added some beginner notes for compiling through cmake on Unix

git-svn-id: svn+ssh://svn.code.sf.net/p/freeglut/code/trunk/freeglut/freeglut@1564 7f0cb862-5218-0410-a997-914c9d46530a

diff --git a/README.cmake b/README.cmake
index 9d4bfac..78c2984 100644 (file)
--- a/README.cmake
+++ b/README.cmake
@@ -37,6 +37,11 @@ How to build freeglut on UNIX
   - FreeBSD: cd /usr/ports/devel/cmake && make install\r
   Or directly from their website:\r
   http://www.cmake.org/cmake/resources/software.html\r
+- Make sure you have the basics for compiling code, such as C compiler\r
+  (e.g., GCC) and the make package.\r
+- Also make sure you have packages installed that provide the relevant\r
+  header files for x11 (including xrandr) and opengl (e.g.,\r
+  libgl1-mesa-dev, libx11-dev and libxrandr-dev on Debian/Ubuntu).\r
 - Install XInput: libxi-dev / libXi-devel\r
 - Run 'cmake .' in the freeglut directory to generate the makefile.\r
 - Run 'make' to build, and 'make install' to install freeglut.\r