+ * Documentation improved somewhat, including new GPL-vs-LGPL file.

[adns.git] / configure.in

diff --git a/configure.in b/configure.in
index 12b2d18c859698fc7a521fe00de0d3c5004e830e..55b81287e9dc519f1b79a15976d7da74b40e2c74 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1,11 +1,11 @@
 # configure.in - input to autoconf
 #  
 #  This file is
-#    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
+#    Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
 #
 #  It is part of adns, which is
-#    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
-#    Copyright (C) 1999 Tony Finch <dot@dotat.at>
+#    Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
+#    Copyright (C) 1999-2000 Tony Finch <dot@dotat.at>
 #  
 #  This program is free software; you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
@@ -23,14 +23,62 @@
 
 AC_INIT(src/adns.h)
 AC_CONFIG_HEADER(src/config.h)
+
+dnl DPKG_CACHED_TRY_COMPILE(<description>,<cachevar>,<include>,<program>,<ifyes>,<ifno>)
+define(DPKG_CACHED_TRY_COMPILE,[
+ AC_MSG_CHECKING($1)
+ AC_CACHE_VAL($2,[
+  AC_TRY_COMPILE([$3],[$4],[$2=yes],[$2=no])
+ ])
+ if test "x$$2" = xyes; then
+  true
+  $5
+ else
+  true
+  $6
+ fi
+])
+
+AC_MSG_CHECKING(whether you requested dynamic linking)
+AC_SUBST(ENABLE_DYNAMIC)
+AC_ARG_ENABLE(dynamic,
+[  --disable-dynamic       use static linking
+  --enable-dynamic[=elf]  create and use ELF dynamic library (default)],
+[      case "$enableval" in
+       elf|yes)
+               ENABLE_DYNAMIC=elf
+               AC_MSG_RESULT([yes (ELF)])
+               ;;
+       no)     ENABLE_DYNAMIC=no
+               AC_MSG_RESULT(no)
+               ;;
+       *)      AC_MSG_ERROR(
+["invalid value $enableval for --enable-dynamic, try yes or elf"])
+               ;;
+       esac
+],[
+               ENABLE_DYNAMIC=elf
+               AC_MSG_RESULT([yes, by default])
+])
+
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_RANLIB
+AC_PROG_INSTALL
 
 AC_CHECK_FUNCS(poll)
 ADNS_C_GETFUNC(socket,socket)
 ADNS_C_GETFUNC(inet_ntoa,nsl)
 
+PROGS_IF_TSEARCH=adnsresfilter
+AC_SUBST(PROGS_HAVE_TSEARCH)
+AC_CHECK_FUNC(tsearch,[
+ PROGS_HAVE_TSEARCH=$PROGS_IF_TSEARCH
+],[
+ PROGS_HAVE_TSEARCH='';
+ AC_MSG_WARN([tsearch missing - not building client program(s) $PROGS_IF_TSEARCH])
+])
+
 AC_MSG_CHECKING(for INADDR_LOOPBACK)
 AC_CACHE_VAL(adns_cv_decl_inaddrloopback,[
  AC_TRY_COMPILE([
@@ -58,7 +106,14 @@ ADNS_C_GETFUNC(inet_aton,resolv,[
  AC_MSG_WARN([inet_aton is in libresolv, urgh.  Must use -lresolv.])
 ])
 
+DPKG_CACHED_TRY_COMPILE(inlines,dpkg_cv_c_inline,,
+ [} inline int foo (int x) {],
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_INLINE),
+ AC_MSG_RESULT(no))
+
 ADNS_C_GCCATTRIB
+AC_CHECK_HEADERS(sys/select.h)
 
 AC_SUBST(WARNS)