rust: Use 'pie' relocation mode under UML

UML expects a position independent executable for some reason, so tell rustc to generate pie objects. Otherwise we get a bunch of relocations we can't deal with in libcore. Signed-off-by: David Gow <[email protected]>
Rust-for-Linux · Sep 12, 2022 · 3aa68a3 · 3aa68a3
1 parent 2108da2
commit 3aa68a3
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/Makefile b/Makefile
@@ -567,7 +567,6 @@ KBUILD_RUSTFLAGS := $(rust_common_flags) \
 		    -Cpanic=abort -Cembed-bitcode=n -Clto=n \
 		    -Cforce-unwind-tables=n -Ccodegen-units=1 \
 		    -Csymbol-mangling-version=v0 \
-		    -Crelocation-model=static \
 		    -Zfunction-sections=n \
 		    -Dclippy::float_arithmetic
 

diff --git a/scripts/generate_rust_target.rs b/scripts/generate_rust_target.rs
@@ -228,5 +228,11 @@ fn main() {
         ts.push("target-endian", "big");
     }
 
+    if cfg.has("UML") {
+        ts.push("relocation-model", "pie");
+    } else {
+        ts.push("relocation-model", "static");
+    }
+
     println!("{}", ts);
 }