PACKAGE NAME:

neko_gcc6

SOURCE/VERSION:

gcc-6.5.0

DESCRIPTION:

The GNU Compiler Collection.  See http://gcc.gnu.org/ for more information.

Languages supported by this package: C, C++, Fortran in MIPSIV, multiib mode
Compiled with support for Graphite loop optimizations.

ENVIRONMENT VARIABLES:

Use bash, tcsh and ksh will break due to arg size. Used didbs for support shi due to
laziness, but 100% not required.
 
LD_LIBRARYN32_PATH=/opt/xeno/lib32:/usr/lib32:/usr/nekoware/gcc6/lib32:/opt/gcc/lib32:/lib32:/usr/lib32/internal/mozilla:/usr/didbs/lib32
CPPFLAGS=-I/opt/gcc/include -I/usr/nekoware/gcc6/include -I/usr/include
LD=/usr/nekoware/gcc6/bin/ld
AS=/usr/nekowar/gcc6/bin/as
PATH=/usr/didbs/bin:/opt/gcc/bin:/usr/nekoware/gcc6/bin:/usr/sbin:/usr/bsd:/sbin:/usr/bin:/bin:/etc:/usr/etc:/usr/bin/X11


BUILD PROCESS:

### Gather GCC Prerequisites
Before this, use a package that installs:

bash

gnu make

perl

gnu awk or neweoe awk

byacc

curl

schily tar (or gnu tar, you cannot use IRIX tar due to path limits!!!)

This guide won't cover them. 

### Set up an in-tree build. 

Using my helper script: http://contrib.irixnet.org/raion/gcc-patches-and-scripts/download_prereqs.sh place this in the GCC root 
, chmod +x check versions and run. Some GCCs require later versions. The ISL version I used is .18

DO NOT BUILD GMP/ISL/MPC/MPFR OUT OF TREE. This is how mistakes get made. Don't do it. 

## Install Prereq libraries

Install zlib. 

./configure --prefix=/usr/nekoware/gcc6 --libdir=/usr/nekoware/lib32
gmake
gmake install

Install libffi 
./configure --prefix=/usr/nekoware/gcc6 --libdir=/usr/nekoware/lib32
gmake 
gmake install

Install binutils (including gnu ld) (Download prepatched code:i http://contrib.irixnet.org/raion/gcc-prepatched/binutils-2.23.2.tar.gz )

./configure --prefix=/usr/nekoware/gcc6' '--libdir=/usr/nekoware/gcc6/lib32' '--enable-werror=no' \
'--disable-nls' '--disable-iconv' '--disable-gprof' '--with-system-zlib'
gmake
gmake install

### Patch GCC

cd /root (assuming gcc-6.5.0 is here)
patch -p1 < gcc-6.5.0-omnibus-irix.patch

### Set up GCC build directory
mkdir build-6 && cd build-6

### Configure, build, and install GCC

../gcc-6.5.0-irix/configure --prefix=/usr/nekoware/gcc6 --libdir=/usr/nekoware/lib32 --disable-silent-rules --with-system-zlib \
 --with-libffi=/usr/nekoware/gcc6 --disable-nls --enable-multilib --disable-bootstrap --enable-obsolete --enable-threads=posix \
--disable-lto --enable-static --enable-dynamic --enable-languages=c,c++,fortran
gmake
gmake install

Disabling nls unlinks gettext, bootstrap was found to be unnecessary (bootstrapped GCC 6.5.0 was used as master compiler), 
disable LTO due to global object table bug in gnu ld, and nobody ever used ObjectC/C++ on IRIX so
it was unneeded. 

### Test GCC
gmake check-gcc-c
gmake check-gcc-c++
gmake check-target-libstdc++-v3
gmake check-gcc-fortran


### Clean up
cd ../..
rm -rf build-6

### 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

ADA and Java not attempted -- not supported/no bootstrap available. 

libgo failure point: https://pastebin.com/dUrTrP3x -- had to disable werror in configure scripts. 

PATCHES/SOURCE:

Patch: http://contrib.irixnet.org/raion/gcc-patches-and-scripts/gcc-6.5.0-omnibus-irix.patch

Source (No Patch Required): http://contrib.irixnet.org/raion/gcc-prepatched/gcc-6.5.0-irix.tar.gz

KNOWN DEPENDENCIES:

none (prerequisites linked in statically)

INSTALLATION:

Set your LD_LIBRARYN32_PATH to include /usr/nekoware/gcc6/lib32. IT IS NOT A BUG. 

PACKAGED BY:

Kazuo Kuroi (Raion) at irixnet.org

Credits To:

Andrej Bukosek (andrej dot bukosek at gmail dot com) GCC 4.7.1 build and docs
Onre and Northsky at SGUG for advice, encouragement and documenting
Daniel Hams For didbs and previous GCC contributions on IRIX

All of my awesome friends at irixnet.org for helping my dumb ass make this possible