Date: Wed, 3 Jun 2015 13:17:33 +0000 From: Eric Badger <eric_badger@dell.com> To: =?iso-8859-1?Q?Mikael_=D6stlund?= <mikael.ostlund.93@gmail.com>, "freebsd-dtrace@freebsd.org" <freebsd-dtrace@freebsd.org> Subject: RE: Static probing Message-ID: <e85300bf53e141a1987151a002b62643@mspexmb1.Beer.Town> In-Reply-To: <CAGFZuoSC=yMMkOaNHvCU3nhEZov5z4P1Za-kzohEt6_TmjX21A@mail.gmail.com> References: <CAGFZuoSC=yMMkOaNHvCU3nhEZov5z4P1Za-kzohEt6_TmjX21A@mail.gmail.com>
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You must have DTrace generate a .o file to provide the missing function. So=
mething like:=0A=
=0A=
dtrace -h -s provider.d=0A=
cc -c dtracetest.c -o dtracetest.o=0A=
dtrace -G -s provider.d dtracetest.o=0A=
cc dtracetest.o provider.o -o dtracetest -lelf=0A=
=0A=
The standard makefile bsd.prog.mk also knows how to handle .d files in the =
SRCS list and will take care of things for you.=0A=
=0A=
Eric=0A=
________________________________________=0A=
From: Mikael =D6stlund <mikael.ostlund.93@gmail.com>=0A=
Sent: Wednesday, June 03, 2015 3:17 AM=0A=
To: freebsd-dtrace@freebsd.org=0A=
Subject: Static probing=0A=
=0A=
Hello,=0A=
=0A=
I'm experimenting with DTrace on my system and I'm not able to use static=
=0A=
probing in my code.=0A=
=0A=
Here's my c code:=0A=
=0A=
#include "provider.h"=0A=
=0A=
int main(void) {=0A=
TESTPROVIDER_TEST_START("hello");=0A=
return (0);=0A=
}=0A=
=0A=
And here's my provider.d file:=0A=
=0A=
provider testprovider {=0A=
probe test__start(char *);=0A=
probe test__done(char *);=0A=
};=0A=
=0A=
This is the error message I get when I try to compile my c file:=0A=
=0A=
# gcc dtracetest.c=0A=
/tmp//ccjWNu6v.o: In function `main':=0A=
dtracetest.c:(.text+0xa): undefined reference to=0A=
`__dtrace_testprovider___test__start'=0A=
collect2: error: ld returned 1 exit status=0A=
=0A=
(Same message no matter what compiler I try), any ideas?=0A=
_______________________________________________=0A=
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