Oh my goodness, against all odds I have gotten this working! I now have the comport object working on piCore. It’s hard to overstate how pleased I am, thanks so much for your help.
For future generations (or, more likely, myself in the future), the steps to my success were: - install the “compiletc.tcz” tools. Previously I had only installed gcc.tcz and make.tcz, and apparently that wasn’t enough. - copy a m_pd.h file from elsewhere, and reference the path to that in my “make” command so it looked like this: “make PDINCLUDEDIR=/path/to/file/“ And it worked! The comport object now loads in a patch without errors. I even managed to get some data through from USB, though after a reboot the serial port seems to have reset, so there’s more work to be done to make it stable. This is major progress, though. Antoine, as to your question: > I've always stuck to raspbian until now, but it's always a hassle to turn it > to a read-only file system, to allow disconnecting the power without having > to cleanly shut down the system. Apparently TCL could make it easier, would > you confirm? I’m probably not the best person to answer this, as to be honest I’ve never bothered with “cleanly” shutting down the system when running something on a Raspberry Pi. I always just unplug it, and as far as I know it’s never caused me any issues…however I’m happy to admit that this was poor practice. I would imagine that TCL is better with this regard, since as far as I understand as little is written permanently to disk as possible. However I’m really not very educated on the matter - my primary desire to use TCL was to get a shorter startup time and a generally cleaner setup! > On Oct 27, 2020, at 6:05 PM, Antoine Rousseau <anto...@metalu.net> wrote: > > If you cannot find the m_pd.h in your system, you can always import it from > another one into the comport (or whatever) directory. > > Anyway thanks for sharing information about Pd + tiny core linux, I would > love to find some time soon for experimenting on this too; > I've always stuck to raspbian until now, but it's always a hassle to turn it > to a read-only file system, to allow disconnecting the power without having > to cleanly shut down the system. Apparently TCL could make it easier, would > you confirm? > > > Le mar. 27 oct. 2020 à 21:01, Giulio Moro via Pd-list <pd-list@lists.iem.at > <mailto:pd-list@lists.iem.at>> a écrit : > Each Makefile has a different way of looking for the path where m_pd.h, and > where it is located on your system depends on how you installed Pd ... > normally `find /usr/include /usr/local/include -name m_pd.h` will tell you > where the file is. Once you know where it is, you can inspect the `Makefile` > to figure out which way to pass this information to it. > Normally this boils down to passing some options to `make`, such as > PDINCLUDEDIR=/path/to/containing/folder or CFLAGS="-DPD > -I/path/to/containing/folder" or others, depending on the content of the > Makefile (these are two real-world examples). (or you can just hardcode the > path in the Makefile next to where you see a `-I/somepath `, add ` > -I/path/to/containing/folder` and see if it works. > > A link to the source files would be useful if you need further help. > > > Yann Seznec wrote on 27/10/2020 19:34: > > OK interesting - with the verbose flag on I can see that it is finding > > comport.pd_linux, but it says “/lib/libc.so.6: version ‘GLIBC_2.27’ not > > found (required by /home/tc/comport_test/comport.pd_linux)” > > > > I assume that means that it needs to be compiled for the board > > specifically, as you mention. > > > > Unfortunately when I try to compile it on the board I get yet another, > > different error. In that case it says “fatal error: m_pd.h: No such file or > > directory”. > > > > I think I understand that it’s looking for where Pd is installed, but I > > can’t seem to find where that file is in Tiny Core Linux. > > > > Thanks Giuilio! > > > >> On Oct 27, 2020, at 3:14 PM, Giulio Moro <giuliom...@yahoo.it > >> <mailto:giuliom...@yahoo.it>> wrote: > >> > >> That's a Linux build, but is it an ARM build compatible with the > >> architecture in use? > >> Try `file /path/to/comport.ld_linux` and make sure you get the same result > >> as you'd get for any externals that actually work. You can run `Pd` with > >> the verbose flag and that should print some extra info about the paths it > >> is attempting to open. In fairness, it should be pretty straightforward to > >> just build it from source on the board, which guarantees you get the > >> correct binary. > >> > >> > >> Yann Seznec wrote on 27/10/2020 19:01: > >>> Hello everyone, > >>> As a follow up to my post a few weeks ago about startup times on > >>> Raspberry Pi, I have been exploring Tiny Core Linux (v9) on a Pi 3. > >>> Generally speaking this is super promising, with startup times around 15 > >>> seconds and it seems very stable. > >>> Some of the things I want to run on this system require external > >>> libraries. I have managed to get zexy working, for example, by simply > >>> including the library in the same folder as the patch that uses it. > >>> I have not had the same success with comport. Including a linux build of > >>> the comport object in the folder with the project does not work - I get a > >>> “couldn’t create” error when I launch the patch. I have tried declaring > >>> the library with the -lib flag, but that gives me an error saying > >>> “comport: can’t load library”. > >>> I have installed the USB-Serial extension, though I’m not sure if I’ve > >>> missed a step there to make it work properly. > >>> This feels like a long shot, but has anyone managed to get comport > >>> working on Tiny Core Linux? > >>> Alternatively, has anyone used USB MIDI with Tiny Core Linux? That isn’t > >>> working for me either. > >>> As usual, any tips would be excellent, many thanks. > >>> Yann > >>> _______________________________________________ > >>> Pd-list@lists.iem.at <mailto:Pd-list@lists.iem.at> mailing list > >>> UNSUBSCRIBE and account-management -> > >>> https://lists.puredata.info/listinfo/pd-list > >>> <https://lists.puredata.info/listinfo/pd-list> > > > > > > _______________________________________________ > Pd-list@lists.iem.at <mailto:Pd-list@lists.iem.at> mailing list > UNSUBSCRIBE and account-management -> > https://lists.puredata.info/listinfo/pd-list > <https://lists.puredata.info/listinfo/pd-list>
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