Adding a bit of documentation for MinGW that was left off the previous SVN commit

git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1071 7f0cb862-5218-0410-a997-914c9d46530a

.gitattributes

@@ -12,6 +12,7 @@ freeglut/freeglut/NEWS svn_keywords=Author+Date+Id+Revision
 freeglut/freeglut/README svn_keywords=Author+Date+Id+Revision
 freeglut/freeglut/README.cygwin_mingw -text
 freeglut/freeglut/README.mac -text
+freeglut/freeglut/README.mingw_cross -text
 freeglut/freeglut/README.win32 svn_keywords=Author+Date+Id+Revision
 freeglut/freeglut/TODO svn_keywords=Author+Date+Id+Revision
 freeglut/freeglut/VisualStudio/2008/CallbackMaker/CallbackMaker.vcproj -text

freeglut/freeglut/README.mingw_cross

@@ -0,0 +1,24 @@
+Cross-compilation from GNU/Linux (static and shared DLL)
+========================================================
+
+Install MinGW32 and prepare FreeGLUT on Debian/Ubuntu:
+
+  apt-get install mingw32
+  ./configure --host=i586-mingw32msvc --prefix=/freeglut
+
+Install MinGW32 and prepare FreeGLUT on Fedora:
+
+  yum install mingw32-gcc
+  ./configure --host=i686-pc-mingw32 --prefix=/freeglut
+
+Cross-compile!
+
+  make
+  make install DESTDIR=$(pwd)
+
+Everything is in the new freeglut/ directory.
+The .dll is in the freeglut/bin/.
+
+
+Compilation of your own programs is done as usual.
+See README.cygwin_mingw for details.