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