Question

I’m setting up my visual studio project to use CMake, but I got two issues I haven’t been able to solve yet.

1 How can I set a preprocessor define for Release and another for Debug?

2 I have a project with opengl and directx so for DebugOpenGL and ReleaseOpenGL i want to exclude all directx cpp/h files from the buld. With DebugDirectX and ReleaseDirectx exclude the opengl files. How do I set this up?

EDIT:

Heres what I got for 1. so far:

cmake_minimum_required(VERSION 2.8)

project(TEngine)

if(CMAKE_CONFIGURATION_TYPES AND MSVC)
#DebugOpenGL flags
set(CMAKE_CXX_FLAGS_DEBUGOPENGL "/D_DEBUG /MDd /Zi /Ob0 /Od /RTC1" CACHE STRING "Flags used by the C++ compiler during maintainer builds." FORCE)
set(CMAKE_C_FLAGS_DEBUGOPENGL "/D_DEBUG /MDd /Zi  /Ob0 /Od /RTC1" CACHE STRING "Flags used by the C compiler during maintainer builds." FORCE)
set(CMAKE_EXE_LINKER_FLAGS_DEBUGOPENGL "/debug /INCREMENTAL" CACHE STRING "Flags used for linking binaries during maintainer builds." FORCE )
set(CMAKE_SHARED_LINKER_FLAGS_DEBUGOPENGL "/debug /INCREMENTAL" CACHE STRING "Flags used by the shared libraries linker during maintainer builds." FORCE )

#ReleaseOpenGL flags
set(CMAKE_CXX_FLAGS_RELEASEOPENGL "/MD /O2 /Ob2 /D NDEBUG" CACHE STRING "Flags used by the C++ compiler during maintainer builds." FORCE)
set(CMAKE_C_FLAGS_RELEASEOPENGL "/MD /O2 /Ob2 /D NDEBUG" CACHE STRING "Flags used by the C compiler during maintainer builds." FORCE)
set(CMAKE_EXE_LINKER_FLAGS_RELEASEOPENGL "/INCREMENTAL:NO" CACHE STRING "Flags used for linking binaries during maintainer builds." FORCE )
set(CMAKE_SHARED_LINKER_FLAGS_RELEASEOPENGL "/INCREMENTAL:NO" CACHE STRING "Flags used by the shared libraries linker during maintainer builds." FORCE )

#DebugDirectX flags
set(CMAKE_CXX_FLAGS_DEBUGDIRECTX "/D_DEBUG /MDd /Zi /Ob0 /Od /RTC1" CACHE STRING "Flags used by the C++ compiler during maintainer builds." FORCE)
set(CMAKE_C_FLAGS_DEBUGDIRECTX "/D_DEBUG /MDd /Zi  /Ob0 /Od /RTC1" CACHE STRING "Flags used by the C compiler during maintainer builds." FORCE)
set(CMAKE_EXE_LINKER_FLAGS_DEBUGDIRECTX "/debug /INCREMENTAL" CACHE STRING "Flags used for linking binaries during maintainer builds." FORCE )
set(CMAKE_SHARED_LINKER_FLAGS_DEBUGDIRECTX "/debug /INCREMENTAL" CACHE STRING "Flags used by the shared libraries linker during maintainer builds." FORCE )

#ReleaseDirectx flags
set(CMAKE_CXX_FLAGS_RELEASEDIRECTX "/MD /O2 /Ob2 /D NDEBUG" CACHE STRING "Flags used by the C++ compiler during maintainer builds." FORCE)
set(CMAKE_C_FLAGS_RELEASEDIRECTX "/MD /O2 /Ob2 /D NDEBUG" CACHE STRING "Flags used by the C compiler during maintainer builds." FORCE)
set(CMAKE_EXE_LINKER_FLAGS_RELEASEDIRECTX "/INCREMENTAL:NO" CACHE STRING "Flags used for linking binaries during maintainer builds." FORCE )
set(CMAKE_SHARED_LINKER_FLAGS_RELEASEDIRECTX "/INCREMENTAL:NO" CACHE STRING "Flags used by the shared libraries linker during maintainer builds." FORCE )

set(CMAKE_CONFIGURATION_TYPES "DebugOpenGL;ReleaseOpenGL;DebugDirectX;ReleaseDirectX")
set(CMAKE_CONFIGURATION_TYPES "${CMAKE_CONFIGURATION_TYPES}" CACHE STRING
"Reset the configurations to what we need"
FORCE)

if(CMAKE_BUILD_TYPE STREQUAL "DebugOpenGL")
    add_definitions(/DTE_USE_OPENGL)
endif()
if(CMAKE_BUILD_TYPE STREQUAL "ReleaseOpenGL")
    add_definitions(/DTE_USE_OPENGL)
endif()
if(CMAKE_BUILD_TYPE STREQUAL "DebugDirectX")
    add_definitions(/DTE_USE_OPENGL)
endif()
if(CMAKE_BUILD_TYPE STREQUAL "ReleaseDirectX")
    add_definitions(/DTE_USE_OPENGL)
endif()
endif()

set(Boost_ADDITIONAL_VERSIONS "1.47" "1.47.0")
set(BOOST_ROOT "${TEngine_SOURCE_DIR}/Externals/boost_1_47_0")

if(WIN32)
    add_definitions(-DTEWINDOWS)
elseif(LINUX)
    add_definitions(-DTELINUX -DTE_USE_OPENGL)
endif()

subdirs(TEEngineTest TECore TEGraphics TEPhysics TEngine)

Answer 1

1:

if(CMAKE_BUILD_TYPE STREQUAL "Debug")
  add_definitions(/DYOURDEFINITION)
endif()

2:
If i understood you right, you need to create an option variable

option(USE_OPENGL "Use OpenGL or DirectX")

And then check for it when you are adding new target:

if(USE_OPENGL)
add_subdirectory(OpenGL)
else()
add_subdirectory(DirectX)
endif()

Of course, you should create CMakeLists.txt in OpenGL/ and DirectX/ dirs.