Follow these instructions to install the SimpleScalar tools on a Linux
system. These instructions were tested on a Redhat 8 system, and
should work as is for other installs. Let me know if you run into any
problems.

/* ------------------------  DOWNLOADING ------------------------- */

1. Create a target directory, which will serve as the root for your
   SimpleScalar tools. In these instructions, this directory will be
   referred to as "$IDIR" (you can set up an environment variable of
   the same name to use the following instructions without
   modification).

2. Download the following gzipped-tar files (from the course web site)
   into this directory:

	simplesim-3v0c.tgz
	simpletools-2v0-nyu.tgz
	simpleutils-2v0-nyu.tgz

3. Unpack these files (with $IDIR as your working directory) using the
   following command: "tar zxvf <filename.tgz>".

   You should now have the following subdirectories under $IDIR:

       binutils-2.5.2
       gcc-2.6.3
       simplesim-3.0
       ssbig-na-sstrix
       sslittle-na-sstrix


/* ---------------------- INSTALLATION --------------------------- */

The following instructions are for building a little-endian version of
the SimpleScalar tools. For the assignments in this course, this is
all that will be required.

1. First, build the GNU binary utilities:

       cd $IDIR/binutils-2.5.2
       ./configure --host=i386-*-gnu/linux --target=sslittle-na-sstrix
		   --with-gnu-as --with-gnu-ld --prefix=$IDIR
       make
       make install

2. Second, build the SimpleScalar simulator itself (this is required
   for the gcc cross-compiler installation in Step 3 below):

       cd $IDIR/simplesim-3.0
       make config-pisa
       make

3. Third, build the GNU gcc cross-compiler. This compiler will produce
   PISA executables from C code, which you can then simulate using the
   SimpleScalar simulators (and the ones you will build as part of
   this course):

       cd $IDIR/gcc-2.6.3
       ./configure --host=i386-*-gnu/linux --target=sslittle-na-sstrix
		   --with-gnu-as --with-gnu-ld --prefix=$IDIR
       make LANGUAGES=c
       ../simplesim-3.0/sim-safe ./enquire -f > float.h-cross
       make install


At the end of this process, you will have the cross-compiler installed
under $IDIR/bin with the name "sslittle-na-sstrix-gcc". Make sure the
directory is in your path (or specify it explicitly) and you should be
all set to build PISA executables.