[#include <errno.h>])
AC_CHECK_DECL([program_invocation_short_name],
[AC_DEFINE(HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME, 1,
[Define if program_invocation_short_name is declared])],
[AC_DEFINE(GNULIB_PROGRAM_INVOCATION_SHORT_NAME, 1,
[#include <errno.h>])
AC_CHECK_DECL([program_invocation_short_name],
[AC_DEFINE(HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME, 1,
[Define if program_invocation_short_name is declared])],
[AC_DEFINE(GNULIB_PROGRAM_INVOCATION_SHORT_NAME, 1,