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Documentation cmake (#1549)

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* Documenting the compiler flags

* Moved some android compiler flags and added documentation on them too.

* Some more restructuring.

Removed unnecessary comments that were self described by the code.
Added some more explanations around certain parts of CMake and especially around compiler flags.
This commit is contained in:
hristo
2021-01-26 15:34:27 +02:00
committed by GitHub
parent 65b299c6cf
commit 88a6f16c9a
5 changed files with 217 additions and 147 deletions
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51
cmake/LibraryConfigurations.cmake
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@ -1,7 +1,7 @@
if(${PLATFORM} MATCHES "Desktop")
if (${PLATFORM} MATCHES "Desktop")
set(PLATFORM_CPP "PLATFORM_DESKTOP")
if(APPLE)
if (APPLE)
# Need to force OpenGL 3.3 on OS X
# See: https://github.com/raysan5/raylib/issues/341
set(GRAPHICS "GRAPHICS_API_OPENGL_33")
@ -11,40 +11,35 @@ if(${PLATFORM} MATCHES "Desktop")
if (NOT CMAKE_SYSTEM STRLESS "Darwin-18.0.0")
add_definitions(-DGL_SILENCE_DEPRECATION)
MESSAGE(AUTHOR_WARNING "OpenGL is deprecated starting with macOS 10.14 (Mojave)!")
endif()
elseif(WIN32)
endif ()
elseif (WIN32)
add_definitions(-D_CRT_SECURE_NO_WARNINGS)
set(LIBS_PRIVATE ${LIBS_PRIVATE} winmm)
else()
else ()
find_library(pthread NAMES pthread)
find_package(OpenGL QUIET)
if ("${OPENGL_LIBRARIES}" STREQUAL "")
set(OPENGL_LIBRARIES "GL")
endif()
endif ()
if ("${CMAKE_SYSTEM_NAME}" MATCHES "(Net|Open)BSD")
find_library(OSS_LIBRARY ossaudio)
endif()
endif ()
set(LIBS_PRIVATE m pthread ${OPENGL_LIBRARIES} ${OSS_LIBRARY})
endif()
endif ()
elseif(${PLATFORM} MATCHES "Web")
elseif (${PLATFORM} MATCHES "Web")
set(PLATFORM_CPP "PLATFORM_WEB")
set(GRAPHICS "GRAPHICS_API_OPENGL_ES2")
set(CMAKE_C_FLAGS "-s USE_GLFW=3 -s ASSERTIONS=1 --profiling")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -s USE_GLFW=3 -s ASSERTIONS=1 --profiling")
set(CMAKE_STATIC_LIBRARY_SUFFIX ".a")
elseif(${PLATFORM} MATCHES "Android")
elseif (${PLATFORM} MATCHES "Android")
set(PLATFORM_CPP "PLATFORM_ANDROID")
set(GRAPHICS "GRAPHICS_API_OPENGL_ES2")
include(AddIfFlagCompiles)
add_if_flag_compiles(-ffunction-sections CMAKE_C_FLAGS)
add_if_flag_compiles(-funwind-tables CMAKE_C_FLAGS)
add_if_flag_compiles(-fstack-protector-strong CMAKE_C_FLAGS)
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
add_if_flag_compiles(-Wa,--noexecstack CMAKE_C_FLAGS)
add_if_flag_compiles(-no-canonical-prefixes CMAKE_C_FLAGS)
add_definitions(-DANDROID -D__ANDROID_API__=21)
include_directories(external/android/native_app_glue)
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--exclude-libs,libatomic.a -Wl,--build-id -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--warn-shared-textrel -Wl,--fatal-warnings -uANativeActivity_onCreate")
@ -52,7 +47,7 @@ elseif(${PLATFORM} MATCHES "Android")
find_library(OPENGL_LIBRARY OpenGL)
set(LIBS_PRIVATE m log android EGL GLESv2 OpenSLES atomic c)
elseif(${PLATFORM} MATCHES "Raspberry Pi")
elseif (${PLATFORM} MATCHES "Raspberry Pi")
set(PLATFORM_CPP "PLATFORM_RPI")
set(GRAPHICS "GRAPHICS_API_OPENGL_ES2")
@ -65,7 +60,7 @@ elseif(${PLATFORM} MATCHES "Raspberry Pi")
link_directories(/opt/vc/lib)
set(LIBS_PRIVATE ${GLESV2} ${EGL} ${BCMHOST} pthread rt m dl)
elseif(${PLATFORM} MATCHES "DRM")
elseif (${PLATFORM} MATCHES "DRM")
set(PLATFORM_CPP "PLATFORM_DRM")
set(GRAPHICS "GRAPHICS_API_OPENGL_ES2")
@ -81,7 +76,7 @@ elseif(${PLATFORM} MATCHES "DRM")
include_directories(/usr/include/libdrm)
set(LIBS_PRIVATE ${GLESV2} ${EGL} ${DRM} ${GBM} pthread m dl)
endif()
endif ()
if (${OPENGL_VERSION})
set(${SUGGESTED_GRAPHICS} "${GRAPHICS}")
@ -93,12 +88,18 @@ if (${OPENGL_VERSION})
set(GRAPHICS "GRAPHICS_API_OPENGL_11")
elseif (${OPENGL_VERSION} MATCHES "ES 2.0")
set(GRAPHICS "GRAPHICS_API_OPENGL_ES2")
endif()
endif ()
if ("${SUGGESTED_GRAPHICS}" AND NOT "${SUGGESTED_GRAPHICS}" STREQUAL "${GRAPHICS}")
message(WARNING "You are overriding the suggested GRAPHICS=${SUGGESTED_GRAPHICS} with ${GRAPHICS}! This may fail")
endif()
endif()
endif ()
endif ()
if(NOT GRAPHICS)
if (NOT GRAPHICS)
set(GRAPHICS "GRAPHICS_API_OPENGL_33")
endif()
endif ()
set(LIBS_PRIVATE ${LIBS_PRIVATE} ${OPENAL_LIBRARY})
if (${PLATFORM} MATCHES "Desktop")
set(LIBS_PRIVATE ${LIBS_PRIVATE} glfw)
endif ()