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Diffstat (limited to 'Documentation/cross-building.md')
| -rw-r--r-- | Documentation/cross-building.md | 69 |
1 files changed, 66 insertions, 3 deletions
diff --git a/Documentation/cross-building.md b/Documentation/cross-building.md index afc0f07c9..247f933ac 100644 --- a/Documentation/cross-building.md +++ b/Documentation/cross-building.md @@ -1,7 +1,7 @@ Cross Compilation for ARM on Linux ================================== -Through cross compilation, on Linux it is possible to build CoreCLR for arm or arm64. +Through cross compilation, on Linux it is possible to build CoreRT for arm or arm64. Requirements ------------ @@ -21,7 +21,7 @@ and conversely for arm64: Generating the rootfs --------------------- -The `cross\build-rootfs.sh` script can be used to download the files needed for cross compilation. It will generate an Ubuntu 14.04 rootfs as this is what CoreCLR targets. +The `cross\build-rootfs.sh` script can be used to download the files needed for cross compilation. It will generate an Ubuntu 14.04 rootfs as this is what CoreRT targets. Usage: build-rootfs.sh [BuildArch] BuildArch can be: arm, arm64 @@ -38,7 +38,7 @@ and if you wanted to generate the rootfs elsewhere: Cross compiling CoreCLR ----------------------- -Once the rootfs has been generated, it will be possible to cross compile CoreCLR. If `ROOTFS_DIR` was set when generating the rootfs, then it must also be set when running `build.sh`. +Once the rootfs has been generated, it will be possible to cross compile CoreRT. If `ROOTFS_DIR` was set when generating the rootfs, then it must also be set when running `build.sh`. So, without `ROOTFS_DIR`: @@ -49,3 +49,66 @@ And with: $ ROOTFS_DIR=~/coreclr-cross/arm ./build.sh arm debug verbose clean cross As usual the resulting binaries will be found in `bin/Product/BuildOS.BuildArch.BuildType/` + +Using CoreRT for cross compiling under arm on x86 host +----------------------- +It is possible to use CoreRT for compiling under arm/armel on x86 host (or on x64 machine using roots). + +1. Build CoreCLR for x86 (`checked` version) +``` +sudo ./cross/build-rootfs.sh x86 xenial +./build.sh clang3.9 x86 checked verbose cross skiptests +``` + +2. Build CoreFX (`Debug` version) +3. Build CoreRT for armel, x64, x86 +``` +sudo ./cross/build-rootfs.sh armel tizen +sudo ./cross/build-rootfs.sh x86 xenial +./build.sh clang3.9 armel debug verbose cross +./build.sh debug verbose skiptests +./build.sh clang3.9 x86 debug verbose cross skiptests +``` + +4. Copy necessary binaries to working directory (in x86 rootfs) +``` +cp ${CORECLR}/bin/Product/Linux.x86.Checked ${WORKING_DIR} +cp ${CORERT}/bin/Linux.x86.Debug/tools/ilc.dll ${WORKING_DIR} +cp ${CORERT}/bin/Linux.x86.Debug/tools/ILCompiler.* ${WORKING_DIR} +cp ${CORERT}/bin/Linux.x86.Debug/tools/System.CommandLine.dll ${WORKING_DIR} +cp ${CORERT}/bin/Linux.x86.Debug/tools/Microsoft.DiaSymReader.dll ${WORKING_DIR} +cp ${CORERT}/bin/Linux.x86.Debug/tools/jitinterface.so ${WORKING_DIR} +cp -r ${CORERT}/bin/Linux.x86.Debug/framework ${WORKING_DIR} + +# Copy CoreRT sdk binaries from target (armel) output folder +cp -r ${CORERT}/bin/Linux.armel.Debug/sdk ${WORKING_DIR} +``` + +5. Rename RyuJIT compiler library +``` +# Use cross-compiler library as default for ILC +cp ${WORKING_DIR}/libarmelnonjit.so ${WORKING_DIR}/libclrjitilc.so + +# ... or ARM version instead if it's needed +# cp ${WORKING_DIR}/libprotojit.so ${WORKING_DIR}/libclrjitilc.so +``` + +6. Build libobjwriter. You have to compile it on x86 chroot. Before compiling put coreclr/bin/Product/Linux.x86.Debug/ to some folder on x86 chroot as well. Versions which to used are mentioned on GitHub: +https://github.com/dotnet/corert/issues/3776#issuecomment-337682166 + + And apply patch: +https://gist.github.com/alpencolt/ec75fcc05d8c4ffbf143a052f7c115a8 +``` +mkdir build +cd build +cmake ../ -DWITH_CORECLR=../../coreclr/bin/Product/Linux.x86.Debug/ -DLLVM_TARGET_ARCH="ARM;X86" -DLLVM_TARGETS_TO_BUILD="ARM;X86" -DLLVM_DEFAULT_TARGET_TRIPLE=thumbv7-linux-gnueabi -DCMAKE_BUILD_TYPE=Release -DLLVM_BUILD_LLVM_DYLIB=1 -DLLVM_LINK_LLVM_DYLIB=1 -DLLVM_OPTIMIZED_TABLEGEN=1 -DHAVE_POSIX_SPAWN=0 -DLLVM_ENABLE_PIC=1 -DLLVM_BUILD_TESTS=0 -DLLVM_ENABLE_DOXYGEN=0 -DLLVM_INCLUDE_DOCS=0 -DLLVM_INCLUDE_TESTS=0 -DLLVM_BINUTILS_INCDIR=/usr/include +make -j8 objwriter +``` + +7. And to execute use: +``` +./corerun ilc.dll --verbose @Hello.ilc.rsp + +# For linking +clang-3.9 -target arm-linux-gnueabi --sysroot=corert/cross/rootfs/armel -Bcorert/cross/rootfs/armel/usr/lib/gcc/armv7l-tizen-linux-gnueabi/6.2.1 -Lcorert/cross/rootfs/armel/usr/lib/gcc/armv7l-tizen-linux-gnueabi/6.2.1 Hello.o -o Hello corert/bin/Linux.armel.Debug/sdk/libbootstrapper.a corert/bin/Linux.armel.Debug/sdk/libRuntime.a corert/bin/Linux.armel.Debug/sdk/libSystem.Private.CoreLib.Native.a corert/bin/Linux.armel.Debug/framework/System.Native.a corert/bin/Linux.armel.Debug/framework/libSystem.Globalization.Native.a -g -Wl,-rpath,'$ORIGIN' -pthread -lstdc++ -ldl -lm -luuid -lrt -fPIC +``` |