similar to: Building an LLVM cross-compiler

> On 18 Nov 2019, at 22:11, Peter Smith <peter.smith at linaro.org> wrote: > > On Mon, 18 Nov 2019 at 17:06, Sergej Jaskiewicz <jaskiewiczs at icloud.com <mailto:jaskiewiczs at icloud.com>> wrote: >> >> >> >> On 18 Nov 2019, at 19:55, Peter Smith <peter.smith at linaro.org> wrote: >> >> On Mon, 18 Nov 2019 at 15:23, Sergej

Hi Peter, On Wed, 26 Feb 2020 at 18:37, Peter Smith via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > Hello Arslan, > > > I am guessing I can borrow libraries such as lc and lm from GCC > > arm-none-eabi*, but for clang_rt.builtins-arm.a (which I thought > > should've been built with LLVM build but I couldn't find that library > > in my build

Hello Peter and Lists, thanks a lot, that way it worked out! The final cmake was cmake -G "Ninja" ../llvm/projects/compiler-rt/ -DCOMPILER_RT_BUILD_BUILTINS=ON -DCOMPILER_RT_BUILD_SANITIZERS=OFF -DCOMPILER_RT_BUILD_XRAY=OFF -DCOMPILER_RT_BUILD_LIBFUZZER=OFF -DCOMPILER_RT_BUILD_PROFILE=OFF -DCMAKE_C_COMPILER=/usr/local/myclang/bin/clang -DCMAKE_AR=/usr/local/myclang/bin/llvm-ar

Hello again Christian, I've posted https://reviews.llvm.org/D55709 to see if we can get the documentation on how to cross-compile compiler-rt improved. I'll be out of office until next year so I may be a bit slow to respond to any follow ups. Peter On Thu, 13 Dec 2018 at 17:10, Peter Smith <peter.smith at linaro.org> wrote: > > Hello Christian, > > I've just

Hello Christian, I've put some comments inline, On Sun, 3 Feb 2019 at 13:11, Christian Richter <christian.richter at hsu-hh.de> wrote: > > Hello again, > > so after I successfully build the compiler-rt for armv6 I tried to > actually use it in compiling a small helloworld for a baremetal arm > (consisting of barehelloCLANG.c and a small io.h + io.c) , but the >

Hello Christian, I'd expect that adding the library paths (-L) from gcc -v should fix the unable to find -lc, -lm but it won't fix the -lclang_rt.builtins-armv6m.a . To get clang_rt.builtins-armv6m.a you will need to cross compile compiler-rt for v6m and copy it to /usr/local/myclang/lib/clang/8.0.0/lib/baremetal . Beware that building compiler-rt for v6m does need quite a bit of fighting

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:

Hello Christian, I reran my script with a similar cmake command to yours. After the build finished the following command from the build directory gave me: find . -name \*builtins.a ./lib/clang/9.0.0/armv6m-none-eabi/lib/libclang_rt.builtins.a ./lib/clang/9.0.0/armv7m-none-eabi/lib/libclang_rt.builtins.a ./lib/clang/9.0.0/armv7em-none-eabi/lib/libclang_rt.builtins.a I hope you see something like

> On 18 Nov 2019, at 19:55, Peter Smith <peter.smith at linaro.org> wrote: > > On Mon, 18 Nov 2019 at 15:23, Sergej Jaskiewicz <jaskiewiczs at icloud.com <mailto:jaskiewiczs at icloud.com>> wrote: >> >> Hi Peter, >> >> Thanks for your response. >> >> On 18 Nov 2019, at 17:44, Peter Smith <peter.smith at linaro.org> wrote:

Hello, on the problems cross-building compiler-rt: Tried to follow https://llvm.org/docs/HowToCrossCompileBuiltinsOnArm.html which lead to this cmake: cmake -G "Ninja" ../llvm/projects/compiler-rt/ -DCOMPILER_RT_BUILD_BUILTINS=ON -DCOMPILER_RT_BUILD_SANITIZERS=OFF -DCOMPILER_RT_BUILD_XRAY=OFF -DCOMPILER_RT_BUILD_LIBFUZZER=OFF -DCOMPILER_RT_BUILD_PROFILE=OFF

> Run it through its phases and report any bugs you find! [ 1495s] CMake Warning (dev) at projects/dragonegg/CMakeLists.txt:34 (get_target_property): [ 1495s] Policy CMP0026 is not set: Disallow use of the LOCATION target property. [ 1495s] Run "cmake --help-policy CMP0026" for policy details. Use the cmake_policy [ 1495s] command to set the policy and suppress this warning. [

Folks, I'm having a look at LLD and I need some guidance... I know it's not production ready for x86 and ARM (the idea is to make it so). My steps: I've added it to tools/lld and ran CMake again (on x86_64) on a standard release build (static linking). It works, builds but I see one unit test error: Note: Google Test filter = InputGraphTest.Observer [==========] Running 1 test from

On Fri, 6 Nov 2020, Cág via llvm-dev wrote: > The process, in my opinion, should go like this: > 1. Get the sources (llvm, lld, compiler-rt, libunwind, libcxx...). > 2. Build an LLVM cross-compiler toolchain using native distribution's > compiler (i.e. build an x86_64 clang executable that targets aarch64). > 3. Cross-compile libc and other libraries/dependencies to run the

I am currently trying to compile a pretty simple program to work on an experimental board. It contains an (FPGA-version of) an ARMv4 processor. So basically, I try this (on my Ubuntu 18.04.1 LTS): clang -v --target=arm-none-eabi -c barehello.c -o barehelloCLANG.o clang -v --target=arm-none-eabi -c io.c -o io.o clang -v --target=arm-none-eabi barehelloCLANG.o io.o -o helloCLANGstatic -static

> On Nov 2, 2015, at 10:10 AM, Anton Korobeynikov <anton at korobeynikov.info> wrote: > >> Today building this toolchain with CMake is impossible because you cannot configure the cross-compiled builtins. The failure is a result of CMake’s try_compile function always testing a full compile then link operation. When bootstrapping a cross-compiler this will always fail because

Hi everyone, Just a quick update. Here's what worked for me here*: 1. Get the sources. 2. Build clang, llvm, lld. 3. Install libc headers to a sysroot. 4. Build compiler-rt builtins and crt with the freshly-built clang. One need to set C_COMPILER_WORKS to skip the checks. 5. Build libc.a/libc.so Now the freshly-built clang can compile a "Hello, World" program. @Martin Storsjö

> -----Original Message----- > From: llvm-dev <llvm-dev-bounces at lists.llvm.org> On Behalf Of Cág via > llvm-dev > Sent: Tuesday, November 10, 2020 8:49 AM > To: llvm-dev at lists.llvm.org > Subject: Re: [llvm-dev] Building an LLVM cross-compiler > > Hi everyone, > > Just a quick update. Here's what worked for me here*: > 1. Get the sources. > 2.

The build for the Android sanitizers is unique in that it needs to link against the Android system libraries to create a shared object and its test suites. The current solution to build ASan is to drop the compiler-rt repo into the llvm source tree and cross-compile the llvm build for Android. This is a bit awkward for few reasons: 1) Not all of llvm can be cross-compiled for Android.

I need to build libLLVM (individual static libraries are fine at the moment) using mingw-w64 cross compilers, i686-w64-mingw32-gcc and (separately) x86_64-w64-mingw32-gcc. I'd like this to work from both Linux and Cygwin build environments. With autotools, this worked fine: ../configure --host=i686-w64-mingw32 and that's it (with mingw32-gcc-c++ installed on Fedora 23, also works fine on

Hello, I'm facing some problems while building LLVM 2.8 shared libraries from source using CMake: cmake -DBUILD_SHARED_LIBS=true .. This is the output error: CMake Error: The inter-target dependency graph contains the following strongly connected component (cycle): "LLVMARMCodeGen" of type SHARED_LIBRARY depends on "LLVMARMAsmPrinter"