1 files changed, 58 insertions, 0 deletions
diff --git a/third-party/libuv/m4/dtrace.m4 b/third-party/libuv/m4/dtrace.m4
new file mode 100644
index 0000000000..4060af3181
--- /dev/null
+++ b/third-party/libuv/m4/dtrace.m4
@@ -0,0 +1,58 @@
+dnl  Copyright (C) 2009 Sun Microsystems
+dnl This file is free software; Sun Microsystems
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl ---------------------------------------------------------------------------
+dnl Macro: PANDORA_ENABLE_DTRACE
+dnl ---------------------------------------------------------------------------
+AC_DEFUN([PANDORA_ENABLE_DTRACE],[
+  AC_ARG_ENABLE([dtrace],
+    [AS_HELP_STRING([--disable-dtrace],
+            [enable DTrace USDT probes. @<:@default=yes@:>@])],
+    [ac_cv_enable_dtrace="$enableval"],
+    [ac_cv_enable_dtrace="yes"])
+
+  AS_IF([test "$ac_cv_enable_dtrace" = "yes"],[
+    AC_CHECK_PROGS([DTRACE], [dtrace])
+    AS_IF([test "x$ac_cv_prog_DTRACE" = "xdtrace"],[
+
+      AC_CACHE_CHECK([if dtrace works],[ac_cv_dtrace_works],[
+        cat >conftest.d <<_ACEOF
+provider Example {
+  probe increment(int);
+};
+_ACEOF
+        $DTRACE -h -o conftest.h -s conftest.d 2>/dev/zero
+        AS_IF([test $? -eq 0],[ac_cv_dtrace_works=yes],
+          [ac_cv_dtrace_works=no])
+        rm -f conftest.h conftest.d
+      ])
+      AS_IF([test "x$ac_cv_dtrace_works" = "xyes"],[
+        AC_DEFINE([HAVE_DTRACE], [1], [Enables DTRACE Support])
+      ])
+      AC_CACHE_CHECK([if dtrace should instrument object files],
+        [ac_cv_dtrace_needs_objects],[
+          dnl DTrace on MacOSX does not use -G option
+          cat >conftest.d <<_ACEOF
+provider Example {
+  probe increment(int);
+};
+_ACEOF
+          $DTRACE -G -o conftest.d.o -s conftest.d 2>/dev/zero
+          AS_IF([test $? -eq 0],[ac_cv_dtrace_needs_objects=yes],
+            [ac_cv_dtrace_needs_objects=no])
+          rm -f conftest.d.o conftest.d
+      ])
+      AC_SUBST(DTRACEFLAGS) dnl TODO: test for -G on OSX
+      ac_cv_have_dtrace=yes
+    ])])
+
+AM_CONDITIONAL([HAVE_DTRACE], [test "x$ac_cv_dtrace_works" = "xyes"])
+AM_CONDITIONAL([DTRACE_NEEDS_OBJECTS],
+               [test "x$ac_cv_dtrace_needs_objects" = "xyes"])
+
+])
+dnl ---------------------------------------------------------------------------
+dnl End Macro: PANDORA_ENABLE_DTRACE
+dnl ---------------------------------------------------------------------------