Re: error: ‘t_signal’ {aka ‘struct _sig nal’} has no member named ‘s_length’

IOhannes m zmoelnig <[email protected]> Thu, 12 Sep 2024 18:01:28 +0200

Newsgroups	gmane.comp.multimedia.puredata.general
Message-ID	<[email protected]>

On 9/12/24 17:32, Alexandros Drymonitis wrote:
> Working on an object of mine, I copied code from snake_in~ and 
> snake_out~ to enable multi-channel I/Os, but I get errors on s_length 
> and s_nchans. More specifically, I get the following:
>
> 
> Is it likely that the Makefile is looking at an m_pd.h older than 
> 0-54.0?

yes.

> I have installed 0-55.1 by compiling it. 

so, where does the header come from?

assuming you are running a Debian(derivative), you probably also have 
the "puredata-dev" package installed, which installs the headers to 
/usr/include/pd/ - and Makefile.pdlibbuilder uses this path as the 
default (if available).

to quote from the Makefile.pdlibbuilder:
```
# Default search path for m_pd.h and other API header files is platform
# dependent, and overridable by PDINCLUDEDIR:
#
# Linux:    /usr/include/pd
```

> Is there something I 
> need to do to point the compiler to the correct m_pd.h file?

since the Makefile.pdlibbuilder is the canonical documentation of itself 
(it has plenty of comments explaining its workings), i guess this is 
just the answer.
```
make PDINCLUDEDIR=/usr/local/include/pd
```

(i guess pd-lib-bulider could prefer /usr/local/include/pd over 
/usr/include/pd, you could create an issue)

gfadsmnr
IOhannes

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