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draco_build_definitions.cmake
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draco_build_definitions.cmake
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# Copyright 2021 The Draco Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.
if(DRACO_CMAKE_DRACO_BUILD_DEFINITIONS_CMAKE_)
return()
endif() # DRACO_CMAKE_DRACO_BUILD_DEFINITIONS_CMAKE_
set(DRACO_CMAKE_DRACO_BUILD_DEFINITIONS_CMAKE_ 1)
# Utility for controlling the main draco library dependency. This changes in
# shared builds, and when an optional target requires a shared library build.
macro(set_draco_target)
if(MSVC)
set(draco_dependency draco)
set(draco_plugin_dependency ${draco_dependency})
else()
if(BUILD_SHARED_LIBS)
set(draco_dependency draco_shared)
else()
set(draco_dependency draco_static)
endif()
set(draco_plugin_dependency draco_static)
endif()
endmacro()
# Configures flags and sets build system globals.
macro(draco_set_build_definitions)
string(TOLOWER "${CMAKE_BUILD_TYPE}" build_type_lowercase)
if(build_type_lowercase MATCHES "rel" AND DRACO_FAST)
if(MSVC)
list(APPEND draco_msvc_cxx_flags "/Ox")
else()
list(APPEND draco_base_cxx_flags "-O3")
endif()
endif()
draco_load_version_info()
# Library version info. See the libtool docs for updating the values:
# https://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
#
# c=<current>, r=<revision>, a=<age>
#
# libtool generates a .so file as .so.[c-a].a.r, while -version-info c:r:a is
# passed to libtool.
#
# We set DRACO_SOVERSION = [c-a].a.r
set(LT_CURRENT 9)
set(LT_REVISION 0)
set(LT_AGE 0)
math(EXPR DRACO_SOVERSION_MAJOR "${LT_CURRENT} - ${LT_AGE}")
set(DRACO_SOVERSION "${DRACO_SOVERSION_MAJOR}.${LT_AGE}.${LT_REVISION}")
unset(LT_CURRENT)
unset(LT_REVISION)
unset(LT_AGE)
list(APPEND draco_include_paths "${draco_root}" "${draco_root}/src"
"${draco_build}")
if(DRACO_TRANSCODER_SUPPORTED)
draco_setup_eigen()
draco_setup_filesystem()
draco_setup_tinygltf()
endif()
list(APPEND draco_defines "DRACO_CMAKE=1"
"DRACO_FLAGS_SRCDIR=\"${draco_root}\""
"DRACO_FLAGS_TMPDIR=\"/tmp\"")
if(MSVC OR WIN32)
list(APPEND draco_defines "_CRT_SECURE_NO_DEPRECATE=1" "NOMINMAX=1")
if(BUILD_SHARED_LIBS)
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
endif()
endif()
if(NOT MSVC)
if(${CMAKE_SIZEOF_VOID_P} EQUAL 8)
# Ensure 64-bit platforms can support large files.
list(APPEND draco_defines "_LARGEFILE_SOURCE" "_FILE_OFFSET_BITS=64")
endif()
if(NOT DRACO_DEBUG_COMPILER_WARNINGS)
if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
list(APPEND draco_clang_cxx_flags
"-Wno-implicit-const-int-float-conversion")
else()
list(APPEND draco_base_cxx_flags "-Wno-deprecated-declarations")
endif()
endif()
endif()
if(ANDROID)
if(CMAKE_ANDROID_ARCH_ABI STREQUAL "armeabi-v7a")
set(CMAKE_ANDROID_ARM_MODE ON)
endif()
endif()
set_draco_target()
if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "6")
# Quiet warnings in copy-list-initialization where {} elision has always
# been allowed.
list(APPEND draco_clang_cxx_flags "-Wno-missing-braces")
endif()
endif()
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "7")
if(CMAKE_SYSTEM_PROCESSOR STREQUAL "armv7")
# Quiet gcc 6 vs 7 abi warnings:
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728
list(APPEND draco_base_cxx_flags "-Wno-psabi")
list(APPEND ABSL_GCC_FLAGS "-Wno-psabi")
endif()
endif()
endif()
# Source file names ending in these suffixes will have the appropriate
# compiler flags added to their compile commands to enable intrinsics.
set(draco_neon_source_file_suffix "neon.cc")
set(draco_sse4_source_file_suffix "sse4.cc")
if((${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU" AND ${CMAKE_CXX_COMPILER_VERSION}
VERSION_LESS 5)
OR (${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang"
AND ${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 4))
message(
WARNING "GNU/GCC < v5 or Clang/LLVM < v4, ENABLING COMPATIBILITY MODE.")
draco_enable_feature(FEATURE "DRACO_OLD_GCC")
endif()
if(EMSCRIPTEN)
draco_check_emscripten_environment()
draco_get_required_emscripten_flags(
FLAG_LIST_VAR_COMPILER draco_base_cxx_flags
FLAG_LIST_VAR_LINKER draco_base_exe_linker_flags)
endif()
draco_configure_sanitizer()
endmacro()