mdw@git.distorted.org.uk Git - adns/blob - aclocal.m4

   1 # aclocal.m4 - package-specific macros for autoconf
   2 #
   3 #  This file is part of adns, which is
   4 #    Copyright (C) 1997-2000,2003,2006,2014-2016  Ian Jackson
   5 #    Copyright (C) 2014  Mark Wooding
   6 #    Copyright (C) 1999-2000,2003,2006  Tony Finch
   7 #    Copyright (C) 1991 Massachusetts Institute of Technology
   8 #  (See the file INSTALL for full details.)
   9 #
  10 #  This program is free software; you can redistribute it and/or modify
  11 #  it under the terms of the GNU General Public License as published by
  12 #  the Free Software Foundation; either version 3, or (at your option)
  13 #  any later version.
  14 #
  15 #  This program is distributed in the hope that it will be useful,
  16 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 #  GNU General Public License for more details.
  19 #
  20 #  You should have received a copy of the GNU General Public License
  21 #  along with this program; if not, write to the Free Software Foundation.
  22
  23 dnl DPKG_CACHED_TRY_COMPILE(<description>,<cachevar>,<include>,<program>,<ifyes>,<ifno>)
  24 define(DPKG_CACHED_TRY_COMPILE,[
  25  AC_MSG_CHECKING($1)
  26  AC_CACHE_VAL($2,[
  27   AC_TRY_COMPILE([$3],[$4],[$2=yes],[$2=no])
  28  ])
  29  if test "x$$2" = xyes; then
  30   true
  31   $5
  32  else
  33   true
  34   $6
  35  fi
  36 ])
  37
  38 define(ADNS_C_GCCATTRIB,[
  39  DPKG_CACHED_TRY_COMPILE(__attribute__((,,)),adns_cv_c_attribute_supported,,
  40   [extern int testfunction(int x) __attribute__((,,))],
  41   AC_MSG_RESULT(yes)
  42   AC_DEFINE(HAVE_GNUC25_ATTRIB)
  43    DPKG_CACHED_TRY_COMPILE(__attribute__((noreturn)),adns_cv_c_attribute_noreturn,,
  44     [extern int testfunction(int x) __attribute__((noreturn))],
  45     AC_MSG_RESULT(yes)
  46     AC_DEFINE(HAVE_GNUC25_NORETURN),
  47     AC_MSG_RESULT(no))
  48    DPKG_CACHED_TRY_COMPILE(__attribute__((const)),adns_cv_c_attribute_const,,
  49     [extern int testfunction(int x) __attribute__((const))],
  50     AC_MSG_RESULT(yes)
  51     AC_DEFINE(HAVE_GNUC25_CONST),
  52     AC_MSG_RESULT(no))
  53    DPKG_CACHED_TRY_COMPILE(__attribute__((format...)),adns_cv_attribute_format,,
  54     [extern int testfunction(char *y, ...) __attribute__((format(printf,1,2)))],
  55     AC_MSG_RESULT(yes)
  56     AC_DEFINE(HAVE_GNUC25_PRINTFFORMAT),
  57     AC_MSG_RESULT(no)),
  58   AC_MSG_RESULT(no))
  59 ])
  60
  61 define(ADNS_C_GETFUNC,[
  62  AC_CHECK_FUNC([$1],,[
  63   AC_CHECK_LIB([$2],[$1],[$3],[
  64     AC_MSG_ERROR([cannot find library function $1])
  65   ])
  66  ])
  67 ])