Big cmake changes (#1514)

* Delete emscripten.cmake

This file is not needed at this point. EMSDK provides a toolchain file that has a lot more things in it and is better supported. Project currently works fine with the documentation provided in Emscripten SDK on how to build projects.

* First pass file separation.

The main two files are cleaner now. Only important things can be seen. Major changes include:
- raylib_static is now the alias instead of raylib
- Repeating segments are removed and pulled into separate files into <root>/cmake
- File is reordered to make more sense
- Installs are better structured
- Library is build into an output directory "raylib" instead of "src"
- All public header files are now set as a public header file
- Source files need to be listed (it is a bad practice to capture them using wildcards and file globs)
- CMakeLists are better commented

* Second pass on the example dirs.

They are quite complex so I'm more hesitant to do major changes. Also it works pretty well. Noticed that I forgot one of the seperated files and added it into src/CMakeLists.txt.

* Returned the header copy as it was convenient to have the public headers copied.

* A better description to the variable RAYLIB_IS_MAIN

Co-authored-by: Rob Loach <[email protected]>

* Remove debug message

Co-authored-by: Rob Loach <[email protected]>

* Improvements based on review.

* Simplify the install condition to not be platform specific as it was before.

Co-authored-by: Alexander Neumann <[email protected]>

* Remove some CMAKE variables as they don't affect the build in any way

Co-authored-by: Alexander Neumann <[email protected]>

Co-authored-by: Rob Loach <[email protected]>
Co-authored-by: Alexander Neumann <[email protected]>

1 files changed, 0 insertions, 23 deletions

diff --git a/cmake/emscripten.cmake b/cmake/emscripten.cmake
deleted file mode 100644
index 1780dee9..00000000
--- a/cmake/emscripten.cmake
+++ /dev/null
@@ -1,23 +0,0 @@
-SET(CMAKE_SYSTEM_NAME Linux)
-SET(CMAKE_SYSTEM_PROCESSOR x86)
-
-if (CMAKE_HOST_WIN32)
-  SET(EMSCRIPTEN_EXTENSION ".bat")
-else ()
-  SET(EMSCRIPTEN_EXTENSION "")
-endif()
-
-SET(CMAKE_C_COMPILER   emcc${EMSCRIPTEN_EXTENSION})
-SET(CMAKE_CXX_COMPILER em++${EMSCRIPTEN_EXTENSION})
-
-if(NOT DEFINED CMAKE_AR)
-  find_program(CMAKE_AR NAMES emar${EMSCRIPTEN_EXTENSION})
-endif()
-if(NOT DEFINED CMAKE_RANLIB)
-  find_program(CMAKE_RANLIB NAMES emranlib${EMSCRIPTEN_EXTENSION})
-endif()
-
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH)
-set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)