configure.in

   1 # configure.in - input to autoconf
   2 #
   3 #  This file is part of adns, which is
   4 #    Copyright (C) 1997-2000,2003,2006  Ian Jackson
   5 #    Copyright (C) 1999-2000,2003,2006  Tony Finch
   6 #    Copyright (C) 1991 Massachusetts Institute of Technology
   7 #  (See the file INSTALL for full details.)
   8 #
   9 #  This program is free software; you can redistribute it and/or modify
  10 #  it under the terms of the GNU General Public License as published by
  11 #  the Free Software Foundation; either version 3, or (at your option)
  12 #  any later version.
  13 #
  14 #  This program is distributed in the hope that it will be useful,
  15 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 #  GNU General Public License for more details.
  18 #
  19 #  You should have received a copy of the GNU General Public License
  20 #  along with this program; if not, write to the Free Software Foundation.
  21
  22 AC_INIT(src/adns.h)
  23 AC_CONFIG_HEADER(src/config.h)
  24
  25 dnl DPKG_CACHED_TRY_COMPILE(<description>,<cachevar>,<include>,<program>,<ifyes>,<ifno>)
  26 define([DPKG_CACHED_TRY_COMPILE],[
  27  AC_MSG_CHECKING($1)
  28  AC_CACHE_VAL($2,[
  29   AC_TRY_COMPILE([$3],[$4],[$2=yes],[$2=no])
  30  ])
  31  if test "x$$2" = xyes; then
  32   true
  33   $5
  34  else
  35   true
  36   $6
  37  fi
  38 ])
  39
  40 AC_MSG_CHECKING(whether you requested dynamic linking)
  41 AC_SUBST(ENABLE_DYNAMIC)
  42 AC_ARG_ENABLE(dynamic,
  43 [  --disable-dynamic       use static linking
  44   --enable-dynamic[=elf]  create and use ELF dynamic library (default)],
  45 [       case "$enableval" in
  46         elf|yes)
  47                 ENABLE_DYNAMIC=elf
  48                 AC_MSG_RESULT([yes (ELF)])
  49                 ;;
  50         no)     ENABLE_DYNAMIC=no
  51                 AC_MSG_RESULT(no)
  52                 ;;
  53         *)      AC_MSG_ERROR(
  54 ["invalid value $enableval for --enable-dynamic, try yes or elf"])
  55                 ;;
  56         esac
  57 ],[
  58                 ENABLE_DYNAMIC=elf
  59                 AC_MSG_RESULT([yes, by default])
  60 ])
  61
  62 AC_PROG_CC
  63 AC_PROG_CPP
  64 AC_PROG_RANLIB
  65 AC_PROG_INSTALL
  66
  67 AC_CHECK_FUNCS(poll)
  68 ADNS_C_GETFUNC(socket,socket)
  69 ADNS_C_GETFUNC(inet_ntoa,nsl)
  70
  71 PROGS_IF_TSEARCH=adnsresfilter
  72 AC_SUBST(PROGS_HAVE_TSEARCH)
  73 AC_CHECK_FUNC(tsearch,[
  74  PROGS_HAVE_TSEARCH=$PROGS_IF_TSEARCH
  75 ],[
  76  PROGS_HAVE_TSEARCH='';
  77  AC_MSG_WARN([tsearch missing - not building client program(s) $PROGS_IF_TSEARCH])
  78 ])
  79
  80 AC_MSG_CHECKING(for INADDR_LOOPBACK)
  81 AC_CACHE_VAL(adns_cv_decl_inaddrloopback,[
  82  AC_TRY_COMPILE([
  83 #include <sys/socket.h>
  84 #include <netinet/in.h>
  85 #include <arpa/inet.h>
  86  ],[
  87   INADDR_LOOPBACK;
  88  ],
  89  adns_cv_decl_inaddrloopback=yes,
  90  adns_cv_decl_inaddrloopback=no)])
  91 if test "$adns_cv_decl_inaddrloopback" = yes; then
  92  AC_MSG_RESULT(found)
  93 else
  94  AC_MSG_RESULT([not in standard headers, urgh...])
  95  AC_CHECK_HEADER(rpc/types.h,[
  96   AC_DEFINE(HAVEUSE_RPCTYPES_H)
  97  ],[
  98   AC_MSG_ERROR([cannot find INADDR_LOOPBACK or rpc/types.h])
  99  ])
 100 fi
 101
 102 ADNS_C_GETFUNC(inet_aton,resolv,[
 103  LIBS="-lresolv $LIBS";
 104  AC_MSG_WARN([inet_aton is in libresolv, urgh.  Must use -lresolv.])
 105 ])
 106
 107 DPKG_CACHED_TRY_COMPILE(inlines,dpkg_cv_c_inline,,
 108  [} inline int foo (int x) {],
 109  AC_MSG_RESULT(yes)
 110  AC_DEFINE(HAVE_INLINE),
 111  AC_MSG_RESULT(no))
 112
 113 AC_SUBST(WARNS)
 114
 115 if test "${GCC-no}" = yes; then
 116         WARNS="-Wall -Wmissing-prototypes -Wwrite-strings -Wstrict-prototypes -Wcast-qual -Wpointer-arith"
 117         saved_cflags="$CFLAGS"
 118         CFLAGS="$CFLAGS -Wno-pointer-sign"
 119         DPKG_CACHED_TRY_COMPILE(-Wno-pointer-sign,adns_cv_c_wnoptrsign,,
 120          [],
 121          AC_MSG_RESULT(yes)
 122          WARNS="$WARNS -Wno-pointer-sign",
 123          AC_MSG_RESULT(no))
 124         CFLAGS="$saved_cflags"
 125 else
 126         WARNS=
 127 fi
 128
 129 ADNS_C_GCCATTRIB
 130
 131 AC_SUBST(SHLIBCC)
 132 AC_SUBST(MKSHLIB_1)
 133 AC_SUBST(MKSHLIB_2)
 134 AC_SUBST(MKSHLIB_3)
 135
 136 AC_SUBST(SHLIBFORLINK)
 137 AC_SUBST(SHLIBFILE)
 138 AC_SUBST(SHLIBSONAME)
 139
 140 SHLIBFORLINK='libadns.so'
 141 SHLIBSONAME='$(SHLIBFORLINK).$(MAJOR)'
 142 SHLIBFILE='$(SHLIBSONAME).$(MINOR)'
 143
 144 SHLIBCC='$(CC) $(CFLAGS) -fpic'
 145 MKSHLIB_1='$(CC) $(LDFLAGS) -shared -Wl,-soname=$(SHLIBSONAME) -o'
 146 MKSHLIB_2=''
 147 MKSHLIB_3='-lc'
 148
 149 AC_OUTPUT(
 150         settings.make Makefile
 151         src/Makefile client/Makefile dynamic/Makefile regress/Makefile
 152 )