2 dnl Copyright (C) 2003-2011 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_DECL([program_invocation_name],
14 [AC_DEFINE([HAVE_DECL_PROGRAM_INVOCATION_NAME], [1],
15 [Define if program_invocation_name is declared])],
16 [AC_DEFINE([GNULIB_PROGRAM_INVOCATION_NAME], [1],
17 [Define to 1 to add extern declaration of program_invocation_name to argp.h])],
19 AC_CHECK_DECL([program_invocation_short_name],
20 [AC_DEFINE([HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME], [1],
21 [Define if program_invocation_short_name is declared])],
22 [AC_DEFINE([GNULIB_PROGRAM_INVOCATION_SHORT_NAME], [1],
23 [Define to 1 to add extern declaration of program_invocation_short_name to argp.h])],
26 # Check if program_invocation_name and program_invocation_short_name
27 # are defined elsewhere. It is improbable that only one of them will
28 # be defined and other not, I prefer to stay on the safe side and to
29 # test each one separately.
30 AC_MSG_CHECKING([whether program_invocation_name is defined])
31 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <argp.h>]],
32 [[program_invocation_name = "test";]])],
33 [AC_DEFINE([HAVE_PROGRAM_INVOCATION_NAME], [1],
34 [Define if program_invocation_name is defined])
35 AC_MSG_RESULT([yes])],
36 [AC_MSG_RESULT([no])])
38 AC_MSG_CHECKING([whether program_invocation_short_name is defined])
39 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <argp.h>]],
40 [[program_invocation_short_name = "test";]])],
41 [AC_DEFINE([HAVE_PROGRAM_INVOCATION_SHORT_NAME], [1],
42 [Define if program_invocation_short_name is defined])
43 AC_MSG_RESULT([yes])],
44 [AC_MSG_RESULT([no])])
46 AC_CHECK_DECLS_ONCE([clearerr_unlocked])
47 AC_CHECK_DECLS_ONCE([feof_unlocked])
48 AC_CHECK_DECLS_ONCE([ferror_unlocked])
49 AC_CHECK_DECLS_ONCE([fflush_unlocked])
50 AC_CHECK_DECLS_ONCE([fgets_unlocked])
51 AC_CHECK_DECLS_ONCE([fputc_unlocked])
52 AC_CHECK_DECLS_ONCE([fputs_unlocked])
53 AC_CHECK_DECLS_ONCE([fread_unlocked])
54 AC_CHECK_DECLS_ONCE([fwrite_unlocked])
55 AC_CHECK_DECLS_ONCE([getc_unlocked])
56 AC_CHECK_DECLS_ONCE([getchar_unlocked])
57 AC_CHECK_DECLS_ONCE([putc_unlocked])
58 AC_CHECK_DECLS_ONCE([putchar_unlocked])
59 AC_CHECK_FUNCS_ONCE([flockfile funlockfile])
60 AC_CHECK_HEADERS_ONCE([features.h linewrap.h])
63 dnl argp-parse.c depends on GNU getopt internals, therefore use GNU getopt
65 AC_DEFUN([gl_REPLACE_GETOPT_ALWAYS], [])