Installing GEMS step-by-step

System is Ubuntu 9.04 64-bits. The compiler version used is the recommended gcc 3.4.1.

Create a GEMS directory:

mkdir ~/GEMS

Copy all the downloaded GEMS files into the GEMS directory. Now edit the .bashrc file and add the following:

GEMS=$HOME/GEMS

export SIMICS_INSTALL=/opt/virtutech/simics-3.0.31

export SIMICS_EXTRA_LIB=./modules

export PYTHONPATH=./modules

Restart the computer.

Now create a simics workspace:

cd $SIMICS_INSTALL/bin

./workspace-setup $GEMS/simics_workspace

Edit GEMS/scripts/makesymlinks.h to include the correct $SIMICS_INSTALL path:

echo "Making symlink for import directory.."

ln -s /opt/virtutech/simics-3.0.31/import import

Run makesymlinks from the simics workspace:

cd ~/GEMS/simics_workspace

../scripts/makesymlinks.h

Link your simics workspace to $GEMS/simics:

cd $GEMS

ln -s simics_workspace simics

Edit GEMS makefiles:

1) $GEMS/common/Makefile.common

A) Modify the CC for your chosen compiler to 3.4.1, only for amd64-linux, and the path to gcc

B) Set value to HOST_TYPE directly: HOST_TYPE=amd64-linux

C) After line ifeq ($(SIMICS_VERSION),3.0) modify lines:

SIMICS_ROOT := $(GEMS_ROOT)/simics

SIMICS_INCLUDE_ROOT := $(SIMICS_INSTALL)/src/include

2) $GEMS/ruby/module/Makefile

A) Modify the CC_version and the path to gcc

B) Set value to HOST_TYPE directly: HOST_TYPE=amd64-linux

3) $GEMS/opal/module/Makefile

A) Modify the CC_version and the path to gcc

B) Set value to HOST_TYPE directly: HOST_TYPE=amd64-linux

4) $GEMS/tourmaline/module/Makefile

A) Modify the CC_version and the path to gcc

B) Set value to HOST_TYPE directly: HOST_TYPE=amd64-linux

Now it's time to compile ruby:

cd $GEMS/ruby

make PROTOCOL=MOSI_SMP_bcast DESTINATION=MOSI_SMP_bcast

Next compile opal:

cd $GEMS/opal

make module DESTINATION=MOSI_SMP_bcast

Building gcc-3.4.1 on Ubuntu 9.04 64-bits

Download gcc:

http://mirrors.kernel.org/gnu/gcc/gcc-3.4.1/gcc-3.4.1.tar.bz2

Create a source and object directory:

mkdir srcgcc

mkdir objgcc

Extract the source files into the source directory, then go to the object directory to configure your build:

cd objgcc

make distclean; CFLAGS=-m64; CC=gcc; ../srcgcc/gcc-3.4.1/configure --prefix=/opt/gcc-3.4.1/ --disable-multilib --enable-languages=c,c++

In the above command the target directory is /opt/gcc-3.4.1. If you run into permission issues, make sure you own the target directory:

sudo chown gbezerra /opt/gcc-3.4.1

Now compile gcc:

make bootstrap

Finally install it:

sudo make install