how to build in Alpine OS?

[athxx]

I trying to build wasm files in alpine linux os, but when I was trying to build, it shows these errors

make: cmake /www/slm/srv -DEMCC_BUILD_TYPE=Release
CMake Warning (dev) in CMakeLists.txt:
  No project() command is present.  The top-level CMakeLists.txt file must
  contain a literal, direct call to the project() command.  Add a line of
  code such as

    project(ProjectName)

  near the top of the file, but after cmake_minimum_required().

  CMake is pretending there is a "project(Project)" command on the first
  line.
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Error at /www/slm/emsdk/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake:129 (message):
  Failed to fetch compiler version information with command
  "'/www/slm/emsdk/upstream/emscripten/emcc' -v"! Process returned with error
  code 1.
Call Stack (most recent call first):
  /usr/share/cmake/Modules/CMakeDetermineSystem.cmake:124 (include)
  CMakeLists.txt

CMake Error: CMake was unable to find a build program corresponding to "Unix Makefiles".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
-- Configuring incomplete, errors occurred!

I am sure already install make cmake g++ gcc xz linux-headers xz tar bzip2 libgcc musl-dev, and it already initial nodejs and binary but it always cannot find make

and when I check emcc -v, it shows errors

emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 2.0.30 (f782b50a7f8dded7cd0e2c7ee4fed41ab743f5c0)
emcc: error: '/www/slm/emsdk/upstream/bin/clang -v -target wasm32-unknown-emscripten' failed: [Errno 2] No such file or directory: '/www/slm/emsdk/upstream/bin/clang'

but in /www/slm/emsdk/upstream/bin this directory, all files are exists

clang                     lld                       llvm-dwarfdump            llvm-objdump              llvm-strings              wasm-ctor-eval            wasm-metadce              wasm-split                wasm32-wasi-clang
clang++                   llvm-addr2line            llvm-dwp                  llvm-ranlib               llvm-symbolizer           wasm-dis                  wasm-opt                  wasm2js                   wasm32-wasi-clang++
clang-14                  llvm-ar                   llvm-nm                   llvm-readobj              opt                       wasm-emscripten-finalize  wasm-reduce               wasm32-clang
llc                       llvm-cxxfilt              llvm-objcopy              llvm-size                 wasm-as                   wasm-ld                   wasm-shell                wasm32-clang++

and I tried to run ./clang-14, it shows errors, but files are there, and all files are 777 perms

-ash: ./clang-14: not found

OS INFO

Linux x 5.10.67-0-lts #1-Alpine SMP Mon, 20 Sep 2021 09:03:55 +0000 x86_64 Linux

alpine-standard-3.14.2-x86_64

How should I do to successfully build these .wasm files????????

[sbc100]

Normally those files are installed as O755, but O777 should be fine too.

Finally can run ldd /www/slm/emsdk/upstream/bin/clang-14 to see if you have the correct dynamic loader and shared libraries? I think alpine linux is missing the support for glibc-based executables by default so there are likely a missing dynamic loader. It looks like it might be possible to get this working: https://wiki.alpinelinux.org/wiki/Running_glibc_programs

[athxx]

I tried to install
apk add --no-cache libc6-compat gcompat linux-headers musl-dev musl libstdc++ curl ca-certificates
but it still did not work, but finally, I got this by install GNC glibc

https://github.com/sgerrand/alpine-pkg-glibc

cd /tmp/
wget -q -O /etc/apk/keys/sgerrand.rsa.pub https://alpine-pkgs.sgerrand.com/sgerrand.rsa.pub
wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.34-r0/glibc-2.34-r0.apk
apk add glibc-2.34-r0.apk

then build success