Fix detection of fdatasync on OSX

ghazel · Oct 11, 2009 · 68038c5 · 68038c5
1 parent 12f05f6
commit 68038c5
Showing 1 changed file with 13 additions and 1 deletion.
diff --git a/configure.in b/configure.in
@@ -105,7 +105,19 @@ else
   LIBS="$LIBS -levent"
 
   AC_CHECK_FUNCS([posix_fallocate])
-  AC_CHECK_FUNCS([fdatasync])
+  dnl {{{ make sure that fdatasync exits
+  AC_CACHE_CHECK([for fdatasync],[ac_cv_func_fdatasync],[
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+  #include <unistd.h>
+  ]],[[
+  fdatasync(4);
+  ]])],
+  [ac_cv_func_fdatasync=yes],
+  [ac_cv_func_fdatasync=no])
+  ])
+  AS_IF([test "x${ac_cv_func_fdatasync}" = "xyes"],
+   [AC_DEFINE([HAVE_FDATASYNC],[1],[If the system defines fdatasync])])
+  dnl }}}
 
   AC_CHECK_LIB([socket], [bind], [
     LIBS="$LIBS -lsocket"