1 dnl AC_VALIDATE_CACHE_SYSTEM_TYPE[(cmd)]
2 dnl if the cache file is inconsistent with the current host,
3 dnl target and build system types, execute CMD or print a default
5 AC_DEFUN(AC_VALIDATE_CACHE_SYSTEM_TYPE, [
6 AC_REQUIRE([AC_CANONICAL_SYSTEM])
7 AC_MSG_CHECKING([config.cache system type])
8 if { test x"${ac_cv_host_system_type+set}" = x"set" &&
9 test x"$ac_cv_host_system_type" != x"$host"; } ||
10 { test x"${ac_cv_build_system_type+set}" = x"set" &&
11 test x"$ac_cv_build_system_type" != x"$build"; } ||
12 { test x"${ac_cv_target_system_type+set}" = x"set" &&
13 test x"$ac_cv_target_system_type" != x"$target"; }; then
14 AC_MSG_RESULT([different])
16 [AC_MSG_ERROR(["you must remove config.cache and restart configure"])])
20 ac_cv_host_system_type="$host"
21 ac_cv_build_system_type="$build"
22 ac_cv_target_system_type="$target"
25 dnl Check for socklen_t: historically on BSD it is an int, and in
26 dnl POSIX 1g it is a type of its own, but some platforms use different
27 dnl types for the argument to getsockopt, getpeername, etc. So we
28 dnl have to test to find something that will work.
30 dnl This is no good, because passing the wrong pointer on C compilers is
31 dnl likely to only generate a warning, not an error. We don't call this at
34 AC_DEFUN([TYPE_SOCKLEN_T],
36 AC_CHECK_TYPE([socklen_t], ,[
37 AC_MSG_CHECKING([for socklen_t equivalent])
38 AC_CACHE_VAL([rsync_cv_socklen_t_equiv],
40 # Systems have either "struct sockaddr *" or
41 # "void *" as the second argument to getpeername
42 rsync_cv_socklen_t_equiv=
43 for arg2 in "struct sockaddr" void; do
44 for t in int size_t unsigned long "unsigned long"; do
46 #include <sys/types.h>
47 #include <sys/socket.h>
49 int getpeername (int, $arg2 *, $t *);
52 getpeername(0,0,&len);
54 rsync_cv_socklen_t_equiv="$t"
60 if test "x$rsync_cv_socklen_t_equiv" = x; then
61 AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])
64 AC_MSG_RESULT($rsync_cv_socklen_t_equiv)
65 AC_DEFINE_UNQUOTED(socklen_t, $rsync_cv_socklen_t_equiv,
66 [type to use in place of socklen_t if not defined])],
67 [#include <sys/types.h>
68 #include <sys/socket.h>])
71 dnl AC_HAVE_TYPE(TYPE,INCLUDES)
72 AC_DEFUN([AC_HAVE_TYPE], [
73 AC_REQUIRE([AC_HEADER_STDC])
74 cv=`echo "$1" | sed 'y%./+- %__p__%'`
75 AC_MSG_CHECKING(for $1)
76 AC_CACHE_VAL([ac_cv_type_$cv],
77 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
81 [eval "ac_cv_type_$cv=yes"],
82 [eval "ac_cv_type_$cv=no"]))dnl
83 ac_foo=`eval echo \\$ac_cv_type_$cv`
84 AC_MSG_RESULT($ac_foo)
85 if test "$ac_foo" = yes; then
86 ac_tr_hdr=HAVE_`echo $1 | sed 'y%abcdefghijklmnopqrstuvwxyz./- %ABCDEFGHIJKLMNOPQRSTUVWXYZ____%'`
90 AC_DEFINE_UNQUOTED($ac_tr_hdr, 1, [Define if you have type `$1'])