Update build instructions

BUILD_LINUX.md

@@ -2,6 +2,7 @@
 
 ## Requirements
 
+* Autotools
 * GCC 5.0+
 * SDL 2.0.8+
 * SDL_image 2.0.0+
@@ -11,8 +12,6 @@
 * libsamplerate (optional)
 * zlib (optional)
 
-If you cloned the code from the GitHub repo you also need the GNU Autotools.
-
 You need libarchive if you want to use zipped ROM sets.
 
 Without libsamplerate the PC Speaker will not emit any sound and other audio 
@@ -21,7 +20,7 @@ sources will not be played unless they are at the same rate as the mixer.
 Without zlib the ZMBV compressed video capture format will not work.
 
 ## General instructions
-If you cloned the code from GitHub run:  
+First of all run:  
 ```
 $ autoreconf --install
 ```
@@ -32,21 +31,91 @@ $ ./configure --with-librocket-prefix=PATH/TO/LIBROCKET
 $ make  
 $ make install
 ```  
-Use './configure --help' to read the various compilation options.
+Use `./configure --help` to read the various compilation options.
 
-You can omit the --with-librocket-prefix if you installed libRocket has a
+You can omit the `--with-librocket-prefix` if you installed libRocket has a
 system library.
 
 Any missing library will be pointed out; use your distributon's software
 manager to install them (except libRocket, see notes below).
 
 ### libRocket
 
-libRocket is a C++ user interface package based on the HTML and CSS standards.  
+libRocket is a C++ user interface package based on the HTML and CSS standards.
+
+To compile libRocket you'll need cmake and libfreetype.
+
 IBMulator needs various fixes so use the version from my repository.  
 ```
-$ git clone https://github.com/barotto/libRocket.git  
-$ cd libRocket/Build  
-$ cmake -G "Unix Makefiles"  
+$ git clone https://github.com/barotto/libRocket.git
+$ cd libRocket/Build
+$ cmake -G "Unix Makefiles"
 $ make
 ```
+
+## Statically linked version
+
+Static linking is totally unsupported on Linux.  
+Just follow the previous instructions and compile with dynamic linking.
+
+This procedure works only on my Ubuntu system with some library recompiled.
+I'll keep these notes here only for my reference and convenience.
+
+**NOTE:** libSDL2 will always be linked dynamically.
+
+Needed libs:
+
+* libtiff
+* libjpeg
+* libwebp
+* liblzma
+* libjbig
+* libzstd
+* libharfbuzz
+* libbz2
+* liblzo2
+* libfreetype6
+
+```
+$ sudo apt install libtiff-dev libjpeg-dev libwebp-dev liblzma-dev libjbig-dev \
+libzstd-dev libharfbuzz-dev libbz2-dev liblzo2-dev libfreetype6-dev
+```
+
+Compile libarchive with lot of stuff removed:
+```
+$ git clone https://github.com/libarchive/libarchive.git  
+$ cd libarchive
+$ ./configure --without-bz2lib --without-libb2 --without-iconv --without-lz4 \
+--without-zstd --without-lzma --with-lzo2 --without-cng --without-nettle \
+--without-openssl --without-xml2 --without-expat \
+--prefix=/home/marco/workspace/libarchive/release
+$ make -j24  
+$ make install
+```
+
+Compile GLEW:
+```
+$ git clone https://github.com/nigels-com/glew.git  
+$ cd glew/build/cmake  
+$ ccmake  
+$ make -j24  
+$ make install
+```
+
+Compile libRocket with the static lib option enabled:
+```
+$ cd libRocket/Build/  
+$ cmake -G "Unix Makefiles" -DBUILD_SHARED_LIBS=OFF -DCMAKE_BUILD_TYPE=Release \
+-DCMAKE_INSTALL_PREFIX:PATH=/home/marco/workspace/libRocket/release
+$ make -j24  
+$ make install
+```
+
+Configure IBMulator:
+```
+$ ./configure --prefix=/home/marco/workspace/IBMulator/release \
+--enable-static --disable-sdltest \
+--with-librocket-prefix=/home/marco/workspace/libRocket/release \
+--with-glew-prefix=/home/marco/workspace/glew/release \
+--with-libarchive-prefix=/home/marco/workspace/libarchive/release
+```

BUILD_WINDOWS.md

@@ -17,14 +17,11 @@ clicking the right mouse button and choosing 'paste'.
 We will use mingw-w64 (mingw-w64.org) under **MSYS2** (www.msys2.org)
 
 1. Go to the [MSYS2 website](http://www.msys2.org), download the x86_64 package
-and follow its install instructions.
-2. Open the **MSYS2 MSYS** shell and using the package manager `pacman`:    
-install the toolchain:  
-`pacman -S mingw-w64-x86_64-binutils mingw-w64-x86_64-gcc`  
-install cmake, make, Autotools, and git:  
-`pacman -S mingw-w64-x86_64-cmake mingw-w64-x86_64-pkg-config make pkgconfig autoconf automake libtool git`  
-3. Install the libraries needed by libRocket and IBMulator  
-`pacman -S mingw-w64-x86_64-SDL2 mingw-w64-x86_64-SDL2_image mingw-w64-x86_64-glew mingw-w64-x86_64-libsamplerate mingw-w64-x86_64-libarchive mingw-w64-x86_64-freetype`
+and follow its installation instructions.
+2. Open the **MSYS2 MSYS** shell and install the toolchain:  
+`pacman -S mingw-w64-x86_64-binutils mingw-w64-x86_64-gcc mingw-w64-x86_64-cmake mingw-w64-x86_64-pkg-config make pkgconfig autoconf automake libtool git`
+3. Install the libraries needed by libRocket and IBMulator:  
+`pacman -S mingw-w64-x86_64-SDL2 mingw-w64-x86_64-SDL2_image mingw-w64-x86_64-glew mingw-w64-x86_64-libsamplerate mingw-w64-x86_64-libarchive mingw-w64-x86_64-freetype mingw-w64-x86_64-lzo2`
 
 You can compile IBMulator with dynamic or static linking; see
 [below](#installation) for more info on the two versions. I suggest static
@@ -48,8 +45,8 @@ line) and:
 4. Create the Makefile with cmake:  
 `cmake -G"MSYS Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/mingw64/x86_64-w64-mingw32`  
 for static linking add `-DBUILD_SHARED_LIBS=OFF`
-5. Build and install (change the 4 with the number of your CPU's cores):  
-`make -j4 && make install`
+5. Build and install (change the 8 with the number of your CPU's cores):  
+`make -j8 && make install`
 
 
 ## STEP 3. Build IBMulator
@@ -68,17 +65,19 @@ Open the **MSYS2 MinGW 64-bit** shell and:
 for static linking add `--enable-static`  
 use the `--help` option to see the available build options;  
 use the `--prefix` option to install the program with all its assets inside a
-folder of your choosing (see [below](#installation) for more info).
+folder of your choosing (see [below](#installation) for more info).  
+Example:
+`./configure --prefix=/c/workspace/IBMulator/release --enable-static`
 6. Build:  
-`make -j4`
+`make -j8`
 7. Install if you used the `--prefix` option:  
 `make install`
 
 
 ### Installation
 In order to use the program you'll need to "install" it. The install process is
-not a Windows program installation. Its purpose is to organize executables and
-assets inside a folder from which the program can run. 
+not a Windows program installation. Its purpose is to organize the executable and
+its assets inside a folder from which the program can run. 
 
 This is the needed directory structure:
 
@@ -121,6 +120,10 @@ Variables.
 #### option 2: copy the library files
 Copy the following DLLs inside IBMulator's `bin` folder.  
 
+**NOTE:** this list changes periodically depending on the current version of
+MSYS2/MinGW. You can use the Dependency Walker program to determine the up to
+date list of libraries.
+
 From C:\msys64\mingw64\bin:  
 
 ```
@@ -138,7 +141,6 @@ libintl-8.dll
 libjpeg-8.dll
 liblz4.dll
 liblzma-5.dll
-libnettle-6.dll
 libpcre-1.dll
 libpng16-16.dll
 libsamplerate-0.dll
@@ -160,10 +162,6 @@ libRocketCore.dll
 libRocketDebugger.dll
 ```
 
-**NOTE:** this list changes periodically depending on the current version of
-MSYS2/MinGW. You can use the Dependency Walker program to determine the up to
-date list of libraries.
-
 
 ## Debugging
 Install the GDB debugger: