# argp.m4 serial 11

dnl Copyright (C) 2003-2010 Free Software Foundation, Inc.

dnl This file is free software; the Free Software Foundation

dnl gives unlimited permission to copy and/or distribute it,

dnl with or without modifications, as long as this notice is preserved.

AC_DEFUN([gl_ARGP],

[

AC_REQUIRE([AC_C_INLINE])

AC_REQUIRE([AC_C_RESTRICT])

AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])

dnl argp-parse.c depends on GNU getopt internals, therefore use GNU getopt

dnl always.

gl_REPLACE_GETOPT

dnl Note: gl_REPLACE_GETOPT does AC_LIBOBJ([getopt]), AC_LIBOBJ([getopt1]).

AC_CHECK_DECL([program_invocation_name],

[AC_DEFINE([HAVE_DECL_PROGRAM_INVOCATION_NAME], [1],

[Define if program_invocation_name is declared])],

[AC_DEFINE([GNULIB_PROGRAM_INVOCATION_NAME], [1],

[Define to 1 to add extern declaration of program_invocation_name to argp.h])],

[#include <errno.h>])

AC_CHECK_DECL([program_invocation_short_name],

[AC_DEFINE([HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME], [1],

[Define if program_invocation_short_name is declared])],

[AC_DEFINE([GNULIB_PROGRAM_INVOCATION_SHORT_NAME], [1],

[Define to 1 to add extern declaration of program_invocation_short_name to argp.h])],

[#include <errno.h>])

# Check if program_invocation_name and program_invocation_short_name

# are defined elsewhere. It is improbable that only one of them will

# be defined and other not, I prefer to stay on the safe side and to

# test each one separately.

AC_MSG_CHECKING([whether program_invocation_name is defined])

AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <argp.h>]],

[[program_invocation_name = "test";]])],

[AC_DEFINE([HAVE_PROGRAM_INVOCATION_NAME], [1],

[Define if program_invocation_name is defined])

AC_MSG_RESULT([yes])],

[AC_MSG_RESULT([no])])

AC_MSG_CHECKING([whether program_invocation_short_name is defined])

AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <argp.h>]],

[[program_invocation_short_name = "test";]])],

[AC_DEFINE([HAVE_PROGRAM_INVOCATION_SHORT_NAME], [1],

[Define if program_invocation_short_name is defined])

AC_MSG_RESULT([yes])],

[AC_MSG_RESULT([no])])

AC_CHECK_DECLS_ONCE([clearerr_unlocked])

AC_CHECK_DECLS_ONCE([feof_unlocked])

AC_CHECK_DECLS_ONCE([ferror_unlocked])

AC_CHECK_DECLS_ONCE([fflush_unlocked])

AC_CHECK_DECLS_ONCE([fgets_unlocked])

AC_CHECK_DECLS_ONCE([fputc_unlocked])

AC_CHECK_DECLS_ONCE([fputs_unlocked])

AC_CHECK_DECLS_ONCE([fread_unlocked])

AC_CHECK_DECLS_ONCE([fwrite_unlocked])

AC_CHECK_DECLS_ONCE([getc_unlocked])

AC_CHECK_DECLS_ONCE([getchar_unlocked])

AC_CHECK_DECLS_ONCE([putc_unlocked])

AC_CHECK_DECLS_ONCE([putchar_unlocked])

AC_CHECK_FUNCS_ONCE([flockfile funlockfile])

AC_CHECK_HEADERS_ONCE([features.h linewrap.h])

])