fi
dnl Compiler hardening flags
+dnl No -fstack-protector-all because it doesn't work on all platforms or architectures.
AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
AS_IF([test "x$enable_hardening" != "xno"],
*mingw*)
AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
- # TODO: get -fstack-protector-all working with MinGW
;;
*)
- AX_CHECK_COMPILE_FLAG([-fstack-protector-all], [CPPFLAGS="$CPPFLAGS -fstack-protector-all"])
AX_CHECK_COMPILE_FLAG([-fPIE], [CPPFLAGS="$CPPFLAGS -fPIE"])
AX_CHECK_LINK_FLAG([-pie], [LDFLAGS="$LDFLAGS -pie"])
;;
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_HEADER_STDC
-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 time.h sys/uio.h sys/wait.h netdb.h arpa/inet.h dirent.h])
+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 time.h sys/uio.h sys/wait.h netdb.h arpa/inet.h dirent.h resolv.h])
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 netpacket/packet.h],
[], [], [#include "src/have.h"]
)
[], [], [#include "src/have.h"]
)
+AC_CHECK_DECLS([res_init], [], [], [
+ #include <netinet/in.h>
+ #include <resolv.h>
+])
+
AC_CACHE_SAVE
dnl These are defined in files in m4/
tinc_LZO
tinc_OPENSSL
-dnl Check if support for jumbograms is requested
+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"],