# -*- Autoconf -*- # Process this file with autoconf to produce a configure script. AC_PREREQ([2.56]) sinclude(acx_nlnetlabs.m4) sinclude(ax_pthread.m4) sinclude(acx_python.m4) sinclude(ax_pkg_swig.m4) sinclude(dnstap/dnstap.m4) sinclude(dnscrypt/dnscrypt.m4) # must be numbers. ac_defun because of later processing m4_define([VERSION_MAJOR],[1]) m4_define([VERSION_MINOR],[21]) m4_define([VERSION_MICRO],[1]) AC_INIT([unbound],m4_defn([VERSION_MAJOR]).m4_defn([VERSION_MINOR]).m4_defn([VERSION_MICRO]),[unbound-bugs@nlnetlabs.nl or https://github.com/NLnetLabs/unbound/issues],[unbound]) AC_SUBST(UNBOUND_VERSION_MAJOR, [VERSION_MAJOR]) AC_SUBST(UNBOUND_VERSION_MINOR, [VERSION_MINOR]) AC_SUBST(UNBOUND_VERSION_MICRO, [VERSION_MICRO]) LIBUNBOUND_CURRENT=9 LIBUNBOUND_REVISION=29 LIBUNBOUND_AGE=1 # 1.0.0 had 0:12:0 # 1.0.1 had 0:13:0 # 1.0.2 had 0:14:0 # 1.1.0 had 0:15:0 # 1.1.1 had 0:16:0 # 1.2.0 had 0:17:0 # 1.2.1 had 0:18:0 # 1.3.0 had 1:0:0 # ub_cancel and -export-symbols. # 1.3.1 had 1:1:0 # 1.3.2 had 1:2:0 # 1.3.3 had 1:3:0 # 1.3.4 had 1:4:0 # 1.4.0-snapshots had 1:5:0 # 1.4.0 had 1:5:0 (not 2:0:0) # ub_result.why_bogus # 1.4.1 had 2:1:0 # 1.4.2 had 2:2:0 # 1.4.3 had 2:3:0 # 1.4.4 had 2:4:0 # 1.4.5 had 2:5:0 # 1.4.6 had 2:6:0 # 1.4.7 had 2:7:0 # 1.4.8 had 2:8:0 # 1.4.9 had 2:9:0 # 1.4.10 had 2:10:0 # 1.4.11 had 2:11:0 # 1.4.12 had 2:12:0 # 1.4.13 had 2:13:0 # and 1.4.13p1 and 1.4.13.p2 # 1.4.14 had 2:14:0 # 1.4.15 had 3:0:1 # adds ub_version() # 1.4.16 had 3:1:1 # 1.4.17 had 3:2:1 # 1.4.18 had 3:3:1 # 1.4.19 had 3:4:1 # 1.4.20 had 4:0:2 # adds libunbound.ttl # but shipped 3:5:1 # 1.4.21 had 4:1:2 # 1.4.22 had 4:1:2 # 1.5.0 had 5:3:3 # adds ub_ctx_add_ta_autr # 1.5.1 had 5:3:3 # 1.5.2 had 5:5:3 # 1.5.3 had 5:6:3 # 1.5.4 had 5:7:3 # 1.5.5 had 5:8:3 # 1.5.6 had 5:9:3 # 1.5.7 had 5:10:3 # 1.5.8 had 6:0:4 # adds ub_ctx_set_stub # 1.5.9 had 6:1:4 # 1.5.10 had 6:2:4 # 1.6.0 had 6:3:4 # 1.6.1 had 7:0:5 # ub_callback_t typedef renamed to ub_callback_type # 1.6.2 had 7:1:5 # 1.6.3 had 7:2:5 # 1.6.4 had 7:3:5 # 1.6.5 had 7:4:5 # 1.6.6 had 7:5:5 # 1.6.7 had 7:6:5 # 1.6.8 had 7:7:5 # 1.7.0 had 7:8:5 # 1.7.1 had 7:9:5 # 1.7.2 had 7:10:5 # 1.7.3 had 7:11:5 # 1.8.0 had 8:0:0 # changes the event callback function signature # 1.8.1 had 8:1:0 # 1.8.2 had 8:2:0 # 1.8.3 had 8:3:0 # 1.9.0 had 9:0:1 # add ub_ctx_set_tls # 1.9.1 had 9:1:1 # 1.9.2 had 9:2:1 # 1.9.3 had 9:3:1 # 1.9.4 had 9:4:1 # 1.9.5 had 9:5:1 # 1.9.6 had 9:6:1 # 1.10.0 had 9:7:1 # 1.10.1 had 9:8:1 # 1.11.0 had 9:9:1 # 1.12.0 had 9:10:1 # 1.13.0 had 9:11:1 # 1.13.1 had 9:12:1 # 1.13.2 had 9:13:1 # 1.14.0 had 9:14:1 # 1.15.0 had 9:15:1 # 1.16.0 had 9:16:1 # 1.16.1 had 9:17:1 # 1.16.2 had 9:18:1 # 1.16.3 had 9:19:1 # 1.17.0 had 9:20:1 # 1.17.1 had 9:21:1 # 1.18.0 had 9:22:1 # 1.19.0 had 9:23:1 # 1.19.1 had 9:24:1 # 1.19.2 had 9:25:1 # 1.19.3 had 9:26:1 # 1.20.0 had 9:27:1 # 1.21.0 had 9:28:1 # 1.21.1 had 9:29:1 # Current -- the number of the binary API that we're implementing # Revision -- which iteration of the implementation of the binary # API are we supplying? # Age -- How many previous binary API versions do we also # support? # # If we release a new version that does not change the binary API, # increment Revision. # # If we release a new version that changes the binary API, but does # not break programs compiled against the old binary API, increment # Current and Age. Set Revision to 0, since this is the first # implementation of the new API. # # Otherwise, we're changing the binary API and breaking backward # compatibility with old binaries. Increment Current. Set Age to 0, # since we're backward compatible with no previous APIs. Set Revision # to 0 too. AC_SUBST(LIBUNBOUND_CURRENT) AC_SUBST(LIBUNBOUND_REVISION) AC_SUBST(LIBUNBOUND_AGE) cmdln="`echo $@ | sed -e 's/\\\\/\\\\\\\\/g' | sed -e 's/"/\\\\"/'g`" AC_DEFINE_UNQUOTED(CONFCMDLINE, ["$cmdln"], [Command line arguments used with configure]) CFLAGS="$CFLAGS" AC_USE_SYSTEM_EXTENSIONS if test "$ac_cv_header_minix_config_h" = "yes"; then AC_DEFINE(_NETBSD_SOURCE,1, [Enable for compile on Minix]) fi dnl dnl By default set prefix to /usr/local dnl case "$prefix" in NONE) prefix="/usr/local" ;; esac case "$exec_prefix" in NONE) exec_prefix="$prefix" ;; esac # are we on MinGW? if uname -s 2>&1 | grep MINGW >/dev/null; then on_mingw="yes" else if echo $host | grep mingw >/dev/null; then on_mingw="yes" else on_mingw="no"; fi fi # # Determine configuration file # the eval is to evaluate shell expansion twice UNBOUND_SBIN_DIR=`eval echo "${sbindir}"` AC_SUBST(UNBOUND_SBIN_DIR) UNBOUND_SYSCONF_DIR=`eval echo "${sysconfdir}"` AC_SUBST(UNBOUND_SYSCONF_DIR) UNBOUND_LOCALSTATE_DIR=`eval echo "${localstatedir}"` AC_SUBST(UNBOUND_LOCALSTATE_DIR) if test $on_mingw = "no"; then ub_conf_file=`eval echo "${sysconfdir}/unbound/unbound.conf"` else ub_conf_file="C:\\Program Files\\Unbound\\service.conf" fi AC_ARG_WITH([conf_file], AS_HELP_STRING([--with-conf-file=path],[Pathname to the Unbound configuration file]), [ub_conf_file="$withval"]) AC_SUBST(ub_conf_file) ACX_ESCAPE_BACKSLASH($ub_conf_file, hdr_config) AC_DEFINE_UNQUOTED(CONFIGFILE, ["$hdr_config"], [Pathname to the Unbound configuration file]) ub_conf_dir=`AS_DIRNAME(["$ub_conf_file"])` AC_SUBST(ub_conf_dir) # Determine run, chroot directory and pidfile locations AC_ARG_WITH(run-dir, AS_HELP_STRING([--with-run-dir=path],[set default directory to chdir to (by default dir part of cfg file)]), UNBOUND_RUN_DIR="$withval", if test $on_mingw = no; then UNBOUND_RUN_DIR=`dirname "$ub_conf_file"` else UNBOUND_RUN_DIR="" fi ) AC_SUBST(UNBOUND_RUN_DIR) ACX_ESCAPE_BACKSLASH($UNBOUND_RUN_DIR, hdr_run) AC_DEFINE_UNQUOTED(RUN_DIR, ["$hdr_run"], [Directory to chdir to]) AC_ARG_WITH(chroot-dir, AS_HELP_STRING([--with-chroot-dir=path],[set default directory to chroot to (by default same as run-dir)]), UNBOUND_CHROOT_DIR="$withval", if test $on_mingw = no; then UNBOUND_CHROOT_DIR="$UNBOUND_RUN_DIR" else UNBOUND_CHROOT_DIR="" fi ) AC_SUBST(UNBOUND_CHROOT_DIR) ACX_ESCAPE_BACKSLASH($UNBOUND_CHROOT_DIR, hdr_chroot) AC_DEFINE_UNQUOTED(CHROOT_DIR, ["$hdr_chroot"], [Directory to chroot to]) AC_ARG_WITH(share-dir, AS_HELP_STRING([--with-share-dir=path],[set default directory with shared data (by default same as share/unbound)]), UNBOUND_SHARE_DIR="$withval", UNBOUND_SHARE_DIR="$UNBOUND_RUN_DIR") AC_SUBST(UNBOUND_SHARE_DIR) AC_DEFINE_UNQUOTED(SHARE_DIR, ["$UNBOUND_SHARE_DIR"], [Shared data]) AC_ARG_WITH(pidfile, AS_HELP_STRING([--with-pidfile=filename],[set default pathname to unbound pidfile (default run-dir/unbound.pid)]), UNBOUND_PIDFILE="$withval", if test $on_mingw = no; then UNBOUND_PIDFILE="$UNBOUND_RUN_DIR/unbound.pid" else UNBOUND_PIDFILE="" fi ) AC_SUBST(UNBOUND_PIDFILE) ACX_ESCAPE_BACKSLASH($UNBOUND_PIDFILE, hdr_pid) AC_DEFINE_UNQUOTED(PIDFILE, ["$hdr_pid"], [default pidfile location]) AC_ARG_WITH(rootkey-file, AS_HELP_STRING([--with-rootkey-file=filename],[set default pathname to root key file (default run-dir/root.key). This file is read and written.]), UNBOUND_ROOTKEY_FILE="$withval", if test $on_mingw = no; then UNBOUND_ROOTKEY_FILE="$UNBOUND_RUN_DIR/root.key" else UNBOUND_ROOTKEY_FILE="C:\\Program Files\\Unbound\\root.key" fi ) AC_SUBST(UNBOUND_ROOTKEY_FILE) ACX_ESCAPE_BACKSLASH($UNBOUND_ROOTKEY_FILE, hdr_rkey) AC_DEFINE_UNQUOTED(ROOT_ANCHOR_FILE, ["$hdr_rkey"], [default rootkey location]) AC_ARG_WITH(rootcert-file, AS_HELP_STRING([--with-rootcert-file=filename],[set default pathname to root update certificate file (default run-dir/icannbundle.pem). This file need not exist if you are content with the builtin.]), UNBOUND_ROOTCERT_FILE="$withval", if test $on_mingw = no; then UNBOUND_ROOTCERT_FILE="$UNBOUND_RUN_DIR/icannbundle.pem" else UNBOUND_ROOTCERT_FILE="C:\\Program Files\\Unbound\\icannbundle.pem" fi ) AC_SUBST(UNBOUND_ROOTCERT_FILE) ACX_ESCAPE_BACKSLASH($UNBOUND_ROOTCERT_FILE, hdr_rpem) AC_DEFINE_UNQUOTED(ROOT_CERT_FILE, ["$hdr_rpem"], [default rootcert location]) AC_ARG_WITH(username, AS_HELP_STRING([--with-username=user],[set default user that unbound changes to (default user is unbound)]), UNBOUND_USERNAME="$withval", UNBOUND_USERNAME="unbound") AC_SUBST(UNBOUND_USERNAME) AC_DEFINE_UNQUOTED(UB_USERNAME, ["$UNBOUND_USERNAME"], [default username]) AC_DEFINE(WINVER, 0x0502, [the version of the windows API enabled]) ACX_RSRC_VERSION(wnvs) AC_DEFINE_UNQUOTED(RSRC_PACKAGE_VERSION, [$wnvs], [version number for resource files]) # Check for 'grep -e' program, here, since ACX_CHECK_FLTO needs that. AC_PROG_GREP # Checks for typedefs, structures, and compiler characteristics. AC_C_CONST AC_LANG([C]) # allow user to override the -g -O2 flags. default_cflags=no if test "x$CFLAGS" = "x" ; then ACX_CHECK_COMPILER_FLAG(g, [CFLAGS="$CFLAGS -g"]) ACX_CHECK_COMPILER_FLAG(O2, [CFLAGS="$CFLAGS -O2"]) default_cflags=yes fi m4_version_prereq([2.70], [AC_PROG_CC], [AC_PROG_CC_STDC]) ACX_DEPFLAG ACX_DETERMINE_EXT_FLAGS_UNBOUND # debug mode flags warnings AC_ARG_ENABLE(checking, AS_HELP_STRING([--enable-checking],[Enable warnings, asserts, makefile-dependencies])) AC_ARG_ENABLE(debug, AS_HELP_STRING([--enable-debug],[same as enable-checking])) if test "$enable_debug" = "yes"; then debug_enabled="$enable_debug"; else debug_enabled="$enable_checking"; fi AC_SUBST(debug_enabled) case "$debug_enabled" in yes) ACX_CHECK_COMPILER_FLAG(W, [CFLAGS="$CFLAGS -W"]) ACX_CHECK_COMPILER_FLAG(Wall, [CFLAGS="$CFLAGS -Wall"]) ACX_CHECK_COMPILER_FLAG(Wextra, [CFLAGS="$CFLAGS -Wextra"]) ACX_CHECK_COMPILER_FLAG(Wdeclaration-after-statement, [CFLAGS="$CFLAGS -Wdeclaration-after-statement"]) AC_DEFINE([UNBOUND_DEBUG], [], [define this to enable debug checks.]) ;; no|*) # nothing to do. ;; esac if test "$default_cflags" = "yes"; then # only when CFLAGS was "" at the start, if the users wants to # override we shouldn't add default cflags, because they wouldn't # be able to turn off these options and set the CFLAGS wanted. ACX_CHECK_FLTO ACX_CHECK_PIE ACX_CHECK_RELRO_NOW fi AC_C_INLINE ACX_CHECK_FORMAT_ATTRIBUTE ACX_CHECK_UNUSED_ATTRIBUTE AC_DEFUN([CHECK_WEAK_ATTRIBUTE], [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "weak" attribute) AC_CACHE_VAL(ac_cv_c_weak_attribute, [ac_cv_c_weak_attribute=no AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include __attribute__((weak)) void f(int x) { printf("%d", x); } ]], [[ f(1); ]])],[ac_cv_c_weak_attribute="yes"],[ac_cv_c_weak_attribute="no"]) ]) AC_MSG_RESULT($ac_cv_c_weak_attribute) if test $ac_cv_c_weak_attribute = yes; then AC_DEFINE(HAVE_ATTR_WEAK, 1, [Whether the C compiler accepts the "weak" attribute]) AC_DEFINE(ATTR_WEAK, [__attribute__((weak))], [apply the weak attribute to a symbol]) else AC_DEFINE(ATTR_WEAK,[], [apply the weak attribute to a symbol]) fi ])dnl End of CHECK_WEAK_ATTRIBUTE CHECK_WEAK_ATTRIBUTE AC_DEFUN([CHECK_NORETURN_ATTRIBUTE], [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "noreturn" attribute) AC_CACHE_VAL(ac_cv_c_noreturn_attribute, [ac_cv_c_noreturn_attribute=no AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include __attribute__((noreturn)) void f(int x) { printf("%d", x); } ]], [[ f(1); ]])],[ac_cv_c_noreturn_attribute="yes"],[ac_cv_c_noreturn_attribute="no"]) ]) AC_MSG_RESULT($ac_cv_c_noreturn_attribute) if test $ac_cv_c_noreturn_attribute = yes; then AC_DEFINE(HAVE_ATTR_NORETURN, 1, [Whether the C compiler accepts the "noreturn" attribute]) AC_DEFINE(ATTR_NORETURN, [__attribute__((__noreturn__))], [apply the noreturn attribute to a function that exits the program]) else AC_DEFINE(ATTR_NORETURN,[], [apply the noreturn attribute to a function that exits the program]) fi ])dnl End of CHECK_NORETURN_ATTRIBUTE CHECK_NORETURN_ATTRIBUTE AC_DEFUN([CHECK_FALLTHROUGH_ATTRIBUTE], [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "fallthrough" attribute) BAKCFLAGS="$CFLAGS" CFLAGS="$CFLAGS -Werror" AC_CACHE_VAL(ac_cv_c_fallthrough_attribute, [ac_cv_c_fallthrough_attribute=no AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include void f(int x) { int y = 0; switch(x) { case 1: y = 1; __attribute__((fallthrough)); /* fallthrough */ case 2: y++; break; case 3: y = 3; break; } printf("%d", y); } ]], [[ f(1); ]])],[ac_cv_c_fallthrough_attribute="yes"],[ac_cv_c_fallthrough_attribute="no"]) ]) CFLAGS="$BAKCFLAGS" AC_MSG_RESULT($ac_cv_c_fallthrough_attribute) if test $ac_cv_c_fallthrough_attribute = yes; then AC_DEFINE(HAVE_ATTR_FALLTHROUGH, 1, [Whether the C compiler accepts the "fallthrough" attribute]) AC_DEFINE(ATTR_FALLTHROUGH, [__attribute__((fallthrough));], [apply the fallthrough attribute.]) else AC_DEFINE(ATTR_FALLTHROUGH,[], [apply the fallthrough attribute.]) fi ])dnl End of CHECK_FALLTHROUGH_ATTRIBUTE CHECK_FALLTHROUGH_ATTRIBUTE if test "$srcdir" != "."; then CPPFLAGS="$CPPFLAGS -I$srcdir" fi AC_DEFUN([ACX_YYLEX_DESTROY], [ AC_MSG_CHECKING([for yylex_destroy]) if echo %% | $LEX -t 2>&1 | grep yylex_destroy >/dev/null 2>&1; then AC_DEFINE(LEX_HAS_YYLEX_DESTROY, 1, [if lex has yylex_destroy]) AC_MSG_RESULT(yes) else AC_MSG_RESULT(no); LEX=":" fi ]) AC_DEFUN([ACX_YYLEX_OPTION], [ AC_MSG_CHECKING([for lex %option]) if cat <&1 | grep yy_delete_buffer >/dev/null 2>&1; then %option nounput %% EOF AC_MSG_RESULT(yes) else AC_MSG_RESULT(no); LEX=":" fi ]) AC_PROG_LEX([noyywrap]) if test "$LEX" != "" -a "$LEX" != ":"; then ACX_YYLEX_DESTROY fi if test "$LEX" != "" -a "$LEX" != ":"; then ACX_YYLEX_OPTION fi if test "$LEX" = "" -o "$LEX" = ":"; then if test ! -f util/configlexer.c; then AC_MSG_ERROR([no lex and no util/configlexer.c: need flex and bison to compile from source repository.]) fi fi AC_PROG_YACC if test "$YACC" = "" -o "$YACC" = ":"; then if test ! -f util/configparser.c; then AC_MSG_ERROR([no yacc and no util/configparser.c: need flex and bison to compile from source repository.]) fi fi AC_CHECK_PROG(doxygen, doxygen, doxygen) AC_CHECK_TOOL(STRIP, strip) ACX_LIBTOOL_C_ONLY # pkg-config is only needed for these options, do not require it otherwise if test "$enable_systemd" = "yes" -o "$enable_dnstap" = "yes" -o "$with_pyunbound" = "yes" -o "$with_pythonmod" = "yes"; then PKG_PROG_PKG_CONFIG fi # Checks for header files. AC_CHECK_HEADERS([stdarg.h stdbool.h netinet/in.h netinet/tcp.h sys/param.h sys/select.h sys/socket.h sys/un.h sys/uio.h sys/resource.h arpa/inet.h syslog.h netdb.h sys/wait.h pwd.h glob.h grp.h login_cap.h winsock2.h ws2tcpip.h endian.h sys/endian.h libkern/OSByteOrder.h sys/ipc.h sys/shm.h ifaddrs.h poll.h],,, [AC_INCLUDES_DEFAULT]) # net/if.h portability for Darwin see: # https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Header-Portability.html AC_CHECK_HEADERS([net/if.h],,, [ #include #ifdef STDC_HEADERS # include # include #else # ifdef HAVE_STDLIB_H # include # endif #endif #ifdef HAVE_SYS_SOCKET_H # include #endif ]) # Check for Apple header. This uncovers TARGET_OS_IPHONE, TARGET_OS_TV or TARGET_OS_WATCH AC_CHECK_HEADERS([TargetConditionals.h],,, [AC_INCLUDES_DEFAULT]) AC_CHECK_HEADERS([netioapi.h],,, [AC_INCLUDES_DEFAULT #if HAVE_SYS_PARAM_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_SYS_UIO_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif #ifdef HAVE_NETINET_TCP_H #include #endif #ifdef HAVE_ARPA_INET_H #include #endif #ifdef HAVE_WINSOCK2_H #include #endif #ifdef HAVE_WS2TCPIP_H #include #endif ]) # Check for Linux timestamping headers AC_CHECK_HEADERS([linux/net_tstamp.h],,, [AC_INCLUDES_DEFAULT]) # check for types. # Using own tests for int64* because autoconf builtin only give 32bit. AC_CHECK_TYPE(int8_t, signed char) AC_CHECK_TYPE(int16_t, short) AC_CHECK_TYPE(int32_t, int) AC_CHECK_TYPE(int64_t, long long) AC_CHECK_TYPE(uint8_t, unsigned char) AC_CHECK_TYPE(uint16_t, unsigned short) AC_CHECK_TYPE(uint32_t, unsigned int) AC_CHECK_TYPE(uint64_t, unsigned long long) AC_TYPE_SIZE_T AC_CHECK_TYPE(ssize_t, int) AC_TYPE_UID_T AC_TYPE_PID_T AC_TYPE_OFF_T ACX_TYPE_U_CHAR ACX_TYPE_RLIM_T ACX_TYPE_SOCKLEN_T ACX_TYPE_IN_ADDR_T ACX_TYPE_IN_PORT_T ACX_CHECK_MEMCMP_SIGNED AC_CHECK_SIZEOF(time_t,,[ AC_INCLUDES_DEFAULT #ifdef TIME_WITH_SYS_TIME # include # include #else # ifdef HAVE_SYS_TIME_H # include # else # include # endif #endif ]) AC_CHECK_SIZEOF(size_t) # add option to disable the evil rpath ACX_ARG_RPATH AC_SUBST(RUNTIME_PATH) # check to see if libraries are needed for these functions. AC_SEARCH_LIBS([inet_pton], [nsl]) AC_SEARCH_LIBS([socket], [socket]) # check whether strptime also works AC_DEFUN([AC_CHECK_STRPTIME_WORKS], [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING(whether strptime works) if test c${cross_compiling} = cno; then AC_RUN_IFELSE([AC_LANG_SOURCE([[ #define _XOPEN_SOURCE 600 #include int main(void) { struct tm tm; char *res; res = strptime("2010-07-15T00:00:00+00:00", "%t%Y%t-%t%m%t-%t%d%tT%t%H%t:%t%M%t:%t%S%t", &tm); if (!res) return 2; res = strptime("20070207111842", "%Y%m%d%H%M%S", &tm); if (!res) return 1; return 0; } ]])] , [eval "ac_cv_c_strptime_works=yes"], [eval "ac_cv_c_strptime_works=no"], [eval "ac_cv_c_strptime_works=maybe"]) else eval "ac_cv_c_strptime_works=maybe" fi AC_MSG_RESULT($ac_cv_c_strptime_works) if test $ac_cv_c_strptime_works = no; then AC_LIBOBJ(strptime) else AC_DEFINE_UNQUOTED([STRPTIME_WORKS], 1, [use default strptime.]) fi ])dnl # check some functions of the OS before linking libs (while still runnable). AC_FUNC_CHOWN AC_FUNC_FORK AC_DEFINE(RETSIGTYPE,void,[Return type of signal handlers, but autoconf 2.70 says 'your code may safely assume C89 semantics that RETSIGTYPE is void.']) AC_FUNC_FSEEKO ACX_SYS_LARGEFILE ACX_CHECK_NONBLOCKING_BROKEN ACX_MKDIR_ONE_ARG AC_CHECK_FUNCS([strptime],[AC_CHECK_STRPTIME_WORKS],[AC_LIBOBJ([strptime])]) # check if we can use SO_REUSEPORT reuseport_default=0 if echo "$host" | $GREP -i -e linux >/dev/null; then reuseport_default=1; fi if echo "$host" | $GREP -i -e dragonfly >/dev/null; then reuseport_default=1; fi if test "$reuseport_default" = 1; then AC_DEFINE(REUSEPORT_DEFAULT, 1, [if REUSEPORT is enabled by default]) else AC_DEFINE(REUSEPORT_DEFAULT, 0, [if REUSEPORT is enabled by default]) fi # Include systemd.m4 - begin sinclude(systemd.m4) # Include systemd.m4 - end # set memory allocation checking if requested AC_ARG_ENABLE(alloc-checks, AS_HELP_STRING([--enable-alloc-checks],[ enable to memory allocation statistics, for debug purposes ]), , ) AC_ARG_ENABLE(alloc-lite, AS_HELP_STRING([--enable-alloc-lite],[ enable for lightweight alloc assertions, for debug purposes ]), , ) AC_ARG_ENABLE(alloc-nonregional, AS_HELP_STRING([--enable-alloc-nonregional],[ enable nonregional allocs, slow but exposes regional allocations to other memory purifiers, for debug purposes ]), , ) if test x_$enable_alloc_nonregional = x_yes; then AC_DEFINE(UNBOUND_ALLOC_NONREGIONAL, 1, [use malloc not regions, for debug use]) fi if test x_$enable_alloc_checks = x_yes; then AC_DEFINE(UNBOUND_ALLOC_STATS, 1, [use statistics for allocs and frees, for debug use]) SLDNS_ALLOCCHECK_EXTRA_OBJ="alloc.lo log.lo" AC_SUBST(SLDNS_ALLOCCHECK_EXTRA_OBJ) ASYNCLOOK_ALLOCCHECK_EXTRA_OBJ="alloc.lo" AC_SUBST(ASYNCLOOK_ALLOCCHECK_EXTRA_OBJ) else if test x_$enable_alloc_lite = x_yes; then AC_DEFINE(UNBOUND_ALLOC_LITE, 1, [use to enable lightweight alloc assertions, for debug use]) else ACX_FUNC_MALLOC([unbound]) fi fi # check windows threads (we use them, not pthreads, on windows). if test "$on_mingw" = "yes"; then # check windows threads AC_CHECK_HEADERS([windows.h],,, [AC_INCLUDES_DEFAULT]) AC_MSG_CHECKING([for CreateThread]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ #ifdef HAVE_WINDOWS_H #include #endif ], [ HANDLE t = CreateThread(NULL, 0, NULL, NULL, 0, NULL); ])], AC_MSG_RESULT(yes) AC_DEFINE(HAVE_WINDOWS_THREADS, 1, [Using Windows threads]) , AC_MSG_RESULT(no) ) else # not on mingw, check thread libraries. # check for thread library. # check this first, so that the pthread lib does not get linked in via # libssl or libpython, and thus distorts the tests, and we end up using # the non-threadsafe C libraries. AC_ARG_WITH(pthreads, AS_HELP_STRING([--with-pthreads],[use pthreads library, or --without-pthreads to disable threading support.]), [ ],[ withval="yes" ]) ub_have_pthreads=no if test x_$withval != x_no; then AX_PTHREAD([ AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]) if test -n "$PTHREAD_LIBS"; then LIBS="$PTHREAD_LIBS $LIBS" fi CFLAGS="$CFLAGS $PTHREAD_CFLAGS" CC="$PTHREAD_CC" ub_have_pthreads=yes AC_CHECK_TYPES([pthread_spinlock_t, pthread_rwlock_t],,,[#include ]) AC_CHECK_SIZEOF([unsigned long]) AC_CHECK_SIZEOF(pthread_t) if echo "$CFLAGS" | $GREP -e "-pthread" >/dev/null; then AC_MSG_CHECKING([if -pthread unused during linking]) # catch clang warning 'argument unused during compilation' AC_LANG_CONFTEST([AC_LANG_SOURCE(AC_INCLUDES_DEFAULT [[ int main(void) {return 0;} ]])]) pthread_unused="yes" # first compile echo "$CC $CFLAGS -c conftest.c -o conftest.o" >&AS_MESSAGE_LOG_FD $CC $CFLAGS -c conftest.c -o conftest.o 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD if test $? = 0; then # then link echo "$CC $CFLAGS -Werror $LDFLAGS $LIBS -o conftest contest.o" >&AS_MESSAGE_LOG_FD $CC $CFLAGS -Werror $LDFLAGS $LIBS -o conftest conftest.o 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD if test $? -ne 0; then AC_MSG_RESULT(yes) CFLAGS=`echo "$CFLAGS" | sed -e 's/-pthread//'` PTHREAD_CFLAGS_ONLY="-pthread" AC_SUBST(PTHREAD_CFLAGS_ONLY) else AC_MSG_RESULT(no) fi else AC_MSG_RESULT(no) fi # endif cc successful rm -f conftest conftest.c conftest.o fi # endif -pthread in CFLAGS ]) fi # check solaris thread library AC_ARG_WITH(solaris-threads, AS_HELP_STRING([--with-solaris-threads],[use solaris native thread library.]), [ ],[ withval="no" ]) ub_have_sol_threads=no if test x_$withval != x_no; then if test x_$ub_have_pthreads != x_no; then AC_MSG_WARN([Have pthreads already, ignoring --with-solaris-threads]) else AC_SEARCH_LIBS(thr_create, [thread], [ AC_DEFINE(HAVE_SOLARIS_THREADS, 1, [Using Solaris threads]) ACX_CHECK_COMPILER_FLAG(mt, [CFLAGS="$CFLAGS -mt"], [CFLAGS="$CFLAGS -D_REENTRANT"]) ub_have_sol_threads=yes ] , [ AC_MSG_ERROR([no solaris threads found.]) ]) fi fi fi # end of non-mingw check of thread libraries # Check for SYSLOG_FACILITY AC_ARG_WITH(syslog-facility, AS_HELP_STRING([--with-syslog-facility=LOCAL0 - LOCAL7],[ set SYSLOG_FACILITY, default DAEMON ]), [ UNBOUND_SYSLOG_FACILITY="$withval" ], []) case "${UNBOUND_SYSLOG_FACILITY}" in LOCAL[[0-7]]) UNBOUND_SYSLOG_FACILITY="LOG_${UNBOUND_SYSLOG_FACILITY}" ;; *) UNBOUND_SYSLOG_FACILITY="LOG_DAEMON" ;; esac AC_DEFINE_UNQUOTED(UB_SYSLOG_FACILITY,${UNBOUND_SYSLOG_FACILITY},[the SYSLOG_FACILITY to use, default LOG_DAEMON]) # Check for dynamic library module AC_ARG_WITH(dynlibmodule, AS_HELP_STRING([--with-dynlibmodule],[build dynamic library module, or --without-dynlibmodule to disable it. (default=no)]), [], [ withval="no" ]) if test x_$withval != x_no; then AC_DEFINE(WITH_DYNLIBMODULE, 1, [Define if you want dynlib module.]) WITH_DYNLIBMODULE=yes AC_SUBST(WITH_DYNLIBMODULE) DYNLIBMOD_OBJ="dynlibmod.lo" AC_SUBST(DYNLIBMOD_OBJ) DYNLIBMOD_HEADER='$(srcdir)/dynlibmod/dynlibmod.h' AC_SUBST(DYNLIBMOD_HEADER) if test $on_mingw = "no"; then # link with -ldl if not already there, for all executables because # dlopen call is in the dynlib module. For unbound executable, also # export symbols. AC_SEARCH_LIBS([dlopen], [dl]) DYNLIBMOD_EXTRALIBS="-export-dynamic" else DYNLIBMOD_EXTRALIBS="-Wl,--export-all-symbols,--out-implib,libunbound.dll.a" fi AC_SUBST(DYNLIBMOD_EXTRALIBS) fi # Check for PyUnbound AC_ARG_WITH(pyunbound, AS_HELP_STRING([--with-pyunbound],[build PyUnbound, or --without-pyunbound to skip it. (default=no)]), [], [ withval="no" ]) ub_test_python=no ub_with_pyunbound=no if test x_$withval != x_no; then ub_with_pyunbound=yes ub_test_python=yes fi # Check for Python module AC_ARG_WITH(pythonmodule, AS_HELP_STRING([--with-pythonmodule],[build Python module, or --without-pythonmodule to disable script engine. (default=no)]), [], [ withval="no" ]) ub_with_pythonmod=no if test x_$withval != x_no; then ub_with_pythonmod=yes ub_test_python=yes fi # Check for Python & SWIG only on PyUnbound or PyModule if test x_$ub_test_python != x_no; then # Check for Python ub_have_python=no ac_save_LIBS="$LIBS" dnl otherwise AC_PYTHON_DEVEL thrashes $LIBS AC_PYTHON_DEVEL if test ! -z "$PYTHON_VERSION"; then badversion="no" if test "$PYTHON_VERSION_MAJOR" -lt 2; then badversion="yes" fi if test "$PYTHON_VERSION_MAJOR" -eq 2 -a "$PYTHON_VERSION_MINOR" -lt 4; then badversion="yes" fi if test "$badversion" = "yes"; then AC_MSG_ERROR([Python version >= 2.4.0 is required]) fi [PY_MAJOR_VERSION="`$PYTHON -c \"import sys; print(sys.version_info[0])\"`"] AC_SUBST(PY_MAJOR_VERSION) # Have Python AC_DEFINE(HAVE_PYTHON,1,[Define if you have Python libraries and header files.]) if test x_$ub_with_pythonmod != x_no; then if test -n "$LIBS"; then LIBS="$PYTHON_LDFLAGS $LIBS" else LIBS="$PYTHON_LDFLAGS" fi fi PYTHON_LIBS="$PYTHON_LDFLAGS" AC_SUBST(PYTHON_LIBS) if test -n "$CPPFLAGS"; then CPPFLAGS="$CPPFLAGS $PYTHON_CPPFLAGS" else CPPFLAGS="$PYTHON_CPPFLAGS" fi if test "$PYTHON_LIBDIR" != "/usr/lib" -a "$PYTHON_LIBDIR" != "" -a "$PYTHON_LIBDIR" != "/usr/lib64"; then ACX_RUNTIME_PATH_ADD([$PYTHON_LIBDIR]) fi ub_have_python=yes PKG_CHECK_EXISTS(["python${PY_MAJOR_VERSION}"], [PC_PY_DEPENDENCY="python${PY_MAJOR_VERSION}"], [PC_PY_DEPENDENCY="python"]) AC_SUBST(PC_PY_DEPENDENCY) # Check for SWIG ub_have_swig=no AC_ARG_ENABLE(swig-version-check, AS_HELP_STRING([--disable-swig-version-check],[Disable swig version check to build python modules with older swig even though that is unreliable])) if test "$enable_swig_version_check" = "yes"; then AX_PKG_SWIG(2.0.1) else AX_PKG_SWIG fi AC_MSG_CHECKING(SWIG) if test ! -x "$SWIG"; then AC_MSG_ERROR([failed to find swig tool, install it, or do not build Python module and PyUnbound]) else AC_DEFINE(HAVE_SWIG, 1, [Define if you have Swig libraries and header files.]) AC_SUBST(swig, "$SWIG") AC_MSG_RESULT(present) # If have Python & SWIG # Declare PythonMod if test x_$ub_with_pythonmod != x_no; then AC_DEFINE(WITH_PYTHONMODULE, 1, [Define if you want Python module.]) WITH_PYTHONMODULE=yes AC_SUBST(WITH_PYTHONMODULE) PYTHONMOD_OBJ="pythonmod.lo pythonmod_utils.lo" AC_SUBST(PYTHONMOD_OBJ) PYTHONMOD_HEADER='$(srcdir)/pythonmod/pythonmod.h' AC_SUBST(PYTHONMOD_HEADER) PYTHONMOD_INSTALL=pythonmod-install AC_SUBST(PYTHONMOD_INSTALL) PYTHONMOD_UNINSTALL=pythonmod-uninstall AC_SUBST(PYTHONMOD_UNINSTALL) fi # Declare PyUnbound if test x_$ub_with_pyunbound != x_no; then AC_DEFINE(WITH_PYUNBOUND, 1, [Define if you want PyUnbound.]) WITH_PYUNBOUND=yes AC_SUBST(WITH_PYUNBOUND) PYUNBOUND_OBJ="libunbound_wrap.lo" AC_SUBST(PYUNBOUND_OBJ) PYUNBOUND_TARGET="_unbound.la" AC_SUBST(PYUNBOUND_TARGET) PYUNBOUND_INSTALL=pyunbound-install AC_SUBST(PYUNBOUND_INSTALL) PYUNBOUND_UNINSTALL=pyunbound-uninstall AC_SUBST(PYUNBOUND_UNINSTALL) fi fi else AC_MSG_RESULT([*** Python libraries not found, won't build PythonMod or PyUnbound ***]) ub_with_pyunbound=no ub_with_pythonmod=no fi fi if test "`uname`" = "NetBSD"; then NETBSD_LINTFLAGS='"-D__RENAME(x)=" -D_NETINET_IN_H_' AC_SUBST(NETBSD_LINTFLAGS) fi if test "`uname`" = "Linux"; then # splint cannot parse modern c99 header files GCC_DOCKER_LINTFLAGS='-syntax' AC_SUBST(GCC_DOCKER_LINTFLAGS) fi CONFIG_DATE=`date +%Y%m%d` AC_SUBST(CONFIG_DATE) # Checks for libraries. # libnss USE_NSS="no" AC_ARG_WITH([nss], AS_HELP_STRING([--with-nss=path],[use libnss instead of openssl, installed at path.]), [ USE_NSS="yes" AC_DEFINE(HAVE_NSS, 1, [Use libnss for crypto]) if test "$withval" != "" -a "$withval" != "yes"; then CPPFLAGS="$CPPFLAGS -I$withval/include/nss3" LDFLAGS="$LDFLAGS -L$withval/lib" ACX_RUNTIME_PATH_ADD([$withval/lib]) CPPFLAGS="-I$withval/include/nspr4 $CPPFLAGS" else CPPFLAGS="$CPPFLAGS -I/usr/include/nss3" CPPFLAGS="-I/usr/include/nspr4 $CPPFLAGS" fi LIBS="$LIBS -lnss3 -lnspr4" SSLLIB="" PC_CRYPTO_DEPENDENCY="nss nspr" AC_SUBST(PC_CRYPTO_DEPENDENCY) ] ) # libnettle USE_NETTLE="no" AC_ARG_WITH([nettle], AS_HELP_STRING([--with-nettle=path],[use libnettle as crypto library, installed at path.]), [ USE_NETTLE="yes" AC_DEFINE(HAVE_NETTLE, 1, [Use libnettle for crypto]) AC_CHECK_HEADERS([nettle/dsa-compat.h],,, [AC_INCLUDES_DEFAULT]) if test "$withval" != "" -a "$withval" != "yes"; then CPPFLAGS="$CPPFLAGS -I$withval/include/nettle" LDFLAGS="$LDFLAGS -L$withval/lib" ACX_RUNTIME_PATH_ADD([$withval/lib]) else CPPFLAGS="$CPPFLAGS -I/usr/include/nettle" fi LIBS="$LIBS -lhogweed -lnettle -lgmp" SSLLIB="" PC_CRYPTO_DEPENDENCY="hogweed nettle" AC_SUBST(PC_CRYPTO_DEPENDENCY) ] ) # openssl if test $USE_NSS = "no" -a $USE_NETTLE = "no"; then ACX_WITH_SSL ACX_LIB_SSL SSLLIB="-lssl" PC_CRYPTO_DEPENDENCY="" AC_SUBST(PC_CRYPTO_DEPENDENCY) # check if -lcrypt32 is needed because CAPIENG needs that. (on windows) BAKLIBS="$LIBS" LIBS="-lssl $LIBS" AC_MSG_CHECKING([if libssl needs -lcrypt32]) AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[ int EVP_sha256(void); (void)EVP_sha256(); ]])], [ AC_MSG_RESULT([no]) LIBS="$BAKLIBS" ], [ AC_MSG_RESULT([yes]) LIBS="$BAKLIBS" LIBS="$LIBS -lcrypt32" ]) AC_MSG_CHECKING([for LibreSSL]) if grep VERSION_TEXT $ssldir_include/openssl/opensslv.h | grep "LibreSSL" >/dev/null; then AC_MSG_RESULT([yes]) AC_DEFINE([HAVE_LIBRESSL], [1], [Define if we have LibreSSL]) # libressl provides these compat functions, but they may also be # declared by the OS in libc. See if they have been declared. AC_CHECK_DECLS([strlcpy,strlcat,arc4random,arc4random_uniform]) else AC_MSG_RESULT([no]) fi AC_CHECK_HEADERS([openssl/conf.h openssl/engine.h openssl/bn.h openssl/dh.h openssl/dsa.h openssl/rsa.h openssl/core_names.h openssl/param_build.h],,, [AC_INCLUDES_DEFAULT]) AC_CHECK_FUNCS([OPENSSL_config EVP_sha1 EVP_sha256 EVP_sha512 FIPS_mode EVP_default_properties_is_fips_enabled EVP_MD_CTX_new OpenSSL_add_all_digests OPENSSL_init_crypto EVP_cleanup ENGINE_cleanup ERR_load_crypto_strings CRYPTO_cleanup_all_ex_data ERR_free_strings RAND_cleanup DSA_SIG_set0 EVP_dss1 EVP_DigestVerify EVP_aes_256_cbc EVP_EncryptInit_ex HMAC_Init_ex CRYPTO_THREADID_set_callback EVP_MAC_CTX_set_params OSSL_PARAM_BLD_new BIO_set_callback_ex SSL_CTX_set_tmp_ecdh]) # these check_funcs need -lssl BAKLIBS="$LIBS" LIBS="-lssl $LIBS" AC_CHECK_FUNCS([OPENSSL_init_ssl SSL_CTX_set_security_level SSL_set1_host SSL_get0_peername X509_VERIFY_PARAM_set1_host SSL_CTX_set_ciphersuites SSL_CTX_set_tlsext_ticket_key_evp_cb SSL_CTX_set_alpn_select_cb SSL_get0_alpn_selected SSL_CTX_set_alpn_protos SSL_get1_peer_certificate]) LIBS="$BAKLIBS" AC_CHECK_DECLS([SSL_COMP_get_compression_methods,sk_SSL_COMP_pop_free,SSL_CTX_set_ecdh_auto], [], [], [ AC_INCLUDES_DEFAULT #ifdef HAVE_OPENSSL_ERR_H #include #endif #ifdef HAVE_OPENSSL_RAND_H #include #endif #ifdef HAVE_OPENSSL_CONF_H #include #endif #ifdef HAVE_OPENSSL_ENGINE_H #include #endif #include #include ]) if test "$ac_cv_func_HMAC_Init_ex" = "yes"; then # check function return type. AC_MSG_CHECKING(the return type of HMAC_Init_ex) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ #ifdef HAVE_OPENSSL_ERR_H #include #endif #ifdef HAVE_OPENSSL_RAND_H #include #endif #ifdef HAVE_OPENSSL_CONF_H #include #endif #ifdef HAVE_OPENSSL_ENGINE_H #include #endif #include #include ], [ HMAC_CTX* hmac_ctx = NULL; void* hmac_key = NULL; const EVP_MD* digest = NULL; int x = HMAC_Init_ex(hmac_ctx, hmac_key, 32, digest, NULL); (void)x; ])], [ AC_MSG_RESULT(int) ], [ AC_MSG_RESULT(void) AC_DEFINE([HMAC_INIT_EX_RETURNS_VOID], 1, [If HMAC_Init_ex() returns void]) ]) fi fi AC_SUBST(SSLLIB) # libbsd AC_ARG_WITH([libbsd], AS_HELP_STRING([--with-libbsd],[Use portable libbsd functions]), [ AC_CHECK_HEADERS([bsd/string.h bsd/stdlib.h],,, [AC_INCLUDES_DEFAULT]) if test "x$ac_cv_header_bsd_string_h" = xyes -a "x$ac_cv_header_bsd_stdlib_h" = xyes; then for func in strlcpy strlcat arc4random arc4random_uniform reallocarray; do AC_SEARCH_LIBS([$func], [bsd], [ AC_DEFINE(HAVE_LIBBSD, 1, [Use portable libbsd functions]) PC_LIBBSD_DEPENDENCY=libbsd AC_SUBST(PC_LIBBSD_DEPENDENCY) ]) done fi ]) AC_ARG_ENABLE(sha1, AS_HELP_STRING([--disable-sha1],[Disable SHA1 RRSIG support, does not disable nsec3 support])) case "$enable_sha1" in no) ;; yes|*) AC_DEFINE([USE_SHA1], [1], [Define this to enable SHA1 support.]) ;; esac AC_ARG_ENABLE(sha2, AS_HELP_STRING([--disable-sha2],[Disable SHA256 and SHA512 RRSIG support])) case "$enable_sha2" in no) ;; yes|*) AC_DEFINE([USE_SHA2], [1], [Define this to enable SHA256 and SHA512 support.]) ;; esac AC_ARG_ENABLE(subnet, AS_HELP_STRING([--enable-subnet],[Enable client subnet])) case "$enable_subnet" in yes) AC_DEFINE([CLIENT_SUBNET], [1], [Define this to enable client subnet option.]) SUBNET_OBJ="edns-subnet.lo subnetmod.lo addrtree.lo subnet-whitelist.lo" AC_SUBST(SUBNET_OBJ) SUBNET_HEADER='$(srcdir)/edns-subnet/subnetmod.h $(srcdir)/edns-subnet/edns-subnet.h $(srcdir)/edns-subnet/subnet-whitelist.h $(srcdir)/edns-subnet/addrtree.h' AC_SUBST(SUBNET_HEADER) ;; no|*) ;; esac # check whether gost also works AC_DEFUN([AC_CHECK_GOST_WORKS], [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([if GOST works]) if test c${cross_compiling} = cno; then BAKCFLAGS="$CFLAGS" if test -n "$ssldir"; then CFLAGS="$CFLAGS -Wl,-rpath,$ssldir_lib" fi AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #include #include /* routine to load gost (from sldns) */ int load_gost_id(void) { static int gost_id = 0; const EVP_PKEY_ASN1_METHOD* meth; ENGINE* e; if(gost_id) return gost_id; /* see if configuration loaded gost implementation from other engine*/ meth = EVP_PKEY_asn1_find_str(NULL, "gost2001", -1); if(meth) { EVP_PKEY_asn1_get0_info(&gost_id, NULL, NULL, NULL, NULL, meth); return gost_id; } /* see if engine can be loaded already */ e = ENGINE_by_id("gost"); if(!e) { /* load it ourself, in case statically linked */ ENGINE_load_builtin_engines(); ENGINE_load_dynamic(); e = ENGINE_by_id("gost"); } if(!e) { /* no gost engine in openssl */ return 0; } if(!ENGINE_set_default(e, ENGINE_METHOD_ALL)) { ENGINE_finish(e); ENGINE_free(e); return 0; } meth = EVP_PKEY_asn1_find_str(&e, "gost2001", -1); if(!meth) { /* algo not found */ ENGINE_finish(e); ENGINE_free(e); return 0; } EVP_PKEY_asn1_get0_info(&gost_id, NULL, NULL, NULL, NULL, meth); return gost_id; } int main(void) { EVP_MD_CTX* ctx; const EVP_MD* md; unsigned char digest[64]; /* its a 256-bit digest, so uses 32 bytes */ const char* str = "Hello world"; const unsigned char check[] = { 0x40 , 0xed , 0xf8 , 0x56 , 0x5a , 0xc5 , 0x36 , 0xe1 , 0x33 , 0x7c , 0x7e , 0x87 , 0x62 , 0x1c , 0x42 , 0xe0 , 0x17 , 0x1b , 0x5e , 0xce , 0xa8 , 0x46 , 0x65 , 0x4d , 0x8d , 0x3e , 0x22 , 0x9b , 0xe1 , 0x30 , 0x19 , 0x9d }; OPENSSL_config(NULL); (void)load_gost_id(); md = EVP_get_digestbyname("md_gost94"); if(!md) return 1; memset(digest, 0, sizeof(digest)); ctx = EVP_MD_CTX_create(); if(!ctx) return 2; if(!EVP_DigestInit_ex(ctx, md, NULL)) return 3; if(!EVP_DigestUpdate(ctx, str, 10)) return 4; if(!EVP_DigestFinal_ex(ctx, digest, NULL)) return 5; /* uncomment to see the hash calculated. {int i; for(i=0; i<32; i++) printf(" %2.2x", (int)digest[i]); printf("\n");} */ if(memcmp(digest, check, sizeof(check)) != 0) return 6; return 0; } ]])] , [eval "ac_cv_c_gost_works=yes"], [eval "ac_cv_c_gost_works=no"], [eval "ac_cv_c_gost_works=maybe"]) CFLAGS="$BAKCFLAGS" else eval "ac_cv_c_gost_works=maybe" fi AC_MSG_RESULT($ac_cv_c_gost_works) ])dnl AC_ARG_ENABLE(gost, AS_HELP_STRING([--disable-gost],[Disable GOST support])) use_gost="no" if test $USE_NSS = "no" -a $USE_NETTLE = "no"; then case "$enable_gost" in no) ;; *) AC_CHECK_FUNC(EVP_PKEY_set_type_str, [:],[AC_MSG_ERROR([OpenSSL 1.0.0 is needed for GOST support])]) AC_CHECK_FUNC(EC_KEY_new, [], [AC_MSG_ERROR([OpenSSL does not support ECC, needed for GOST support])]) AC_CHECK_GOST_WORKS if test "$ac_cv_c_gost_works" != no; then use_gost="yes" AC_DEFINE([USE_GOST], [1], [Define this to enable GOST support.]) fi ;; esac fi dnl !USE_NSS && !USE_NETTLE AC_ARG_ENABLE(ecdsa, AS_HELP_STRING([--disable-ecdsa],[Disable ECDSA support])) use_ecdsa="no" case "$enable_ecdsa" in no) ;; *) if test $USE_NSS = "no" -a $USE_NETTLE = "no"; then AC_CHECK_FUNC(EVP_PKEY_fromdata, [ # with EVP_PKEY_fromdata, check if EC is not disabled AC_CHECK_DECL([OPENSSL_NO_EC], [AC_MSG_ERROR([OpenSSL does not support ECDSA: please upgrade or rerun with --disable-ecdsa]) ], [], [AC_INCLUDES_DEFAULT #include ]) ], [ # without EVP_PKEY_fromdata, older openssl, check for support AC_CHECK_FUNC(ECDSA_sign, [], [AC_MSG_ERROR([OpenSSL does not support ECDSA: please upgrade or rerun with --disable-ecdsa])]) AC_CHECK_FUNC(SHA384_Init, [], [AC_MSG_ERROR([OpenSSL does not support SHA384: please upgrade or rerun with --disable-ecdsa])]) ]) AC_CHECK_DECLS([NID_X9_62_prime256v1, NID_secp384r1], [], [AC_MSG_ERROR([OpenSSL does not support the ECDSA curves: please upgrade or rerun with --disable-ecdsa])], [AC_INCLUDES_DEFAULT #include ]) # see if OPENSSL 1.0.0 or later (has EVP MD and Verify independency) AC_MSG_CHECKING([if openssl supports SHA2 and ECDSA with EVP]) if grep OPENSSL_VERSION_TEXT $ssldir_include/openssl/opensslv.h | grep "OpenSSL" >/dev/null; then if grep OPENSSL_VERSION_NUMBER $ssldir_include/openssl/opensslv.h | grep 0x0 >/dev/null; then AC_MSG_RESULT([no]) AC_DEFINE_UNQUOTED([USE_ECDSA_EVP_WORKAROUND], [1], [Define this to enable an EVP workaround for older openssl]) else AC_MSG_RESULT([yes]) fi else # not OpenSSL, thus likely LibreSSL, which supports it AC_MSG_RESULT([yes]) fi fi # we now know we have ECDSA and the required curves. AC_DEFINE_UNQUOTED([USE_ECDSA], [1], [Define this to enable ECDSA support.]) use_ecdsa="yes" ;; esac AC_ARG_ENABLE(dsa, AS_HELP_STRING([--disable-dsa],[Disable DSA support])) use_dsa="no" case "$enable_dsa" in yes) # detect if DSA is supported, and turn it off if not. if test $USE_NSS = "no" -a $USE_NETTLE = "no"; then AC_CHECK_FUNC(DSA_SIG_new, [ AC_CHECK_TYPE(DSA_SIG*, [ AC_DEFINE_UNQUOTED([USE_DSA], [1], [Define this to enable DSA support.]) ], [if test "x$enable_dsa" = "xyes"; then AC_MSG_ERROR([OpenSSL does not support DSA and you used --enable-dsa.]) fi ], [ AC_INCLUDES_DEFAULT #ifdef HAVE_OPENSSL_ERR_H #include #endif #ifdef HAVE_OPENSSL_RAND_H #include #endif #ifdef HAVE_OPENSSL_CONF_H #include #endif #ifdef HAVE_OPENSSL_ENGINE_H #include #endif ]) ], [if test "x$enable_dsa" = "xyes"; then AC_MSG_ERROR([OpenSSL does not support DSA and you used --enable-dsa.]) fi ]) else AC_DEFINE_UNQUOTED([USE_DSA], [1], [Define this to enable DSA support.]) fi ;; *) # disable dsa by default, RFC 8624 section 3.1, validators MUST NOT # support DSA for DNSSEC Validation. ;; esac AC_ARG_WITH(deprecate-rsa-1024, AS_HELP_STRING([--with-deprecate-rsa-1024],[Deprecate RSA 1024 bit length, makes that an unsupported key, for use when OpenSSL FIPS refuses 1024 bit verification])) if test "$with_deprecate_rsa_1024" = "yes"; then AC_DEFINE([DEPRECATE_RSA_1024], [1], [Deprecate RSA 1024 bit length, makes that an unsupported key]) fi AC_ARG_ENABLE(ed25519, AS_HELP_STRING([--disable-ed25519],[Disable ED25519 support])) use_ed25519="no" case "$enable_ed25519" in no) ;; *) if test $USE_NSS = "no" -a $USE_NETTLE = "no"; then AC_CHECK_DECLS([NID_ED25519], [ use_ed25519="yes" ], [ if test "x$enable_ed25519" = "xyes"; then AC_MSG_ERROR([OpenSSL does not support ED25519 and you used --enable-ed25519.]) fi ], [AC_INCLUDES_DEFAULT #include ]) fi if test $USE_NETTLE = "yes"; then AC_CHECK_HEADERS([nettle/eddsa.h], use_ed25519="yes",, [AC_INCLUDES_DEFAULT]) fi if test $use_ed25519 = "yes"; then AC_DEFINE_UNQUOTED([USE_ED25519], [1], [Define this to enable ED25519 support.]) fi ;; esac AC_ARG_ENABLE(ed448, AS_HELP_STRING([--disable-ed448],[Disable ED448 support])) use_ed448="no" case "$enable_ed448" in no) ;; *) if test $USE_NSS = "no" -a $USE_NETTLE = "no"; then AC_CHECK_DECLS([NID_ED448], [ use_ed448="yes" ], [ if test "x$enable_ed448" = "xyes"; then AC_MSG_ERROR([OpenSSL does not support ED448 and you used --enable-ed448.]) fi ], [AC_INCLUDES_DEFAULT #include ]) fi if test $use_ed448 = "yes"; then AC_DEFINE_UNQUOTED([USE_ED448], [1], [Define this to enable ED448 support.]) fi ;; esac AC_ARG_ENABLE(event-api, AS_HELP_STRING([--enable-event-api],[Enable (experimental) pluggable event base libunbound API installed to unbound-event.h])) case "$enable_event_api" in yes) AC_SUBST(UNBOUND_EVENT_INSTALL, [unbound-event-install]) AC_SUBST(UNBOUND_EVENT_UNINSTALL, [unbound-event-uninstall]) ;; *) ;; esac AC_ARG_ENABLE(tfo-client, AS_HELP_STRING([--enable-tfo-client],[Enable TCP Fast Open for client mode])) case "$enable_tfo_client" in yes) case "$host_os" in linux*) AC_CHECK_DECL([MSG_FASTOPEN], [AC_MSG_WARN([Check the platform specific TFO kernel parameters are correctly configured to support client mode TFO])], [AC_MSG_ERROR([TCP Fast Open is not available for client mode: please rerun without --enable-tfo-client])], [AC_INCLUDES_DEFAULT #include ]) AC_DEFINE_UNQUOTED([USE_MSG_FASTOPEN], [1], [Define this to enable client TCP Fast Open.]) ;; darwin*) AC_CHECK_DECL([CONNECT_RESUME_ON_READ_WRITE], [AC_MSG_WARN([Check the platform specific TFO kernel parameters are correctly configured to support client mode TFO])], [AC_MSG_ERROR([TCP Fast Open is not available for client mode: please rerun without --enable-tfo-client])], [AC_INCLUDES_DEFAULT #include ]) AC_DEFINE_UNQUOTED([USE_OSX_MSG_FASTOPEN], [1], [Define this to enable client TCP Fast Open.]) ;; esac ;; no|*) ;; esac AC_ARG_ENABLE(tfo-server, AS_HELP_STRING([--enable-tfo-server],[Enable TCP Fast Open for server mode])) case "$enable_tfo_server" in yes) AC_CHECK_DECL([TCP_FASTOPEN], [AC_MSG_WARN([Check the platform specific TFO kernel parameters are correctly configured to support server mode TFO])], [AC_MSG_ERROR([TCP Fast Open is not available for server mode: please rerun without --enable-tfo-server])], [AC_INCLUDES_DEFAULT #include ]) AC_DEFINE_UNQUOTED([USE_TCP_FASTOPEN], [1], [Define this to enable server TCP Fast Open.]) ;; no|*) ;; esac # check for libevent AC_ARG_WITH(libevent, AS_HELP_STRING([--with-libevent=pathname],[use libevent (will check /usr/local /opt/local /usr/lib /usr/pkg /usr/sfw /usr or you can specify an explicit path). Slower, but allows use of large outgoing port ranges.]), [ ],[ with_libevent="no" ]) if test "x_$with_libevent" != x_no; then AC_DEFINE([USE_LIBEVENT], [1], [Define if you enable libevent]) AC_MSG_CHECKING(for libevent) if test "x_$with_libevent" = x_ -o "x_$with_libevent" = x_yes; then with_libevent="/usr/local /opt/local /usr/lib /usr/pkg /usr/sfw /usr" fi for dir in $with_libevent; do thedir="$dir" if test -f "$dir/include/event.h" -o -f "$dir/include/event2/event.h"; then found_libevent="yes" dnl assume /usr is in default path. if test "$thedir" != "/usr"; then CPPFLAGS="$CPPFLAGS -I$thedir/include" fi break; fi done if test x_$found_libevent != x_yes; then if test -f "$dir/event.h" -a \( -f "$dir/libevent.la" -o -f "$dir/libev.la" \) ; then # libevent source directory AC_MSG_RESULT(found in $thedir) CPPFLAGS="$CPPFLAGS -I$thedir -I$thedir/include" BAK_LDFLAGS_SET="1" BAK_LDFLAGS="$LDFLAGS" # remove evdns from linking mkdir build >/dev/null 2>&1 mkdir build/libevent >/dev/null 2>&1 mkdir build/libevent/.libs >/dev/null 2>&1 ev_files_o=`ls $thedir/*.o | grep -v evdns\.o | grep -v bufferevent_openssl\.o` ev_files_lo=`ls $thedir/*.lo | grep -v evdns\.lo | grep -v bufferevent_openssl\.lo` ev_files_libso=`ls $thedir/.libs/*.o | grep -v evdns\.o | grep -v bufferevent_openssl\.o` cp $ev_files_o build/libevent cp $ev_files_lo build/libevent cp $ev_files_libso build/libevent/.libs LATE_LDFLAGS="build/libevent/*.lo -lm" LDFLAGS="build/libevent/*.o $LDFLAGS -lm" else AC_MSG_ERROR([Cannot find the libevent library in $with_libevent You can restart ./configure --with-libevent=no to use a builtin alternative. Please note that this alternative is not as capable as libevent when using large outgoing port ranges. ]) fi else AC_MSG_RESULT(found in $thedir) dnl if event2 exists and no event lib in dir itself, use subdir if test ! -f $thedir/lib/libevent.a -a ! -f $thedir/lib/libevent.so -a -d "$thedir/lib/event2"; then LDFLAGS="$LDFLAGS -L$thedir/lib/event2" ACX_RUNTIME_PATH_ADD([$thedir/lib/event2]) else dnl assume /usr is in default path, do not add "". if test "$thedir" != "/usr" -a "$thedir" != ""; then LDFLAGS="$LDFLAGS -L$thedir/lib" ACX_RUNTIME_PATH_ADD([$thedir/lib]) fi fi fi # check for library used by libevent after 1.3c AC_SEARCH_LIBS([clock_gettime], [rt]) # is the event.h header libev or libevent? AC_CHECK_HEADERS([event.h],,, [AC_INCLUDES_DEFAULT]) AC_CHECK_DECL(EV_VERSION_MAJOR, [ AC_SEARCH_LIBS(event_set, [ev]) ],[ AC_SEARCH_LIBS(event_set, [event]) ],[AC_INCLUDES_DEFAULT #include ]) AC_CHECK_FUNCS([event_base_free]) # only in libevent 1.2 and later AC_CHECK_FUNCS([event_base_once]) # only in libevent 1.4.1 and later AC_CHECK_FUNCS([event_base_new]) # only in libevent 1.4.1 and later AC_CHECK_FUNCS([event_base_get_method]) # only in libevent 1.4.3 and later AC_CHECK_FUNCS([ev_loop]) # only in libev. (tested on 3.51) AC_CHECK_FUNCS([ev_default_loop]) # only in libev. (tested on 4.00) AC_CHECK_FUNCS([event_assign]) # in libevent, for thread-safety AC_CHECK_DECLS([evsignal_assign], [], [], [AC_INCLUDES_DEFAULT #ifdef HAVE_EVENT_H # include #else # include "event2/event.h" #endif ]) PC_LIBEVENT_DEPENDENCY="libevent" AC_SUBST(PC_LIBEVENT_DEPENDENCY) if test -n "$BAK_LDFLAGS_SET"; then LDFLAGS="$BAK_LDFLAGS" fi else AC_DEFINE(USE_MINI_EVENT, 1, [Define if you want to use internal select based events]) fi # check for libexpat AC_ARG_WITH(libexpat, AS_HELP_STRING([--with-libexpat=path],[specify explicit path for libexpat.]), [ ],[ withval="/usr/local /opt/local /usr/lib /usr/pkg /usr/sfw /usr" ]) AC_MSG_CHECKING(for libexpat) found_libexpat="no" for dir in $withval ; do if test -f "$dir/include/expat.h"; then found_libexpat="yes" dnl assume /usr is in default path. if test "$dir" != "/usr"; then CPPFLAGS="$CPPFLAGS -I$dir/include" LDFLAGS="$LDFLAGS -L$dir/lib" fi AC_MSG_RESULT(found in $dir) break; fi done if test x_$found_libexpat != x_yes; then AC_MSG_ERROR([Could not find libexpat, expat.h]) fi AC_CHECK_HEADERS([expat.h],,, [AC_INCLUDES_DEFAULT]) AC_CHECK_DECLS([XML_StopParser], [], [], [AC_INCLUDES_DEFAULT #include ]) # hiredis (redis C client for cachedb) AC_ARG_WITH(libhiredis, AS_HELP_STRING([--with-libhiredis=path],[specify explicit path for libhiredis.]), [ ],[ withval="no" ]) found_libhiredis="no" if test x_$withval = x_yes -o x_$withval != x_no; then AC_MSG_CHECKING(for libhiredis) if test x_$withval = x_ -o x_$withval = x_yes; then withval="/usr/local /opt/local /usr/lib /usr/pkg /usr/sfw /usr" fi for dir in $withval ; do if test -f "$dir/include/hiredis/hiredis.h"; then found_libhiredis="yes" dnl assume /usr is in default path. if test "$dir" != "/usr"; then CPPFLAGS="$CPPFLAGS -I$dir/include" LDFLAGS="$LDFLAGS -L$dir/lib" fi AC_MSG_RESULT(found in $dir) AC_DEFINE([USE_REDIS], [1], [Define this to use hiredis client.]) LIBS="$LIBS -lhiredis" break; fi done if test x_$found_libhiredis != x_yes; then AC_MSG_ERROR([Could not find libhiredis, hiredis.h]) fi AC_CHECK_HEADERS([hiredis/hiredis.h],,, [AC_INCLUDES_DEFAULT]) AC_CHECK_DECLS([redisConnect], [], [], [AC_INCLUDES_DEFAULT #include ]) fi # nghttp2 AC_ARG_WITH(libnghttp2, AS_HELP_STRING([--with-libnghttp2=path],[specify explicit path for libnghttp2.]), [ ],[ withval="no" ]) found_libnghttp2="no" if test x_$withval = x_yes -o x_$withval != x_no; then AC_MSG_CHECKING(for libnghttp2) if test x_$withval = x_ -o x_$withval = x_yes; then withval="/usr/local /opt/local /usr/lib /usr/pkg /usr/sfw /usr" fi for dir in $withval ; do if test -f "$dir/include/nghttp2/nghttp2.h"; then found_libnghttp2="yes" dnl assume /usr is in default path. if test "$dir" != "/usr"; then CPPFLAGS="$CPPFLAGS -I$dir/include" LDFLAGS="$LDFLAGS -L$dir/lib" fi AC_MSG_RESULT(found in $dir) AC_DEFINE([HAVE_NGHTTP2], [1], [Define this to use nghttp2 client.]) LIBS="$LIBS -lnghttp2" break; fi done if test x_$found_libnghttp2 != x_yes; then AC_MSG_ERROR([Could not find libnghttp2, nghttp2.h]) fi AC_CHECK_HEADERS([nghttp2/nghttp2.h],,, [AC_INCLUDES_DEFAULT]) AC_CHECK_DECLS([nghttp2_session_server_new], [], [], [AC_INCLUDES_DEFAULT #include ]) fi # set static linking for uninstalled libraries if requested AC_SUBST(staticexe) staticexe="" AC_ARG_ENABLE(static-exe, AS_HELP_STRING([--enable-static-exe],[ enable to compile executables statically against (event) uninstalled libs, for debug purposes ]), , ) if test x_$enable_static_exe = x_yes; then staticexe="-static" if test "$on_mingw" = yes; then staticexe="-all-static" # for static compile, include gdi32 and zlib here. if echo "$LIBS" | grep 'lgdi32' >/dev/null; then : else LIBS="$LIBS -lgdi32" fi AC_CHECK_LIB([z], [compress], [ LIBS="$LIBS -lz" ]) if echo "$LIBS" | grep -e "libssp.a" -e "lssp" >/dev/null; then : else LIBS="$LIBS -l:libssp.a" fi fi fi # set full static linking if requested AC_ARG_ENABLE(fully-static, AS_HELP_STRING([--enable-fully-static],[ enable to compile fully static ]), , ) if test x_$enable_fully_static = x_yes; then staticexe="-all-static" if test "$on_mingw" = yes; then # for static compile, include gdi32 and zlib here. if echo $LIBS | grep 'lgdi32' >/dev/null; then : else LIBS="$LIBS -lgdi32" fi AC_CHECK_LIB([z], [compress], [ LIBS="$LIBS -lz" ]) if echo "$LIBS" | grep -e "libssp.a" -e "lssp" >/dev/null; then : else LIBS="$LIBS -l:libssp.a" fi fi fi # set lock checking if requested AC_ARG_ENABLE(lock_checks, AS_HELP_STRING([--enable-lock-checks],[ enable to check lock and unlock calls, for debug purposes ]), , ) if test x_$enable_lock_checks = x_yes; then AC_DEFINE(ENABLE_LOCK_CHECKS, 1, [Define if you want to use debug lock checking (slow).]) CHECKLOCK_OBJ="checklocks.lo" AC_SUBST(CHECKLOCK_OBJ) fi ACX_CHECK_GETADDRINFO_WITH_INCLUDES if test "$USE_WINSOCK" = 1; then AC_DEFINE(UB_ON_WINDOWS, 1, [Use win32 resources and API]) AC_CHECK_HEADERS([iphlpapi.h],,, [AC_INCLUDES_DEFAULT #include ]) AC_CHECK_TOOL(WINDRES, windres) if echo "$LIBS" | grep crypt32 >/dev/null; then LIBS="$LIBS -liphlpapi" else LIBS="$LIBS -liphlpapi -lcrypt32" fi WINAPPS="unbound-service-install.exe unbound-service-remove.exe anchor-update.exe" AC_SUBST(WINAPPS) WIN_DAEMON_SRC="winrc/win_svc.c winrc/w_inst.c" AC_SUBST(WIN_DAEMON_SRC) WIN_DAEMON_OBJ="win_svc.lo w_inst.lo" AC_SUBST(WIN_DAEMON_OBJ) WIN_DAEMON_OBJ_LINK="rsrc_unbound.o" AC_SUBST(WIN_DAEMON_OBJ_LINK) WIN_HOST_OBJ_LINK="rsrc_unbound_host.o" AC_SUBST(WIN_HOST_OBJ_LINK) WIN_UBANCHOR_OBJ_LINK="rsrc_unbound_anchor.o log.lo locks.lo" AC_SUBST(WIN_UBANCHOR_OBJ_LINK) WIN_CONTROL_OBJ_LINK="rsrc_unbound_control.o" AC_SUBST(WIN_CONTROL_OBJ_LINK) WIN_CHECKCONF_OBJ_LINK="rsrc_unbound_checkconf.o" AC_SUBST(WIN_CHECKCONF_OBJ_LINK) AC_DEFINE(__USE_MINGW_ANSI_STDIO, 1, [defined to use gcc ansi snprintf and sscanf that understands %lld when compiled for windows.]) fi if test $ac_cv_func_getaddrinfo = no; then AC_LIBOBJ([fake-rfc2553]) fi # check after getaddrinfo for its libraries ACX_FUNC_IOCTLSOCKET # see if daemon(3) exists, and if it is deprecated. AC_CHECK_FUNCS([daemon]) if test $ac_cv_func_daemon = yes; then ACX_FUNC_DEPRECATED([daemon], [(void)daemon(0, 0);], [ #include #include ]) fi AC_CHECK_MEMBERS([struct sockaddr_un.sun_len],,,[ AC_INCLUDES_DEFAULT #ifdef HAVE_SYS_UN_H #include #endif ]) AC_CHECK_MEMBERS([struct in_pktinfo.ipi_spec_dst],,,[ AC_INCLUDES_DEFAULT #if HAVE_SYS_PARAM_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_SYS_UIO_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif #ifdef HAVE_NETINET_TCP_H #include #endif #ifdef HAVE_ARPA_INET_H #include #endif #ifdef HAVE_WINSOCK2_H #include #endif #ifdef HAVE_WS2TCPIP_H #include #endif ]) AC_MSG_CHECKING([for htobe64]) AC_LINK_IFELSE([AC_LANG_PROGRAM([ #include #ifdef HAVE_ENDIAN_H # include #endif #ifdef HAVE_SYS_ENDIAN_H # include #endif ], [unsigned long long x = htobe64(0); printf("%u", (unsigned)x);])], AC_MSG_RESULT(yes) AC_DEFINE(HAVE_HTOBE64, 1, [If we have htobe64]), AC_MSG_RESULT(no)) AC_MSG_CHECKING([for be64toh]) AC_LINK_IFELSE([AC_LANG_PROGRAM([ #include #ifdef HAVE_ENDIAN_H # include #endif #ifdef HAVE_SYS_ENDIAN_H # include #endif ], [unsigned long long x = be64toh(0); printf("%u", (unsigned)x);])], AC_MSG_RESULT(yes) AC_DEFINE(HAVE_BE64TOH, 1, [If we have be64toh]), AC_MSG_RESULT(no)) AC_SEARCH_LIBS([setusercontext], [util]) AC_CHECK_FUNCS([tzset sigprocmask fcntl getpwnam endpwent getrlimit setrlimit setsid chroot kill chown sleep usleep random srandom recvmsg sendmsg writev socketpair glob initgroups strftime localtime_r setusercontext _beginthreadex endservent endprotoent fsync shmget accept4 getifaddrs if_nametoindex poll gettid]) AC_CHECK_FUNCS([setresuid],,[AC_CHECK_FUNCS([setreuid])]) AC_CHECK_FUNCS([setresgid],,[AC_CHECK_FUNCS([setregid])]) # check if setreuid en setregid fail, on MacOSX10.4(darwin8). if echo $host_os | grep darwin8 > /dev/null; then AC_DEFINE(DARWIN_BROKEN_SETREUID, 1, [Define this if on macOSX10.4-darwin8 and setreuid and setregid do not work]) fi AC_CHECK_DECLS([inet_pton,inet_ntop], [], [], [ AC_INCLUDES_DEFAULT #ifdef HAVE_NETINET_IN_H #include #endif #ifdef HAVE_NETINET_TCP_H #include #endif #ifdef HAVE_ARPA_INET_H #include #endif #ifdef HAVE_WINSOCK2_H #include #endif #ifdef HAVE_WS2TCPIP_H #include #endif ]) AC_REPLACE_FUNCS(inet_aton) AC_REPLACE_FUNCS(inet_pton) AC_REPLACE_FUNCS(inet_ntop) AC_REPLACE_FUNCS(snprintf) # test if snprintf return the proper length if test "x$ac_cv_func_snprintf" = xyes; then if test c${cross_compiling} = cno; then AC_MSG_CHECKING([for correct snprintf return value]) AC_RUN_IFELSE([AC_LANG_SOURCE(AC_INCLUDES_DEFAULT [[ int main(void) { return !(snprintf(NULL, 0, "test") == 4); } ]])], [AC_MSG_RESULT(yes)], [ AC_MSG_RESULT(no) AC_DEFINE([SNPRINTF_RET_BROKEN], [], [define if (v)snprintf does not return length needed, (but length used)]) AC_LIBOBJ(snprintf) ], [AC_MSG_RESULT(maybe)]) fi fi AC_REPLACE_FUNCS(strlcat) AC_REPLACE_FUNCS(strlcpy) AC_REPLACE_FUNCS(memmove) AC_REPLACE_FUNCS(gmtime_r) AC_REPLACE_FUNCS(isblank) AC_REPLACE_FUNCS(explicit_bzero) dnl without CTIME, ARC4-functions and without reallocarray. LIBOBJ_WITHOUT_CTIMEARC4="$LIBOBJS" AC_SUBST(LIBOBJ_WITHOUT_CTIMEARC4) AC_MSG_CHECKING([for reallocarray]) AC_LINK_IFELSE([AC_LANG_SOURCE(AC_INCLUDES_DEFAULT [[ #ifndef _OPENBSD_SOURCE #define _OPENBSD_SOURCE 1 #endif #include int main(void) { void* p = reallocarray(NULL, 10, 100); free(p); return 0; } ]])], [AC_MSG_RESULT(yes) AC_DEFINE(HAVE_REALLOCARRAY, 1, [If we have reallocarray(3)]) ], [ AC_MSG_RESULT(no) AC_LIBOBJ(reallocarray) ]) AC_CHECK_DECLS([reallocarray]) if test "$USE_NSS" = "no"; then AC_REPLACE_FUNCS(arc4random) AC_REPLACE_FUNCS(arc4random_uniform) if test "$ac_cv_func_arc4random" = "no"; then AC_LIBOBJ(arc4_lock) AC_CHECK_FUNCS([getentropy],,[ if test "$USE_WINSOCK" = 1; then AC_LIBOBJ(getentropy_win) else case "$host" in Darwin|*darwin*) AC_LIBOBJ(getentropy_osx) ;; *solaris*|*sunos*|SunOS) AC_LIBOBJ(getentropy_solaris) AC_CHECK_HEADERS([sys/sha2.h],, [ AC_CHECK_FUNCS([SHA512_Update],,[ AC_LIBOBJ(sha512) ]) ], [AC_INCLUDES_DEFAULT]) if test "$ac_cv_header_sys_sha2_h" = "yes"; then # this lib needed for sha2 on solaris LIBS="$LIBS -lmd" fi AC_SEARCH_LIBS([clock_gettime], [rt]) ;; *freebsd*|*FreeBSD) AC_LIBOBJ(getentropy_freebsd) ;; *linux*|Linux|*) AC_LIBOBJ(getentropy_linux) AC_CHECK_FUNCS([SHA512_Update],,[ AC_DEFINE([COMPAT_SHA512], [1], [Do sha512 definitions in config.h]) AC_LIBOBJ(sha512) ]) AC_CHECK_HEADERS([sys/sysctl.h],,, [AC_INCLUDES_DEFAULT]) AC_CHECK_FUNCS([getauxval]) AC_SEARCH_LIBS([clock_gettime], [rt]) ;; esac fi ]) fi fi LIBOBJ_WITHOUT_CTIME="$LIBOBJS" AC_SUBST(LIBOBJ_WITHOUT_CTIME) AC_REPLACE_FUNCS(ctime_r) AC_REPLACE_FUNCS(strsep) AC_ARG_ENABLE(allsymbols, AS_HELP_STRING([--enable-allsymbols],[export all symbols from libunbound and link binaries to it, smaller install size but libunbound export table is polluted by internal symbols])) case "$enable_allsymbols" in yes) COMMON_OBJ_ALL_SYMBOLS="" UBSYMS="" EXTRALINK="libunbound.la" AC_DEFINE(EXPORT_ALL_SYMBOLS, 1, [Define this if you enabled-allsymbols from libunbound to link binaries to it for smaller install size, but the libunbound export table is polluted by internal symbols]) ;; no|*) COMMON_OBJ_ALL_SYMBOLS='$(COMMON_OBJ)' UBSYMS='-export-symbols $(srcdir)/libunbound/ubsyms.def' EXTRALINK="" ;; esac AC_SUBST(COMMON_OBJ_ALL_SYMBOLS) AC_SUBST(EXTRALINK) AC_SUBST(UBSYMS) if test x_$enable_lock_checks = x_yes; then UBSYMS="-export-symbols clubsyms.def" cp ${srcdir}/libunbound/ubsyms.def clubsyms.def echo lock_protect >> clubsyms.def echo lock_unprotect >> clubsyms.def echo lock_get_mem >> clubsyms.def echo checklock_start >> clubsyms.def echo checklock_stop >> clubsyms.def echo checklock_lock >> clubsyms.def echo checklock_unlock >> clubsyms.def echo checklock_init >> clubsyms.def echo checklock_thrcreate >> clubsyms.def echo checklock_thrjoin >> clubsyms.def fi # check for dnstap if requested dt_DNSTAP([$UNBOUND_RUN_DIR/dnstap.sock], [ AC_DEFINE([USE_DNSTAP], [1], [Define to 1 to enable dnstap support]) AC_SUBST([ENABLE_DNSTAP], [1]) AC_SUBST([opt_dnstap_socket_path]) ACX_ESCAPE_BACKSLASH($opt_dnstap_socket_path, hdr_dnstap_socket_path) AC_DEFINE_UNQUOTED(DNSTAP_SOCKET_PATH, ["$hdr_dnstap_socket_path"], [default dnstap socket path]) AC_SUBST(DNSTAP_SOCKET_PATH,["$hdr_dnstap_socket_path"]) AC_SUBST(DNSTAP_SOCKET_TESTBIN,['unbound-dnstap-socket$(EXEEXT)']) AC_SUBST([DNSTAP_SRC], ["dnstap/dnstap.c dnstap/dnstap.pb-c.c dnstap/dnstap_fstrm.c dnstap/dtstream.c"]) AC_SUBST([DNSTAP_OBJ], ["dnstap.lo dnstap.pb-c.lo dnstap_fstrm.lo dtstream.lo"]) ], [ AC_SUBST([ENABLE_DNSTAP], [0]) ] ) # check for dnscrypt if requested dnsc_DNSCRYPT([ AC_DEFINE([USE_DNSCRYPT], [1], [Define to 1 to enable dnscrypt support]) AC_SUBST([ENABLE_DNSCRYPT], [1]) AC_SUBST([DNSCRYPT_SRC], ["dnscrypt/dnscrypt.c"]) AC_SUBST([DNSCRYPT_OBJ], ["dnscrypt.lo"]) ], [ AC_SUBST([ENABLE_DNSCRYPT], [0]) ] ) # check for cachedb if requested AC_ARG_ENABLE(cachedb, AS_HELP_STRING([--enable-cachedb],[enable cachedb module that can use external cache storage])) # turn on cachedb when hiredis support is enabled. if test "$found_libhiredis" = "yes"; then enable_cachedb="yes"; fi case "$enable_cachedb" in yes) AC_DEFINE([USE_CACHEDB], [1], [Define to 1 to use cachedb support]) AC_SUBST([CACHEDB_SRC], ["cachedb/cachedb.c cachedb/redis.c"]) AC_SUBST([CACHEDB_OBJ], ["cachedb.lo redis.lo"]) ;; no|*) # nothing ;; esac # check for ipsecmod if requested AC_ARG_ENABLE(ipsecmod, AS_HELP_STRING([--enable-ipsecmod],[Enable ipsecmod module that facilitates opportunistic IPsec])) case "$enable_ipsecmod" in yes) AC_DEFINE([USE_IPSECMOD], [1], [Define to 1 to use ipsecmod support.]) IPSECMOD_OBJ="ipsecmod.lo ipsecmod-whitelist.lo" AC_SUBST(IPSECMOD_OBJ) IPSECMOD_HEADER='$(srcdir)/ipsecmod/ipsecmod.h $(srcdir)/ipsecmod/ipsecmod-whitelist.h' AC_SUBST(IPSECMOD_HEADER) ;; no|*) # nothing ;; esac # check for ipset if requested AC_ARG_ENABLE(ipset, AS_HELP_STRING([--enable-ipset],[enable ipset module])) case "$enable_ipset" in yes) AC_DEFINE([USE_IPSET], [1], [Define to 1 to use ipset support]) IPSET_SRC="ipset/ipset.c" AC_SUBST(IPSET_SRC) IPSET_OBJ="ipset.lo" AC_SUBST(IPSET_OBJ) # BSD's pf AC_CHECK_HEADERS([net/pfvar.h], [], [ # mnl AC_ARG_WITH(libmnl, AS_HELP_STRING([--with-libmnl=path],[specify explicit path for libmnl.]), [ ],[ withval="yes" ]) found_libmnl="no" AC_MSG_CHECKING(for libmnl) if test x_$withval = x_ -o x_$withval = x_yes; then withval="/usr/local /opt/local /usr/lib /usr/pkg /usr/sfw /usr" fi for dir in $withval ; do if test -f "$dir/include/libmnl/libmnl.h" -o -f "$dir/include/libmnl/libmnl/libmnl.h"; then found_libmnl="yes" dnl assume /usr is in default path. extralibmnl="" if test -f "$dir/include/libmnl/libmnl/libmnl.h"; then extralibmnl="/libmnl" fi if test "$dir" != "/usr" -o -n "$extralibmnl"; then CPPFLAGS="$CPPFLAGS -I$dir/include$extralibmnl" fi if test "$dir" != "/usr"; then LDFLAGS="$LDFLAGS -L$dir/lib" fi AC_MSG_RESULT(found in $dir) LIBS="$LIBS -lmnl" break; fi done if test x_$found_libmnl != x_yes; then AC_MSG_ERROR([Could not find libmnl, libmnl.h]) fi ], [ #include #include ]) ;; no|*) # nothing ;; esac AC_ARG_ENABLE(explicit-port-randomisation, AS_HELP_STRING([--disable-explicit-port-randomisation],[disable explicit source port randomisation and rely on the kernel to provide random source ports])) case "$enable_explicit_port_randomisation" in no) AC_DEFINE([DISABLE_EXPLICIT_PORT_RANDOMISATION], [1], [Define this to enable kernel based UDP source port randomization.]) ;; yes|*) ;; esac if echo "$host" | $GREP -i -e linux >/dev/null; then AC_ARG_ENABLE(linux-ip-local-port-range, AS_HELP_STRING([--enable-linux-ip-local-port-range], [Define this to enable use of /proc/sys/net/ipv4/ip_local_port_range as a default outgoing port range. This is only for the libunbound on Linux and does not affect unbound resolving daemon itself. This may severely limit the number of available outgoing ports and thus decrease randomness. Define this only when the target system restricts (e.g. some of SELinux enabled distributions) the use of non-ephemeral ports.])) case "$enable_linux_ip_local_port_range" in yes) AC_DEFINE([USE_LINUX_IP_LOCAL_PORT_RANGE], [1], [Define this to enable use of /proc/sys/net/ipv4/ip_local_port_range as a default outgoing port range. This is only for the libunbound on Linux and does not affect unbound resolving daemon itself. This may severely limit the number of available outgoing ports and thus decrease randomness. Define this only when the target system restricts (e.g. some of SELinux enabled distributions) the use of non-ephemeral ports.]) ;; no|*) ;; esac fi AC_MSG_CHECKING([if ${MAKE:-make} supports $< with implicit rule in scope]) # on openBSD, the implicit rule make $< work. # on Solaris, it does not work ($? is changed sources, $^ lists dependencies). # gmake works. cat >conftest.make </dev/null rm -f conftest.make conftest.c conftest.dir/conftest.c rm -rf conftest.dir if test ! -f conftest.lo; then AC_MSG_RESULT(no) SOURCEDETERMINE='echo "$^" | awk "-F " "{print \$$1;}" > .source' SOURCEFILE='`cat .source`' else AC_MSG_RESULT(yes) SOURCEDETERMINE=':' SOURCEFILE='$<' fi rm -f conftest.lo AC_SUBST(SOURCEDETERMINE) AC_SUBST(SOURCEFILE) # see if we want to build the library or everything ALLTARGET="alltargets" INSTALLTARGET="install-all" AC_ARG_WITH(libunbound-only, AS_HELP_STRING([--with-libunbound-only],[do not build daemon and tool programs]), [ if test "$withval" = "yes"; then ALLTARGET="lib" INSTALLTARGET="install-lib" fi ]) if test $ALLTARGET = "alltargets"; then if test $USE_NSS = "yes"; then AC_MSG_ERROR([--with-nss can only be used in combination with --with-libunbound-only.]) fi if test $USE_NETTLE = "yes"; then AC_MSG_ERROR([--with-nettle can only be used in combination with --with-libunbound-only.]) fi fi AC_SUBST(ALLTARGET) AC_SUBST(INSTALLTARGET) ACX_STRIP_EXT_FLAGS if test -n "$LATE_LDFLAGS"; then LDFLAGS="$LATE_LDFLAGS $LDFLAGS" fi # remove start spaces LDFLAGS=`echo "$LDFLAGS"|sed -e 's/^ *//'` LIBS=`echo "$LIBS"|sed -e 's/^ *//'` AC_DEFINE_UNQUOTED([MAXSYSLOGMSGLEN], [10240], [Define to the maximum message length to pass to syslog.]) AH_BOTTOM( dnl this must be first AH_CONFIG, to define the flags before any includes. AHX_CONFIG_EXT_FLAGS dnl includes [ #ifndef _OPENBSD_SOURCE #define _OPENBSD_SOURCE 1 #endif #ifndef UNBOUND_DEBUG # ifndef NDEBUG # define NDEBUG # endif #endif /** Use small-ldns codebase */ #define USE_SLDNS 1 #ifdef HAVE_SSL # define LDNS_BUILD_CONFIG_HAVE_SSL 1 #endif #include #include #include #include #if STDC_HEADERS #include #include #endif #ifdef HAVE_STDARG_H #include #endif #ifdef HAVE_STDINT_H #include #endif #include #if HAVE_SYS_PARAM_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_SYS_UIO_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif #ifdef HAVE_NETINET_TCP_H #include #endif #ifdef HAVE_ARPA_INET_H #include #endif #ifdef HAVE_WINSOCK2_H #include #endif #ifdef HAVE_WS2TCPIP_H #include #endif #if !defined(USE_WINSOCK) || !defined(HAVE_SNPRINTF) || defined(SNPRINTF_RET_BROKEN) || defined(__USE_MINGW_ANSI_STDIO) #define ARG_LL "%ll" #else #define ARG_LL "%I64" #endif #ifndef AF_LOCAL #define AF_LOCAL AF_UNIX #endif ] AHX_CONFIG_FORMAT_ATTRIBUTE AHX_CONFIG_UNUSED_ATTRIBUTE AHX_CONFIG_FSEEKO AHX_CONFIG_MAXHOSTNAMELEN #if !defined(HAVE_SNPRINTF) || defined(SNPRINTF_RET_BROKEN) #define snprintf snprintf_unbound #define vsnprintf vsnprintf_unbound #include int snprintf (char *str, size_t count, const char *fmt, ...); int vsnprintf (char *str, size_t count, const char *fmt, va_list arg); #endif /* HAVE_SNPRINTF or SNPRINTF_RET_BROKEN */ AHX_CONFIG_INET_PTON(unbound) AHX_CONFIG_INET_NTOP(unbound) AHX_CONFIG_INET_ATON(unbound) AHX_CONFIG_MEMMOVE(unbound) AHX_CONFIG_STRLCAT(unbound) AHX_CONFIG_STRLCPY(unbound) AHX_CONFIG_GMTIME_R(unbound) AHX_CONFIG_REALLOCARRAY(unbound) AHX_CONFIG_W32_SLEEP AHX_CONFIG_W32_USLEEP AHX_CONFIG_W32_RANDOM AHX_CONFIG_W32_SRANDOM AHX_CONFIG_W32_FD_SET_T AHX_CONFIG_IPV6_MIN_MTU AHX_MEMCMP_BROKEN(unbound) [ #ifndef HAVE_CTIME_R #define ctime_r unbound_ctime_r char *ctime_r(const time_t *timep, char *buf); #endif #ifndef HAVE_STRSEP #define strsep unbound_strsep char *strsep(char **stringp, const char *delim); #endif #ifndef HAVE_ISBLANK #define isblank unbound_isblank int isblank(int c); #endif #ifndef HAVE_EXPLICIT_BZERO #define explicit_bzero unbound_explicit_bzero void explicit_bzero(void* buf, size_t len); #endif #if defined(HAVE_INET_NTOP) && !HAVE_DECL_INET_NTOP const char *inet_ntop(int af, const void *src, char *dst, size_t size); #endif #if defined(HAVE_INET_PTON) && !HAVE_DECL_INET_PTON int inet_pton(int af, const char* src, void* dst); #endif #if !defined(HAVE_STRPTIME) || !defined(STRPTIME_WORKS) #define strptime unbound_strptime struct tm; char *strptime(const char *s, const char *format, struct tm *tm); #endif #if !HAVE_DECL_REALLOCARRAY void *reallocarray(void *ptr, size_t nmemb, size_t size); #endif #ifdef HAVE_LIBBSD #include #include #endif #ifdef HAVE_LIBRESSL # if !HAVE_DECL_STRLCPY size_t strlcpy(char *dst, const char *src, size_t siz); # endif # if !HAVE_DECL_STRLCAT size_t strlcat(char *dst, const char *src, size_t siz); # endif # if !HAVE_DECL_ARC4RANDOM && defined(HAVE_ARC4RANDOM) uint32_t arc4random(void); # endif # if !HAVE_DECL_ARC4RANDOM_UNIFORM && defined(HAVE_ARC4RANDOM_UNIFORM) uint32_t arc4random_uniform(uint32_t upper_bound); # endif #endif /* HAVE_LIBRESSL */ #ifndef HAVE_ARC4RANDOM int getentropy(void* buf, size_t len); uint32_t arc4random(void); void arc4random_buf(void* buf, size_t n); void _ARC4_LOCK(void); void _ARC4_UNLOCK(void); void _ARC4_LOCK_DESTROY(void); #endif #ifndef HAVE_ARC4RANDOM_UNIFORM uint32_t arc4random_uniform(uint32_t upper_bound); #endif #ifdef COMPAT_SHA512 #ifndef SHA512_DIGEST_LENGTH #define SHA512_BLOCK_LENGTH 128 #define SHA512_DIGEST_LENGTH 64 #define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1) typedef struct _SHA512_CTX { uint64_t state[8]; uint64_t bitcount[2]; uint8_t buffer[SHA512_BLOCK_LENGTH]; } SHA512_CTX; #endif /* SHA512_DIGEST_LENGTH */ void SHA512_Init(SHA512_CTX*); void SHA512_Update(SHA512_CTX*, void*, size_t); void SHA512_Final(uint8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*); unsigned char *SHA512(void* data, unsigned int data_len, unsigned char *digest); #endif /* COMPAT_SHA512 */ #if defined(HAVE_EVENT_H) && !defined(HAVE_EVENT_BASE_ONCE) && !(defined(HAVE_EV_LOOP) || defined(HAVE_EV_DEFAULT_LOOP)) && (defined(HAVE_PTHREAD) || defined(HAVE_SOLARIS_THREADS)) /* using version of libevent that is not threadsafe. */ # define LIBEVENT_SIGNAL_PROBLEM 1 #endif #ifndef CHECKED_INET6 # define CHECKED_INET6 # ifdef AF_INET6 # define INET6 # else # define AF_INET6 28 # endif #endif /* CHECKED_INET6 */ #ifndef HAVE_GETADDRINFO struct sockaddr_storage; #include "compat/fake-rfc2553.h" #endif #ifdef UNBOUND_ALLOC_STATS # define malloc(s) unbound_stat_malloc_log(s, __FILE__, __LINE__, __func__) # define calloc(n,s) unbound_stat_calloc_log(n, s, __FILE__, __LINE__, __func__) # define free(p) unbound_stat_free_log(p, __FILE__, __LINE__, __func__) # define realloc(p,s) unbound_stat_realloc_log(p, s, __FILE__, __LINE__, __func__) # define strdup(s) unbound_stat_strdup_log(s, __FILE__, __LINE__, __func__) void *unbound_stat_malloc(size_t size); void *unbound_stat_calloc(size_t nmemb, size_t size); void unbound_stat_free(void *ptr); void *unbound_stat_realloc(void *ptr, size_t size); void *unbound_stat_malloc_log(size_t size, const char* file, int line, const char* func); void *unbound_stat_calloc_log(size_t nmemb, size_t size, const char* file, int line, const char* func); void unbound_stat_free_log(void *ptr, const char* file, int line, const char* func); void *unbound_stat_realloc_log(void *ptr, size_t size, const char* file, int line, const char* func); char *unbound_stat_strdup_log(const char *s, const char* file, int line, const char* func); #elif defined(UNBOUND_ALLOC_LITE) # include "util/alloc.h" #endif /* UNBOUND_ALLOC_LITE and UNBOUND_ALLOC_STATS */ /** default port for DNS traffic. */ #define UNBOUND_DNS_PORT 53 /** default port for DNS over TLS traffic. */ #define UNBOUND_DNS_OVER_TLS_PORT 853 /** default port for DNS over HTTPS traffic. */ #define UNBOUND_DNS_OVER_HTTPS_PORT 443 /** default port for unbound control traffic, registered port with IANA, ub-dns-control 8953/tcp unbound dns nameserver control */ #define UNBOUND_CONTROL_PORT 8953 /** the version of unbound-control that this software implements */ #define UNBOUND_CONTROL_VERSION 1 ]) dnl if we build from source tree, the man pages need @date@ and @version@ dnl if this is a distro tarball, that was already done by makedist.sh AC_SUBST(version, [VERSION_MAJOR.VERSION_MINOR.VERSION_MICRO]) AC_SUBST(date, [`date +'%b %e, %Y'`]) AC_CONFIG_FILES([Makefile doc/example.conf doc/libunbound.3 doc/unbound.8 doc/unbound-anchor.8 doc/unbound-checkconf.8 doc/unbound.conf.5 doc/unbound-control.8 doc/unbound-host.1 smallapp/unbound-control-setup.sh dnstap/dnstap_config.h dnscrypt/dnscrypt_config.h]) AC_CONFIG_HEADERS([config.h]) AC_OUTPUT