git.cworth.org Git - tar/blob - m4/argp.m4

   1 # argp.m4 serial 9
   2 dnl Copyright (C) 2003-2007, 2009 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.
   6
   7 AC_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_LINK([#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_LINK([#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 ])