Set `headerpad_max_install_names` on Darwin

This is useful for building binary distributions because it allows
references to library dependendencies on the build machine to be
rewritten appropriately upon installation on the user's machine.

Zig also does this in their `build.zig`:

    https://github.com/ziglang/zig/blob/b52be973dfb7d1408218b8e75800a2da3dc69108/build.zig#L551-L554

1 files changed, 5 insertions, 0 deletions

diff --git a/build.zig b/build.zig
index 45bd314..763e4fe 100644
--- a/build.zig
+++ b/build.zig
@@ -10,6 +10,11 @@ pub fn build(b: *std.build.Builder) void {
     const exe = b.addExecutable("ncdu", "src/main.zig");
     exe.setTarget(target);
     exe.setBuildMode(mode);
+    // https://github.com/ziglang/zig/blob/b52be973dfb7d1408218b8e75800a2da3dc69108/build.zig#L551-L554
+    if (exe.target.isDarwin()) {
+        // useful for package maintainers
+        exe.headerpad_max_install_names = true;
+    }
     exe.addCSourceFile("src/ncurses_refs.c", &[_][]const u8{});
     exe.linkLibC();
     exe.linkSystemLibrary("ncursesw");