Update README.md

Author: dibyendumajumdar

build/README.md

@@ -1,79 +1,31 @@
 # Build instructions
 
 * Very simple build scripts are in https://github.com/dibyendumajumdar/ravi-distro/tree/master/build.
-* If you wish to manually build then below are some details.
 
 ### External dependencies
 
-* BLAS and LAPACK libraries are needed. 
+* BLAS and LAPACK libraries
+* OpenSSL library
+* libuv library
 * CMake is used as the build system
 
-#### Installing BLAS / LAPACK on Ubuntu 16.x
+#### Ubuntu
 
-For information on how to install and configure BLAS and LAPACK refer to information at [DebianScience Wiki](http://wiki.debian.org/DebianScience/LinearAlgebraLibraries).
+Have a look at the [Dockerfile](https://github.com/dibyendumajumdar/Suravi/blob/master/Dockerfile).
 
-Install OpenBLAS as follows:
-```
-  sudo apt-get install libopenblas-dev
-```
-Above should also install LAPACK.
-Configure OpenBLAS to be the default BLAS as follows:
-```
-  sudo update-alternatives --config libblas.so.3
-  sudo update-alternatives --config liblapack.so.3
-```
-
-#### Install BLAS and LAPACK on Windows 10
-
-On Windows you can use pre-built libraries I provide in ravi-external-libs project.
-
-### Build process
-
-This is manual at present.
-
-* Decide on the home folder for the distro. The distro assumes the following locations for these, if you change these then you will need to amend the `FindLua.cmake` scripts in all the projects.
-  - `c:/Software/lua53` or `c:/Software/ravi` on Windows
-  - `~/lua53` or `~/ravi` on Unix systems
+#### Windows 10
 
+* Decide on the home folder for the distro. Edit the build script to relect your choice.
 * Clone the respository and update the submodules.
-```
-git clone https://github.com/dibyendumajumdar/Suravi.git
-cd Suravi
-git submodule update --init --recursive
-```
 
-* Install Lua 5.3 or Ravi first. Ensure that `-DCMAKE_INSTALL_PREFIX` is defined as above. If you did not use the default location above then you will need to amend the `FindLua.cmake` scripts in all the projects.
-
-For example, on Ubuntu, follow these steps to build and install Ravi.
-But first, in case you don't have readline installed:
-```
-sudo apt-get install libreadline6 libreadline6-dev
 ```
-Here we will build Ravi without LLVM:
+git clone --recurse-submodules https://github.com/dibyendumajumdar/Suravi.git
 ```
-cd ravi-distro/ravi
-mkdir build
-cd build
-cmake -DCMAKE_INSTALL_PREFIX=$HOME/ravi ..
-make
-make install
-```  
 
-* Install the ravi-external-libs project if you are on Windows. You can also install this project on Linux or Mac OSX; on
-those platforms it simply installs an environment script.
+* Run the appropriate build script.
 
 ### Setup environment
 
-Set environment variables appropriately for locating the distro. You will need to set:
-
-- `PATH` on all platforms
-- `LD_LIBRARY_PATH` on Linux 
-- `DYLD_LIBRARY_PATH` on Mac OSX
-- `LUA_PATH` and `LUA_CPATH` on all Platforms
-
-In the examples below, replace 'ravi' with 'lua53' for Lua based installation.
-
-Note that the ravi-external-libs project installs 'ravienv.sh' and 'luaenv.sh' scripts that essentially do below.
-
+Set environment variables appropriately for locating the distro by invoking the provided `*env` script in the installation bin directory.