Update INSTALL for build under macOS

diff --git a/INSTALL b/INSTALL
index c61339aca3500b4685bea42bf909b1a4aaab17c9..b010ef4a5b316a3ad22f07fbd2dcb001a2fd452c 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -3,17 +3,19 @@ Basic Installation
 
 Currently to install Doom2D:Rembo from sources you need to have:
 
-   1. libSDL headers (SDL.h and SDL_mixer.h) at /usr/include/SDL
+   1. SDL and SDL_mixer (not SDL2!)
 
       In Debian GNU/Linux you can install them with this command:
 
       apt-get install libsdl1.2-dev libsdl-mixer1.2-dev
 
-   2. CMake to configure
+      On macOS (using MacPorts):
+
+      sudo port install libsdl libsdl_mixer
 
-   3. GCC and make to build
+   2. CMake to configure
 
-   4. libSDL.so and libSDL_mixer.so at /usr/lib to run
+   3. GCC or Clang to compile and make to build
 
 To proceed installation: