Auto merge of #3952 - jessicah:haiku-support, r=alexcrichton

Haiku support

Author: bors

configure

@@ -310,6 +310,7 @@ valopt local-rust-root "" "set prefix for local rust binary"
 if [ ! -z "${CFG_LOCAL_RUST_ROOT}" ]; then
     export LD_LIBRARY_PATH="${CFG_LOCAL_RUST_ROOT}/lib:$LD_LIBRARY_PATH"
     export DYLD_LIBRARY_PATH="${CFG_LOCAL_RUST_ROOT}/lib:$DYLD_LIBRARY_PATH"
+    export LIBRARY_PATH="${CFG_LOCAL_RUST_ROOT}/lib:$LIBRARY_PATH"
     export PATH="${CFG_LOCAL_RUST_ROOT}/bin:$PATH"
 fi
 

src/cargo/util/errors.rs

@@ -459,6 +459,7 @@ pub fn process_error(msg: &str,
                 libc::SIGSEGV => ", SIGSEGV: invalid memory reference",
                 libc::SIGTERM => ", SIGTERM: termination signal",
                 libc::SIGBUS => ", SIGBUS: access to undefined memory",
+                #[cfg(not(target_os = "haiku"))]
                 libc::SIGSYS => ", SIGSYS: bad system call",
                 libc::SIGTRAP => ", SIGTRAP: trace/breakpoint trap",
                 _ => "",