CFLAGS="-Wall -Wextra -Wconversion $CFLAGS"
fi
-AC_CHECK_HEADERS([fcntl.h error.h])
+AC_CHECK_HEADERS([error.h])
+AC_CHECK_HEADERS([fcntl.h],
+ [],[AC_MSG_ERROR([header is required])])
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_C_INLINE
AX_C___ATTRIBUTE__
+AC_CHECK_MEMBER([struct _IO_FILE._fileno],
+ [AC_DEFINE([HAVE_STRUCT__IO_FILE__FILENO], 1,
+ [Define to 1 if `_fileno' is a member of `struct _IO_FILE'.])],
+ [],[[#include <libio.h>]])
+
AC_FUNC_FORK
-AC_CHECK_FUNCS([dup2 memmove setenv strdup])
+AC_CHECK_FUNCS([memmove setenv],
+ [],[AC_MSG_ERROR([function is required])])
+AC_CHECK_FUNCS([execvpe])
dnl Thanks to gperftools' configure.ac (https://code.google.com/p/gperftools).
AC_MSG_CHECKING([for __builtin_expect])
AC_ARG_ENABLE([warnings],
[AS_HELP_STRING([--enable-warnings],[enable warning output])],
[if test "x$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])