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if (WIN32)
set (CMAKE_SYSTEM_NAME Windows)
set (CMAKE_GENERATOR_PLATFORM "x86")
elseif(APPLE)
set (CMAKE_OSX_ARCHITECTURES "i386")
elseif(MINGW)
set (CMAKE_SYSTEM_NAME Windows)
set (TOOLCHAIN_PREFIX i686-w64-mingw32)
set (CMAKE_C_COMPILER ${TOOLCHAIN_PREFIX}-gcc)
set (CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}-g++)
set (CMAKE_RC_COMPILER ${TOOLCHAIN_PREFIX}-windres)
set (CMAKE_Fortran_COMPILER ${TOOLCHAIN_PREFIX}-gfortran)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m32" CACHE STRING "c++ flags")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32" CACHE STRING "c flags")
set (LIB32 /usr/lib) # Fedora
if (EXISTS "/usr/lib32")
set (LIB32 /usr/lib32) # Arch, Solus
endif ()
set (CMAKE_SYSTEM_LIBRARY_PATH ${LIB32} CACHE STRING "system library search path" FORCE)
set (CMAKE_LIBRARY_PATH ${LIB32} CACHE STRING "library search path" FORCE)
# this is probably unlikely to be needed, but just in case
set (CMAKE_EXE_LINKER_FLAGS "-m32 -L${LIB32}" CACHE STRING "executable linker flags" FORCE)
set (CMAKE_SHARED_LINKER_FLAGS "-m32 -L${LIB32}" CACHE STRING "shared library linker flags" FORCE)
set (CMAKE_MODULE_LINKER_FLAGS "-m32 -L${LIB32}" CACHE STRING "module linker flags" FORCE)
# on Fedora and Arch and similar, point pkgconfig at 32 bit .pc files. We have
# to include the regular system .pc files as well (at the end), because some
# are not always present in the 32 bit directory
if (EXISTS "${LIB32}/pkgconfig")
set (ENV{PKG_CONFIG_LIBDIR} ${LIB32}/pkgconfig:/usr/share/pkgconfig:/usr/lib/pkgconfig:/usr/lib64/pkgconfig)
endif ()
set (CMAKE_FIND_ROOT_PATH /usr/${TOOLCHAIN_PREFIX})
set (CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set (CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set (CMAKE_CROSSCOMPILING_EMULATOR wine)
include_directories(/usr/${TOOLCHAIN_PREFIX}/include)
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS On CACHE BOOL "Export windows symbols")
else ()
set (CMAKE_SYSTEM_NAME Linux)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m32" CACHE STRING "c++ flags")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32" CACHE STRING "c flags")
set (LIB32 /usr/lib) # Fedora
if (EXISTS "/usr/lib32")
set (LIB32 /usr/lib32) # Arch, Solus
endif ()
set (CMAKE_SYSTEM_LIBRARY_PATH ${LIB32} CACHE STRING "system library search path" FORCE)
set (CMAKE_LIBRARY_PATH ${LIB32} CACHE STRING "library search path" FORCE)
# this is probably unlikely to be needed, but just in case
set (CMAKE_EXE_LINKER_FLAGS "-m32 -L${LIB32}" CACHE STRING "executable linker flags" FORCE)
set (CMAKE_SHARED_LINKER_FLAGS "-m32 -L${LIB32}" CACHE STRING "shared library linker flags" FORCE)
set (CMAKE_MODULE_LINKER_FLAGS "-m32 -L${LIB32}" CACHE STRING "module linker flags" FORCE)
# on Fedora and Arch and similar, point pkgconfig at 32 bit .pc files. We have
# to include the regular system .pc files as well (at the end), because some
# are not always present in the 32 bit directory
if (EXISTS "${LIB32}/pkgconfig")
set (ENV{PKG_CONFIG_LIBDIR} ${LIB32}/pkgconfig:/usr/share/pkgconfig:/usr/lib/pkgconfig:/usr/lib64/pkgconfig)
endif ()
# where is the target environment
set (CMAKE_FIND_ROOT_PATH ${LIB32})
# search for programs in the build host directories
set (CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
# for libraries and headers in the target directories
set (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set (CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
endif ()
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