Issues with icu4c on Mac about peaclock

[poetaman]

This worked for me on M1 Mac (without having to edit CMakeLists.txt)

./RUNME.sh build -- -DCMAKE_CXX_COMPILER='/opt/homebrew/bin/g++-11' -DCMAKE_CXX_FLAGS='-I/opt/homebrew/opt/icu4c/include'

As @rumbletumjum mentioned, you need to run LC_ALL=C before running the binary or else you will get following error:
locale::facet::_S_create_c_locale name not valid.

[rumbletumjum]

Try adding:

link_directories("/usr/local/opt/icu4c/lib")
include_directories("/usr/local/opt/icu4c/include")

to CMakeLists.txt after the cmake_minimum_required line. Make sure the paths match the values specified in the caveats of brew info icu4c and execute the build script as specified in the readme for macOS. The path might be different for an M1 Mac, so watch out for that.

Also, to dodge another Mac-specific problem, set the locale by exporting LC_ALL=C (or an appropriate value) before running.

[ChristophePRAT]

Are there any updates concerning this issue?

[limingjie]

Thank you @rumbletumjum and @poetaman! Here is what I did to make it work on Mac M1

1. Install gcc and icu4c.

brew install gcc
brew install icu4c

2. Add the following lines in CMakeLists.txt after the cmake_minimum_required line.

link_directories("/usr/local/opt/icu4c/lib")
include_directories("/usr/local/opt/icu4c/include")

3. Build

./RUNME.sh build -- -DCMAKE_CXX_COMPILER='/opt/homebrew/Cellar/gcc/13.1.0/bin/g++-13'

4. Install

./RUNME.sh install

5. Run peaclock

LC_ALL=C peaclock