new build instructions

README.md

@@ -9,30 +9,17 @@
 
 ## Windows with Visual Studio's CLI
 
-Use build_win32.bat or directly:
-```
-set SDL2_DIR=path_to_your_sdl2_folder
-cl /Zi /MD /utf-8 /I.. /I..\.. /I%SDL2_DIR%\include main.cpp ..\..\backends\imgui_impl_sdl2.cpp ..\..\backends\imgui_impl_opengl3.cpp ..\..\imgui*.cpp /FeDebug/example_sdl2_opengl3.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
-#                 ^^ include paths                  ^^ source files                                                                                    ^^ output exe                    ^^ output dir   ^^ libraries
-# or for 64-bit:
-cl /Zi /MD /utf-8 /I.. /I..\.. /I%SDL2_DIR%\include main.cpp ..\..\backends\imgui_impl_sdl2.cpp ..\..\backends\imgui_impl_opengl3.cpp ..\..\imgui*.cpp /FeDebug/example_sdl2_opengl3.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x64 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
-```
+Install glfw and then run `build_win32.bat`
 
 ## Linux and similar Unixes
 
-Use our Makefile or directly:
+Install glfw from your distro's package manager and then:
 ```
-c++ `sdl2-config --cflags` -I .. -I ../.. -I ../../backends
-  main.cpp ../../backends/imgui_impl_sdl2.cpp ../../backends/imgui_impl_opengl3.cpp ../../imgui*.cpp
-  `sdl2-config --libs` -lGL -ldl
+make
 ```
-
 ## macOS
 
-Use our Makefile or directly:
 ```
-brew install sdl2
-c++ `sdl2-config --cflags` -I .. -I ../.. -I ../../backends
-  main.cpp ../../backends/imgui_impl_sdl2.cpp ../../backends/imgui_impl_opengl3.cpp ../../imgui*.cpp
-  `sdl2-config --libs` -framework OpenGl -framework CoreFoundation
+brew install glfw
+make
 ```