cmake

[m6w6/libmemcached] / m4 / pandora_enable_dtrace.m4

diff --git a/m4/pandora_enable_dtrace.m4 b/m4/pandora_enable_dtrace.m4
index e1f82da088225eafbf4883d57285ba0d668441d4..4edf46f23ed58b88eeb5b78267c939c5bf336810 100644 (file)
--- a/m4/pandora_enable_dtrace.m4
+++ b/m4/pandora_enable_dtrace.m4
@@ -1,5 +1,5 @@
-dnl  Copyright (C) 2009 Sun Microsystems
-dnl This file is free software; Sun Microsystems
+dnl  Copyright (C) 2009 Sun Microsystems, Inc.
+dnl This file is free software; Sun Microsystems, Inc.
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
@@ -9,29 +9,48 @@ dnl ---------------------------------------------------------------------------
 AC_DEFUN([PANDORA_ENABLE_DTRACE],[
   AC_ARG_ENABLE([dtrace],
     [AS_HELP_STRING([--enable-dtrace],
-            [Build with support for the DTRACE. @<:@default=off@:>@])],
-    [ac_cv_enable_dtrace="yes"],
+            [Build with support for the DTRACE. @<:@default=no@:>@])],
+    [ac_cv_enable_dtrace="$enableval"],
     [ac_cv_enable_dtrace="no"])
 
   AS_IF([test "$ac_cv_enable_dtrace" = "yes"],[
     AC_CHECK_PROGS([DTRACE], [dtrace])
-    AS_IF([test "x$ac_cv_prog_DTRACE" = "xdtrace"],[
-      AC_DEFINE([HAVE_DTRACE], [1], [Enables DTRACE Support])
-      dnl DTrace on MacOSX does not use -G option
-      cat >conftest.d <<_ACEOF
+    AC_CHECK_HEADERS(sys/sdt.h)
+
+    AS_IF([test "x$ac_cv_prog_DTRACE" = "xdtrace" -a "x${ac_cv_header_sys_sdt_h}" = "xyes"],[
+
+      AC_CACHE_CHECK([if dtrace works],[ac_cv_dtrace_works],[
+        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])
-      rm -f conftest.d.o conftest.d
-
+        $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$ac_cv_have_dtrace" = "xyes"])
+AM_CONDITIONAL([HAVE_DTRACE], [test "x$ac_cv_dtrace_works" = "xyes"])
 AM_CONDITIONAL([DTRACE_NEEDS_OBJECTS],
                [test "x$ac_cv_dtrace_needs_objects" = "xyes"])