Re: [announce] pd 0.38-0test7 for IRIX

IOhannes m zmoelnig via Pd-list <[email protected]> Mon, 12 Jan 2026 11:10:19 +0100
Newsgroups	gmane.comp.multimedia.puredata.general
Message-ID	<[email protected]>
On 1/12/26 01:52, Wolfgang Gaggl wrote:
> ...it appears to solve some problems, I just need to post about them first ;)
> Problem solved: the endian logic in d_osc.c which is initially correctly defined in the first few lines of code, was overridden by yet another logic to determine HIOFFSET and LOWOFFSET for endianness.
> Works now, SGI Irix 6.5 with Pd 0.40, analog stereo audio, ADAT, Midi (even selectable from the GUI menu).

great to see you proceed.

in the meantime, i found an emulator for the SGI Indy [1], and tried to 
build the latest and greatest Pd (0.56-2), but I'm afraid I made less 
progress than you did...

the disk image has IRIX-6.5 (6.5.22 iirc) and came with a number of 
freeware tools installed, including gcc and autotools, so in theory it 
should have worked.

(in the meantime i've managed to complete break my disk, so the report 
below is from the top of my head and might be lacking some important 
details)

# autotools

unfortunately, the autotools version installed (no idea which version) 
was just too old.
this was easily circumvented by just running autoreconf on a modern 
machine and copy the generated files to the indy (the proper way would 
have been to do a "make dist" and copy the generated tarball)

# configure

the current configure script uses "grep -w", which is not available on 
IRIX-6.2 [2820]
this appears to be a minor issue (some tests will fail, that probably 
would have failed anyhow)
i simply ignored this, and i got some Makefiles

configure detected and used the installed 'gcc' (GCC 3.3! yay!)

# make

the generated Makefile uses some modern(?) GNU make trickery to set the 
WISHDEFINE and DEKEN_DEFINE makevars to some preprocessor macros, which 
the installed version of 'make' didn't like.
i simply set these make variables to empty strings on the cmdline (`make 
WISHDEFINE="" DEKEN_DEFINE=""`) to bypass this.

also, the top-level makefile uses `make -C <path>` to build the various 
subprojects, which installed make did not understand.
i simply ignored this and ran 'make' directly in src/

probably running 'gmake' instead of 'make' would have fixed both issues.

# source: endianness detection

the current code to detect endianness did not work (as you discovered).
with newer versions of Pd, all the endianness detection code is now in 
m_private_utils.h, so I fixed it there.

# source: C99
with the above, I managed to build all of src/, with the notable 
exception of src/x_vexp_fun.c
[expr] uses C99 features (like 'isnan()' [79865015]), and this is where 
my adventure ended.
- the installed gcc is apparently C99-capable, but the header files on 
the system (math.h!) are specific to the MIPSpro compiler (using some 
private `__generic` macro that is not available on gcc)
- the installed MIPSpro C compiler (which also supports C99) warns a lot 
about missing licenses, but this can be ignored. unfortunately, the disk 
image lacks the actual backend compiler /usr/lib32/cmplrs/fec, so the 
MIPSpro compiler is not usable.
funnily, the MIPSpro C++ compiler (using /usr/lib32/cmplrs/fecc as 
backend) did work.

this is where my little adventure ended: i tried to (re)install some 
packages that should provide the (MIPSpro) C-compiler, but this 
uninstalled half of the system and now it doesn't boot any more.

I didn't try to build Pd with the c++ compiler (as this typically does 
not work), and now it's too late to try...

of course, even if i did manage to compile, the audio backend for the 
SGI had been removed for the Pd-0.41; but I guess it would be possible 
to ressurect it from the release history

fmdasdr
IOhannes


[1] https://forums.irixnet.org/thread-4081.html
[2820] https://github.com/pure-data/pure-data/issues/2820
[79865015] https://stackoverflow.com/questions/79865015

-- 
please do not CC me for list-emails

---
[email protected] - the Pure Data mailinglist
https://lists.iem.at/hyperkitty/list/[email protected]/message/Y23IOAL2FC2LTEYU6UT6D6C3VRVQNSA5/

To unsubscribe send an email to [email protected] mailing list
UNSUBSCRIBE and account-management -> https://lists.iem.at/
OpenPGP_signature.asc (application/pgp-signature, 840 B)