Setting MACOSX_DEPLOYMENT_TARGET

[mudge]

In the most recent of re2, I need to target macOS 10.14 due to compilation errors from Abseil such as the following:

error: 'visit<BufferSizeVisitor, std::__1::variant<std::__1::variant<unsigned long long, long long, unsigned int, int, bool>, std::__1::variant<unsigned long long, long long, double>, absl::lts_20250814::Span<const char>, std::__1::variant<unsigned int, int, float> > &>' is unavailable: introduced in macOS 10.14

MACOSX_DEPLOYMENT_TARGET is currently hardcoded to 10.13 in

rake-compiler-dock/build/mk_osxcross.sh

Line 28 in cc84689

echo "export MACOSX_DEPLOYMENT_TARGET=10.13" >> /etc/rubybashrc

I’m overriding it by explicitly setting it to 10.14 in my extconf.rb but is there a more “blessed” way to achieve this?

[flavorjones]

@mudge sorry for not seeing this before now, it's been a busy few months for me.

If this is working for you at gem build time, that's great! Maybe we can "bless" it by adding it to the README documentation. Would you be up for creating a PR for that?

[mudge]

I would but where would it fit best? https://github.com/rake-compiler/rake-compiler-dock?tab=readme-ov-file#environment-variables perhaps? Alternatively, would it be enough to add to the FAQ?