Some documentation updates for linux

doc/linux.t2t

@@ -230,10 +230,10 @@ sudo debi
 
 == A practical case: Building QGIS and GRASS from source on Ubuntu with ECW and MrSID formats support ==
 
-The following procedure has been tested on Ubuntu 8.04, 8.10 and 9.04 32bit. If you want 
-to use different versions of the software (gdal, grass, qgis), just make the 
-necessary adjustments to the following code. This guide assumes that you don't have 
-installed any previous version of gdal, grass and qgis.
+The following procedure has been tested on Ubuntu 8.04, 8.10 and 9.04 32bit. If
+you want to use different versions of the software (gdal, grass, qgis), just
+make the necessary adjustments to the following code. This guide assumes that
+you don't have installed any previous version of gdal, grass and qgis.
 
 ===  Step 1: install base packages === 
 
@@ -251,7 +251,7 @@ Go to the ERDAS web site http://www.erdas.com/ and follow the links
 then download the "'''Image Compression SDK Source Code 3.3'''" (you'll need to make a registration 
 and accept a license).
 
-Uncompress the arquive in a proper location (this guide assumes 
+Uncompress the archive in a proper location (this guide assumes 
 that all the downloaded source code will be placed in the user home) 
 and the enter the newly created folder
 
@@ -373,26 +373,35 @@ Before downloading and compile GRASS source code you need to install a few
 other libraries and programs. We can do this through apt
 
 ``` 
-sudo apt-get install flex bison libreadline5-dev libncurses5-dev lesstif2-dev debhelper dpatch libtiff4-dev \
-tcl8.4-dev tk8.4-dev fftw-dev xlibmesa-gl-dev libfreetype6-dev autoconf2.13 autotools-dev \
-libgdal1-dev proj libjpeg62-dev libpng12-dev libpq-dev unixodbc-dev doxygen fakeroot cmake \
-python-dev python-qt4-common python-qt4-dev python-sip4 python2.5-dev sip4 libglew1.5-dev libxmu6 \
-libqt4-dev libgsl0-dev python-qt4 swig python-wxversion python-wxgtk2.8 libwxgtk2.8-0 libwxbase2.8-0 tcl8.4-dev \
-tk8.4-dev tk8.4 libfftw3-dev libfftw3-3
+sudo apt-get install flex bison libreadline5-dev libncurses5-dev lesstif2-dev \
+debhelper dpatch libtiff4-dev tcl8.4-dev tk8.4-dev fftw-dev xlibmesa-gl-dev \
+libfreetype6-dev autoconf2.13 autotools-dev libgdal1-dev proj libjpeg62-dev \
+libpng12-dev libpq-dev unixodbc-dev doxygen fakeroot cmake python-dev \
+python-qt4-common python-qt4-dev python-sip4 python2.5-dev sip4 libglew1.5-dev \
+libxmu6 \ libqt4-dev libgsl0-dev python-qt4 swig python-wxversion \
+python-wxgtk2.8 libwxgtk2.8-0 libwxbase2.8-0 tcl8.4-dev tk8.4-dev tk8.4 \
+libfftw3-dev libfftw3-3
 ```
 
 At this point we can get the GRASS source code: you may want to download it
-through svn or maybe you want just to download the latest available source code arquive.
-For example the GRASS 6.4rc4 is available at http://grass.itc.it/grass64/source/grass-6.4.0RC4.tar.gz
+through svn or maybe you want just to download the latest available source code
+archive.  For example the GRASS 6.4rc4 is available at
+http://grass.itc.it/grass64/source/grass-6.4.0RC4.tar.gz
 
-Uncompress the arquive, enter the newly created folder and run configure with a few specific parameters
+Uncompress the archive, enter the newly created folder and run configure with a few specific parameters
 
 ``` 
-CFLAGS="-fexceptions" ./configure --with-tcltk-includes=/usr/include/tcl8.4 --with-proj-share=/usr/share/proj --with-gdal=/usr/local/bin/gdal-config \
+CFLAGS="-fexceptions" ./configure \
+--with-tcltk-includes=/usr/include/tcl8.4 \
+--with-proj-share=/usr/share/proj \
+--with-gdal=/usr/local/bin/gdal-config \
 --with-python=/usr/bin/python2.5-config
 ```
 
-The additional gcc option -fexceptions is necessary to enable exceptions support in GRASS libraries. It is currently the only way to avoid QGIS crashes if a fatal error happens in GRASS library. See also http://trac.osgeo.org/grass/ticket/869
+The additional gcc option -fexceptions is necessary to enable exceptions
+support in GRASS libraries. It is currently the only way to avoid QGIS crashes
+if a fatal error happens in GRASS library. See also
+http://trac.osgeo.org/grass/ticket/869
 
 Then as usual (it will take a while)
 
@@ -420,36 +429,24 @@ grass64 -wxpython
 ```
 
 
-=== Step 6: compile and install QGIS ===
+=== Step 6: Compile and install QGIS ===
 
-As for GRASS you can obtain the QGIS source code from different sources,
-for instance from svn or just by downloading one of the source code arquives available
-at http://www.qgis.org/download/sources.html
-
-For example download the QGIS 1.1.0 source code here http://download.osgeo.org/qgis/src/qgis_1.1.0.tar.gz
-
-uncompress the arquive and enter the newly created folder
+As for GRASS you can obtain the QGIS source code from different sources as described 
+in section 2 above. Once you have the sources, create a build directory in them:
 
 ``` 
-cd /qgis_1.1.0
+cd Quantum-GIS
+mkdir build
+cd build
 ```
 
 then run ccmake
 
 ``` 
-ccmake .
-```
-
-press the "c" key, then when the option list will appear we need to manually
-configure the "GRASS_PREFIX" parameter. Scroll down until the "GRASS_PREFIX" will appear, 
-press enter and manually set it to
-
-``` 
-/usr/local/grass-6.4.0RC4
+ccmake ..
 ```
 
-then press enter again.
-
+Press the "c" key to do an initial configure.
 Press the "c" again and the option "Press [g] to generate and exit" will appear.
 Press the "g" key to generate and exit.