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93 lines
3.1 KiB
93 lines
3.1 KiB
dnl AC_VALIDATE_CACHE_SYSTEM_TYPE[(cmd)]
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dnl if the cache file is inconsistent with the current host,
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dnl target and build system types, execute CMD or print a default
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dnl error message.
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AC_DEFUN(AC_VALIDATE_CACHE_SYSTEM_TYPE, [
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AC_REQUIRE([AC_CANONICAL_SYSTEM])
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AC_MSG_CHECKING([config.cache system type])
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if { test x"${ac_cv_host_system_type+set}" = x"set" &&
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test x"$ac_cv_host_system_type" != x"$host"; } ||
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{ test x"${ac_cv_build_system_type+set}" = x"set" &&
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test x"$ac_cv_build_system_type" != x"$build"; } ||
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{ test x"${ac_cv_target_system_type+set}" = x"set" &&
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test x"$ac_cv_target_system_type" != x"$target"; }; then
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AC_MSG_RESULT([different])
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ifelse($#, 1, [$1],
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[AC_MSG_ERROR(["you must remove config.cache and restart configure"])])
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else
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AC_MSG_RESULT([same])
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fi
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ac_cv_host_system_type="$host"
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ac_cv_build_system_type="$build"
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ac_cv_target_system_type="$target"
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])
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dnl Check for socklen_t: historically on BSD it is an int, and in
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dnl POSIX 1g it is a type of its own, but some platforms use different
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dnl types for the argument to getsockopt, getpeername, etc. So we
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dnl have to test to find something that will work.
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dnl This is no good, because passing the wrong pointer on C compilers is
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dnl likely to only generate a warning, not an error. We don't call this at
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dnl the moment.
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AC_DEFUN([TYPE_SOCKLEN_T],
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[
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AC_CHECK_TYPE([socklen_t], ,[
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AC_MSG_CHECKING([for socklen_t equivalent])
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AC_CACHE_VAL([rsync_cv_socklen_t_equiv],
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[
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# Systems have either "struct sockaddr *" or
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# "void *" as the second argument to getpeername
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rsync_cv_socklen_t_equiv=
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for arg2 in "struct sockaddr" void; do
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for t in int size_t unsigned long "unsigned long"; do
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AC_TRY_COMPILE([
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#include <sys/types.h>
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#include <sys/socket.h>
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int getpeername (int, $arg2 *, $t *);
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],[
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$t len;
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getpeername(0,0,&len);
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],[
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rsync_cv_socklen_t_equiv="$t"
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break
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])
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done
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done
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if test "x$rsync_cv_socklen_t_equiv" = x; then
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AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])
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fi
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])
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AC_MSG_RESULT($rsync_cv_socklen_t_equiv)
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AC_DEFINE_UNQUOTED(socklen_t, $rsync_cv_socklen_t_equiv,
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[type to use in place of socklen_t if not defined])],
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[#include <sys/types.h>
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#include <sys/socket.h>])
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])
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dnl AC_HAVE_TYPE(TYPE,INCLUDES)
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AC_DEFUN([AC_HAVE_TYPE], [
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AC_REQUIRE([AC_HEADER_STDC])
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cv=`echo "$1" | sed 'y%./+- %__p__%'`
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AC_MSG_CHECKING(for $1)
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AC_CACHE_VAL([ac_cv_type_$cv],
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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AC_INCLUDES_DEFAULT
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$2]],
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[[$1 foo;]])],
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[eval "ac_cv_type_$cv=yes"],
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[eval "ac_cv_type_$cv=no"]))dnl
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ac_foo=`eval echo \\$ac_cv_type_$cv`
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AC_MSG_RESULT($ac_foo)
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if test "$ac_foo" = yes; then
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ac_tr_hdr=HAVE_`echo $1 | sed 'y%abcdefghijklmnopqrstuvwxyz./- %ABCDEFGHIJKLMNOPQRSTUVWXYZ____%'`
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if false; then
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AC_CHECK_TYPES($1)
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fi
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AC_DEFINE_UNQUOTED($ac_tr_hdr, 1, [Define if you have type `$1'])
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fi
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])
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