Updated MSYS2 reduction instructions

1 files changed, 20 insertions, 9 deletions

diff --git a/Windows/MinGW+MSYS.md b/Windows/MinGW+MSYS.md
index d2f682a..1cc0def 100644
--- a/Windows/MinGW+MSYS.md
+++ b/Windows/MinGW+MSYS.md
@@ -3,25 +3,36 @@
 
 > MinGW provides the GCC compiler required to build the Ngspice executable.
 
-[Download MinGW (unmodified)](https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-builds/8.1.0/threads-posix/seh/x86_64-8.1.0-release-posix-seh-rt_v6-rev0.7z)\
-[Download MSYS (unmodified)](https://sourceforge.net/projects/mingw-w64/files/External%20binary%20packages%20%28Win64%20hosted%29/MSYS%20%2832-bit%29/MSYS-20111123.zip/download)
+> [Download MSYS2 (unmodified)](https://www.msys2.org/). Following packages are found to be required for building Ngspice and Verilator:
+
+    - $ pacman -S --needed base-devel mingw-w64-x86_64-toolchain
+
+      When prompted for the options, Select the one corresponding to ``mingw-w64-x86_64-gcc``
+
+    - $ pacman -S --needed mingw-w64-x86_64-python mingw-w64-x86_64-make
+    - $ pacman -S --needed mingw-w64-x86_64-dlfcn autoconf2.71
+
 
 **Reduced versions of MinGW and MSYS for NGHDL can be found in this repository under `sources/` folder.**
 
 ## Usage of MinGW + MSYS
-1. Add `/mingw64/bin/` and `/mingw64/msys/bin` to the path so that all the utilities are able to find each other.
+1. Add `/MSYS/usr/bin/` and `/MSYS/mingw64/bin` to the path so that all the utilities are able to find each other.
 2. Open Windows command prompt at the location you want to use `MinGW + MSYS`.
 3. Execute the command to launch `bash` provided by MSYS at this location.
   ```sh
-  > pathtoMSYS/bin/bash.exe
+  > pathtoMSYS/usr/bin/bash.exe
   ```
- 4. This comand launches bash in the CMD window which can then be used as `BASH shell`, with commands similar to Linux.
- 
- 
+4. This comand launches bash in the CMD window which can then be used as `BASH shell`, with commands similar to Linux.
+5. Note that this reduced version is not sufficient for building Ngspice and Verilator from their source codes.
+
+
 ## Reduction of MinGW + MSYS
 > Originally MinGW and MSYS are provided for a large variety of development scenarios which are not required by NGHDL, causing size overheads in the final distribution.
 
 1. To remove unrequired parts of MSYS and MinGW, a trial and error based approach is to be followed.
 
-2. To start, both utilities should be reduced to the bare minimum required components which can be noted by studying the Ngspice configure file `(/ngspice/configure)`.
-The rest of the utilities are to added by accessing the errors in the logs provided during the configure-make-make install process.
+2. To start with, the packages listed above can work as the base for the reduction.
+
+3. Both utilities should be reduced to the bare minimum required components which can be noted by studying the Ngspice configure file `(/ngspice/configure)`.
+
+4. The rest of the utilities are to added by accessing the errors in the logs provided during the ``configure``-``make``-``make install`` process. Similar can be done for Verilator as well.