Fix build on riscv64gc-unknown-linux-gnu (gnzlbg#40)

This works around the mismatch between the GNU target and rustc target.

Fixes gnzlbg#36

Signed-off-by: Amanieu d'Antras <amanieu@gmail.com>

Author: Amanieu

jemalloc-ctl/src/keys.rs

@@ -31,7 +31,7 @@ use crate::{fmt, ops, raw};
 
 /// A `Name` in the _MALLCTL NAMESPACE_.
 #[repr(transparent)]
-#[derive(PartialEq)]
+#[derive(PartialEq, Eq)]
 pub struct Name([u8]);
 
 /// Converts a null-terminated byte-string into a [`Name`].
@@ -132,12 +132,12 @@ impl fmt::Display for Name {
 
 /// Management Information Base of a non-string value.
 #[repr(transparent)]
-#[derive(Copy, Clone, PartialEq, Debug, Default)]
+#[derive(Copy, Clone, PartialEq, Eq, Debug, Default)]
 pub struct Mib<T: MibArg>(T);
 
 /// Management Information Base of a string value.
 #[repr(transparent)]
-#[derive(Copy, Clone, PartialEq, Debug, Default)]
+#[derive(Copy, Clone, PartialEq, Eq, Debug, Default)]
 pub struct MibStr<T: MibArg>(T);
 
 impl<T: MibArg> AsRef<[usize]> for Mib<T> {

jemalloc-sys/build.rs

@@ -188,11 +188,10 @@ fn main() {
     }
 
     if let Ok(malloc_conf_opts) = read_and_watch_env("JEMALLOC_SYS_WITH_MALLOC_CONF") {
-        malloc_conf += &format!(
-            "{}{}",
-            if malloc_conf.is_empty() { "" } else { "," },
-            malloc_conf_opts
-        );
+        if !malloc_conf.is_empty() {
+            malloc_conf.push(',');
+        }
+        malloc_conf.push_str(&malloc_conf_opts);
     }
 
     if !malloc_conf.is_empty() {
@@ -343,6 +342,7 @@ fn gnu_target(target: &str) -> String {
         "i686-pc-windows-gnu" => "i686-w64-mingw32".to_string(),
         "x86_64-pc-windows-gnu" => "x86_64-w64-mingw32".to_string(),
         "armv7-linux-androideabi" => "arm-linux-androideabi".to_string(),
+        "riscv64gc-unknown-linux-gnu" => "riscv64-linux-gnu".to_string(),
         s => s.to_string(),
     }
 }