Raion at 04:19, 17 November 2025

2025-11-17T04:19:54Z

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-The GNU Compiler Collection is officially supported on IRIX through GCC 4.7. Unofficial support by various groups has resulted in versions as high as 9.5 being successfully built.
+The GNU Compiler Collection is officially supported on [[IRIX 6.5]] through GCC 4.7. Unofficial support by various groups has resulted in versions as high as 15.x being successfully built.
-Officially Supported Versions
+GCC support for IRIX 6.5 was maintained through the 4.7 branch, after which the maintainer removed it due to IRIX's discontinuation and obsolescence.
-GCC 3.4.6 is in the Nekoware collection, and is one of the older versions to survive linkrot. GCC 3.3 was distributed via SGI freeware. 4.x versions include 4.6.3 in Nekomimiware (A play on Nekoware's name), and GCC 4.7.1 is packaged by Nekoware as well. An older version supported GNAT and GNU Java (4.4.x)
+== Caveats with GCC ==
-Unofficial Versions
+* GCC on IRIX uses the [[Itanium]] C++ ABI, which is both incompatible with libC.so (SGI's C++ library) and object files generated by CC/MIPSPro, including Viewkit, libFAM, and other system libraries. This complicates building on GCC and necessitates C++ library reduplication.
-GCC 4.7.4 is cross-compilable as is 8.2 and 9.2 (via SGUG RSE). Raion has made GCC 6.5.0 with C, C++ and Fortran available with fixes applied to improve the compiler. He also released an experimental GCC 9.5.0 in February of 2025.
+== Known Distributions ==

Raion: Created page with "The GNU Compiler Collection is officially supported on IRIX through GCC 4.7. Unofficial support by various groups has resulted in versions as high as 9.5 being successfully built. Officially Supported Versions GCC 3.4.6 is in the Nekoware collection, and is one of the older versions to survive linkrot. GCC 3.3 was distributed via SGI freeware. 4.x versions include 4.6.3 in Nekomimiware (A play on Nekoware's name), and GCC 4.7.1 is packaged by Nekoware as well. An olde..."

2025-09-18T02:56:53Z

Created page with "The GNU Compiler Collection is officially supported on IRIX through GCC 4.7. Unofficial support by various groups has resulted in versions as high as 9.5 being successfully built. Officially Supported Versions GCC 3.4.6 is in the Nekoware collection, and is one of the older versions to survive linkrot. GCC 3.3 was distributed via SGI freeware. 4.x versions include 4.6.3 in Nekomimiware (A play on Nekoware's name), and GCC 4.7.1 is packaged by Nekoware as well. An olde..."

New page

The GNU Compiler Collection is officially supported on IRIX through GCC 4.7. Unofficial support by various groups has resulted in versions as high as 9.5 being successfully built.

Officially Supported Versions

GCC 3.4.6 is in the Nekoware collection, and is one of the older versions to survive linkrot. GCC 3.3 was distributed via SGI freeware. 4.x versions include 4.6.3 in Nekomimiware (A play on Nekoware's name), and GCC 4.7.1 is packaged by Nekoware as well. An older version supported GNAT and GNU Java (4.4.x)

Unofficial Versions

GCC 4.7.4 is cross-compilable as is 8.2 and 9.2 (via SGUG RSE). Raion has made GCC 6.5.0 with C, C++ and Fortran available with fixes applied to improve the compiler. He also released an experimental GCC 9.5.0 in February of 2025.

GCC 6.5.0 Build

A minimum compiler version of approximately GCC 4.4.x is required to build GCC 6.5.0 successfully on IRIX, this has not been thoroughly tested. Raion reports using GCC 4.7.4 with fixincludes applied to build IRIX.

Requirements:

GCC 4.4.x or later

GMP 6.x

MPC 1.x

MPFR 3.1.x

ISL 0.18 (for Graphite Loop Optimization.

Binutils 2.23.2 (Link to the prepatched code)

zlib 1.x

libffi version 3.3.1

Bash, any version for compiling GCC

star or libarchive tar or gnu tar to extract.

Build zlib and libffi into the prefix for GCC. Make sure they're in the search paths to get picked up.

Per the relnotes, build binutils with the specific commands.

Per the relnotes, prepare the build environment for GCC. Make sure the system ncargs are set appropriately as well. get into bash, set the env up, and run the build and checks.

### TEST RESULTS

=== gcc Summary ===

# of expected passes 81595
# of unexpected failures 470
# of unexpected successes 15
# of expected failures 171
# of unresolved testcases 17
# of unsupported tests 1806

Failures: https://pastebin.com/eKwMrgUT
=== g++ Summary ===

# of expected passes 93269
# of unexpected failures 14
# of expected failures 313
# of unsupported tests 4151

Failures: https://pastebin.com/mHunc8bD
=== libstdc++ Summary ===

# of expected passes 9471
# of unexpected failures 119
# of expected failures 66
# of unresolved testcases 2
# of unsupported tests 967

Failures: https://pastebin.com/a0vnnMQi
=== gfortran Summary ===

# of expected passes 42294
# of unexpected failures 124
# of expected failures 78
# of unsupported tests 97

Failures: https://pastebin.com/C30hwj0a

GCC 9.5.0 Build

A minimum compiler version of approximately GCC 4.6.x is required to build GCC 9.5.0 successfully on IRIX, this has not been thoroughly tested. Raion reports using GCC 6.5.0 with fixincludes applied to build IRIX.

Requirements:

GCC 4.4.x or later

GMP 6.x

MPC 1.0.x

MPFR 3.1.x

ISL 0.18 (for Graphite Loop Optimization.

Binutils 2.23.2 (Link to the prepatched code)

zlib 1.x

libffi version 3.3.1

Bash, any version for compiling GCC

star or libarchive tar or gnu tar to extract.

Raion's 9.5.0 Patch

Build zlib and libffi into the prefix for GCC. Make sure they're in the search paths to get picked up.

Per the 6.5.0 relnotes, build binutils with the specific commands.

Make sure the system ncargs are set appropriately as well. get into bash, set the env up, and run the build. Testsuites skipped for time reasons.

Seemed to work fine on first glance.

GCC - Revision history

Raion at 04:19, 17 November 2025