Re: [Jack-Devel] FW: Jack beginner question - which files are Jack's library files?

I'm a beginner myself but:

Have you tried separating the compile and link steps?

gcc -c -o metro.o metro.c
gcc -o metronome metro.o -ljack

BTW I believe "-L" should point to the include path (e.g., 
/usr/include/jack) rather than to the libraries (/usr/lib/...).
You can check the pkg-config with 
pkg-config --cflags jack
pkg-config --libs jack

hope this helps

John Mills

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On Sun, Sep 01, 2013 at 12:11:06AM +0000, Val Veirs (R) wrote:
> Date: Sun, 1 Sep 2013 00:11:06 +0000
> From: "Val Veirs (R)" <[hidden]>
> Subject: [Jack-Devel] FW: Jack beginner question - which files are Jack's
>  library files?
> To: "[hidden]" <[hidden]>
> 
> I a still trying to get a simple Jack program to compile (Ubuntu 13.04 64 bit)
> 
> The problem seems to be that even when I point gcc toward the folder where the Jack libraries are, the compiler reports undefined reference errors.
> 
> For example,
> If I run gcc with no libraries, I get undefined reference errors:
> 
> val@zar:~/JackFiles/testJack$ gcc -o metronome   metro.c
> /tmp/cc4akFsZ.o: In function `signal_handler':
> metro.c:(.text+0x16): undefined reference to `jack_client_close'
> /tmp/cc4akFsZ.o: In function `process_silence':
> metro.c:(.text+0x81): undefined reference to `jack_port_get_buffer'
> /tmp/cc4akFsZ.o: In function `process_audio':
> ....
> Here I tried both a -L and a -l parameter:
> val@zar:~/JackFiles/testJack$ gcc -o metronome -L/usr/lib/x86_64-linux-gnu -ljack metro.c
> 
> /tmp/ccksW4it.o: In function `signal_handler':
> metro.c:(.text+0x16): undefined reference to `jack_client_close'
> /tmp/ccksW4it.o: In function `process_silence':
> metro.c:(.text+0x81): undefined reference to `jack_port_get_buffer'
> /tmp/ccksW4it.o: In function `process_audio':
> ...
> 
> I get the same errors if I omit the -L with path to the libjack.so files
> val@zar:~/JackFiles/testJack$ gcc -o metronome  -ljack metro.c
> 
> /tmp/cc5oyTHv.o: In function `signal_handler':
> metro.c:(.text+0x16): undefined reference to `jack_client_close'
> …
> And the same if I include the -L and omit the -l
> val@zar:~/JackFiles/testJack$ gcc -o metronome -L/usr/lib/x86_64-linux-gnu  metro.c
> 
> /tmp/cchbhuv2.o: In function `signal_handler':
> metro.c:(.text+0x16): undefined reference to `jack_client_close'
> ...
> 
> All this makes me feel that the files that I think are Jack's library files are not in fact the library files or the files are 'incorrect' in some way.
...
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