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a2c1c368af48644fa8995ecbe7138cc0d7900c30
blender-archive/build_files/cmake/platform/platform_unix.cmake
Clément Foucault a2c1c368af BLI: Refactor vector types & functions to use templates 
This patch implements the vector types (i.e:float2) by making heavy
usage of templating. All vector functions are now outside of the vector
classes (inside the blender::math namespace) and are not vector size
dependent for the most part.

In the ongoing effort to make shaders less GL centric, we are aiming
to share more code between GLSL and C++ to avoid code duplication.

Motivations:
- We are aiming to share UBO and SSBO structures between GLSL and C++.
  This means we will use many of the existing vector types and others we
  currently don't have (uintX, intX). All these variations were asking
  for many more code duplication.
- Deduplicate existing code which is duplicated for each vector size.
- We also want to share small functions. Which means that vector functions
  should be static and not in the class namespace.
- Reduce friction to use these types in new projects due to their
  incompleteness.
- The current state of the BLI_(float|double|mpq)(2|3|4).hh is a bit of a
  let down. Most clases are incomplete, out of sync with each others with
  different codestyles, and some functions that should be static are not
  (i.e: float3::reflect()).

Upsides:
- Still support .x, .y, .z, .w for readability.
- Compact, readable and easilly extendable.
- All of the vector functions are available for all the vectors types and
  can be restricted to certain types. Also template specialization let us
  define exception for special class (like mpq).
- With optimization ON, the compiler unroll the loops and performance is
  the same.

Downsides:
- Might impact debugability. Though I would arge that the bugs are rarelly
  caused by the vector class itself (since the operations are quite trivial)
  but by the type conversions.
- Might impact compile time. I did not saw a significant impact since the
  usage is not really widespread.
- Functions needs to be rewritten to support arbitrary vector length. For
  instance, one can't call len_squared_v3v3 in math::length_squared() and
  call it a day.
- Type cast does not work with the template version of the math:: vector
  functions. Meaning you need to manually cast float * and (float *)[3] to
  float3 for the function calls.
  i.e: math::distance_squared(float3(nearest.co), positions[i]);
- Some parts might loose in readability:
  float3::dot(v1.normalized(), v2.normalized())
  becoming
  math::dot(math::normalize(v1), math::normalize(v2))
  But I propose, when appropriate, to use
  using namespace blender::math; on function local or file scope to
  increase readability. dot(normalize(v1), normalize(v2))

Consideration:
- Include back .length() method. It is quite handy and is more C++
  oriented.
- I considered the GLM library as a candidate for replacement.
  It felt like too much for what we need and would be difficult to
  extend / modify to our needs.
- I used Macros to reduce code in operators declaration and potential
  copy paste bugs. This could reduce debugability and could be reverted.
- This touches delaunay_2d.cc and the intersection code. I would like to
  know @Howard Trickey (howardt) opinion on the matter.
- The noexcept on the copy constructor of mpq(2|3) is being removed.
  But according to @Jacques Lucke (JacquesLucke) it is not a real problem
  for now.

I would like to give a huge thanks to @Jacques Lucke (JacquesLucke) who
helped during this and pushed me to reduce the duplication further.

Reviewed By: brecht, sergey, JacquesLucke

Differential Revision: http://developer.blender.org/D13791
2022-01-12 12:19:39 +01:00

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# The Original Code is Copyright (C) 2016, Blender Foundation
# All rights reserved.
# ***** END GPL LICENSE BLOCK *****
# Libraries configuration for any *nix system including Linux and Unix.
# Detect precompiled library directory
if(NOT DEFINED LIBDIR)
# Path to a locally compiled libraries.
set(LIBDIR_NAME ${CMAKE_SYSTEM_NAME}_${CMAKE_SYSTEM_PROCESSOR})
string(TOLOWER ${LIBDIR_NAME} LIBDIR_NAME)
set(LIBDIR_NATIVE_ABI ${CMAKE_SOURCE_DIR}/../lib/${LIBDIR_NAME})
# Path to precompiled libraries with known CentOS 7 ABI.
set(LIBDIR_CENTOS7_ABI ${CMAKE_SOURCE_DIR}/../lib/linux_centos7_x86_64)
# Choose the best suitable libraries.
if(EXISTS ${LIBDIR_NATIVE_ABI})
set(LIBDIR ${LIBDIR_NATIVE_ABI})
elseif(EXISTS ${LIBDIR_CENTOS7_ABI})
set(LIBDIR ${LIBDIR_CENTOS7_ABI})
set(WITH_CXX11_ABI OFF)
if(CMAKE_COMPILER_IS_GNUCC AND
CMAKE_C_COMPILER_VERSION VERSION_LESS 9.3)
message(FATAL_ERROR "GCC version must be at least 9.3 for precompiled libraries, found ${CMAKE_C_COMPILER_VERSION}")
endif()
endif()
# Avoid namespace pollustion.
unset(LIBDIR_NATIVE_ABI)
unset(LIBDIR_CENTOS7_ABI)
endif()
if(EXISTS ${LIBDIR})
message(STATUS "Using pre-compiled LIBDIR: ${LIBDIR}")
file(GLOB LIB_SUBDIRS ${LIBDIR}/*)
# Ignore Mesa software OpenGL libraries, they are not intended to be
# linked against but to optionally override at runtime.
list(REMOVE_ITEM LIB_SUBDIRS ${LIBDIR}/mesa)
# NOTE: Make sure "proper" compiled zlib comes first before the one
# which is a part of OpenCollada. They have different ABI, and we
# do need to use the official one.
set(CMAKE_PREFIX_PATH ${LIBDIR}/zlib ${LIB_SUBDIRS})
set(WITH_STATIC_LIBS ON)
# OpenMP usually can't be statically linked into shared libraries,
# due to not being compiled with position independent code.
if(NOT WITH_PYTHON_MODULE)
set(WITH_OPENMP_STATIC ON)
endif()
set(Boost_NO_BOOST_CMAKE ON)
set(BOOST_ROOT ${LIBDIR}/boost)
set(BOOST_LIBRARYDIR ${LIBDIR}/boost/lib)
set(Boost_NO_SYSTEM_PATHS ON)
set(OPENEXR_ROOT_DIR ${LIBDIR}/openexr)
set(CLANG_ROOT_DIR ${LIBDIR}/llvm)
endif()
if(WITH_STATIC_LIBS)
string(APPEND CMAKE_EXE_LINKER_FLAGS " -static-libstdc++")
endif()
# Wrapper to prefer static libraries
macro(find_package_wrapper)
if(WITH_STATIC_LIBS)
find_package_static(${ARGV})
else()
find_package(${ARGV})
endif()
endmacro()
# ----------------------------------------------------------------------------
# Precompiled Libraries
#
# These are libraries that may be precompiled. For this we disable searching in
# the system directories so that we don't accidentally use them instead.
if(EXISTS ${LIBDIR})
without_system_libs_begin()
endif()
find_package_wrapper(JPEG REQUIRED)
find_package_wrapper(PNG REQUIRED)
find_package_wrapper(ZLIB REQUIRED)
find_package_wrapper(Zstd REQUIRED)
find_package_wrapper(Freetype REQUIRED)
if(WITH_PYTHON)
# No way to set py35, remove for now.
# find_package(PythonLibs)
# Use our own instead, since without py is such a rare case,
# require this package
# XXX Linking errors with debian static python :/
# find_package_wrapper(PythonLibsUnix REQUIRED)
find_package(PythonLibsUnix REQUIRED)
endif()
if(WITH_IMAGE_OPENEXR)
find_package_wrapper(OpenEXR) # our own module
if(NOT OPENEXR_FOUND)
set(WITH_IMAGE_OPENEXR OFF)
endif()
endif()
if(WITH_IMAGE_OPENJPEG)
find_package_wrapper(OpenJPEG)
if(NOT OPENJPEG_FOUND)
set(WITH_IMAGE_OPENJPEG OFF)
endif()
endif()
if(WITH_IMAGE_TIFF)
# XXX Linking errors with debian static tiff :/
# find_package_wrapper(TIFF)
find_package(TIFF)
if(NOT TIFF_FOUND)
set(WITH_IMAGE_TIFF OFF)
endif()
endif()
if(WITH_OPENAL)
find_package_wrapper(OpenAL)
if(NOT OPENAL_FOUND)
set(WITH_OPENAL OFF)
endif()
endif()
if(WITH_SDL)
if(WITH_SDL_DYNLOAD)
set(SDL_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/extern/sdlew/include/SDL2")
set(SDL_LIBRARY)
else()
find_package_wrapper(SDL2)
if(SDL2_FOUND)
# Use same names for both versions of SDL until we move to 2.x.
set(SDL_INCLUDE_DIR "${SDL2_INCLUDE_DIR}")
set(SDL_LIBRARY "${SDL2_LIBRARY}")
set(SDL_FOUND "${SDL2_FOUND}")
else()
find_package_wrapper(SDL)
endif()
mark_as_advanced(
SDL_INCLUDE_DIR
SDL_LIBRARY
)
# unset(SDLMAIN_LIBRARY CACHE)
if(NOT SDL_FOUND)
set(WITH_SDL OFF)
endif()
endif()
endif()
# Codecs
if(WITH_CODEC_SNDFILE)
find_package_wrapper(SndFile)
if(NOT SNDFILE_FOUND)
set(WITH_CODEC_SNDFILE OFF)
endif()
endif()
if(WITH_CODEC_FFMPEG)
if(EXISTS ${LIBDIR})
# For precompiled lib directory, all ffmpeg dependencies are in the same folder
file(GLOB ffmpeg_libs ${LIBDIR}/ffmpeg/lib/*.a ${LIBDIR}/sndfile/lib/*.a)
set(FFMPEG ${LIBDIR}/ffmpeg CACHE PATH "FFMPEG Directory")
set(FFMPEG_LIBRARIES ${ffmpeg_libs} ${ffmpeg_libs} CACHE STRING "FFMPEG Libraries")
else()
set(FFMPEG /usr CACHE PATH "FFMPEG Directory")
set(FFMPEG_LIBRARIES avformat avcodec avutil avdevice swscale CACHE STRING "FFMPEG Libraries")
endif()
mark_as_advanced(FFMPEG)
# lame, but until we have proper find module for ffmpeg
set(FFMPEG_INCLUDE_DIRS ${FFMPEG}/include)
if(EXISTS "${FFMPEG}/include/ffmpeg/")
list(APPEND FFMPEG_INCLUDE_DIRS "${FFMPEG}/include/ffmpeg")
endif()
# end lameness
mark_as_advanced(FFMPEG_LIBRARIES)
set(FFMPEG_LIBPATH ${FFMPEG}/lib)
endif()
if(WITH_FFTW3)
find_package_wrapper(Fftw3)
if(NOT FFTW3_FOUND)
set(WITH_FFTW3 OFF)
endif()
endif()
if(WITH_OPENCOLLADA)
find_package_wrapper(OpenCOLLADA)
if(OPENCOLLADA_FOUND)
if(WITH_STATIC_LIBS)
# PCRE is bundled with OpenCollada without headers, so can't use
# find_package reliably to detect it.
set(PCRE_LIBRARIES ${LIBDIR}/opencollada/lib/libpcre.a)
else()
find_package_wrapper(PCRE)
endif()
find_package_wrapper(XML2)
else()
set(WITH_OPENCOLLADA OFF)
endif()
endif()
if(WITH_MEM_JEMALLOC)
find_package_wrapper(JeMalloc)
if(NOT JEMALLOC_FOUND)
set(WITH_MEM_JEMALLOC OFF)
endif()
endif()
if(WITH_INPUT_NDOF)
find_package_wrapper(Spacenav)
if(SPACENAV_FOUND)
# use generic names within blenders buildsystem.
set(NDOF_INCLUDE_DIRS ${SPACENAV_INCLUDE_DIRS})
set(NDOF_LIBRARIES ${SPACENAV_LIBRARIES})
else()
set(WITH_INPUT_NDOF OFF)
endif()
endif()
if(WITH_CYCLES AND WITH_CYCLES_OSL)
set(CYCLES_OSL ${LIBDIR}/osl CACHE PATH "Path to OpenShadingLanguage installation")
if(EXISTS ${CYCLES_OSL} AND NOT OSL_ROOT)
set(OSL_ROOT ${CYCLES_OSL})
endif()
find_package_wrapper(OSL)
if(OSL_FOUND)
if(${OSL_LIBRARY_VERSION_MAJOR} EQUAL "1" AND ${OSL_LIBRARY_VERSION_MINOR} LESS "6")
# Note: --whole-archive is needed to force loading of all symbols in liboslexec,
# otherwise LLVM is missing the osl_allocate_closure_component function
set(OSL_LIBRARIES
${OSL_OSLCOMP_LIBRARY}
-Wl,--whole-archive ${OSL_OSLEXEC_LIBRARY}
-Wl,--no-whole-archive ${OSL_OSLQUERY_LIBRARY}
)
endif()
else()
message(STATUS "OSL not found, disabling it from Cycles")
set(WITH_CYCLES_OSL OFF)
endif()
endif()
if(WITH_OPENVDB)
find_package_wrapper(OpenVDB)
find_package_wrapper(Blosc)
if(NOT OPENVDB_FOUND)
set(WITH_OPENVDB OFF)
set(WITH_OPENVDB_BLOSC OFF)
message(STATUS "OpenVDB not found, disabling it")
elseif(NOT BLOSC_FOUND)
set(WITH_OPENVDB_BLOSC OFF)
message(STATUS "Blosc not found, disabling it for OpenVBD")
endif()
endif()
if(WITH_NANOVDB)
find_package_wrapper(NanoVDB)
if(NOT NANOVDB_FOUND)
set(WITH_NANOVDB OFF)
message(STATUS "NanoVDB not found, disabling it")
endif()
endif()
if(WITH_CPU_SIMD AND SUPPORT_NEON_BUILD)
find_package_wrapper(sse2neon)
endif()
if(WITH_ALEMBIC)
find_package_wrapper(Alembic)
if(NOT ALEMBIC_FOUND)
set(WITH_ALEMBIC OFF)
endif()
endif()
if(WITH_USD)
find_package_wrapper(USD)
if(NOT USD_FOUND)
set(WITH_USD OFF)
endif()
endif()
if(WITH_BOOST)
# uses in build instructions to override include and library variables
if(NOT BOOST_CUSTOM)
if(WITH_STATIC_LIBS)
set(Boost_USE_STATIC_LIBS ON)
endif()
set(Boost_USE_MULTITHREADED ON)
set(__boost_packages filesystem regex thread date_time)
if(WITH_CYCLES AND WITH_CYCLES_OSL)
if(NOT (${OSL_LIBRARY_VERSION_MAJOR} EQUAL "1" AND ${OSL_LIBRARY_VERSION_MINOR} LESS "6"))
list(APPEND __boost_packages wave)
else()
endif()
endif()
if(WITH_INTERNATIONAL)
list(APPEND __boost_packages locale)
endif()
if(WITH_OPENVDB)
list(APPEND __boost_packages iostreams)
endif()
list(APPEND __boost_packages system)
find_package(Boost 1.48 COMPONENTS ${__boost_packages})
if(NOT Boost_FOUND)
# try to find non-multithreaded if -mt not found, this flag
# doesn't matter for us, it has nothing to do with thread
# safety, but keep it to not disturb build setups
set(Boost_USE_MULTITHREADED OFF)
find_package(Boost 1.48 COMPONENTS ${__boost_packages})
endif()
unset(__boost_packages)
if(Boost_USE_STATIC_LIBS AND WITH_BOOST_ICU)
find_package(IcuLinux)
endif()
mark_as_advanced(Boost_DIR) # why doesn't boost do this?
endif()
set(BOOST_INCLUDE_DIR ${Boost_INCLUDE_DIRS})
set(BOOST_LIBRARIES ${Boost_LIBRARIES})
set(BOOST_LIBPATH ${Boost_LIBRARY_DIRS})
set(BOOST_DEFINITIONS "-DBOOST_ALL_NO_LIB")
if(Boost_USE_STATIC_LIBS AND WITH_BOOST_ICU)
find_package(IcuLinux)
list(APPEND BOOST_LIBRARIES ${ICU_LIBRARIES})
endif()
endif()
if(WITH_PUGIXML)
find_package_wrapper(PugiXML)
if(NOT PUGIXML_FOUND)
set(WITH_PUGIXML OFF)
message(STATUS "PugiXML not found, disabling WITH_PUGIXML")
endif()
endif()
if(WITH_OPENIMAGEIO)
find_package_wrapper(OpenImageIO)
set(OPENIMAGEIO_LIBRARIES
${OPENIMAGEIO_LIBRARIES}
${PNG_LIBRARIES}
${JPEG_LIBRARIES}
${ZLIB_LIBRARIES}
${BOOST_LIBRARIES}
)
set(OPENIMAGEIO_LIBPATH) # TODO, remove and reference the absolute path everywhere
set(OPENIMAGEIO_DEFINITIONS "")
if(WITH_IMAGE_TIFF)
list(APPEND OPENIMAGEIO_LIBRARIES "${TIFF_LIBRARY}")
endif()
if(WITH_IMAGE_OPENEXR)
list(APPEND OPENIMAGEIO_LIBRARIES "${OPENEXR_LIBRARIES}")
endif()
if(NOT OPENIMAGEIO_FOUND)
set(WITH_OPENIMAGEIO OFF)
message(STATUS "OpenImageIO not found, disabling WITH_CYCLES")
endif()
endif()
if(WITH_OPENCOLORIO)
find_package_wrapper(OpenColorIO 2.0.0)
set(OPENCOLORIO_LIBRARIES ${OPENCOLORIO_LIBRARIES})
set(OPENCOLORIO_LIBPATH) # TODO, remove and reference the absolute path everywhere
set(OPENCOLORIO_DEFINITIONS)
if(NOT OPENCOLORIO_FOUND)
set(WITH_OPENCOLORIO OFF)
message(STATUS "OpenColorIO not found")
endif()
endif()
if(WITH_CYCLES AND WITH_CYCLES_EMBREE)
find_package(Embree 3.8.0 REQUIRED)
endif()
if(WITH_OPENIMAGEDENOISE)
find_package_wrapper(OpenImageDenoise)
if(NOT OPENIMAGEDENOISE_FOUND)
set(WITH_OPENIMAGEDENOISE OFF)
message(STATUS "OpenImageDenoise not found")
endif()
endif()
if(WITH_LLVM)
if(EXISTS ${LIBDIR})
set(LLVM_STATIC ON)
endif()
find_package_wrapper(LLVM)
if(WITH_CLANG)
find_package_wrapper(Clang)
endif()
# Symbol conflicts with same UTF library used by OpenCollada
if(EXISTS ${LIBDIR})
if(WITH_OPENCOLLADA AND (${LLVM_VERSION} VERSION_LESS "4.0.0"))
list(REMOVE_ITEM OPENCOLLADA_LIBRARIES ${OPENCOLLADA_UTF_LIBRARY})
endif()
endif()
if(NOT LLVM_FOUND)
set(WITH_LLVM OFF)
set(WITH_CLANG OFF)
message(STATUS "LLVM not found")
else()
if(NOT CLANG_FOUND)
set(WITH_CLANG OFF)
message(STATUS "Clang not found")
endif()
endif()
endif()
if(WITH_OPENSUBDIV)
find_package_wrapper(OpenSubdiv)
set(OPENSUBDIV_LIBRARIES ${OPENSUBDIV_LIBRARIES})
set(OPENSUBDIV_LIBPATH) # TODO, remove and reference the absolute path everywhere
if(NOT OPENSUBDIV_FOUND)
set(WITH_OPENSUBDIV OFF)
message(STATUS "OpenSubdiv not found")
endif()
endif()
if(WITH_TBB)
find_package_wrapper(TBB)
if(NOT TBB_FOUND)
message(WARNING "TBB not found, disabling WITH_TBB")
set(WITH_TBB OFF)
endif()
endif()
if(WITH_XR_OPENXR)
find_package(XR_OpenXR_SDK)
if(NOT XR_OPENXR_SDK_FOUND)
message(WARNING "OpenXR-SDK not found, disabling WITH_XR_OPENXR")
set(WITH_XR_OPENXR OFF)
endif()
endif()
if(WITH_GMP)
find_package_wrapper(GMP)
if(NOT GMP_FOUND)
message(WARNING "GMP not found, disabling WITH_GMP")
set(WITH_GMP OFF)
endif()
endif()
if(WITH_POTRACE)
find_package_wrapper(Potrace)
if(NOT POTRACE_FOUND)
message(WARNING "potrace not found, disabling WITH_POTRACE")
set(WITH_POTRACE OFF)
endif()
endif()
if(WITH_HARU)
find_package_wrapper(Haru)
if(NOT HARU_FOUND)
message(WARNING "Haru not found, disabling WITH_HARU")
set(WITH_HARU OFF)
endif()
endif()
if(EXISTS ${LIBDIR})
without_system_libs_end()
endif()
# ----------------------------------------------------------------------------
# Build and Link Flags
# OpenSuse needs lutil, ArchLinux not, for now keep, can avoid by using --as-needed
if(HAIKU)
list(APPEND PLATFORM_LINKLIBS -lnetwork)
else()
list(APPEND PLATFORM_LINKLIBS -lutil -lc -lm)
endif()
find_package(Threads REQUIRED)
list(APPEND PLATFORM_LINKLIBS ${CMAKE_THREAD_LIBS_INIT})
# used by other platforms
set(PTHREADS_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
if(CMAKE_DL_LIBS)
list(APPEND PLATFORM_LINKLIBS ${CMAKE_DL_LIBS})
endif()
if(CMAKE_SYSTEM_NAME MATCHES "Linux")
if(NOT WITH_PYTHON_MODULE)
# binreloc is linux only
set(BINRELOC_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/extern/binreloc/include)
set(WITH_BINRELOC ON)
endif()
endif()
# lfs on glibc, all compilers should use
add_definitions(-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE)
# ----------------------------------------------------------------------------
# System Libraries
#
# Keep last, so indirectly linked libraries don't override our own pre-compiled libs.
if(WITH_LZO AND WITH_SYSTEM_LZO)
find_package_wrapper(LZO)
if(NOT LZO_FOUND)
message(FATAL_ERROR "Failed finding system LZO version!")
endif()
endif()
if(WITH_SYSTEM_EIGEN3)
find_package_wrapper(Eigen3)
if(NOT EIGEN3_FOUND)
message(FATAL_ERROR "Failed finding system Eigen3 version!")
endif()
endif()
# Jack is intended to use the system library.
if(WITH_JACK)
find_package_wrapper(Jack)
if(NOT JACK_FOUND)
set(WITH_JACK OFF)
endif()
endif()
# Pulse is intended to use the system library.
if(WITH_PULSEAUDIO)
find_package_wrapper(Pulse)
if(NOT PULSE_FOUND)
set(WITH_PULSEAUDIO OFF)
endif()
endif()
# Audio IO
if(WITH_SYSTEM_AUDASPACE)
find_package_wrapper(Audaspace)
if(NOT AUDASPACE_FOUND OR NOT AUDASPACE_C_FOUND)
message(FATAL_ERROR "Audaspace external library not found!")
endif()
endif()
if(WITH_GHOST_WAYLAND)
find_package(PkgConfig)
pkg_check_modules(wayland-client REQUIRED wayland-client>=1.12)
pkg_check_modules(wayland-egl REQUIRED wayland-egl)
pkg_check_modules(wayland-scanner REQUIRED wayland-scanner)
pkg_check_modules(xkbcommon REQUIRED xkbcommon)
pkg_check_modules(wayland-cursor REQUIRED wayland-cursor)
pkg_check_modules(dbus REQUIRED dbus-1)
set(WITH_GL_EGL ON)
list(APPEND PLATFORM_LINKLIBS
${wayland-client_LINK_LIBRARIES}
${wayland-egl_LINK_LIBRARIES}
${xkbcommon_LINK_LIBRARIES}
${wayland-cursor_LINK_LIBRARIES}
${dbus_LINK_LIBRARIES}
)
endif()
if(WITH_GHOST_X11)
find_package(X11 REQUIRED)
find_path(X11_XF86keysym_INCLUDE_PATH X11/XF86keysym.h ${X11_INC_SEARCH_PATH})
mark_as_advanced(X11_XF86keysym_INCLUDE_PATH)
list(APPEND PLATFORM_LINKLIBS ${X11_X11_LIB})
if(WITH_X11_XINPUT)
if(X11_Xinput_LIB)
list(APPEND PLATFORM_LINKLIBS ${X11_Xinput_LIB})
else()
message(FATAL_ERROR "LibXi not found. Disable WITH_X11_XINPUT if you
want to build without tablet support")
endif()
endif()
if(WITH_X11_XF86VMODE)
# XXX, why doesn't cmake make this available?
find_library(X11_Xxf86vmode_LIB Xxf86vm ${X11_LIB_SEARCH_PATH})
mark_as_advanced(X11_Xxf86vmode_LIB)
if(X11_Xxf86vmode_LIB)
list(APPEND PLATFORM_LINKLIBS ${X11_Xxf86vmode_LIB})
else()
message(FATAL_ERROR "libXxf86vm not found. Disable WITH_X11_XF86VMODE if you
want to build without")
endif()
endif()
if(WITH_X11_XFIXES)
if(X11_Xfixes_LIB)
list(APPEND PLATFORM_LINKLIBS ${X11_Xfixes_LIB})
else()
message(FATAL_ERROR "libXfixes not found. Disable WITH_X11_XFIXES if you
want to build without")
endif()
endif()
if(WITH_X11_ALPHA)
find_library(X11_Xrender_LIB Xrender ${X11_LIB_SEARCH_PATH})
mark_as_advanced(X11_Xrender_LIB)
if(X11_Xrender_LIB)
list(APPEND PLATFORM_LINKLIBS ${X11_Xrender_LIB})
else()
message(FATAL_ERROR "libXrender not found. Disable WITH_X11_ALPHA if you
want to build without")
endif()
endif()
endif()
# ----------------------------------------------------------------------------
# Compilers
# GNU Compiler
if(CMAKE_COMPILER_IS_GNUCC)
# ffp-contract=off:
# Automatically turned on when building with "-march=native". This is
# explicitly turned off here as it will make floating point math give a bit
# different results. This will lead to automated test failures. So disable
# this until we support it. Seems to default to off in clang and the intel
# compiler.
set(PLATFORM_CFLAGS "-pipe -fPIC -funsigned-char -fno-strict-aliasing -ffp-contract=off")
# `maybe-uninitialized` is unreliable in release builds, but fine in debug builds.
set(GCC_EXTRA_FLAGS_RELEASE "-Wno-maybe-uninitialized")
set(CMAKE_C_FLAGS_RELEASE "${GCC_EXTRA_FLAGS_RELEASE} ${CMAKE_C_FLAGS_RELEASE}")
set(CMAKE_C_FLAGS_RELWITHDEBINFO "${GCC_EXTRA_FLAGS_RELEASE} ${CMAKE_C_FLAGS_RELWITHDEBINFO}")
set(CMAKE_CXX_FLAGS_RELEASE "${GCC_EXTRA_FLAGS_RELEASE} ${CMAKE_CXX_FLAGS_RELEASE}")
string(PREPEND CMAKE_CXX_FLAGS_RELWITHDEBINFO "${GCC_EXTRA_FLAGS_RELEASE} ")
unset(GCC_EXTRA_FLAGS_RELEASE)
if(WITH_LINKER_GOLD)
execute_process(
COMMAND ${CMAKE_C_COMPILER} -fuse-ld=gold -Wl,--version
ERROR_QUIET OUTPUT_VARIABLE LD_VERSION)
if("${LD_VERSION}" MATCHES "GNU gold")
string(APPEND CMAKE_C_FLAGS " -fuse-ld=gold")
string(APPEND CMAKE_CXX_FLAGS " -fuse-ld=gold")
else()
message(STATUS "GNU gold linker isn't available, using the default system linker.")
endif()
unset(LD_VERSION)
endif()
if(WITH_LINKER_LLD)
execute_process(
COMMAND ${CMAKE_C_COMPILER} -fuse-ld=lld -Wl,--version
ERROR_QUIET OUTPUT_VARIABLE LD_VERSION)
if("${LD_VERSION}" MATCHES "LLD")
string(APPEND CMAKE_C_FLAGS " -fuse-ld=lld")
string(APPEND CMAKE_CXX_FLAGS " -fuse-ld=lld")
else()
message(STATUS "LLD linker isn't available, using the default system linker.")
endif()
unset(LD_VERSION)
endif()
# CLang is the same as GCC for now.
elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
set(PLATFORM_CFLAGS "-pipe -fPIC -funsigned-char -fno-strict-aliasing")
# Intel C++ Compiler
elseif(CMAKE_C_COMPILER_ID MATCHES "Intel")
# think these next two are broken
find_program(XIAR xiar)
if(XIAR)
set(CMAKE_AR "${XIAR}")
endif()
mark_as_advanced(XIAR)
find_program(XILD xild)
if(XILD)
set(CMAKE_LINKER "${XILD}")
endif()
mark_as_advanced(XILD)
string(APPEND CMAKE_C_FLAGS " -fp-model precise -prec_div -parallel")
string(APPEND CMAKE_CXX_FLAGS " -fp-model precise -prec_div -parallel")
# string(APPEND PLATFORM_CFLAGS " -diag-enable sc3")
set(PLATFORM_CFLAGS "-pipe -fPIC -funsigned-char -fno-strict-aliasing")
string(APPEND PLATFORM_LINKFLAGS " -static-intel")
endif()
# Avoid conflicts with Mesa llvmpipe, Luxrender, and other plug-ins that may
# use the same libraries as Blender with a different version or build options.
set(PLATFORM_LINKFLAGS
"${PLATFORM_LINKFLAGS} -Wl,--version-script='${CMAKE_SOURCE_DIR}/source/creator/blender.map'"
)
# Don't use position independent executable for portable install since file
# browsers can't properly detect blender as an executable then. Still enabled
# for non-portable installs as typically used by Linux distributions.
if(WITH_INSTALL_PORTABLE)
string(APPEND CMAKE_EXE_LINKER_FLAGS " -no-pie")
endif()
if(WITH_COMPILER_CCACHE)
find_program(CCACHE_PROGRAM ccache)
if(CCACHE_PROGRAM)
# Makefiles and ninja
set(CMAKE_C_COMPILER_LAUNCHER "${CCACHE_PROGRAM}" CACHE STRING "" FORCE)
set(CMAKE_CXX_COMPILER_LAUNCHER "${CCACHE_PROGRAM}" CACHE STRING "" FORCE)
else()
message(WARNING "Ccache NOT found, disabling WITH_COMPILER_CCACHE")
set(WITH_COMPILER_CCACHE OFF)
endif()
endif()
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