diff -up gnome-vfs-2.20.1/configure.in.mime-cache gnome-vfs-2.20.1/configure.in
--- gnome-vfs-2.20.1/configure.in.mime-cache	2007-12-03 00:45:24.000000000 -0500
+++ gnome-vfs-2.20.1/configure.in	2007-12-03 00:41:43.000000000 -0500
@@ -158,7 +158,7 @@ AC_SEARCH_LIBS(setsockopt, socket)
 AC_SEARCH_LIBS(login_tty, util, [AC_DEFINE([HAVE_LOGIN_TTY],[],[Whether login_tty is available])])
 
 AC_FUNC_ALLOCA
-AC_CHECK_FUNCS(getdtablesize open64 lseek64 statfs statvfs seteuid setegid setresuid setresgid readdir_r mbrtowc inet_pton getdelim sysctlbyname poll posix_fadvise fchmod atoll)
+AC_CHECK_FUNCS(getdtablesize open64 lseek64 statfs statvfs seteuid setegid setresuid setresgid readdir_r mbrtowc inet_pton getdelim sysctlbyname poll posix_fadvise fchmod atoll mmap)
 AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_rdev])
 AC_STRUCT_ST_BLOCKS