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configure.ac
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configure.ac
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dnl Process this file with autoconf to produce a configure script.
origcflags="$CFLAGS"
AC_PREREQ(2.69)
AC_INIT([tinc], m4_esyscmd_s((git describe || echo UNKNOWN) | sed 's/release-//'))
AC_CONFIG_SRCDIR([src/tincd.c])
AM_INIT_AUTOMAKE([std-options subdir-objects nostdinc silent-rules -Wall])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4])
AM_SILENT_RULES([yes])
AC_USE_SYSTEM_EXTENSIONS
dnl Checks for programs.
AC_PROG_CC
AC_PROG_CC_STDC
AC_PROG_CPP
AC_PROG_INSTALL
AM_PROG_CC_C_O
dnl Check whether to enable code coverage testing, and if so, clear the default CFLAGS.
AX_CODE_COVERAGE
AS_IF([test "x$enable_code_coverage" = "xyes" -a "x$origcflags" = "x"], [CFLAGS=""])
dnl Check and set OS
AC_CANONICAL_HOST
case $host_os in
*linux*)
linux=true
AC_DEFINE(HAVE_LINUX, 1, [Linux])
;;
*freebsd*)
bsd=true
AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
;;
*darwin*)
bsd=true
AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
;;
*solaris*)
solaris=true
AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
;;
*openbsd*)
bsd=true
AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
;;
*netbsd*)
bsd=true
AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
;;
*dragonfly*)
bsd=true
AC_DEFINE(HAVE_DRAGONFLY, 1, [DragonFly])
;;
*bsd*)
bsd=true
AC_MSG_WARN("Unknown BSD variant, tinc might not compile or work!")
AC_DEFINE(HAVE_BSD, 1, [Unknown BSD variant])
;;
*cygwin*)
AC_MSG_ERROR("Cygwin is no longer supported. Use MinGW to build native Windows binaries.")
;;
*mingw*)
mingw=true
AC_DEFINE(HAVE_MINGW, 1, [MinGW])
LIBS="$LIBS -lws2_32 -lgdi32 -lcrypt32 -liphlpapi"
LDFLAGS="$LDFLAGS -static"
CPPFLAGS="$CPPFLAGS -DMINIUPNP_STATICLIB"
;;
*)
AC_MSG_ERROR("Unknown operating system.")
;;
esac
AC_ARG_ENABLE(uml,
AS_HELP_STRING([--enable-uml], [enable support for User Mode Linux]),
[ AS_IF([test "x$enable_uml" = "xyes"],
[ AC_DEFINE(ENABLE_UML, 1, [Support for UML])
uml=true
],
[uml=false])
],
[uml=false]
)
AC_ARG_ENABLE(vde,
AS_HELP_STRING([--enable-vde], [enable support for Virtual Distributed Ethernet]),
[ AS_IF([test "x$enable_vde" = "xyes"],
[ AC_CHECK_HEADERS(libvdeplug.h,
[AC_CHECK_LIB(vdeplug, vde_close,
[LIBS="$LIBS -lvdeplug"],
[AC_MSG_ERROR("VDE plug library files not found.")]
)],
[AC_MSG_ERROR([VDE plug header files not found.]); break])
AC_DEFINE(ENABLE_VDE, 1, [Support for VDE])
vde=true
],
[vde=false])
],
[vde=false]
)
AC_ARG_ENABLE(tunemu,
AS_HELP_STRING([--enable-tunemu], [enable support for the tunemu driver]),
[ AS_IF([test "x$enable_tunemu" = "xyes"],
[ AC_DEFINE(ENABLE_TUNEMU, 1, [Support for tunemu])
tunemu=true
],
[tunemu=false])
],
[tunemu=false]
)
AC_ARG_WITH(systemd,
AS_HELP_STRING([--with-systemd@<:@=DIR@:>@], [install systemd service files @<:@to DIR if specified@:>@]),
[ systemd=true; systemd_path="$with_systemd" ],
[ systemd=false ]
)
AS_IF([test "x$with_systemd" = "xyes"], [systemd_path="\${libdir}/systemd/system"],
[AS_IF([test "x$with_systemd" = "xno"], [systemd=false])])
AC_SUBST(systemd_path, $systemd_path)
AM_CONDITIONAL(LINUX, test "$linux" = true)
AM_CONDITIONAL(BSD, test "$bsd" = true)
AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
AM_CONDITIONAL(MINGW, test "$mingw" = true)
AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
AM_CONDITIONAL(UML, test "$uml" = true)
AM_CONDITIONAL(VDE, test "$vde" = true)
AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
AM_CONDITIONAL(WITH_SYSTEMD, test "$systemd" = true)
AM_CONDITIONAL(WITH_LEGACY_PROTOCOL, test "x$enable_legacy_protocol" != "xno")
AC_CACHE_SAVE
AS_IF([test -d /sw/include], [CPPFLAGS="$CPPFLAGS -I/sw/include"])
AS_IF([test -d /sw/lib], [LIBS="$LIBS -L/sw/lib"])
dnl Compiler hardening flags
dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
AX_CFLAGS_WARN_ALL(CFLAGS)
AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
AS_IF([test "x$enable_hardening" != "xno"],
[AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
case $host_os in
*mingw*)
AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
;;
*)
AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
;;
esac
AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
]
);
dnl Checks for header files.
dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
AC_CHECK_HEADERS([syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h getopt.h stddef.h sys/epoll.h])
AC_CHECK_HEADERS([net/if.h net/if_types.h net/ethernet.h net/if_arp.h netinet/in_systm.h netinet/in.h netinet/in6.h netpacket/packet.h],
[], [], [#include "$srcdir/src/have.h"]
)
AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h resolv.h],
[], [], [#include "$srcdir/src/have.h"]
)
AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
[], [], [#include "$srcdir/src/have.h"]
)
dnl Checks for typedefs, structures, and compiler characteristics.
tinc_ATTRIBUTE(__malloc__)
tinc_ATTRIBUTE(__nonnull__)
tinc_ATTRIBUTE(__warn_unused_result__)
AC_CHECK_TYPES([struct ether_header, struct arphdr, struct ether_arp, struct ip, struct icmp, struct ip6_hdr, struct icmp6_hdr, struct nd_neighbor_solicit, struct nd_opt_hdr], , ,
[#include "$srcdir/src/have.h"]
)
dnl Checks for library functions.
AC_CHECK_FUNCS([asprintf daemon fchmod flock fork gettimeofday mlockall putenv recvmmsg strsignal nanosleep unsetenv vsyslog devname fdevname],
[], [], [#include "$srcdir/src/have.h"]
)
AC_CHECK_FUNC(getopt_long, [getopt=true; AC_DEFINE(HAVE_GETOPT_LONG, 1, [getopt_long()])], [getopt=false])
AM_CONDITIONAL(GETOPT, test "$getopt" = true)
AC_CHECK_DECLS([res_init], [AC_CHECK_LIB(resolv, res_init)], [], [
#include <netinet/in.h>
#include <resolv.h>
])
dnl Operating system specific checks
case $host_os in
*linux*)
AC_CHECK_HEADERS([linux/if_tun.h],
[], [AC_MSG_ERROR([Required header file missng])], [#include "$srcdir/src/have.h"]
)
;;
*bsd*|*dragonfly*|*darwin*)
AC_CHECK_HEADERS([net/if_tun.h net/if_utun.h net/tun/if_tun.h net/if_tap.h net/tap/if_tap.h],
[], [], [#include "$srcdir/src/have.h"]
)
;;
*solaris*)
AC_CHECK_FUNC(socket, [], [AC_CHECK_LIB(socket, connect)])
;;
*)
;;
esac
AC_CACHE_SAVE
AC_ARG_ENABLE(legacy-protocol,
AS_HELP_STRING([--disable-legacy-protocol], [disable support for the legacy (tinc 1.0) protocol]),
[ AS_IF([test "x$enable_legacy_protocol" = "xno"],
[ AC_DEFINE(DISABLE_LEGACY, 1, [Disable support for the legacy (tinc 1.0) protocol]) ])
]
)
dnl These are defined in files in m4/
dnl AC_ARG_WITH(libgcrypt, AC_HELP_STRING([--with-libgcrypt], [enable use of libgcrypt instead of OpenSSL])], [])
dnl AC_ARG_WITH(openssl, AC_HELP_STRING([--without-openssl], [disable support for OpenSSL])], [])
tinc_CURSES
tinc_READLINE
tinc_ZLIB
tinc_LZO
tinc_LZ4
AS_IF([test "x$enable_legacy_protocol" != "xno"],
[AS_IF([test -n "$with_libgcrypt"],
[gcrypt=true; tinc_LIBGCRYPT],
[openssl=true; tinc_OPENSSL])
]
)
AM_CONDITIONAL(OPENSSL, test -n "$openssl")
AM_CONDITIONAL(GCRYPT, test -n "$gcrypt")
tinc_MINIUPNPC
AM_CONDITIONAL(MINIUPNPC, test "x$enable_miniupnpc" = "xyes")
dnl Check if support for jumbograms is requested
AC_ARG_ENABLE(jumbograms,
AS_HELP_STRING([--enable-jumbograms], [enable support for jumbograms (packets up to 9000 bytes)]),
[ AS_IF([test "x$enable_jumbograms" = "xyes"],
[ AC_DEFINE(ENABLE_JUMBOGRAMS, 1, [Support for jumbograms (packets up to 9000 bytes)]) ])
]
)
dnl Ensure runstatedir is set if we are using a version of autoconf that does not support it
if test "x$runstatedir" = "x"; then
AC_SUBST([runstatedir], ['${localstatedir}/run'])
fi
AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile test/Makefile test/testlib.sh systemd/Makefile bash_completion.d/Makefile])
AC_OUTPUT