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After some tweaks to our dep builds, we can now build a universal binary for macOS by using `CMAKE_OSX_ARCHITECTURES`. So, let's do that. This requires a number of additional changes: 1. We need to build on macOS 11, since earlier versions do not support building universal (M1 + Intel) binaries. 2. We need to provision a universal `libintl`. The linker will look for an ARM64 version of this library when linking the `nvim` binary. While we're here: 1. Link statically to `libintl`. This allows to to avoid having to do any install name rewriting or codesigning to package Neovim. 2. Bump the `MACOSX_DEPLOYMENT_TARGET` to `11`. We're already using a `libintl` built by Homebrew (through the pre-installed version of `gettext`), and that is built for macOS 11. In order to ensure we link to `libintl.a` instead of `libintl.dylib`, we have to make sure that CMake can't find the latter. This ideally should be a matter of doing `brew unlink gettext`. However, CMake is too adept at finding things that Homebrew has installed (even when not linked), so we have to do a bit more than that. This appears in the additional step ensuring static linkage to `libintl`. We end up breaking some Homebrew-installed software in the process, and some of these software is called during our build (e.g. curl, git, wget). To avoid any adverse effects, let's just uninstall them. |
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