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dnl AC_VALIDATE_CACHE_SYSTEM_TYPE[(cmd)]
dnl if the cache file is inconsistent with the current host,
dnl target and build system types, execute CMD or print a default
dnl error message.
AC_DEFUN(AC_VALIDATE_CACHE_SYSTEM_TYPE, [
AC_REQUIRE([AC_CANONICAL_SYSTEM])
AC_MSG_CHECKING([config.cache system type])
if { test x"${ac_cv_host_system_type+set}" = x"set" &&
test x"$ac_cv_host_system_type" != x"$host"; } ||
{ test x"${ac_cv_build_system_type+set}" = x"set" &&
test x"$ac_cv_build_system_type" != x"$build"; } ||
{ test x"${ac_cv_target_system_type+set}" = x"set" &&
test x"$ac_cv_target_system_type" != x"$target"; }; then
AC_MSG_RESULT([different])
ifelse($#, 1, [$1],
[AC_MSG_ERROR(["you must remove config.cache and restart configure"])])
else
AC_MSG_RESULT([same])
fi
ac_cv_host_system_type="$host"
ac_cv_build_system_type="$build"
ac_cv_target_system_type="$target"
])
dnl based on Automake's maintainer mode
AC_DEFUN(SAMBA_MAINTAINER_MODE,[
AC_ARG_ENABLE(maintainer-mode,
[ --enable-maintainer-mode enable some make rules for maintainers],
maint_mode=$enableval, maint_mode=no)
if test x"$maint_mode" = x"yes"; then MAINT=; else MAINT='#'; fi
AC_SUBST(MAINT)
AC_PATH_PROG(AUTOCONF, autoconf, autoconf)
AC_SUBST(AUTOCONF)
AC_PATH_PROG(AUTOHEADER, autoheader, autoheader)
AC_SUBST(AUTOHEADER)
])
dnl test whether dirent has a d_off member
AC_DEFUN(AC_DIRENT_D_OFF,
[AC_CACHE_CHECK([for d_off in dirent], ac_cv_dirent_d_off,
[AC_TRY_COMPILE([
#include <unistd.h>
#include <sys/types.h>
#include <dirent.h>], [struct dirent d; d.d_off;],
ac_cv_dirent_d_off=yes, ac_cv_dirent_d_off=no)])
if test $ac_cv_dirent_d_off = yes; then
AC_DEFINE(HAVE_DIRENT_D_OFF)
fi
])
dnl AC_PROG_CC_FLAG(flag)
AC_DEFUN(AC_PROG_CC_FLAG,
[AC_CACHE_CHECK(whether ${CC-cc} accepts -$1, ac_cv_prog_cc_$1,
[echo 'void f(){}' > conftest.c
if test -z "`${CC-cc} -$1 -c conftest.c 2>&1`"; then
ac_cv_prog_cc_$1=yes
else
ac_cv_prog_cc_$1=no
fi
rm -f conftest*
])])
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