m4/argp.m4

   1 # argp.m4 serial 7
   2 dnl Copyright (C) 2003-2006 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   AC_REQUIRE([gl_GETOPT_SUBSTITUTE])
  13
  14   AC_CHECK_DECL([program_invocation_name],
  15                 [AC_DEFINE(HAVE_DECL_PROGRAM_INVOCATION_NAME, 1,
  16                            [Define if program_invocation_name is declared])],
  17                 [AC_DEFINE(GNULIB_PROGRAM_INVOCATION_NAME, 1,
  18                            [Define to 1 to add extern declaration of program_invocation_name to argp-namefrob.h])],
  19                 [#include <errno.h>])
  20   AC_CHECK_DECL([program_invocation_short_name],
  21                 [AC_DEFINE(HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME, 1,
  22                            [Define if program_invocation_short_name is declared])],
  23                 [AC_DEFINE(GNULIB_PROGRAM_INVOCATION_SHORT_NAME, 1,
  24                            [Define to 1 to add extern declaration of program_invocation_short_name to argp-namefrob.h])],
  25                 [#include <errno.h>])
  26
  27   # Check if program_invocation_name and program_invocation_short_name
  28   # are defined elsewhere. It is improbable that only one of them will
  29   # be defined and other not, I prefer to stay on the safe side and to
  30   # test each one separately.
  31   AC_MSG_CHECKING(whether program_invocation_name is defined)
  32   AC_TRY_COMPILE([#include <argp.h>],
  33                  [ program_invocation_name = "test"; ],
  34                  [ AC_DEFINE(HAVE_PROGRAM_INVOCATION_NAME,1,
  35                    [Define if program_invocation_name is defined])
  36                    AC_MSG_RESULT(yes)],
  37                  [ AC_MSG_RESULT(no)] )
  38
  39   AC_MSG_CHECKING(whether program_invocation_short_name is defined)
  40   AC_TRY_COMPILE([#include <argp.h>],
  41                  [ program_invocation_short_name = "test"; ],
  42                  [ AC_DEFINE(HAVE_PROGRAM_INVOCATION_SHORT_NAME,1,
  43                    [Define if program_invocation_short_name is defined])
  44                    AC_MSG_RESULT(yes)],
  45                  [ AC_MSG_RESULT(no)] )
  46
  47   AC_CHECK_DECLS_ONCE([clearerr_unlocked])
  48   AC_CHECK_DECLS_ONCE([feof_unlocked])
  49   AC_CHECK_DECLS_ONCE([ferror_unlocked])
  50   AC_CHECK_DECLS_ONCE([fflush_unlocked])
  51   AC_CHECK_DECLS_ONCE([fgets_unlocked])
  52   AC_CHECK_DECLS_ONCE([fputc_unlocked])
  53   AC_CHECK_DECLS_ONCE([fputs_unlocked])
  54   AC_CHECK_DECLS_ONCE([fread_unlocked])
  55   AC_CHECK_DECLS_ONCE([fwrite_unlocked])
  56   AC_CHECK_DECLS_ONCE([getc_unlocked])
  57   AC_CHECK_DECLS_ONCE([getchar_unlocked])
  58   AC_CHECK_DECLS_ONCE([putc_unlocked])
  59   AC_CHECK_DECLS_ONCE([putchar_unlocked])
  60   AC_CHECK_FUNCS_ONCE([flockfile funlockfile])
  61   AC_CHECK_HEADERS_ONCE([features.h linewrap.h])
  62 ])