rustc: set MIPS cpu/features in the compiler

cf #31303

Author: Jorge Aparicio

mk/cfg/mips-unknown-linux-musl.mk

@@ -20,5 +20,5 @@ CFG_UNIXY_mips-unknown-linux-musl := 1
 CFG_LDPATH_mips-unknown-linux-musl :=
 CFG_RUN_mips-unknown-linux-musl=
 CFG_RUN_TARG_mips-unknown-linux-musl=
-RUSTC_FLAGS_mips-unknown-linux-musl := -C target-cpu=mips32r2 -C target-feature="+mips32r2" -C soft-float
+RUSTC_FLAGS_mips-unknown-linux-musl :=
 CFG_GNU_TRIPLE_mips-unknown-linux-musl := mips-unknown-linux-musl

mk/cfg/mipsel-unknown-linux-musl.mk

@@ -20,5 +20,5 @@ CFG_UNIXY_mipsel-unknown-linux-musl := 1
 CFG_LDPATH_mipsel-unknown-linux-musl :=
 CFG_RUN_mipsel-unknown-linux-musl=
 CFG_RUN_TARG_mipsel-unknown-linux-musl=
-RUSTC_FLAGS_mipsel-unknown-linux-musl := -C target-cpu=mips32 -C target-feature="+mips32"
+RUSTC_FLAGS_mipsel-unknown-linux-musl :=
 CFG_GNU_TRIPLE_mipsel-unknown-linux-musl := mipsel-unknown-linux-musl

src/librustc_back/target/mips_unknown_linux_musl.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use target::Target;
+use target::{Target, TargetOptions};
 
 pub fn target() -> Target {
     Target {
@@ -19,6 +19,10 @@ pub fn target() -> Target {
         target_os: "linux".to_string(),
         target_env: "musl".to_string(),
         target_vendor: "unknown".to_string(),
-        options: super::linux_base::opts()
+        options: TargetOptions {
+            cpu: "mips32r2".to_string(),
+            features: "+mips32r2,+soft-float".to_string(),
+            ..super::linux_base::opts()
+        }
     }
 }

src/librustc_back/target/mipsel_unknown_linux_musl.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use target::Target;
+use target::{Target, TargetOptions};
 
 pub fn target() -> Target {
     Target {
@@ -19,7 +19,10 @@ pub fn target() -> Target {
         target_os: "linux".to_string(),
         target_env: "musl".to_string(),
         target_vendor: "unknown".to_string(),
-
-        options: super::linux_base::opts()
+        options: TargetOptions {
+            cpu: "mips32".to_string(),
+            features: "+mips32".to_string(),
+            ..super::linux_base::opts()
+        }
     }
 }