116 lines
4.1 KiB
CMake
116 lines
4.1 KiB
CMake
###############################################################################
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# CONFIGURATION AND DEFAULT DEFINITIONS & INCLUDES #
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###############################################################################
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if (NOT DEFINED MTS_VERSION)
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message(FATAL_ERROR "This file has to be included from the main build file.")
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endif()
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# Default initial compiler flags which may be modified by advanced users
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if (MTS_CMAKE_INIT)
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set(MTS_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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if (CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
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set(MTS_CXX_FLAGS "-fvisibility=hidden -pipe -march=nocona -mfpmath=sse -ffast-math -Wall -Winvalid-pch")
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endif()
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if (MTS_CXX_FLAGS)
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set(CMAKE_CXX_FLAGS "${MTS_CXX_FLAGS} ${CMAKE_CXX_FLAGS}" CACHE
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STRING "Flags used by the compiler during all build types." FORCE)
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set(MTS_CXX_FLAGS)
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endif()
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endif()
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# Top level configuration definitions
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option(MTS_DEBUG "Enable assertions etc. Usually a good idea." ON)
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if (MTS_DEBUG)
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add_definitions(-DMTS_DEBUG)
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endif()
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option(MTS_KD_DEBUG "Enable additional checks in the kd-Tree.
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This is quite slow and mainly useful to track down bugs when they are suspected."
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OFF)
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if (MTS_KD_DEBUG)
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add_definitions(-DMTS_KD_DEBUG)
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endif()
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option(MTS_KD_CONSERVE_MEMORY
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"Use less memory for storing geometry (at the cost of speed)." OFF)
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if (MTS_KD_CONSERVE_MEMORY)
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add_definitions(-DMTS_KD_CONSERVE_MEMORY)
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endif()
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option(MTS_SINGLE_PRECISION
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"Do all computation in single precision. This is usually sufficient." ON)
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if (MTS_SINGLE_PRECISION)
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add_definitions(-DSINGLE_PRECISION)
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endif()
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set(MTS_SPECTRUM_SAMPLES 3 CACHE STRING
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"Number of spectral samples used to render. The default is 3 (RGB-mode).
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For high-quality spectral rendering, this should be set to 30 or higher.")
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if(NOT "${MTS_SPECTRUM_SAMPLES}" MATCHES "^[1-9][0-9]*$" OR
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MTS_SPECTRUM_SAMPLES LESS 3 OR MTS_SPECTRUM_SAMPLES GREATER 2048)
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message(FATAL_ERROR
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"Invalid number of spectrum samples: ${MTS_SPECTRUM_SAMPLES}. Valid values: [3,2048]")
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else()
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add_definitions(-DSPECTRUM_SAMPLES=${MTS_SPECTRUM_SAMPLES})
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endif()
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CMAKE_DEPENDENT_OPTION (MTS_DOUBLE_PRECISION
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"Do all computation in double precision." ON
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"NOT MTS_SINGLE_PRECISION" OFF)
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if (MTS_DOUBLE_PRECISION)
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add_definitions(-DDOUBLE_PRECISION)
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endif()
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CMAKE_DEPENDENT_OPTION (MTS_SSE "Activate optimized SSE routines." ON
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"NOT MTS_DOUBLE_PRECISION" OFF)
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if (MTS_SSE)
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add_definitions(-DMTS_SSE)
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endif ()
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CMAKE_DEPENDENT_OPTION (MTS_HAS_COHERENT_RT
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"Include coherent ray tracing support." ON
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"MTS_SSE" OFF)
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if (MTS_HAS_COHERENT_RT)
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add_definitions(-DMTS_HAS_COHERENT_RT)
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endif()
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CMAKE_DEPENDENT_OPTION (MTS_DEBUG_FP
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"Generated NaNs will cause floating point exceptions, which can be caught in a debugger (very slow!)" OFF
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"NOT MTS_DOUBLE_PRECISION" OFF)
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if (MTS_DEBUG_FP)
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add_definitions(-DMTS_DEBUG_FP)
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endif()
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# Options to disable MSVC STL debug + security features (slow..!)
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if (MSVC OR (WIN32 AND CMAKE_C_COMPILER_ID MATCHES "Intel"))
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# _SECURE_SCL already defaults to 0 in release mode in MSVC 2010
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if(MSVC_VERSION LESS 1600)
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option(MTS_NO_CHECKED_ITERATORS "Disable checked iterators in MSVC" OFF)
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option(MTS_NO_ITERATOR_DEBUGGING "Disable iterator debugging in MSVC" OFF)
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else()
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set(MTS_NO_CHECKED_ITERATORS OFF)
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set(MTS_NO_ITERATOR_DEBUGGING OFF)
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endif()
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option(MTS_NO_BUFFER_CHECKS "Disable the buffer security checks in MSVC" ON)
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if (MTS_NO_ITERATOR_DEBUGGING)
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add_definitions (-D_HAS_ITERATOR_DEBUGGING=0)
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endif()
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if (MTS_NO_CHECKED_ITERATORS OR MTS_NO_ITERATOR_DEBUGGING)
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add_definitions (-D_SECURE_SCL=0 -D_SCL_SECURE_NO_WARNINGS)
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message (WARNING "The secure iterators were manually disabled. There might be incompatibility problems.")
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endif ()
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if (MTS_NO_BUFFER_CHECKS)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /GS-")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /GS-")
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endif()
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endif()
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# Platform-specific definitions
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if (WIN32 AND CMAKE_SIZEOF_VOID_P EQUAL 8)
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add_definitions(-DWIN64)
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endif()
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if (MSVC AND MTS_SSE AND NOT CMAKE_CL_64)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /arch:SSE2")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:SSE2")
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endif()
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