fix documentation typo

[tinc] / configure.ac

diff --git a/configure.ac b/configure.ac
index 34f7333..000c7cf 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -130,6 +130,7 @@ if test -d /sw/lib ; then
 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$enable_hardening" != "xno"],
@@ -140,10 +141,8 @@ AS_IF([test "x$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"])
        ;;
@@ -159,7 +158,7 @@ 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_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"]
 )
@@ -203,6 +202,11 @@ AC_CHECK_DECLS([freeaddrinfo, gai_strerror, getaddrinfo, getnameinfo],
   [], [], [#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/
@@ -211,7 +215,7 @@ tinc_ZLIB
 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"],