In the OpenBLAS root directory on a linux system, with emcc sdk already loaded by (in the emsdk directory, source ./emsdk_env.sh)
I was trying to use emcc to compile OpenBLAS by
make CC=emcc NOFORTRAN=1 HOSTCC=emcc BINARY=64 libs,
but it complained about cpuid.S.
I understand that it was a assembly file, so instead, I also tried to use clang:
make CC="clang --target=wasm32" NOFORTRAN=1 HOSTCC=clang BINARY=64 libs.
Then I got an error saying:
fatal error: error in backend: 64-bit WebAssembly (wasm64) is not
currently supported.
Does this mean that, one cannot use OpenBLAS to create a .a lib for static linking for Webassembly x64 usage? Has anybody got luck on similar usage? Thanks in advance!
I am using clang version 10.0.0, emcc version 1.39.13, and openBLAS latest code (0.3.9.dev.a).
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I tried almost a hundred things to make this works but nothing seems to be working.
I recently acquire a Mac book pro M1 MAX (so arm64 architecture), system provided by default with clang g++.
I wanted to install boost library. Using homebrew the 1.80 version was installed but I need to work on a project with the 1.65.1 version (I tried compiling my project with 1.80 version and tons of undefined symbols and errors were raised from boost library even if I have all of them, so I'm guessing I need to install the exact same version required)
so I decided to build and compile boost by myself following the boost guide
https://www.boost.org/doc/libs/1_65_1/more/getting_started/unix-variants.html
Following section 5.1 I tried to use the bootstrap script and this one fails using Darwin toolset. (apparently some Clang warning caused error). I resolve then by changing the boost source code like this :
https://github.com/boostorg/build/commit/48e9017139dd94446633480661e5447c7e0d8b1b
But there's still lot of issues during the compilation
I don't know what to do to be able to compile with clang, I don't even know if this will be compiled for arm64 architecture.
anyway I install gcc compiler and tried with gcc toolset.
./bootstrap --with-toolset=gcc
The bootstraps works but then running the b2 script cause a segmentation fault instantly and on every commands I tried (even the --help options raised an exception...).
Why is building boost so complicated on arm chipset ?
What can I do to build boost (either clang or gcc, arm or cross compiled universal library) ?
I'm desperate at this point.
Thanks for the help.
I tried everything
with clang (darwin)
with gcc
with options to add arm64 as architecture
changing the source code of boost to fix
I'm trying to debug a segfault in some code built with mingw-w64's version of gcc. Since no Windows build of gcc includes the Address Sanitizer, I've been looking for a version prior to 4.9 that would allow me to use Mudflap instead.
(It has to be 4.8 or earlier, since Mudflap was removed from gcc in 4.9 - see https://gcc.gnu.org/wiki/Mudflap_Pointer_Debugging)
I've tried using downloads of 4.8.1 and 4.6.4 from https://sourceforge.net/projects/mingwbuilds/files/host-windows/releases/ - but my builds all fail with cc1plus.exe: fatal error: mf-runtime.h: No such file or directory.
I have tried using the original MinGW as well, but 4.5 as downloaded from
https://sourceforge.net/projects/mingw/files/MinGW/Base/gcc/Version4/gcc-4.5.0-1/
just fails silently with error code 1.
Is there any site that still hosts a mingw-w64 build of gcc old enough to include mudflap? Preferably with SEH threads instead of SJLJ. If not, is there anywhere I can download a mingw-w64-compatible set of libraries and headers to install mudflap to work with an existing build?
Building TensorFlow with gcc version 4.8.5 or 5.4.0 gives an error:
bazel-out/host/bin/external/protobuf/protoc: /lib64/libstdc++.so.6:
version `GLIBCXX_3.4.20' not found (required by
bazel-out/host/bin/external/protobuf/protoc)
Tried to add linker flags in CROSSTOOL.tpl file in Tensorflow, however it didn't help.
You built your app with version of GCC that's newer than your host GCC. So your app uses symbols which are not present in host libstdc++ which causes runtime linker to fail.
You can solve this by linking your app with -Wl,-rpath,path/to/new/libs or setting LD_LIBRARY_PATH appropriately.
Using the How To Build GCC 4.8.2 ARM Cross-Compiler, I have installed and setup everything and it works just fine as mentioned in the post i.e., I was able to cross compile a simple C code. But, when I try to compile a simple GMP code, I get this error.
fatal error: gmp.h: No such file or directory
Compilation terminated
How should I fix this? My goal is to compile a gmp program. If possible, refer me to good tutorials.
Thanks!
If you want GMP compiled for the target system (ARM), you must compile it by itself using the newly built cross-compiler, not as a part of building GCC. GMP (along with MPFR, MPC, ISL, CLooG, etc.) being placed in the GCC toplevel source directory simply means that it gets compiled and linked for the cross-compiler you're building.
Since the cross-compiler will run on the host system, GMP will also be compiled for the host system, else linking the library would fail, and you wouldn't get a cross-compiler. It may sound silly, but there are reasons for doing it this way, such as buggy prebuilt packages provided by the package manager on the host system or merely to avoid installing those libraries on the host system when all you want is the cross-compilation toolchain.
I am trying to compile Cython code with the GCC compiler (which usually works like a charm), and as recommended on the "Using Parallelism" page I add the "-fopenmp" command to my setup file. However, when compiling I get the following error:
gcc.exe: libgomp.spec: No such file or directory
My version of gcc is 4.5.2, which I believe should support OpenMP just fine. I'm working on 64-bit Windows 7.
Any help would be appreciated!