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From: Jimmy Olgeni <olgeni@FreeBSD.org>
Date: Fri, 17 Aug 2012 13:16:43 +0000 (UTC)
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Subject: svn commit: r302681 - head/lang/erlang
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Author: olgeni
Date: Fri Aug 17 13:16:43 2012
New Revision: 302681
URL: http://svn.freebsd.org/changeset/ports/302681

Log:
  Add experimental DTrace support.
  
  Obtained from:	Kenji Rikitake's Erlang port on github
  		https://github.com/jj1bdx/erlang-freebsd-port

Modified:
  head/lang/erlang/Makefile

Modified: head/lang/erlang/Makefile
==============================================================================
--- head/lang/erlang/Makefile	Fri Aug 17 12:12:52 2012	(r302680)
+++ head/lang/erlang/Makefile	Fri Aug 17 13:16:43 2012	(r302681)
@@ -44,7 +44,7 @@ SUB_LIST=	TOOLS_VSN=${TOOLS_VSN}
 
 MAKE_JOBS_UNSAFE=yes
 
-OPTIONS_DEFINE=	DOCS GS HIPE JAVA KQUEUE ODBC OPENSSL SCTP SMP THREADS WX
+OPTIONS_DEFINE=	DOCS GS HIPE JAVA KQUEUE ODBC OPENSSL SCTP SMP THREADS WX DTRACE
 OPTIONS_SINGLE=	ODBC
 OPTIONS_SINGLE_ODBC=	IODBC UNIXODBC
 
@@ -54,11 +54,26 @@ SCTP_DESC=	Enable SCTP support
 SMP_DESC=	Enable SMP support
 WX_DESC=	Enable WX application
 GS_DESC=	Enable GS application (deprecated)
+DTRACE_DESC=	Enable DTrace support (experimental)
 
 OPTIONS_DEFAULT=SMP OPENSSL THREADS SCTP KQUEUE
 
 .include <bsd.port.options.mk>
 
+# See http://wiki.freebsd.org/DTrace to learn how to enable DTrace
+# on your system. You will need to configure STRIP, WITH_CTF and
+# CFLAGS in your make.conf before building.
+
+# If you run Erlang and get a message resembling "WARNING: number of
+# probes fixed does not match the number of defined probes (54 != 132,
+# respectively)" you probably misconfigured DTrace in some way.
+
+.if ${PORT_OPTIONS:MDTRACE}
+CONFIGURE_ARGS+=--with-dynamic-trace=dtrace
+.else
+CONFIGURE_ARGS+=--without-dynamic-trace
+.endif
+
 .if ${PORT_OPTIONS:MOPENSSL}
 USE_OPENSSL=	yes
 CONFIGURE_ARGS+=--with-ssl=${OPENSSLBASE}