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#
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# Copyright (c) 2014-2015 Brent Cook
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# Parts based on configure.ac from Portable OpenNTPD:
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# Copyright (c) 2004-2008 Darren Tucker
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# which itself was based on configure.ac from OpenSSH:
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# Copyright (c) 1999-2004 Damien Miller
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#
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# Permission to use, copy, modify, and distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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AC_INIT([OpenNTPD], m4_esyscmd([tr -d '\n' < VERSION]))
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AC_CANONICAL_HOST
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AM_INIT_AUTOMAKE([subdir-objects foreign])
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AC_CONFIG_MACRO_DIR([m4])
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m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
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AC_PROG_CC
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AC_PROG_CC_STDC
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AM_PROG_CC_C_O
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AC_PROG_LIBTOOL
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AC_PROG_YACC
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CFLAGS="$CFLAGS -Wall -std=gnu99 -fno-strict-aliasing"
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case $host_os in
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*darwin*)
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HOST_OS=darwin
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AC_DEFINE(SETEUID_BREAKS_SETUID,[],[setuid after seteuid does not work])
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AC_DEFINE(BROKEN_SETREUID,[], [Broken setreuid])
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AC_DEFINE(BROKEN_SETREGID,[], [Broken setregid])
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AC_DEFINE(YYSTYPE_IS_DECLARED,[], [Broken bison])
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AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV])
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;;
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*freebsd*)
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HOST_OS=freebsd
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AC_SUBST([PROG_LDADD], ['-lthr'])
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;;
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*linux*)
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HOST_OS=linux
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CFLAGS="$CFLAGS -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_GNU_SOURCE"
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AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV])
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;;
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*netbsd*)
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HOST_OS=netbsd
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;;
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*openbsd*)
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HOST_OS=openbsd
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AC_DEFINE([HAVE_ATTRIBUTE__BOUNDED__], [1], [OpenBSD has __bounded__])
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AC_DEFINE([HAVE_ATTRIBUTE__DEAD], [1], [OpenBSD has __dead])
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;;
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*solaris*)
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HOST_OS=solaris
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CFLAGS="$CFLAGS -D__EXTENSIONS__ -D_XOPEN_SOURCE=600 -DBSD_COMP"
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AC_SUBST([PLATFORM_LDADD], ['-lnsl -lsocket'])
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;;
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*) ;;
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esac
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AM_CONDITIONAL([HOST_DARWIN], [test x$HOST_OS = xdarwin])
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AM_CONDITIONAL([HOST_FREEBSD], [test x$HOST_OS = xfreebsd])
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AM_CONDITIONAL([HOST_LINUX], [test x$HOST_OS = xlinux])
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AM_CONDITIONAL([HOST_NETBSD], [test x$HOST_OS = xnetbsd])
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AM_CONDITIONAL([HOST_OPENBSD], [test x$HOST_OS = xopenbsd])
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AM_CONDITIONAL([HOST_SOLARIS], [test x$HOST_OS = xsolaris])
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AC_CHECK_FUNC([dl_iterate_phdr],,
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[AC_SEARCH_LIBS([dl_iterate_phdr],[dl])])
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save_cflags="$CFLAGS"
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CFLAGS=-Wno-pointer-sign
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AC_MSG_CHECKING([whether CC supports -Wno-pointer-sign])
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
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[AC_MSG_RESULT([yes])]
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[AM_CFLAGS=-Wno-pointer-sign],
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[AC_MSG_RESULT([no])]
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)
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CFLAGS="$save_cflags $AM_CFLAGS"
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AC_MSG_CHECKING([if compiling with clang])
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[
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#ifndef __clang__
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not clang
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#endif
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]])],
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[AC_MSG_RESULT([yes])]
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[CLANG_FLAGS=-Qunused-arguments],
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[AC_MSG_RESULT([no])]
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)
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CFLAGS="$CFLAGS $CLANG_CFLAGS"
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LDFLAGS="$LDFLAGS $CLANG_FLAGS"
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# check functions that are expected to be in libc
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AC_CHECK_FUNCS([adjfreq ntp_adjtime adjtimex])
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AC_CHECK_FUNCS([arc4random arc4random_uniform asprintf explicit_bzero])
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AC_CHECK_FUNCS([closefrom daemon getentropy memmem poll reallocarray])
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AC_CHECK_FUNCS([setproctitle setgroups])
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AC_CHECK_FUNCS([setregid setresgid setreuid setresuid])
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AC_CHECK_FUNCS([strlcat strlcpy strtonum sysconf])
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# check auxiliary libraries that might contain other functions
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AC_SEARCH_LIBS([arc4random], [crypto])
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AC_SEARCH_LIBS([clock_getres],[rt posix4])
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AC_SEARCH_LIBS([clock_gettime],[rt posix4])
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AC_SEARCH_LIBS([ibuf_open], [util])
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AC_CHECK_FUNCS([arc4random ibuf_open])
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AC_CHECK_FUNCS([clock_gettime clock_getres])
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# check for libtls
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AC_SEARCH_LIBS([tls_config_set_ca_mem],[tls],
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[LIBS="$LIBS -ltls -lssl -lcrypto"],,[-lssl -lcrypto])
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AC_CHECK_FUNCS([tls_config_set_ca_mem])
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# check if libtls uses 3-argument tls_write
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AC_CACHE_CHECK([if tls_write takes 3 arguments], ac_cv_have_tls_write_3_arg, [
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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#include <tls.h>
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size_t outlen;
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]], [[ tls_write(NULL, NULL, 0); ]])],
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[ ac_cv_have_tls_write_3_arg="yes" ],
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[ ac_cv_have_tls_write_3_arg="no"
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])
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])
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AM_CONDITIONAL([HAVE_LIBTLS], [test "x$ac_cv_func_tls_config_set_ca_mem" = xyes \
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-a "x$ac_cv_have_tls_write_3_arg" = xyes])
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if test "x$ac_cv_func_tls_config_set_ca_mem" = xyes -a "x$ac_cv_have_tls_write_3_arg" = xyes; then
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AC_DEFINE([HAVE_LIBTLS], [1])
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fi
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# Share test results with automake
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AM_CONDITIONAL([HAVE_ADJFREQ], [test "x$ac_cv_func_adjfreq" = xyes])
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AM_CONDITIONAL([HAVE_ARC4RANDOM], [test "x$ac_cv_func_arc4random" = xyes])
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AM_CONDITIONAL([HAVE_ARC4RANDOM_UNIFORM], [test "x$ac_cv_func_arc4random_uniform" = xyes])
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AM_CONDITIONAL([HAVE_ASPRINTF], [test "x$ac_cv_func_asprintf" = xyes])
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AM_CONDITIONAL([HAVE_CLOSEFROM], [test "x$ac_cv_func_closefrom" = xyes])
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AM_CONDITIONAL([HAVE_CLOCK_GETRES], [test "x$ac_cv_func_clock_getres" = xyes])
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AM_CONDITIONAL([HAVE_CLOCK_GETTIME], [test "x$ac_cv_func_clock_gettime" = xyes])
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AM_CONDITIONAL([HAVE_DAEMON], [test "x$ac_cv_func_daemon" = xyes])
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AM_CONDITIONAL([HAVE_EXPLICIT_BZERO], [test "x$ac_cv_func_explicit_bzero" = xyes])
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AM_CONDITIONAL([HAVE_GETENTROPY], [test "x$ac_cv_func_getentropy" = xyes])
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AM_CONDITIONAL([HAVE_IFADDRS_H], [test "x$ac_cv_header_ifaddrs_h" = xyes])
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AM_CONDITIONAL([HAVE_IMSG], [test "x$ac_cv_func_ibuf_open" = xyes])
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AM_CONDITIONAL([HAVE_MEMMEM], [test "x$ac_cv_func_memmem" = xyes])
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AM_CONDITIONAL([HAVE_POLL], [test "x$ac_cv_func_poll" = xyes])
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AM_CONDITIONAL([HAVE_REALLOCARRAY], [test "x$ac_cv_func_reallocarray" = xyes])
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AM_CONDITIONAL([HAVE_SETGROUPS], [test "x$ac_cv_func_setgroups" = xyes])
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AM_CONDITIONAL([HAVE_SETRESGID], [test "x$ac_cv_func_setresgid" = xyes])
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AM_CONDITIONAL([HAVE_SETRESUID], [test "x$ac_cv_func_setresuid" = xyes])
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AM_CONDITIONAL([HAVE_SETPROCTITLE], [test "x$ac_cv_func_setproctitle" = xyes])
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AM_CONDITIONAL([HAVE_STRLCAT], [test "x$ac_cv_func_strlcat" = xyes])
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AM_CONDITIONAL([HAVE_STRLCPY], [test "x$ac_cv_func_strlcpy" = xyes])
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AM_CONDITIONAL([HAVE_STRTONUM], [test "x$ac_cv_func_strtonum" = xyes])
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AM_CONDITIONAL([HAVE_SYSCONF], [test "x$ac_cv_func_sysconf" = xyes])
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# overrides for arc4random implementations with known issues
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AM_CONDITIONAL([HAVE_ARC4RANDOM],
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[test "x$HOST_OS" != xdarwin \
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-a "x$HOST_OS" != xfreebsd \
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-a "x$HOST_OS" != xnetbsd \
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-a "x$ac_cv_func_arc4random" = xyes])
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AM_CONDITIONAL([HAVE_ARC4RANDOM_UNIFORM],
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[test "x$HOST_OS" != xdarwin \
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-a "x$HOST_OS" != xfreebsd \
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-a "x$HOST_OS" != xnetbsd \
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-a "x$ac_cv_func_arc4random_uniform" = xyes])
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AC_CACHE_CHECK([if libc defines __progname], ac_cv_libc_defines___progname, [
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
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[[ extern char *__progname; printf("%s", __progname); ]])],
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[ ac_cv_libc_defines___progname="yes" ],
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[ ac_cv_libc_defines___progname="no"
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])
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])
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if test "x$ac_cv_libc_defines___progname" = "xyes" ; then
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AC_DEFINE([HAVE___PROGNAME], [1], [Define if libc defines __progname])
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fi
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AC_CACHE_CHECK([whether va_copy exists], ac_cv_have_va_copy, [
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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#include <stdarg.h>
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va_list x,y;
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]], [[ va_copy(x,y); ]])],
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[ ac_cv_have_va_copy="yes" ],
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[ ac_cv_have_va_copy="no"
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])
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])
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if test "x$ac_cv_have_va_copy" = "xyes" ; then
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AC_DEFINE([HAVE_VA_COPY], [1], [Define if va_copy exists])
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fi
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AC_CACHE_CHECK([whether __va_copy exists], ac_cv_have___va_copy, [
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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#include <stdarg.h>
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va_list x,y;
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]], [[ __va_copy(x,y); ]])],
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[ ac_cv_have___va_copy="yes" ], [ ac_cv_have___va_copy="no"
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])
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])
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if test "x$ac_cv_have___va_copy" = "xyes" ; then
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AC_DEFINE([HAVE___VA_COPY], [1], [Define if __va_copy exists])
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fi
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AC_CHECK_HEADERS([sys/sysctl.h err.h ifaddrs.h paths.h])
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AC_CHECK_HEADERS([sys/sensors.h],
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AM_CONDITIONAL(HAVE_SENSORS, true),
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AM_CONDITIONAL(HAVE_SENSORS, false)
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)
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AC_CHECK_MEMBERS([struct sockaddr_in.sin_len], , ,
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[ #include <netdb.h>
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#include <netinet/in.h>
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#include <sys/socket.h> ]
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)
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AC_ARG_WITH([privsep-user],
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AS_HELP_STRING([--with-privsep-user=user],
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[Privilege separation user for ntpd to use]),
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PRIVSEP_USER="$withval",
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PRIVSEP_USER="_ntp"
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)
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AC_DEFINE_UNQUOTED(NTPD_USER, "$PRIVSEP_USER", [Unprivileged user])
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AC_SUBST(PRIVSEP_USER)
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AC_ARG_WITH([privsep-path],
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AS_HELP_STRING([--with-privsep-path=path],
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[Privilege separation chroot path to check on install]),
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PRIVSEP_PATH="$withval",
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PRIVSEP_PATH="/var/empty"
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)
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AC_SUBST(PRIVSEP_PATH)
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AC_ARG_WITH([cacert],
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AS_HELP_STRING([--with-cacert=path],
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[CA certificate location for HTTPS constraint validation]),
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CONSTRAINT_CA="$withval",
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CONSTRAINT_CA="/etc/ssl/cert.pem"
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)
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AC_DEFINE_UNQUOTED(CONSTRAINT_CA, "$CONSTRAINT_CA", [CA certificate path])
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AC_CONFIG_FILES([
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Makefile
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include/Makefile
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compat/Makefile
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src/Makefile
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])
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AC_OUTPUT
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