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],
[Define to 1 to add extern declaration of program_invocation_short_name to argp.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],
[Define to 1 to add extern declaration of program_invocation_short_name to argp.h])],