Auto merge of #2751 - guyru:master, r=Amanieu

Add unix adjtime support.

Author: bors

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -4204,7 +4204,6 @@ extern "C" {
     pub fn getpagesize() -> ::c_int;
     pub fn getpagesizes(pagesize: *mut ::size_t, nelem: ::c_int) -> ::c_int;
 
-    pub fn adjtime(arg1: *const ::timeval, arg2: *mut ::timeval) -> ::c_int;
     pub fn clock_getcpuclockid2(arg1: ::id_t, arg2: ::c_int, arg3: *mut clockid_t) -> ::c_int;
 
     pub fn shm_create_largepage(

src/unix/mod.rs

@@ -1389,6 +1389,15 @@ extern "C" {
     pub fn getline(lineptr: *mut *mut c_char, n: *mut size_t, stream: *mut FILE) -> ssize_t;
 
     pub fn lockf(fd: ::c_int, cmd: ::c_int, len: ::off_t) -> ::c_int;
+
+}
+cfg_if! {
+    if #[cfg(not(any(target_os = "emscripten",
+                     target_os = "android")))] {
+        extern "C" {
+            pub fn adjtime(delta: *const timeval, olddelta: *mut timeval) -> ::c_int;
+        }
+    }
 }
 
 cfg_if! {