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dirmngr: New configure option --disable-libdns.

* configure.ac: Add option --disable-libdns
(USE_LIBDNS): New ac_subst and am_conditional.
(USE_C99_CFLAGS): Set only if libdns is used.
* dirmngr/Makefile.am (dirmngr_SOURCES): Move dns.c and dns.h to ...
(dirmngr_SOURCES) [USE_LIBDNS0: here.
(t_common_src): Ditto.
* dirmngr/dirmngr.c (oRecursiveResolver): New constant.
(opts): New option "--recursive-resolver".
(parse_rereadable_options): Set option.
* dirmngr/t-dns-stuff.c (main): Add option --recursive-resolver.
* dirmngr/server.c (cmd_getinfo): Depend output of "dnsinfo" on the
new variables.
* dirmngr/dns-stuff.c: Include dns.h only if USE_DNSLIB is defined.
Also build and call dnslib functions only if USE_DNSLIB is defined.
(recursive_resolver): New var.
(enable_recursive_resolver): New func.
(recursive_resolver_p): New func.
--

In case users run into problems building GnuPG, the configure option
allows to disable that support and continue w/o Tor support using the
system resolver.

--recursive-resolver was easy enough to implement and may be useful in
some situation.  It does not fully work, though.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2016-12-14 15:36:25 +01:00
parent 3c2a7918ea
commit d34a2bb410
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
9 changed files with 117 additions and 11 deletions

View file

@ -110,6 +110,7 @@ use_bzip2=yes
use_exec=yes
use_trust_models=yes
use_tofu=yes
use_libdns=yes
card_support=yes
use_ccid_driver=auto
dirmngr_auto_start=yes
@ -269,6 +270,16 @@ if test "$use_trust_models" = no && test "$use_tofu" = yes; then
AC_MSG_ERROR([both --disable-trust-models and --enable-tofu given])
fi
AC_MSG_CHECKING([whether to enable libdns])
AC_ARG_ENABLE(libdns,
AC_HELP_STRING([--disable-libdns],
[do not build with libdns support]),
use_libdns=$enableval, use_libdns=yes)
AC_MSG_RESULT($use_libdns)
if test x"$use_libdns" = xyes ; then
AC_DEFINE(USE_LIBDNS, 1, [Build with integrated libdns support])
fi
AM_CONDITIONAL(USE_LIBDNS, test "$use_libdns" = yes)
#
@ -1063,13 +1074,18 @@ if test "$build_dirmngr" = "yes"; then
if test x"$need_compat" = xyes ; then
AC_DEFINE(BIND_8_COMPAT,1,[an Apple OSXism])
fi
if test "$use_libdns" = yes; then
show_tor_support=yes
fi
elif test "$use_libdns" = yes; then
show_tor_support=yes
else
AC_MSG_WARN([[
***
*** The system's DNS resolver is not usable.
*** Dirmngr functionality is limited.
***]])
show_tor_support="${show_tor_support} (no system resolver)"
show_tor_support="${show_tor_support} (no system resolver)"
fi
LIBS=$_dns_save_libs
@ -1510,6 +1526,7 @@ AC_SUBST(W32SOCKLIBS)
#
# Setup gcc specific options
#
USE_C99_CFLAGS=
AC_MSG_NOTICE([checking for cc features])
if test "$GCC" = yes; then
mycflags=
@ -1577,9 +1594,10 @@ if test "$GCC" = yes; then
fi
CFLAGS="$mycflags $mycflags_save"
USE_C99_CFLAGS="-std=gnu99"
else
USE_C99_CFLAGS=
if test "$use_libdns" = yes; then
# dirmngr/dns.{c,h} require C99 and GNU extensions. */
USE_C99_CFLAGS="-std=gnu99"
fi
fi
AC_SUBST(USE_C99_CFLAGS)