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#
# CMake Toolchain file for cross compiling OpenSCAD tests linux->mingw-win32
# --------------------------------------------------------------------------
#
# This will only work under linux using 'wine'. It has not been tested under
# mingw32 nor MSVC
#
# Prerequisites: mingw-cross-env, ImageMagick 6.5.9.3 or newer, wine
#
# Usage:
#
# follow the README.md to do a mingw-cross build of openscad.exe
# the setenv-mingw-xbuild.sh script will set MXEDIR
# cd openscad/tests && mkdir build-mingw32 && cd build-mingw32
# # set env variables:
# OPENSCADPATH=../../libraries # (to find MCAD for some tests)
# cmake .. -DCMAKE_TOOLCHAIN_FILE=../CMingw-cross-env.cmake \
# -DMINGW_CROSS_ENV_DIR=$MXEDIR
# make # (should proceed as normal.)
# now run 'ctest' on your *nix machine.
# The test .exe programs should run under wine
# imagemagick's "convert" comparer will be your actual linux version.
# The pretty printer won't automatically work after the tests. You have to run
# it manually by typing 'wine test_pretty_print.exe'
#
# to debug finding MCAD with OPENSCADPATH, try something like this:
#
# strace -f ctest -R dumptest.*use 2>&1 | grep servos.scad
#
# See also:
#
# http://lists.gnu.org/archive/html/mingw-cross-env-list/2010-11/threads.html#00078
# (thread "Qt with Cmake")
# http://lists.gnu.org/archive/html/mingw-cross-env-list/2011-01/threads.html#00012
# (thread "Qt: pkg-config files?")
# http://mingw-cross-env.nongnu.org/#requirements
# http://www.vtk.org/Wiki/CMake_Cross_Compiling
# https://bitbucket.org/muellni/mingw-cross-env-cmake/src/2067fcf2d52e/src/cmake-1-toolchain-file.patch
# http://code.google.com/p/qtlobby/source/browse/trunk/toolchain-mingw.cmake
# http://gcc.gnu.org/onlinedocs/gcc-3.4.6/gcc/Link-Options.html
# Makefile.Release generated by qmake
# cmake's FindQt4.cmake & Qt4ConfigDependentSettings.cmake files
# mingw-cross-env's qmake.conf and *.prl files
# mingw-cross-env's pkg-config files in usr/i686-pc-mingw32/lib/pkgconfig
# (may have to add to env var PKG_CONFIG_PATH to find qt .pc files)
# http://www.vtk.org/Wiki/CMake:How_To_Find_Libraries
#
#
# Notes:
#
# To debug the build process run "make VERBOSE=1". 'strace -f' is also useful.
#
# This file is actually called multiple times by cmake, so various 'if NOT set'
# guards are used to keep programs from running twice.
#
# The test will not currently run under win32 because the ctest harness
# is created by cmake on the machine that it is called on, not on the
# machine it is targeting.
#
#
# Part 1. Find *nix-ImageMagick
#
# The tests run under Wine under *nix. Therefore we need to find the
# ImageMagick comparison program on the *nix machine. It must be
# searched before the 'cross-compile' environment is setup.
#
if (NOT imagemagick_cross_set)
find_package(ImageMagick COMPONENTS convert REQUIRED)
message(STATUS "ImageMagick convert executable found: " ${ImageMagick_convert_EXECUTABLE})
set( SKIP_IMAGEMAGICK TRUE )
set( imagemagick_cross_set )
endif()
#
# Part 2. cross-compiler setup
#
set(MINGW_CROSS_ENV_DIR $ENV{MINGW_CROSS_ENV_DIR})
set(BUILD_SHARED_LIBS OFF)
set(CMAKE_SYSTEM_NAME Windows)
set(MSYS 1)
set(CMAKE_FIND_ROOT_PATH ${MINGW_CROSS_ENV_DIR}/usr/i686-pc-mingw32)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_C_COMPILER ${MINGW_CROSS_ENV_DIR}/usr/bin/i686-pc-mingw32-gcc)
set(CMAKE_CXX_COMPILER ${MINGW_CROSS_ENV_DIR}/usr/bin/i686-pc-mingw32-g++)
set(CMAKE_RC_COMPILER ${MINGW_CROSS_ENV_DIR}/usr/bin/i686-pc-mingw32-windres)
set(QT_QMAKE_EXECUTABLE ${MINGW_CROSS_ENV_DIR}/usr/bin/i686-pc-mingw32-qmake)
set(PKG_CONFIG_EXECUTABLE ${MINGW_CROSS_ENV_DIR}/usr/bin/i686-pc-mingw32-pkg-config)
set(CMAKE_BUILD_TYPE RelWithDebInfo)
#
# Part 3. library settings for mingw-cross-env
#
set( Boost_USE_STATIC_LIBS ON )
set( Boost_USE_MULTITHREADED ON )
set( Boost_COMPILER "_win32" )
# set( Boost_DEBUG TRUE ) # for debugging cmake's FindBoost, not boost itself
set( OPENSCAD_LIBRARIES ${CMAKE_FIND_ROOT_PATH} )
set( EIGEN2_DIR ${CMAKE_FIND_ROOT_PATH} )
set( CGAL_DIR ${CMAKE_FIND_ROOT_PATH}/lib/CGAL )
set( GLEW_DIR ${CMAKE_FIND_ROOT_PATH} )
#
# Qt4
#
# To workaround problems with CMake's FindQt4.cmake when combined with
# mingw-cross-env (circa early 2012), we here instead use pkg-config. To
# workaround Cmake's insertion of -bdynamic, we stick 'static' on the
# end of QT_LIBRARIES
#
set(QT_QMAKE_EXECUTABLE ${MINGW_CROSS_ENV_DIR}/usr/bin/i686-pc-mingw32-qmake)
set(QT_MOC_EXECUTABLE ${MINGW_CROSS_ENV_DIR}/usr/bin/i686-pc-mingw32-moc)
set(QT_UIC_EXECUTABLE ${MINGW_CROSS_ENV_DIR}/usr/bin/i686-pc-mingw32-uic)
function(mingw_cross_env_find_qt)
# called from CMakeLists.txt
set(PKGC_DEST ${MINGW_CROSS_ENV_DIR}/usr/i686-pc-mingw32/lib/pkgconfig)
set(QT_PKGC_SRC ${MINGW_CROSS_ENV_DIR}/usr/i686-pc-mingw32/qt/lib/pkgconfig/)
file(COPY ${QT_PKGC_SRC} DESTINATION ${PKGC_DEST} FILES_MATCHING PATTERN "*.pc")
find_package( PkgConfig )
pkg_check_modules( QTCORE QtCore )
pkg_check_modules( QTGUI QtGui )
pkg_check_modules( QTOPENGL QtOpenGL )
set(QT_INCLUDE_DIRS ${QTCORE_INCLUDE_DIRS} ${QTGUI_INCLUDE_DIRS} ${QTOPENGL_INCLUDE_DIRS})
set(QT_CFLAGS_OTHER "${QTCORE_CFLAGS_OTHER} ${QTGUI_CFLAGS_OTHER} ${QTOPENGL_CFLAGS_OTHER}")
set(QT_LIBRARIES "${QTCORE_STATIC_LDFLAGS} ${QTGUI_STATIC_LDFLAGS} ${QTOPENGL_STATIC_LDFLAGS};-static")
set(QT_INCLUDE_DIRS ${QT_INCLUDE_DIRS} PARENT_SCOPE)
set(QT_CFLAGS_OTHER ${QT_CFLAGS_OTHER} PARENT_SCOPE)
set(QT_LIBRARIES ${QT_LIBRARIES} PARENT_SCOPE)
endfunction()
function(mingw_cross_env_info)
message(STATUS "QT INCLUDE_DIRS: ${QT_INCLUDE_DIRS}")
message(STATUS "QT LIBRARIES: ${QT_LIBRARIES}")
message(STATUS "QT_CFLAGS_OTHER: ${QT_CFLAGS_OTHER}")
endfunction()
#
# Part 4. -D definitions
#
if( NOT cross_defs_set )
add_definitions( -DGLEW_STATIC ) # FindGLEW.cmake needs this
add_definitions( -DBOOST_STATIC )
add_definitions( -DBOOST_THREAD_USE_LIB )
add_definitions( -DUNICODE ) # because qmake does it
set(cross_defs_set 1)
endif()
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