search for: baremetalarm

...and fresh untar of musl, I don't think there's a difference > > > 3) Build clang w/ baremetal cache, pointing it at the partially built > > > sysroot. > > cmake -G 'Unix Makefiles' -DBAREMETAL_ARMV7EM_SYSROOT=~/arm-sysroot -C ../../code/clang/cmake/caches/BaremetalARM.cmake ../../code/clang > > Sorry, I wasn't explicit enough. You need to define all of the variables > that the cache is looking for. > > > loading initial cache file ../../code/clang/cmake/caches/BaremetalARM.cmake > > -- Found LLVM_CONFIG as /usr/local/bin/llvm-config &...

...odebase, but same name as the llvm one). > > > 3C) A c++ standard library. llvm provides this as libcxx. There's also > > > libstdc++. > > > > > > > > > To start with, I recommend using the cmake cache in: > > > $clang_src/cmake/caches/BaremetalARM.cmake. You'll want the stuff in it that > > > references the armv7em-none-eabi triple. To use it, do something like: > > > > > > $ cmake -G <build system> > > > -DBAREMETAL_ARMV7EM_SYSROOT=path/to/your/v7em/sysroot -C > > > path/to/BaremetalAR...

...mp/barearm-sysroot/ # Thanx for the tip! So I tried to use it, and clang/llvm build, but compiler-rt fails: # cmake -G 'Unix Makefiles' -DCMAKE_BUILD_TYPE=Release -DBAREMETAL_ARMV7EM_SYSROOT=/tmp/barearm-sysroot -DCMAKE_INSTALL_PREFIX=/tmp/barearm-sysroot -C ../../source/llvm/cmake/caches/BaremetalARM.cmake ../../source/llvm # make -j4 https://gist.github.com/anonymous/85cd5081a6d46a63731d970ee95b20b4 This is the BaremetalARM.cmake: https://gist.github.com/anonymous/ff3248f08ddc99361dcc009e9f4c1020 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc...

...d another from the old HP > libunwind project (different codebase, but same name as the llvm one). > 3C) A c++ standard library. llvm provides this as libcxx. There's also > libstdc++. > > > To start with, I recommend using the cmake cache in: > $clang_src/cmake/caches/BaremetalARM.cmake. You'll want the stuff in it that > references the armv7em-none-eabi triple. To use it, do something like: > > $ cmake -G <build system> > -DBAREMETAL_ARMV7EM_SYSROOT=path/to/your/v7em/sysroot -C > path/to/BaremetalARM.cmake [other CMake Options] > > Assuming y...

...but what I want to build is "libclang_rt.builtins.arm.a". My CMake options are: cmake -G Ninja DBAREMETAL_ARMV6M_SYSROOT=${ARMEABI5GCC} -DBAREMETAL_ARMV7M_SYSROOT=${ARMEABI5GCC} -DBAREMETAL_ARMV7EM_SYSROOT=${ARMEABI5GCC} -DCMAKE_BUILD_TYPE=Release -C/home/llvm-project/clang/cmake/caches/BaremetalARM.cmake /home/llvm-project/llvm/runtimes/compiler-rt with echo $ARMEABI5GCC /home/gcc-arm-none-eabi-5_4-2016q3/arm-none-eabi Does anyone know how to fix this problem? Thanks in advance! Xia Zhou -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.or...

On Wed, Aug 02, 2017 at 05:48:20PM -0600, Jonathan Roelofs wrote: > I strongly recommend against using the host's headers when cross compiling. > You need to either find or build an arm-none-eabi sysroot, and use the > --sysroot= flag. > > > Jon OK, that's a start. I found https://www.llvm.org/docs/HowToCrossCompileLLVM.html. Is it enough for --sysroot? In case it is,

...different codebase, but same name as the llvm one). >>> 3C) A c++ standard library. llvm provides this as libcxx. There's also >>> libstdc++. >>> >>> >>> To start with, I recommend using the cmake cache in: >>> $clang_src/cmake/caches/BaremetalARM.cmake. You'll want the stuff in it that >>> references the armv7em-none-eabi triple. To use it, do something like: >>> >>> $ cmake -G <build system> >>> -DBAREMETAL_ARMV7EM_SYSROOT=path/to/your/v7em/sysroot -C >>> path/to/BaremetalARM.cmake [...

.../../gcc-arm-none-eabi-9-2019-q4-major/arm-none-eabi/ > > -DBAREMETAL_ARMV7M_SYSROOT=../../gcc-arm-none-eabi-9-2019-q4-major/arm-none-eabi/ > > -DBAREMETAL_ARMV7EM_SYSROOT=../../gcc-arm-none-eabi-9-2019-q4-major/arm-none-eabi/ > > -DCMAKE_BUILD_TYPE=Release -C ../clang/cmake/caches/BaremetalARM.cmake > > ../llvm > > That particular recipe predates the monorepo, and relied upon compiler-rt being checked out in the runtimes subdirectory. I suspect that this will likely not work with the monorepo. > > Peter > > ________________________________________ > From: llvm-...

...-DBAREMETAL_ARMV6M_SYSROOT=../../gcc-arm-none-eabi-9-2019-q4-major/arm-none-eabi/ -DBAREMETAL_ARMV7M_SYSROOT=../../gcc-arm-none-eabi-9-2019-q4-major/arm-none-eabi/ -DBAREMETAL_ARMV7EM_SYSROOT=../../gcc-arm-none-eabi-9-2019-q4-major/arm-none-eabi/ -DCMAKE_BUILD_TYPE=Release -C ../clang/cmake/caches/BaremetalARM.cmake ../llvm But with this, I am getting this error attached to the email. Is there something I am missing here? Is there any update to the cross-compilation guide? My end goal is cross-compiling C++ programs for ARM on x86. Any pointers for this would be helpful. Thanks, Arslan -------------- n...

Dear LLVM developers, Hello, I'm trying to find a way of cross-compiling my c code against Baremetal Cortex-M device (so target triple will be arm-none-eabi) only using LLVM/Clang, and not using anything from GNU (ld or libc). I'm doing this to know which one of LLVM/clang and GCC produces smaller flash image size because saving flash is a big deal in our projects. 1) When I just follow

...EABIGCC=/path/to/gcceabi/arm-none-eabi > cmake \ > -G Ninja\ > -DBAREMETAL_ARMV6M_SYSROOT=${ARMEABIGCC}\ > -DBAREMETAL_ARMV7M_SYSROOT=${ARMEABIGCC}\ > -DBAREMETAL_ARMV7EM_SYSROOT=${ARMEABIGCC}\ > -DCMAKE_BUILD_TYPE=Release\ > -C/path/to/llvm/tools/clang/cmake/caches/BaremetalARM.cmake \ > /path/to/llvm > > The cache file requires clang and lld. From the build directory they > will go into lib/clang. That worked for me (TM). Hopefully if you can > edit the paths it will work for you. My guess is that you'll want to > set ARMEABIGCC=/home/crichter/Dow...

...mpiler-rt according to the mentioned baremetal recipe some time ago with > > cmake –G Ninja –DBAREMETAL_ARMV6M_SYSROOT=${ARMEABI5GCC} -DBAREMETAL_ARMV7M_SYSROOT=${ARMEABI5GCC}- DBAREMETAL_ARMV7EM_SYSROOT=${ARMEABI5GCC} –DCMAKE_BUILD_TYPE=Release –C /home/llvm_4rt/llvm/tools/clang/cmake/caches/BaremetalARM.cmake /home/llvm_4rt/llvm/ > > where ARMEABI5GCC=/home/crichter/Downloads/gcc-arm-none-eabi-5_4-2016q3/arm-none-eabi is from the sysroot download site you gave me back then. > > That resulted in a libclang_rt.builtins.a file which I considered to be the right one to use now, but neither...

...C=/path/to/gcceabi/arm-none-eabi > cmake \ > -G Ninja\ > -DBAREMETAL_ARMV6M_SYSROOT=${ARMEABIGCC}\ > -DBAREMETAL_ARMV7M_SYSROOT=${ARMEABIGCC}\ > -DBAREMETAL_ARMV7EM_SYSROOT=${ARMEABIGCC}\ > -DCMAKE_BUILD_TYPE=Release\ > -C/path/to/llvm/tools/clang/cmake/caches/BaremetalARM.cmake \ > /path/to/llvm > > The cache file requires clang and lld. From the build directory they > will go into lib/clang. That worked for me (TM). Hopefully if you can > edit the paths it will work for you. My guess is that you'll want to > set ARMEABIGCC=/home/crichter/Do...

...tains sysroot-glibc-8.2-x86_64 and /arm-linux-gnueabihf/gcc-arm contains gcc-arm-8.2 for Aarch32 hard float from https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads. This resulted in successfully building libclang_rt.builtins-armhf.a So next, I tried to use the cmake recipe for BaremetalARM as in the documentation. Therefore, I moved the compiler-rt directory from llvm/projects to llvm/runtimes. I downloaded the latest updates of gcc-arm-none-eabi6/7/8 from https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads and tried to build in a new directory. But whether I ga...

...;> -G Ninja\ > >> -DBAREMETAL_ARMV6M_SYSROOT=${ARMEABIGCC}\ > >> -DBAREMETAL_ARMV7M_SYSROOT=${ARMEABIGCC}\ > >> -DBAREMETAL_ARMV7EM_SYSROOT=${ARMEABIGCC}\ > >> -DCMAKE_BUILD_TYPE=Release\ > >> -C/path/to/llvm/tools/clang/cmake/caches/BaremetalARM.cmake \ > >> /path/to/llvm > >> > >> The cache file requires clang and lld. From the build directory they > >> will go into lib/clang. That worked for me (TM). Hopefully if you can > >> edit the paths it will work for you. My guess is that you'll...

...anly modify the build, and verify everything actually works on > trunk. It looks like there's a CMake variable > COMPILER_RT_BAREMETAL_BUILD which is supposed to be turned on for this sort of environment? Yes, that's exactly what that variable is for. See also: clang/cmake/caches/BaremetalARM.cmake. I haven't taught this how to do the rest of the runtime bits (unwinder/libcxxabi/libcxx), but plan to at some point. > > 2. Changing the compiler and compiler-rt to use __start and __end > symbols to find the sections, rather than .init code. This isn't > strictly ne...

Hi all, I think using code coverage on baremetal has come up once or twice on llvmdev, but I don't think anyone has actually written up how the workflow works, or what issues come up.  This description is based on work done together with my colleague Weiming Zhao. By "baremetal" here, I mean an embedded environment without an operating system.  We specifically used a ARM target

Hello again! Tried out the small Hello World Setup, worked as intended: root at christian-forschung-virtual-machine:/home/progs# clang -v --target=arm-linux-gnueabihf hello.c -o hello -fuse-ld=lld clang version 8.0.0 (https://git.llvm.org/git/clang.git/ a152c7a4b7ba8f4cb9532ead9a38a7121db43d50) (https://git.llvm.org/git/llvm.git/ 1959ce6f3e01241919968ac1911fd45660239d23) Target: