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Annotation of embedaddon/rsync/aclocal.m4, revision 1.1.1.1

1.1       misho       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
                      4: dnl error message.
                      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"$target"; }; then
                     14:        AC_MSG_RESULT([different])
                     15:        ifelse($#, 1, [$1],
                     16:                [AC_MSG_ERROR(["you must remove config.cache and restart configure"])])
                     17:     else
                     18:        AC_MSG_RESULT([same])
                     19:     fi
                     20:     ac_cv_host_system_type="$host"
                     21:     ac_cv_build_system_type="$build"
                     22:     ac_cv_target_system_type="$target"
                     23: ])
                     24: 
                     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.
                     29: 
                     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
                     32: dnl the moment.
                     33: 
                     34: AC_DEFUN([TYPE_SOCKLEN_T],
                     35: [
                     36:    AC_CHECK_TYPE([socklen_t], ,[
                     37:       AC_MSG_CHECKING([for socklen_t equivalent])
                     38:       AC_CACHE_VAL([rsync_cv_socklen_t_equiv],
                     39:       [
                     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
                     45:                AC_TRY_COMPILE([
                     46: #include <sys/types.h>
                     47: #include <sys/socket.h>
                     48: 
                     49:                   int getpeername (int, $arg2 *, $t *);
                     50:                ],[
                     51:                   $t len;
                     52:                   getpeername(0,0,&len);
                     53:                ],[
                     54:                   rsync_cv_socklen_t_equiv="$t"
                     55:                   break
                     56:                ])
                     57:             done
                     58:          done
                     59: 
                     60:          if test "x$rsync_cv_socklen_t_equiv" = x; then
                     61:             AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])
                     62:          fi
                     63:       ])
                     64:       AC_MSG_RESULT($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>])
                     69: ])
                     70: 
                     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([[
                     78: AC_INCLUDES_DEFAULT
                     79: $2]],
                     80: [[$1 foo;]])],
                     81: [eval "ac_cv_type_$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____%'`
                     87: if false; then
                     88:        AC_CHECK_TYPES($1)
                     89: fi
                     90:   AC_DEFINE_UNQUOTED($ac_tr_hdr, 1, [Define if you have type `$1'])
                     91: fi
                     92: ])