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Fix the library install name and path #352

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Merged
merged 2 commits into from
Jun 20, 2025
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afbjorklund
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The install_name is supposed to be an absolute path, and use the soname rather than the developer symlink.

Avoids using DYLD_FALLBACK_LIBRARY_PATH=/usr/local/lib. Homebrew changes the install_name downstream, in /opt.

The default is the absolute path of the build directory (not wanted)

Typical error: dyld[36629]: Library not loaded: libkrun-efi.dylib

The install_name is supposed to be an absolute path,
and use the soname rather than the developer symlink.

Avoids using DYLD_FALLBACK_LIBRARY_PATH=/usr/local/lib
Homebrew changes the install_name downstream, in /opt.

Signed-off-by: Anders F Björklund <[email protected]>
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@slp slp left a comment

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Thanks for the PR! I think that we should fix this the same way we did in Linux, by using rustc-cdylib-link-arg to pass -install_name, -current_version, and -compatibility_version.

@afbjorklund
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Added the linker flags. We still need to rename and relocate the library, though.

@@ -5,5 +5,10 @@ fn main() {
std::env::var("CARGO_PKG_VERSION_MAJOR").unwrap()
);
#[cfg(target_os = "macos")]
println!(
"cargo:rustc-cdylib-link-arg=-Wl,-install_name,libkrun.{}.dylib,-compatibility_version,1.0.0,-current_version,{}.0.0",
std::env::var("CARGO_PKG_VERSION_MAJOR").unwrap(), std::env::var("CARGO_PKG_VERSION_MINOR").unwrap()
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Reading ld's manual, I'd say compatibility_version should be MAJOR.0.0, and current_version MAJOR.MINOR.RELEASE.

Signed-off-by: Anders F Björklund <[email protected]>
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LGTM, thanks!

@slp slp merged commit e1bb605 into containers:main Jun 20, 2025
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3 participants