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# this file only serves as toolchain file when specified so explicitly
# when building the software. from repository's root directory:
# mkdir build && cd build && cmake -DCMAKE_TOOLCHAIN_FILE=$(pwd)/../cmake/mingw-w64.cmake
# -sh 20140922
SET(CMAKE_SYSTEM_NAME Windows)
SET(CMAKE_SYSTEM_VERSION 1)
unset(c)
unset(e)
# specify the cross compiler
if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
set(p C:/mingw-w64/i686-5.3.0-posix-dwarf-rt_v4-rev0/mingw32/bin/)
set(e .exe)
endif()
set(c ${p}i686-w64-mingw32-)
#set(CMAKE_MAKE_PROGRAM ${p}/mingw32-make.exe CACHE FILEPATH "" FORCE)
SET(CMAKE_C_COMPILER ${c}gcc${e})
SET(CMAKE_CXX_COMPILER ${c}g++${e})
set(CMAKE_RC_COMPILER ${c}windres${e})
set(CMAKE_LINKER ${c}ld${e})
set(CMAKE_AR ${c}gcc-ar${e} CACHE STRING "" FORCE)
set(CMAKE_NM ${c}gcc-nm${e} CACHE STRING "" FORCE)
set(CMAKE_RANLIB ${c}gcc-ranlib${e} CACHE STRING "" FORCE)
set(CMAKE_OBJCOPY ${c}objcopy${e} CACHE STRING "" FORCE)
set(CMAKE_OBJDUMP ${c}objdump${e} CACHE STRING "" FORCE)
set(CMAKE_STRIP ${c}strip${e} CACHE STRING "" FORCE)
#SET(CMAKE_FIND_ROOT_PATH /usr/i686-w64-mingw32)
# search for programs in the host directories
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
# don't poison with system compile-time data
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
# oldest CPU supported here is Northwood-based Pentium 4. -sh 20150811
set(fpu "-ffast-math -mfpmath=both -mstackrealign -ftree-vectorize")
set(cpu "-O3 -march=pentium4 -mtune=corei7-avx -msse -msse2 -mno-sse3 -mno-avx -frename-registers -fno-PIC")
set(lto "-flto -fuse-linker-plugin -flto-compression-level=3 -flto-partition=balanced -fno-ipa-pta")
set(_CFLAGS " -fvisibility=hidden ")
set(_CXXFLAGS "${_CFLAGS}")
set(_CFLAGS_RELEASE "-s ${cpu} ${fpu} ${lto}")
set(_CFLAGS_DEBUG "-g -ggdb")
set(_CXXFLAGS_RELEASE "${_CFLAGS_RELEASE}")
set(_CXXFLAGS_DEBUG "${_CFLAGS_DEBUG}")
set(_LDFLAGS "-Wl,--as-needed")
set(_LDFLAGS_RELEASE "")
set(_LDFLAGS_DEBUG "")
set(WARNINGS_ENABLE TRUE CACHE BOOL "Emit additional warnings at compile-time")
# these are very noisy, high false positive rate. only for development.
set(WARNINGS_FINAL_SUGGESTIONS FALSE CACHE BOOL "Emit very noisy warnings at compile-time")
set(WARNINGS_NUMERIC FALSE CACHE BOOL "Emit very noisy warnings at compile-time")
set(WARNINGS_MISSING_OVERRIDE FALSE CACHE BOOL "Emit very noisy warnings at compile-time")
set(noisy-warns "")
set(suggest-final "")
set(numerics "")
set(missing-override "")
if(CMAKE_PROJECT_NAME STREQUAL "opentrack" AND WARNINGS_ENABLE)
if(WARNINGS_FINAL_SUGGESTIONS)
set(suggest-final "-Wsuggest-final-types -Wsuggest-final-methods")
endif()
if(WARNINGS_NUMERIC)
set(numerics "-Wdouble-promotion -Wsign-compare")
endif()
if(WARNINGS_MISSING_OVERRIDE)
set(missing-override "-Wsuggest-override")
endif()
set(noisy-warns "${suggest-final} ${numerics}")
endif()
set(clang-warns "")
if(CMAKE_COMPILER_IS_CLANG)
set(clang-warns "-Wweak-vtables")
endif()
set(_CXX_WARNS "")
set(_C_WARNS "")
if(WARNINGS_ENABLE)
set(usual-warns "-Wall -Wextra -pedantic -Wdelete-non-virtual-dtor -Wno-suggest-override -Wno-odr -Wno-attributes -Wcast-align -Wc++14-compat")
set(_CXX_WARNS "${usual-warns} ${clang-warns} ${noisy-warns} ${missing-override}")
set(_C_WARNS "-Wall -Wextra -pedantic -Wcast-align")
endif()
foreach(j C CXX)
foreach(i "" _DEBUG _RELEASE)
set(OVERRIDE_${j}_FLAGS${i} "" CACHE STRING "")
set(CMAKE_${j}_FLAGS${i} "${_${j}FLAGS${i}} ${OVERRIDE_${j}_FLAGS${i}}" CACHE STRING "" FORCE)
endforeach()
set(CMAKE_${j}_FLAGS "${_${j}FLAGS} ${_${j}_WARNS} ${OVERRIDE_${j}_FLAGS}" CACHE STRING "" FORCE)
endforeach()
foreach(j "" _DEBUG _RELEASE)
foreach(i MODULE EXE SHARED)
set(OVERRIDE_LDFLAGS${j} "" CACHE STRING "")
set(CMAKE_${i}_LINKER_FLAGS${j} "${_LDFLAGS${j}} ${OVERRIDE_LDFLAGS${j}}" CACHE STRING "" FORCE)
endforeach()
endforeach()
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -s" CACHE STRING "" FORCE)
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -s" CACHE STRING "" FORCE)
set(CMAKE_BUILD_TYPE_INIT "RELEASE")
if(NOT CMAKE_INSTALL_PREFIX)
set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install" CACHE PATH "" FORCE)
endif()
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