AX_C___ATTRIBUTE__
AC_FUNC_FORK
-AC_CHECK_FUNCS([dup2 memmove setenv strdup])
+AC_CHECK_FUNCS([memmove setenv],
+ [],[AC_MSG_ERROR([function is required])])
+AC_CHECK_FUNCS([execvpe])
dnl Thanks to gperftools' configure.ac (https://code.google.com/p/gperftools).
AC_MSG_CHECKING([for __builtin_expect])
AC_ARG_ENABLE([warnings],
[AS_HELP_STRING([--enable-warnings],[enable warning output])],
[if test "x$enableval" = xyes; then
- AC_DEFINE([WARNING], 1, [Define to enable warning output.])
+ AC_DEFINE([WARNING], 1, [Define to 1 enable warning output.])
fi])
AC_ARG_ENABLE([debug],
[AS_HELP_STRING([--enable-debug],[enable debug output])],
[if test "x$enableval" = xyes; then
- AC_DEFINE([DEBUG], 1, [Define to enable debug output.])
+ AC_DEFINE([DEBUG], 1, [Define to 1 enable debug output.])
dnl DEBUG implies WARNING
AC_DEFINE([WARNING], 1)
fi])