Discrepancies between building with gcc 8 on my Origin 350 vs Octodad

Unxmaal · Jul 23, 2019

NOTE: This turned out to be a systemic issue with my personal Origin 350. It does not manifest on Octodad, which is the same type of hardware.

For troubleshooting, I have performed the following steps:

Installed 6.5.30 via booterizer about 2 weeks ago, which installs this media: https://github.com/unxmaal/booterizer/blob/master/irix.6.5.30.yml
Deleted /opt/local
Deleted ~/projects/irixports
From inst, uninstalled gnutoolchain tardist
Extracted irix-optlocal.tar.gz into /
git cloned irixports
Ran irixports/bootstrap.sh as root (which installs gnutoolchain tardist)

Quick example is gperf:

C:

/opt/local/gcc-8.2.0/bin/g++ -g -O2 -I. -I./../lib -c ./search.cc
In file included from /opt/local/gcc-8.2.0/include/c++/8.2.0/math.h:36,
                 from ./search.cc:28:
/opt/local/gcc-8.2.0/include/c++/8.2.0/cmath: In function 'constexpr int std::fpclassify(float)':
/opt/local/gcc-8.2.0/include/c++/8.2.0/cmath:538:33: error: 'FP_NAN' was not declared in this scope
   { return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL,
                                 ^~~~~~
/opt/local/gcc-8.2.0/include/c++/8.2.0/cmath:538:41: error: 'FP_INFINITE' was not declared in this scope
   { return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL,
                                         ^~~~~~~~~~~
/opt/local/gcc-8.2.0/include/c++/8.2.0/cmath:538:54: error: 'FP_NORMAL' was not declared in this scope
   { return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL,
                                                      ^~~~~~~~~
/opt/local/gcc-8.2.0/include/c++/8.2.0/cmath:539:5: error: 'FP_SUBNORMAL' was not declared in this scope
     FP_SUBNORMAL, FP_ZERO, __x); }
     ^~~~~~~~~~~~
/opt/local/gcc-8.2.0/include/c++/8.2.0/cmath:539:19: error: 'FP_ZERO' was not declared in this scope
     FP_SUBNORMAL, FP_ZERO, __x); }
                   ^~~~~~~
/opt/local/gcc-8.2.0/bin/g++ -g -O2 -I. -I./../lib -c ./output.cc
/opt/local/gcc-8.2.0/include/c++/8.2.0/cmath:539:19: note: suggested alternative: 'FD_ZERO'
     FP_SUBNORMAL, FP_ZERO, __x); }
                   ^~~~~~~
                   FD_ZERO

Any ideas?

onre · Jul 23, 2019

Mhm. Sounds like an old toolchain. I really regret I didn't version it better so it'd be easy to see which version you're using. At some point I figured it did not make C99 math symbols available on C++ side and fixed that, but I can't remember which tarballs have or don't have this.

Unxmaal · Jul 23, 2019

onre said:
Mhm. Sounds like an old toolchain. I really regret I didn't version it better so it'd be easy to see which version you're using. At some point I figured it did not make C99 math symbols available on C++ side and fixed that, but I can't remember which tarballs have or don't have this.

I've uninstalled and reinstalled a fresh copy of gnutoolchain-0.1-01-irix-6.5-mips.tardist and still receive these errors.

Unxmaal · Jul 23, 2019

I switched the compiler to gcc 4.7.4 and it worked.

However, this produces a gperf that fontconfig can't use.

The gcc file referenced is /opt/local/gcc-8.2.0/include/c++/8.2.0/cmath:

C:

#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
  constexpr int
  fpclassify(float __x)
  { return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL,
                                FP_SUBNORMAL, FP_ZERO, __x); }

  constexpr int
  fpclassify(double __x)
  { return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL,
                                FP_SUBNORMAL, FP_ZERO, __x); }

  constexpr int
  fpclassify(long double __x)
  { return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL,
                                FP_SUBNORMAL, FP_ZERO, __x); }
#endif

I can see FP_NAN and pals defined in lib/gcc/mips-sgi-irix6.5/8.2.0/include-fixed/internal/math_core.h:

Code:

/* C99: 7.12 6 defines for floating point classification */

#define   FP_ZERO          1
#define   FP_SUBNORMAL     2
#define   FP_NORMAL        4
#define   FP_INFINITE      8
#define   FP_NAN           16

Any other ideas for this?

Unxmaal · Jul 29, 2019

Updated title and details to clarify what is happening.

hammy · Jul 29, 2019

At a guess, one of those compilers has extra "internal defines" - that is activating (or not) sections of include files.

Try getting each of those compilers to spit out the pre-processed file contents (-E) and then diff 'em.

Looking at /usr/include/internal/math_core.h - FP_NAN is hidden behind #ifdef __c99.

Unxmaal · Jul 30, 2019

I powered up my O2, git cloned irixports, ran the bootstrap.

I tried compiling gperf first thing, and saw the same errors.

@hammy I ran gcc -c -save-temps search.cc on both octodad and my o2.

Here's a gist of the diff between the "known good" from octodad on the left, and the failed from the o2 on the right.

search.cc_diff

search.cc_diff. GitHub Gist: instantly share code, notes, and snippets.

gist.github.com

It sure seems like Octo has more "stuff" than my O2 (or my Origin 350 for that matter).

Unxmaal · Aug 4, 2019

I wiped and reinstalled my O2. I'm still unable to compile gperf without getting this same math error.

This time I

installed only the items listed in the selections file below
created an 'ansible' non-root user
FTP'd https://esp.iki.fi/irix-optlocal.tgz to the O2
extracted irix-optlocal.tar.gz to /
As ansible user, git cloned https://github.com/unxmaal/irixports.git
As root, ran ~ansible/irixports/bootstrap.sh
As ansible user, git checkout gperf
Ran ./package.sh

Somehow I'm either installing the wrong thing or I'm not installing everything.

What's missing?

The "selections" file:

Bash:

# Overlay
from 192.168.0.99:6.5.30/Overlay/disc1/dist
from 192.168.0.99:6.5.30/Overlay/disc2/dist
from 192.168.0.99:6.5.30/Overlay/disc3/dist
# Foundation
from 192.168.0.99:Foundation/disc1/dist
from 192.168.0.99:Foundation/disc2/dist
# Development
from 192.168.0.99:Development/devfoundations/dist
from 192.168.0.99:Development/devlibs/dist
# NFS
from 192.168.0.99:Foundation/nfs/dist
# Apps
from 192.168.0.99:6.5.30/Overlay/apps/dist
from 192.168.0.99:6.5.30/Overlay/capps/dist
# MIPSpro
from 192.168.0.99:Development/prodev/dist
from 192.168.0.99:Development/mipspro/dist
from 192.168.0.99:Development/mipspro_update/dist
from 192.168.0.99:Development/mipspro_c/CDROM/dist
from 192.168.0.99:Development/mipspro_cee/dist
from 192.168.0.99:Development/mipspro_cpp/dist
from 192.168.0.99:Development/mipspro_ap/dist
# Extras
from 192.168.0.99:Extras/perfcopilot/dist

Octodad has the following extra items installed:

Bash:

I  c++_dev.sw64         06/27/2019  C++ Software
I  c++_dev.sw64.lib     06/27/2019  C++ Libraries 64bit
I  c++_dev              09/25/2017  C++ Headers and Libraries, 7.2.1
I  c++_dev.books        09/25/2017  C++ IRIS InSight Books
I  c++_dev.books.Tlshh_RG  09/25/2017  Tools.h++ Class Reference
I  c++_dev.books.Tlshh_UG  09/25/2017  Tools.h++ User's Guide

I  c_dev.sw             06/27/2019  C Software
I  c_dev.sw.c           06/27/2019  C Driver
I  c_dev.sw.util        06/27/2019  C Utilities
I  c_dev                09/25/2017  C Headers and Libraries, 7.2.1
I  c_dev.hdr            09/25/2017  C Headers
I  c_dev.hdr.lib        09/25/2017  C Library Headers

Note the 'C Software' above is different than the 7.4.4m software.

Here's a recursive diff of my /opt/local/gcc-8.2.0 vs Octodad's:

my gcc8.2.0 vs octodad's

my gcc8.2.0 vs octodad's . GitHub Gist: instantly share code, notes, and snippets.

gist.github.com

Here's a recursive diff of my /usr/includes vs Octodad's

Code:

ansible@IRIS ~ $ diff -r /usr/include ./usr/include
diff: ./usr/include/Mrm: No such file or directory
diff: ./usr/include/Sgm: No such file or directory
diff: ./usr/include/Vk: No such file or directory
diff: ./usr/include/X11/Mrm: No such file or directory
diff: ./usr/include/X11/Sgm: No such file or directory
diff: ./usr/include/X11/Xirisw: No such file or directory
diff: ./usr/include/X11/Xm: No such file or directory
diff: ./usr/include/X11/uil: No such file or directory
diff: ./usr/include/Xm: No such file or directory
Only in ./usr/include: cpuset.h
diff: ./usr/include/gl/feed.h: No such file or directory
Only in /usr/include/sys/fs: autofs.h
Only in /usr/include/sys/fs: autofs_prot.h
Only in /usr/include/sys/fs: lofs_info.h
Only in /usr/include/sys/fs: lofs_node.h
diff: ./usr/include/uil: No such file or directory

Unxmaal · Aug 4, 2019

I found that the section listed in the error is happening due to "__CORRECT_ISO_CPP11_MATH_H_PROTO_FP" not being defined.

I hand-jammed a define for that into the top of gcc 8's math.h, and now it compiles just fine.

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Discrepancies between building with gcc 8 on my Origin 350 vs Octodad

Unxmaal

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onre

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hammy

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search.cc_diff

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my gcc8.2.0 vs octodad's

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