Merge pull request #46 from makotokato/android-clang

Fix build failure when using clang for Android

diff --combined src/closures.c
index 6eac601,557c736..98f00f9
--- 1/src/closures.c
--- 2/src/closures.c
+++ b/src/closures.c
@@@ -34,7 -34,7 +34,7 @@@
  #include <ffi_common.h>
  
  #if !FFI_MMAP_EXEC_WRIT && !FFI_EXEC_TRAMPOLINE_TABLE
- # if __gnu_linux__
+ # if __gnu_linux__ && !defined(__ANDROID__)
  /* This macro indicates it may be forbidden to map anonymous memory
     with both write and execute permission.  Code compiled when this
     option is defined will attempt to map such pages once, but if it
@@@ -264,7 -264,7 +264,7 @@@ static in
  open_temp_exec_file_dir (const char *dir)
  {
    static const char suffix[] = "/ffiXXXXXX";
 -  int lendir = strlen (dir);
 +  size_t lendir = strlen (dir);
    char *tempname = __builtin_alloca (lendir + sizeof (suffix));
  
    if (!tempname)
@@@ -382,7 -382,7 +382,7 @@@ open_temp_exec_file_opts_next (void
  }
  
  /* Return a file descriptor of a temporary zero-sized file in a
 -   writable and exexutable filesystem.  */
 +   writable and executable filesystem.  */
  static int
  open_temp_exec_file (void)
  {