(info, "src/llvm-project/llvm", builder.llvm_out(target), dir.join("bin"))
};
- if !llvm_info.is_git() {
- println!(
- "git could not determine the LLVM submodule commit hash. \
- Assuming that an LLVM build is necessary.",
- );
- }
-
let build_llvm_config = llvm_config_ret_dir
.join(exe("llvm-config", &*builder.config.build));
let done_stamp = out_dir.join("llvm-finished-building");
- if let Some(llvm_commit) = llvm_info.sha() {
- if done_stamp.exists() {
+ if done_stamp.exists() {
+ if let Some(llvm_commit) = llvm_info.sha() {
let done_contents = t!(fs::read(&done_stamp));
// If LLVM was already built previously and the submodule's commit didn't change
// from the previous build, then no action is required.
if done_contents == llvm_commit.as_bytes() {
- return build_llvm_config
+ return build_llvm_config;
}
+ } else {
+ builder.info(
+ "Could not determine the LLVM submodule commit hash. \
+ Assuming that an LLVM rebuild is not necessary.",
+ );
+ builder.info(&format!(
+ "To force LLVM to rebuild, remove the file `{}`",
+ done_stamp.display()
+ ));
+ return build_llvm_config;
}
}
cfg.build();
- if let Some(llvm_commit) = llvm_info.sha() {
- t!(fs::write(&done_stamp, llvm_commit));
- }
+ t!(fs::write(&done_stamp, llvm_info.sha().unwrap_or("")));
build_llvm_config
}