GCC
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.
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.
