AC_DEFUN([gl_ARGP],
[
AC_REQUIRE([AC_C_INLINE])
AC_REQUIRE([AC_C_RESTRICT])
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
gl_GETOPT_SUBSTITUTE
AC_CHECK_DECL([program_invocation_name],
[AC_DEFINE(HAVE_DECL_PROGRAM_INVOCATION_NAME, 1,
[Define if program_invocation_name is declared])],
[AC_DEFINE(GNULIB_PROGRAM_INVOCATION_NAME, 1,
[Define to 1 to add extern declaration of program_invocation_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])],
[
AC_MSG_CHECKING(whether program_invocation_name is defined)
AC_TRY_COMPILE([ [ program_invocation_name = "test"; ],
[ AC_DEFINE(HAVE_PROGRAM_INVOCATION_NAME,1,
[Define if program_invocation_name is defined])
AC_MSG_RESULT(yes)],
[ AC_MSG_RESULT(no)] )
AC_MSG_CHECKING(whether program_invocation_short_name is defined)
AC_TRY_COMPILE([ [ program_invocation_short_name = "test"; ],
[ AC_DEFINE(HAVE_PROGRAM_INVOCATION_SHORT_NAME,1,
[Define if program_invocation_short_name is defined])
AC_MSG_RESULT(yes)],
[ AC_MSG_RESULT(no)] )
AC_CHECK_DECLS_ONCE([clearerr_unlocked])
AC_CHECK_DECLS_ONCE([feof_unlocked])
AC_CHECK_DECLS_ONCE([ferror_unlocked])
AC_CHECK_DECLS_ONCE([fflush_unlocked])
AC_CHECK_DECLS_ONCE([fgets_unlocked])
AC_CHECK_DECLS_ONCE([fputc_unlocked])
AC_CHECK_DECLS_ONCE([fputs_unlocked])
AC_CHECK_DECLS_ONCE([fread_unlocked])
AC_CHECK_DECLS_ONCE([fwrite_unlocked])
AC_CHECK_DECLS_ONCE([getc_unlocked])
AC_CHECK_DECLS_ONCE([getchar_unlocked])
AC_CHECK_DECLS_ONCE([putc_unlocked])
AC_CHECK_DECLS_ONCE([putchar_unlocked])
AC_CHECK_FUNCS_ONCE([flockfile funlockfile])
AC_CHECK_HEADERS_ONCE([features.h linewrap.h])
])