1- Run this package https://sourceforge.net/projects/mingw/files/latest/download
2- When done, press Continue to get to the GUI Package installer
3- Add the following Packages
a. mingw32-base
b. mingw32-libexpat (dev and dll)
c. mingw32-libz (dev and dll)
d. msys-base
e. msys-expat (bin)
f. msys-wget (bin)
and click on Installation -> Apply Changes
4- Right-click on your "My Computer" or "This PC" icon and select "Properties".
5- Click on the "Advanced" tab, then on the "Environment Variables" button.
6- Edit your PATH variable and add this to the end: ";C:\MinGW\bin;C:\MinGW\MSYS\1.0\local\bin;C:\MinGW\MSYS\1.0\bin"
NOTE: Substitute <C:\MinGW> with the FULL absolute path name of the installation target directory you chose
7- While you're here, also Create a PKG_CONFIG_PATH variable and set it to: "C:\MinGW\mingw32\lib" so that pkg-config (installed later) can find the *.pc files.
8- Go to C:\MinGW\MSYS\1.0\etc and create a file called "fstab" with notepad
9- Edit the file and ensure that it contains one line which reads:
C:\MinGW /mingw
10- Ensure that there is at least one blank line at the bottom, below all of the entries that may exist, then save and close the file.

1- Download http://ftp.gnome.org/pub/gnome/binaries/win32/dependencies/pkg-config_0.26-1_win32.zip
2- Unzip it and copy the bin/pkg-config.exe file to c:\MinGW\bin
3- Download http://ftp.gnome.org/pub/gnome/binaries/win32/glib/2.28/glib_2.28.1-1_win32.zip
4- Unzip it and copy the bin/libglib-2.0-0.dll file to c:\MinGW\bin
5- Go to c:\MinGW\bin and copy libintl-8.dll to intl.dll

Ensure that the PKG_CONFIG_PATH environment variable has been created according to the instructions above

1- PCRE
a. Download ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.36.tar.gz
b. Run C:\MinGW\msys\1.0\msys.bat
c. Go to where you downloaded the file (e.g. "cd /C/Users/Mark/Downloads" )
d. tar -zxvf pcre-8.36.tar.gz
e. cd pcre-8.36
f. ./configure --disable-cpp --disable-shared -prefix=/C/mingw
g. make
h. make install

2- CURL
a. Download http://curl.haxx.se/download/curl-7.42.0.tar.gz
b. Run C:\MinGW\msys\1.0\msys.bat
c. Go to where you downloaded the file (e.g. "cd /C/Users/Mark/Downloads" )
d. tar -zxvf curl-7.42.0.tar.gz
e. cd curl-7.42.0
f. ./configure --disable-shared --disable-ldap -prefix=/C/mingw
g. make (note: if fails on line 3212 of url.c because trying to access member 'ntlm', see https://github.com/bagder/curl/issues/231 or use newer version of curl when available)
h. make install

3- LIBPNG
a. Download http://sourceforge.net/projects/libpng/files/libpng12/1.2.53/libpng-1.2.53.tar.gz/download
b. Run C:\MinGW\msys\1.0\msys.bat
c. Go to where you downloaded the file (e.g. "cd /C/Users/Mark/Downloads" )
d. tar -zxvf libpng-1.2.53.tar.gz
e. cd libpng-1.2.53
f. ./configure -prefix=/C/mingw
g. make
h. make install

4- JANSSON
a. Download http://www.digip.org/jansson/releases/jansson-2.7.tar.bz2
b. Run C:\MinGW\msys\1.0\msys.bat
c. Go to where you downloaded the file (e.g. "cd /C/Users/Mark/Downloads" )
d. bunzip2 -c jansson-2.7.tar.bz2 | tar xf -
e. cd jansson-2.7
f. ./configure -prefix=/C/mingw
g. make
h. make check
i. make install

5- Install SDL
a. Download http://libsdl.org/release/SDL2-devel-2.0.3-mingw.tar.gz and go into the SDL2-2.0.3\i686-w64-mingw32\ folder once extracted
b.Follow step #3 from https://users.cs.jmu.edu/bernstdh/web/common/help/cpp_mingw-sdl-setup.php , i.e.:
1. Copy the 4 .a files from the lib directory to the C:\MinGW\lib directory
2. Copy the SDL2 directory from the i686-w64-mingw32\include directory to the MinGW\include directory
c. SDL 2.0.3 may throw an error during compilation (see Empezar's post on page 2):
C:/MinGW/include/SDL2/SDL_platform.h:121:26: fatal error: winapifamily.h: No such file or directory #include <winapifamily.h>
If so, overwrite C:\MinGW\include\SDL2\SDL_platform.h with https://hg.libsdl.org/SDL/raw-file/e217ed463f25/include/SDL_platform.h

1- make sure you have git installed and run "git clone https://github.com/ezQuake/ezquake-source.git"
2- go to the ezquake-source directory and create a file called ".config" with the following:

CONFIG_WINDOWS=TRUE
CFLAGS=-m32 -O3 -g0 -D_DEBUG -D_WIN32_WINNT=0x0501 -D_WIN32_IE=0x0501 -D__USE_MINGW_ANSI_STDIO -DWITH_WINAMP
CC=mingw32-gcc
PCRE_CFLAGS=-DPCRE_STATIC
#PCRE_LIBS=/C:/MinGW/lib/libpcre.a
CURL_CFLAGS=-DCURL_STATICLIB
#CURL_LIBS=-lcurl
#CURL_LIBS=/C:/MinGW/lib/libcurl.a
SPEEX_LIBS=
#EXPAT_LIBS=/C:/MinGW/lib/libexpat.a
#ZLIB_LIBS=/C:/MinGW/lib/libz.a
SDL2_CFLAGS=-I/C:/MinGW/include/SDL2 -Dmain=SDL_main
SDL2_LIBS=/C:/MinGW/lib/libSDL2.a -lole32 -limm32 -lcomctl32 -lversion -loleaut32 -lmingw32 -lSDL2main -lSDL2 -mwindows
WINDRES=mingw32-windres
STRIP=mingw32-strip
LDFLAGS=-static -mwindows

3- make
4- "make strip" to remove debugging stuff and reduce the size of the binary by about 50%
5- copy the new ezquake.exe to your quake folder
6- enjoy!