AX_C___ATTRIBUTE__
AC_FUNC_FORK
-AC_CHECK_FUNCS([dup2 memmove setenv strdup])
+AC_CHECK_FUNCS([memmove setenv],
+ [],[AC_MSG_ERROR([function is required])])
dnl Thanks to gperftools' configure.ac (https://code.google.com/p/gperftools).
AC_MSG_CHECKING([for __builtin_expect])
AC_SEARCH_LIBS([dlsym], [dl], [], [AC_MSG_ERROR([dlsym() is required])])
+AC_ARG_ENABLE([warnings],
+ [AS_HELP_STRING([--enable-warnings],[enable warning output])],
+ [if test "x$enableval" = xyes; then
+ AC_DEFINE([WARNING], 1, [Define to 1 enable warning output.])
+ fi])
AC_ARG_ENABLE([debug],
[AS_HELP_STRING([--enable-debug],[enable debug output])],
[if test "x$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])
dnl Used in tests/Makefile.am to build the test only if error() is available.