AC_DEFINE([HAVE_MODULES_USERSPACE_CALLSTACK_CONTEXT], [1])
+])
+AM_CONDITIONAL([HAVE_MODULES_USERSPACE_CALLSTACK_CONTEXT], [test x$have_modules_userspace_callstack_context = xyes])