diff --git a/build.rs b/build.rs
index ac75e6e..5d48ec6 100644
--- a/build.rs
+++ b/build.rs
@@ -189,6 +189,7 @@ use core::mem;
               target_os = "linux",
               test)))]
 use std::mem;
+
 use compiler_builtins::float::add::__adddf3;
 
 fn mk_f64(x: u64) -> f64 {
@@ -828,11 +829,22 @@ fn divsi3() {
         }
 
         fn prologue() -> &'static str {
-            "
+            r#"
+#[cfg(all(target_arch = "arm",
+          not(any(target_env = "gnu", target_env = "musl")),
+          target_os = "linux",
+          test))]
+use core::mem;
+#[cfg(not(all(target_arch = "arm",
+              not(any(target_env = "gnu", target_env = "musl")),
+              target_os = "linux",
+              test)))]
+use std::mem;
+
 use compiler_builtins::int::sdiv::__divti3;
 
 static TEST_CASES: &[((i128, i128), i128)] = &[
-"
+"#
         }
 
         fn epilogue() -> &'static str {
@@ -842,7 +854,7 @@ static TEST_CASES: &[((i128, i128), i128)] = &[
 #[test]
 fn divti3() {
     for &((a, b), c) in TEST_CASES {
-        let c_ = __divti3(a, b);
+        let c_: i128 = unsafe { mem::transmute(__divti3(a, b)) };
         assert_eq!(((a, b), c), ((a, b), c_));
     }
 }
@@ -1895,11 +1907,22 @@ fn modsi3() {
         }
 
         fn prologue() -> &'static str {
-            "
+            r#"
+#[cfg(all(target_arch = "arm",
+          not(any(target_env = "gnu", target_env = "musl")),
+          target_os = "linux",
+          test))]
+use core::mem;
+#[cfg(not(all(target_arch = "arm",
+              not(any(target_env = "gnu", target_env = "musl")),
+              target_os = "linux",
+              test)))]
+use std::mem;
+
 use compiler_builtins::int::sdiv::__modti3;
 
 static TEST_CASES: &[((i128, i128), i128)] = &[
-"
+"#
         }
 
         fn epilogue() -> &'static str {
@@ -1909,7 +1932,7 @@ static TEST_CASES: &[((i128, i128), i128)] = &[
 #[test]
 fn modti3() {
     for &((a, b), c) in TEST_CASES {
-        let c_ = __modti3(a, b);
+        let c_: i128  = unsafe { mem::transmute(__modti3(a, b)) };
         assert_eq!(((a, b), c), ((a, b), c_));
     }
 }
@@ -2913,11 +2936,22 @@ fn udivmodsi4() {
         }
 
         fn prologue() -> &'static str {
-            "
+            r#"
+#[cfg(all(target_arch = "arm",
+          not(any(target_env = "gnu", target_env = "musl")),
+          target_os = "linux",
+          test))]
+use core::mem;
+#[cfg(not(all(target_arch = "arm",
+              not(any(target_env = "gnu", target_env = "musl")),
+              target_os = "linux",
+              test)))]
+use std::mem;
+
 use compiler_builtins::int::udiv::__udivmodti4;
 
 static TEST_CASES: &[((u128, u128), (u128, u128))] = &[
-"
+"#
         }
 
         fn epilogue() -> &'static str {
@@ -2928,7 +2962,7 @@ static TEST_CASES: &[((u128, u128), (u128, u128))] = &[
 fn udivmodti4() {
     for &((a, b), (c, rem)) in TEST_CASES {
         let mut rem_ = 0;
-        let c_ = __udivmodti4(a, b, Some(&mut rem_));
+        let c_: u128  = unsafe { mem::transmute(__udivmodti4(a, b, Some(&mut rem_))) };
         assert_eq!(((a, b), (c, rem)), ((a, b), (c_, rem_)));
     }
 }
@@ -3036,11 +3070,22 @@ fn udivsi3() {
         }
 
         fn prologue() -> &'static str {
-            "
+            r#"
+#[cfg(all(target_arch = "arm",
+          not(any(target_env = "gnu", target_env = "musl")),
+          target_os = "linux",
+          test))]
+use core::mem;
+#[cfg(not(all(target_arch = "arm",
+              not(any(target_env = "gnu", target_env = "musl")),
+              target_os = "linux",
+              test)))]
+use std::mem;
+
 use compiler_builtins::int::udiv::__udivti3;
 
 static TEST_CASES: &[((u128, u128), u128)] = &[
-"
+"#
         }
 
         fn epilogue() -> &'static str {
@@ -3050,7 +3095,7 @@ static TEST_CASES: &[((u128, u128), u128)] = &[
 #[test]
 fn udivti3() {
     for &((a, b), c) in TEST_CASES {
-        let c_ = __udivti3(a, b);
+        let c_: u128 = unsafe { mem::transmute(__udivti3(a, b)) };
         assert_eq!(((a, b), c), ((a, b), c_));
     }
 }
@@ -3219,11 +3264,22 @@ fn umodsi3() {
         }
 
         fn prologue() -> &'static str {
-            "
+            r#"
+#[cfg(all(target_arch = "arm",
+          not(any(target_env = "gnu", target_env = "musl")),
+          target_os = "linux",
+          test))]
+use core::mem;
+#[cfg(not(all(target_arch = "arm",
+              not(any(target_env = "gnu", target_env = "musl")),
+              target_os = "linux",
+              test)))]
+use std::mem;
+
 use compiler_builtins::int::udiv::__umodti3;
 
 static TEST_CASES: &[((u128, u128), u128)] = &[
-"
+"#
         }
 
         fn epilogue() -> &'static str {
@@ -3233,7 +3289,7 @@ static TEST_CASES: &[((u128, u128), u128)] = &[
 #[test]
 fn umodti3() {
     for &((a, b), c) in TEST_CASES {
-        let c_ = __umodti3(a, b);
+        let c_: u128 = unsafe { mem::transmute(__umodti3(a, b)) };
         assert_eq!(((a, b), c), ((a, b), c_));
     }
 }