Use C add impl for arm-gnueabi

Author: mattico

build.rs

@@ -360,6 +360,10 @@ fn main() {
 
         }
 
+        if llvm_target.last().unwrap().ends_with("gnueabi") {
+            sources.extend(&["addsf3.c", "adddf3.c"]);
+        }
+
         if target_arch == "aarch64" {
             sources.extend(&["comparetf2.c",
                              "extenddftf2.c",

src/arm.rs

@@ -58,11 +58,13 @@ pub unsafe fn __aeabi_ldivmod() {
 }
 
 // TODO: These aeabi_* functions should be defined as aliases
+#[cfg(not(gnueabi))]
 #[cfg_attr(not(test), no_mangle)]
 pub extern "C" fn __aeabi_dadd(a: f64, b: f64) -> f64 {
     ::float::add::__adddf3(a, b)
 }
 
+#[cfg(not(gnueabi))]
 #[cfg_attr(not(test), no_mangle)]
 pub extern "C" fn __aeabi_fadd(a: f32, b: f32) -> f32 {
     ::float::add::__addsf3(a, b)

src/float/add.rs

@@ -181,14 +181,10 @@ macro_rules! add {
     }
 }
 
-// NOTE(cfg) These are disabled for gnueabihf due to 
-// https://github.com/rust-lang-nursery/compiler-builtins/issues/90
-#[cfg(not(gnueabi))]
 add!(__addsf3: f32);
-#[cfg(not(gnueabi))]
 add!(__adddf3: f64);
 
-#[cfg(all(test, not(gnueabi)))]
+#[cfg(test)]
 mod tests {
     use core::{f32, f64};
     use qc::{F32, F64};

src/float/mod.rs

@@ -1,7 +1,9 @@
 use core::mem;
-#[cfg(test)]
-use core::fmt;
 
+// NOTE(cfg) add is disabled for gnueabi due to 
+// https://github.com/rust-lang-nursery/compiler-builtins/issues/90
+
+#[cfg(not(gnueabi))]
 pub mod add;
 pub mod pow;
 

src/float/pow.rs

@@ -31,7 +31,6 @@ pow!(__powidf2: f64, i32);
 
 #[cfg(test)]
 mod tests {
-    use float::{Float};
     use qc::{I32, F32, F64};
 
     check! {