AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO],
[dnl
+AC_REQUIRE([_XC_CFG_PRE_PREAMBLE])dnl
#
# Verify that 'echo' command is available, otherwise abort.
#
AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_CMD_TEST],
[dnl
+AC_REQUIRE([_XC_CFG_PRE_PREAMBLE])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl
#
# Verify that 'test' command is available, otherwise abort.
#
AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_VAR_PATH],
[dnl
+AC_REQUIRE([_XC_CFG_PRE_PREAMBLE])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_TEST])dnl
#
# Verify that 'PATH' variable is set, otherwise abort.
#
AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR],
[dnl
+AC_REQUIRE([_XC_CFG_PRE_PREAMBLE])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_TEST])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl
#
# Verify that 'expr' command is available, otherwise abort.
#
AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_UTIL_SED],
[dnl
+AC_REQUIRE([_XC_CFG_PRE_PREAMBLE])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_TEST])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR])dnl
#
# Verify that 'sed' utility is found within 'PATH', otherwise abort.
#
AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_UTIL_GREP],
[dnl
+AC_REQUIRE([_XC_CFG_PRE_PREAMBLE])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_TEST])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_SED])dnl
#
# Verify that 'grep' utility is found within 'PATH', otherwise abort.
#
AC_DEFUN([_XC_CFG_PRE_CHECK_PATH_SEPARATOR],
[dnl
+AC_REQUIRE([_XC_CFG_PRE_PREAMBLE])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_TEST])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_SED])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_GREP])dnl
#
# Auto-detect and set 'PATH_SEPARATOR', unless it is already non-empty set.
#
AC_DEFUN([_XC_CFG_PRE_POSTLUDE],
[dnl
+AC_REQUIRE([_XC_CFG_PRE_PREAMBLE])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_TEST])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_SED])dnl
+AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_GREP])dnl
+AC_REQUIRE([_XC_CFG_PRE_CHECK_PATH_SEPARATOR])dnl
echo "checking whether some basic commands and utilities are available... yes"
IFS=$xc_configure_preamble_prev_IFS