Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Changes required for rustc/cargo to build for iOS targets #73903

Closed
wants to merge 6 commits into from
Closed
Changes from 5 commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
19 changes: 19 additions & 0 deletions src/bootstrap/native.rs
Original file line number Diff line number Diff line change
Expand Up @@ -175,6 +175,17 @@ impl Step for Llvm {
cfg.define("LLVM_ENABLE_ZLIB", "OFF");
}

// Are we compiling for iOS/tvOS?
if target.contains("apple") && !target.contains("darwin") {
Absolucy marked this conversation as resolved.
Show resolved Hide resolved
// These two defines prevent CMake from automatically trying to add a MacOSX sysroot, which leads to a compiler error.
cfg.define("CMAKE_OSX_SYSROOT", "/");
cfg.define("CMAKE_OSX_DEPLOYMENT_TARGET", "");
Absolucy marked this conversation as resolved.
Show resolved Hide resolved
// Prevent cmake from adding -bundle to CFLAGS automatically, which leads to a compiler error because "-bitcode_bundle" also gets added.
cfg.define("LLVM_ENABLE_PLUGINS", "OFF");
// Zlib fails to link properly, leading to a compiler error.
cfg.define("LLVM_ENABLE_ZLIB", "OFF");
}

if builder.config.llvm_thin_lto {
cfg.define("LLVM_ENABLE_LTO", "Thin");
if !target.contains("apple") {
Expand Down Expand Up @@ -412,6 +423,14 @@ fn configure_cmake(
if let Some(ref s) = builder.config.llvm_cflags {
cflags.push_str(&format!(" {}", s));
}
// Some compiler features used by LLVM (such as thread locals) will not work on a min version below iOS 10.
if target.contains("apple-ios") {
if target.contains("86-") {
cflags.push_str(" -miphonesimulator-version-min=10.0");
} else {
cflags.push_str(" -miphoneos-version-min=10.0");
}
}
cfg.define("CMAKE_C_FLAGS", cflags);
let mut cxxflags = builder.cflags(target, GitRepo::Llvm).join(" ");
if builder.config.llvm_static_stdcpp && !target.contains("msvc") && !target.contains("netbsd") {
Expand Down