1 dnl Process this file with autoconf to produce a configure script.
4 AC_INIT([MeshLink], [0.1])
5 AC_CONFIG_SRCDIR([src/libmeshlink.c])
7 AM_INIT_AUTOMAKE([check-news std-options subdir-objects -Wall])
8 AC_CONFIG_HEADERS([config.h])
10 # Enable GNU extensions.
11 # Define this here, not in acconfig's @TOP@ section, since definitions
12 # in the latter don't make it into the configure-time tests.
14 AC_DEFINE([__USE_BSD], 1, [Enable BSD extensions])
16 dnl Checks for programs.
32 AC_DEFINE(HAVE_LINUX, 1, [Linux])
36 AC_DEFINE(HAVE_FREEBSD, 1, [FreeBSD])
40 AC_DEFINE(HAVE_DARWIN, 1, [Darwin (MacOS/X)])
44 AC_DEFINE(HAVE_SOLARIS, 1, [Solaris/SunOS])
48 AC_DEFINE(HAVE_OPENBSD, 1, [OpenBSD])
52 AC_DEFINE(HAVE_NETBSD, 1, [NetBSD])
56 AC_DEFINE(HAVE_DRAGONFLY, 1, [DragonFly])
60 AC_MSG_WARN("Unknown BSD variant, MeshLink might not compile or work!")
61 AC_DEFINE(HAVE_BSD, 1, [Unknown BSD variant])
65 AC_DEFINE(HAVE_CYGWIN, 1, [Cygwin])
69 AC_DEFINE(HAVE_MINGW, 1, [MinGW])
70 LIBS="$LIBS -lws2_32 -lgdi32 -lcrypt32"
73 AC_MSG_ERROR("Unknown operating system.")
77 AC_ARG_WITH(windows2000,
78 AS_HELP_STRING([--with-windows2000], [compile with support for Windows 2000. This disables support for tunneling over existing IPv6 networks.]),
79 [ AS_IF([test "x$with_windows2000" = "xyes"],
80 [AC_DEFINE(WITH_WINDOWS2000, 1, [Compile with support for Windows 2000])])
84 AM_CONDITIONAL(LINUX, test "$linux" = true)
85 AM_CONDITIONAL(BSD, test "$bsd" = true)
86 AM_CONDITIONAL(SOLARIS, test "$solaris" = true)
87 AM_CONDITIONAL(MINGW, test "$mingw" = true)
88 AM_CONDITIONAL(CYGWIN, test "$cygwin" = true)
89 AM_CONDITIONAL(UML, test "$uml" = true)
90 AM_CONDITIONAL(VDE, test "$vde" = true)
91 AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
95 if test -d /sw/include ; then
96 CPPFLAGS="$CPPFLAGS -I/sw/include"
98 if test -d /sw/lib ; then
99 LIBS="$LIBS -L/sw/lib"
102 dnl Compiler hardening flags
103 dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
105 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
106 AS_IF([test "x$enable_hardening" != "xno"],
107 [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORITFY_SOURCE=2"])
108 AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"])
109 AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"])
112 AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
113 AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
116 AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
117 AX_CHECK_COMPILE_FLAG([-fPIC], [CPPFLAGS="$CPPFLAGS -fPIC"])
118 AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
121 AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
122 AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
126 dnl Checks for header files.
127 dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
130 AC_CHECK_HEADERS([stdbool.h syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/uio.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h])
131 AC_CHECK_HEADERS([net/if.h net/if_types.h linux/if_tun.h net/if_tun.h net/tun/if_tun.h net/if_tap.h net/tap/if_tap.h net/ethernet.h net/if_arp.h netinet/in_systm.h netinet/in.h netinet/in6.h time.h netpacket/packet.h],
132 [], [], [#include "src/have.h"]
134 AC_CHECK_HEADERS([netinet/if_ether.h netinet/ip.h netinet/ip6.h],
135 [], [], [#include "src/have.h"]
137 AC_CHECK_HEADERS([netinet/tcp.h netinet/ip_icmp.h netinet/icmp6.h],
138 [], [], [#include "src/have.h"]
141 dnl Checks for typedefs, structures, and compiler characteristics.
149 MeshLink_ATTRIBUTE(__malloc__)
150 MeshLink_ATTRIBUTE(__warn_unused_result__)
152 AC_CHECK_TYPES([socklen_t, struct ether_header, struct arphdr, struct ether_arp, struct in_addr, struct addrinfo, struct ip, struct icmp, struct in6_addr, struct sockaddr_in6, struct ip6_hdr, struct icmp6_hdr, struct nd_neighbor_solicit, struct nd_opt_hdr], , ,
153 [#include "src/have.h"]
156 dnl Checks for library functions.
158 AC_CHECK_FUNCS([asprintf daemon fchmod flock ftime fork get_current_dir_name gettimeofday mlockall putenv random select strdup strerror strsignal strtol system time usleep unsetenv vsyslog writev],
159 [], [], [#include "src/have.h"]
162 dnl Support for SunOS
164 AC_CHECK_FUNC(socket, [], [
165 AC_CHECK_LIB(socket, connect)
167 AC_CHECK_FUNC(gethostbyname, [], [
168 AC_CHECK_LIB(nsl, gethostbyname)
171 AC_CHECK_DECLS([freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo],
172 [], [], [#include "src/have.h"]
177 dnl These are defined in files in m4/
183 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile m4/Makefile test/Makefile])