[PATCH] Introduction of HACKING file in phonesim

[Naresh Mehta <nareshtechs@gmail.com>]

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Signed-off-by: Naresh Mehta <nareshtechs@gmail.com>
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+Hacking on phonesim
+*******************
+
+phonesim is a soft modem that eliminates the need to have an actual AT
+modem connected to the system for testing and developing Ofono.
+
+Build tools requirements
+========================
+
+When building and testing directly from the repository it is important to
+have at least automake version 1.10 or later installed. All modern
+distributions should default to the latest version, but it seems that
+Debian's default is still an earlier version:
+
+  Check version
+    # dpkg -l '*automake*'
+
+  Install new version
+    # apt-get install automake1.10
+    # update-alternatives --config automake
+
+QT development libraries (libqt4-dev) are also required for building
+phonesim. It is recommended to install the QT 4 development tools package
+(qt4-dev-tools) as an alternative if available with your distribution.
+
+Working with the source code repository
+=======================================
+
+The repository contains two extra scripts that accomplish the bootstrap
+process. One is called "bootstrap" which is the basic scripts that uses the
+autotools scripts to create the needed files for building and installing.
+It makes sure to call the right programs depending on the usage of shared or
+static libraries or translations etc.
+
+The second program is called "bootstrap-configure". This program will make
+sure to properly clean the repository, call the "bootstrap" script and then
+call configure with proper settings for development. It will use the best
+options and pass them over to configure. These options normally include
+the enabling the maintainer mode and the debugging features.
+
+So while in a normal source project the call "./configure ..." is used to
+configure the project with its settings like prefix and extra options. In
+case of bare repositories call "./bootstrap-configure" and it will bootstrap
+the repository and calls configure with all the correct options to make
+development easier.
+
+In case of preparing for a release with "make distcheck", don't use
+bootstrap-configure since it could export development specific settings.
+
+So the normal steps to checkout, build and install such a repository is
+like this:
+
+  Checkout repository
+    # git clone git://git.kernel.org/pub/scm/network/ofono/phonesim.git
+    # cd phonesim
+
+  Configure and build
+    # ./bootstrap-configure
+    # make
+
+  Check installation
+    # make install DESTDIR=$PWD/x
+    # find x
+    # rm -rf x
+
+  Check distribution
+    # make distcheck
+
+  Final installation
+    # sudo make install
+
+  Remove autogenerated files
+    # make maintainer-clean
+
+
+Running from within the source code repository
+==============================================
+
+When using "./configure --enable-maintainer-mode" the automake scripts will
+use the plugins directly from within the repository. This removes the need
+to use "make install" when testing "phonesim". The "bootstrap-configure"
+automatically includes this option.
+
+  Run phonesim in foreground using the following options
+    # ./src/phonesim -p 12345 -gui xml/default.xml
+
+Check your modem.conf file and enable the phonesim configuration before
+executing the above command. Argument -p should be followed by the proper
+port number, in case you have changed the default "12345". Argument -gui
+will launch the gui once the modem is enabled.
+
+To enable the modem, make sure the ofono daemon is running and execute the
+enable-modem script with /phonesim argument (default defined in modem.conf,
+change if changes to that section has been made). The AT chat can then
+be seen in the GUI window. Running the script disable-modem with /phonesim
+argument will turn off the soft modem.
+
+The default.xml can be tweaked further to include additional AT-Commands and
+supposed responses from the soft modem.
+
+For production installations or distribution packaging it is important that
+the "--enable-maintainer-mode" option is NOT used.
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