2 dnl Copyright (C) 2003-2019 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
9 AC_REQUIRE([AC_C_INLINE])
10 AC_REQUIRE([AC_C_RESTRICT])
11 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
13 AC_CHECK_DECLS([program_invocation_name], [],
14 [AC_DEFINE([GNULIB_PROGRAM_INVOCATION_NAME], [1],
15 [Define to 1 to add extern declaration of program_invocation_name to argp.h])],
16 [[#include <errno.h>]])
17 AC_CHECK_DECLS([program_invocation_short_name], [],
18 [AC_DEFINE([GNULIB_PROGRAM_INVOCATION_SHORT_NAME], [1],
19 [Define to 1 to add extern declaration of program_invocation_short_name to argp.h])],
20 [[#include <errno.h>]])
22 # Check if program_invocation_name and program_invocation_short_name
23 # are defined elsewhere. It is improbable that only one of them will
24 # be defined and other not, I prefer to stay on the safe side and to
25 # test each one separately.
26 AC_MSG_CHECKING([whether program_invocation_name is defined])
27 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <argp.h>]],
28 [[program_invocation_name = "test";]])],
29 [AC_DEFINE([HAVE_PROGRAM_INVOCATION_NAME], [1],
30 [Define if program_invocation_name is defined])
31 AC_MSG_RESULT([yes])],
32 [AC_MSG_RESULT([no])])
34 AC_MSG_CHECKING([whether program_invocation_short_name is defined])
35 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <argp.h>]],
36 [[program_invocation_short_name = "test";]])],
37 [AC_DEFINE([HAVE_PROGRAM_INVOCATION_SHORT_NAME], [1],
38 [Define if program_invocation_short_name is defined])
39 AC_MSG_RESULT([yes])],
40 [AC_MSG_RESULT([no])])
42 AC_CHECK_DECLS_ONCE([clearerr_unlocked])
43 AC_CHECK_DECLS_ONCE([feof_unlocked])
44 AC_CHECK_DECLS_ONCE([ferror_unlocked])
45 AC_CHECK_DECLS_ONCE([fflush_unlocked])
46 AC_CHECK_DECLS_ONCE([fgets_unlocked])
47 AC_CHECK_DECLS_ONCE([fputc_unlocked])
48 AC_CHECK_DECLS_ONCE([fputs_unlocked])
49 AC_CHECK_DECLS_ONCE([fread_unlocked])
50 AC_CHECK_DECLS_ONCE([fwrite_unlocked])
51 AC_CHECK_DECLS_ONCE([getc_unlocked])
52 AC_CHECK_DECLS_ONCE([getchar_unlocked])
53 AC_CHECK_DECLS_ONCE([putc_unlocked])
54 AC_CHECK_DECLS_ONCE([putchar_unlocked])
55 AC_CHECK_FUNCS_ONCE([flockfile funlockfile])
56 AC_CHECK_HEADERS_ONCE([features.h linewrap.h])
57 AC_REQUIRE([AC_FUNC_STRERROR_R])
60 dnl argp-parse.c depends on GNU getopt internals, therefore use GNU getopt
62 AC_DEFUN([gl_REPLACE_GETOPT_ALWAYS], [])