1# argp.m4 serial 8
2dnl Copyright (C) 2003-2007 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN([gl_ARGP],
8[
9  AC_REQUIRE([AC_C_INLINE])
10  AC_REQUIRE([AC_C_RESTRICT])
11  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
12  dnl argp-parse.c depends on GNU getopt internals, therefore use GNU getopt
13  dnl always.
14  gl_GETOPT_SUBSTITUTE
15  dnl Note: gl_GETOPT_SUBSTITUTE does AC_LIBOBJ(getopt), AC_LIBOBJ(getopt1).
16
17  AC_CHECK_DECL([program_invocation_name],
18                [AC_DEFINE(HAVE_DECL_PROGRAM_INVOCATION_NAME, 1,
19                           [Define if program_invocation_name is declared])],
20	        [AC_DEFINE(GNULIB_PROGRAM_INVOCATION_NAME, 1,
21                           [Define to 1 to add extern declaration of program_invocation_name to argp.h])],
22                [#include <errno.h>])
23  AC_CHECK_DECL([program_invocation_short_name],
24                [AC_DEFINE(HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME, 1,
25                           [Define if program_invocation_short_name is declared])],
26	        [AC_DEFINE(GNULIB_PROGRAM_INVOCATION_SHORT_NAME, 1,
27                           [Define to 1 to add extern declaration of program_invocation_short_name to argp.h])],
28                [#include <errno.h>])
29
30  # Check if program_invocation_name and program_invocation_short_name
31  # are defined elsewhere. It is improbable that only one of them will
32  # be defined and other not, I prefer to stay on the safe side and to
33  # test each one separately.
34  AC_MSG_CHECKING(whether program_invocation_name is defined)
35  AC_TRY_COMPILE([#include <argp.h>],
36                 [ program_invocation_name = "test"; ],
37                 [ AC_DEFINE(HAVE_PROGRAM_INVOCATION_NAME,1,
38                   [Define if program_invocation_name is defined])
39                   AC_MSG_RESULT(yes)],
40                 [ AC_MSG_RESULT(no)] )
41
42  AC_MSG_CHECKING(whether program_invocation_short_name is defined)
43  AC_TRY_COMPILE([#include <argp.h>],
44                 [ program_invocation_short_name = "test"; ],
45                 [ AC_DEFINE(HAVE_PROGRAM_INVOCATION_SHORT_NAME,1,
46                   [Define if program_invocation_short_name is defined])
47                   AC_MSG_RESULT(yes)],
48                 [ AC_MSG_RESULT(no)] )
49
50  AC_CHECK_DECLS_ONCE([clearerr_unlocked])
51  AC_CHECK_DECLS_ONCE([feof_unlocked])
52  AC_CHECK_DECLS_ONCE([ferror_unlocked])
53  AC_CHECK_DECLS_ONCE([fflush_unlocked])
54  AC_CHECK_DECLS_ONCE([fgets_unlocked])
55  AC_CHECK_DECLS_ONCE([fputc_unlocked])
56  AC_CHECK_DECLS_ONCE([fputs_unlocked])
57  AC_CHECK_DECLS_ONCE([fread_unlocked])
58  AC_CHECK_DECLS_ONCE([fwrite_unlocked])
59  AC_CHECK_DECLS_ONCE([getc_unlocked])
60  AC_CHECK_DECLS_ONCE([getchar_unlocked])
61  AC_CHECK_DECLS_ONCE([putc_unlocked])
62  AC_CHECK_DECLS_ONCE([putchar_unlocked])
63  AC_CHECK_FUNCS_ONCE([flockfile funlockfile])
64  AC_CHECK_HEADERS_ONCE([features.h linewrap.h])
65])
66