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chore: adjust mac building compilation #2439

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Apr 10, 2023
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chore: adjust mac building compilation #2439

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29 changes: 4 additions & 25 deletions doc/building.md
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Original file line number Diff line number Diff line change
Expand Up @@ -169,10 +169,10 @@ And optional:

### Install taraxa-node dependencies:

First you need to get (Brew)[https://brew.sh/] package manager. After that you need tot install dependencies with it. Currently there is no llvm-14 in brew, but it works well with llvm-13
First you need to get (Brew)[https://brew.sh/] package manager. After that you need tot install dependencies with it. Clang-14 is used for compilation.

brew update
brew install coreutils go autoconf automake gflags git libtool llvm@13 make pkg-config cmake conan snappy zstd rapidjson gmp mpfr
brew install coreutils go autoconf automake gflags git libtool llvm@14 make pkg-config cmake conan snappy zstd rapidjson gmp mpfr

### Clone the Repository

Expand All @@ -186,7 +186,8 @@ First you need to get (Brew)[https://brew.sh/] package manager. After that you n
# It is recommended to use clang because on other compilers you could face some errors
conan profile new clang --detect && \
conan profile update settings.compiler=clang clang && \
conan profile update settings.compiler.version=13 clang && \
conan profile update settings.compiler.version=14 clang && \
conan profile update settings.compiler.compiler.cppstd=14
conan profile update settings.compiler.libcxx=libc++ clang && \
conan profile update env.CC=clang clang && \
conan profile update env.CXX=clang++ clang
Expand Down Expand Up @@ -224,28 +225,6 @@ It could be cleaned up with:
rm -rf ~/.conan/data
```

#### Project building issue

If you are facing strange errors with project compilation it could be a problem that after install of llvm clang if pointing to a default apple clang. You could check that with `clang --version`. It should not point to `/Library/Developer/CommandLineTools/usr/bin`, but something like `/usr/local/opt/llvm/bin`. So you should specify full paths to a compiler:
1. Check full path with `brew info llvm`. Search for command that looks like
```
echo 'export PATH="/usr/local/opt/llvm/bin:$PATH"' >> ~/.zshrc
```
2. Take bin path from it. In our case this is `/usr/local/opt/llvm/bin` It shouldn't differ for most cases.
3. Append compiler to it and specify it in conan profile:
```
conan profile update env.CC=/usr/local/opt/llvm/bin/clang clang && \
conan profile update env.CXX=/usr/local/opt/llvm/bin/clang++ clang
```
4. Specify compiler with full path to cmake:
```
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=/usr/local/opt/llvm/bin/clang -DCMAKE_CXX_COMPILER=/usr/local/opt/llvm/bin/clang++ ../
```
5. After successfull finish of that command processing compile project with:
```
make -j$(nproc)
```

## Building on M1 Macs for x86_64 with Rosetta2

You should be able to build project following default MacOS building process. But here is a guide how to build project for x86_64 arch with Rosetta2.
Expand Down