Date: Wed, 3 Jun 2015 16:21:12 +0200 From: =?UTF-8?Q?Mikael_=C3=96stlund?= <mikael.ostlund.93@gmail.com> To: Eric Badger <eric_badger@dell.com> Cc: "freebsd-dtrace@freebsd.org" <freebsd-dtrace@freebsd.org> Subject: Re: Static probing Message-ID: <CAGFZuoTfE3CiAc3TWgOY7NOrYy3h16Em8u1P3RWJpGMzvVqFCA@mail.gmail.com> In-Reply-To: <e85300bf53e141a1987151a002b62643@mspexmb1.Beer.Town> References: <CAGFZuoSC=yMMkOaNHvCU3nhEZov5z4P1Za-kzohEt6_TmjX21A@mail.gmail.com> <e85300bf53e141a1987151a002b62643@mspexmb1.Beer.Town>
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Thank you, worked straight away.
2015-06-03 15:17 GMT+02:00 Eric Badger <eric_badger@dell.com>:
> You must have DTrace generate a .o file to provide the missing function.
> Something like:
>
> dtrace -h -s provider.d
> cc -c dtracetest.c -o dtracetest.o
> dtrace -G -s provider.d dtracetest.o
> cc dtracetest.o provider.o -o dtracetest -lelf
>
> 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.
>
> Eric
> ________________________________________
> From: Mikael =C3=96stlund <mikael.ostlund.93@gmail.com>
> Sent: Wednesday, June 03, 2015 3:17 AM
> To: freebsd-dtrace@freebsd.org
> Subject: Static probing
>
> Hello,
>
> I'm experimenting with DTrace on my system and I'm not able to use static
> probing in my code.
>
> Here's my c code:
>
> #include "provider.h"
>
> int main(void) {
> TESTPROVIDER_TEST_START("hello");
> return (0);
> }
>
> And here's my provider.d file:
>
> provider testprovider {
> probe test__start(char *);
> probe test__done(char *);
> };
>
> This is the error message I get when I try to compile my c file:
>
> # gcc dtracetest.c
> /tmp//ccjWNu6v.o: In function `main':
> dtracetest.c:(.text+0xa): undefined reference to
> `__dtrace_testprovider___test__start'
> collect2: error: ld returned 1 exit status
>
> (Same message no matter what compiler I try), any ideas?
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