curl_xml: fix 3 small memory leaks
[collectd.git] / configure.in
index 1193583..5dac543 100644 (file)
@@ -2,6 +2,7 @@ dnl Process this file with autoconf to produce a configure script.
 AC_INIT(collectd, m4_esyscmd(./version-gen.sh))
 AC_CONFIG_SRCDIR(src/collectd.c)
 AC_CONFIG_HEADERS(src/config.h)
+AC_CONFIG_AUX_DIR([libltdl/config])
 
 m4_ifdef([LT_PACKAGE_VERSION],
        # libtool >= 2.2
@@ -47,6 +48,9 @@ AC_PROG_LEX
 AC_PROG_YACC
 PKG_PROG_PKG_CONFIG
 
+AC_CHECK_PROG([have_protoc_c], [protoc-c], [yes], [no])
+AM_CONDITIONAL(HAVE_PROTOC_C, test "x$have_protoc_c" = "xyes")
+
 AC_MSG_CHECKING([for kernel type ($host_os)])
 case $host_os in
        *linux*)
@@ -88,6 +92,10 @@ if test "x$ac_system" = "xSolaris"
 then
        AC_DEFINE(_POSIX_PTHREAD_SEMANTICS, 1, [Define to enforce POSIX thread semantics under Solaris.])
 fi
+if test "x$ac_system" = "xAIX"
+then
+       AC_DEFINE(_THREAD_SAFE_ERRNO, 1, [Define to use the thread-safe version of errno under AIX.])
+fi
 
 # Where to install .pc files.
 pkgconfigdir="${libdir}/pkgconfig"
@@ -115,7 +123,7 @@ AC_HEADER_SYS_WAIT
 AC_HEADER_DIRENT
 AC_HEADER_STDBOOL
 
-AC_CHECK_HEADERS(stdio.h stdint.h errno.h math.h stdarg.h syslog.h fcntl.h signal.h assert.h sys/types.h sys/socket.h sys/select.h poll.h netdb.h arpa/inet.h sys/resource.h sys/param.h kstat.h regex.h sys/ioctl.h endian.h sys/isa_defs.h)
+AC_CHECK_HEADERS(stdio.h errno.h math.h stdarg.h syslog.h fcntl.h signal.h assert.h sys/types.h sys/socket.h sys/select.h poll.h netdb.h arpa/inet.h sys/resource.h sys/param.h kstat.h regex.h sys/ioctl.h endian.h sys/isa_defs.h)
 
 # For ping library
 AC_CHECK_HEADERS(netinet/in_systm.h, [], [],
@@ -377,18 +385,36 @@ AC_CHECK_HEADERS(linux/netdevice.h, [], [],
 ])
 
 # For ipvs module
+have_linux_ip_vs_h="no"
 have_net_ip_vs_h="no"
 have_ip_vs_h="no"
+ip_vs_h_needs_kernel_cflags="no"
 if test "x$ac_system" = "xLinux"
 then
-       SAVE_CFLAGS="$CFLAGS"
-       CFLAGS="$CFLAGS $KERNEL_CFLAGS"
-
+       AC_CHECK_HEADERS(linux/ip_vs.h, [have_linux_ip_vs_h="yes"])
        AC_CHECK_HEADERS(net/ip_vs.h, [have_net_ip_vs_h="yes"])
        AC_CHECK_HEADERS(ip_vs.h, [have_ip_vs_h="yes"])
 
-       CFLAGS="$SAVE_CFLAGS"
+       if test "x$have_linux_ip_vs_h$have_net_ip_vs_h$have_ip_vs_h" = "xnonono" && test -d "$KERNEL_DIR"
+       then
+               SAVE_CFLAGS="$CFLAGS"
+               CFLAGS="$CFLAGS $KERNEL_CFLAGS"
+
+               AC_MSG_NOTICE([Did not find ip_vs.h. Trying again using headers from $KERNEL_DIR.])
+
+               AC_CHECK_HEADERS(linux/ip_vs.h, [have_linux_ip_vs_h="yes"])
+               AC_CHECK_HEADERS(net/ip_vs.h, [have_net_ip_vs_h="yes"])
+               AC_CHECK_HEADERS(ip_vs.h, [have_ip_vs_h="yes"])
+
+               if test "x$have_linux_ip_vs_h" = "xyes" || test "x$have_net_ip_vs_h" = "xyes" || test "x$have_ip_vs_h" = "xyes"
+               then
+                       ip_vs_h_needs_kernel_cflags="yes"
+               fi
+
+               CFLAGS="$SAVE_CFLAGS"
+       fi
 fi
+AM_CONDITIONAL(IP_VS_H_NEEDS_KERNEL_CFLAGS, test "x$ip_vs_h_needs_kernel_cflags" = "xyes")
 
 # For quota module
 AC_CHECK_HEADERS(sys/ucred.h, [], [],
@@ -477,20 +503,27 @@ AC_HEADER_TIME
 # Checks for library functions.
 #
 AC_PROG_GCC_TRADITIONAL
-AC_CHECK_FUNCS(gettimeofday select strdup strtol getaddrinfo getnameinfo strchr memcpy strstr strcmp strncmp strncpy strlen strncasecmp strcasecmp openlog closelog sysconf)
+AC_CHECK_FUNCS(gettimeofday select strdup strtol getaddrinfo getnameinfo strchr memcpy strstr strcmp strncmp strncpy strlen strncasecmp strcasecmp openlog closelog sysconf setenv if_indextoname)
 
 AC_FUNC_STRERROR_R
 
+SAVE_CFLAGS="$CFLAGS"
+# Emulate behavior of src/Makefile.am
+if test "x$GCC" = "xyes"
+then
+       CFLAGS="$CFLAGS -Wall -Werror"
+fi
+
 AC_CACHE_CHECK([for strtok_r],
   [c_cv_have_strtok_r_default],
   AC_LINK_IFELSE(
-    AC_LANG_PROGRAM(
-    [[[[
+    [AC_LANG_PROGRAM(
+    [[[
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
-    ]]]],
-    [[[[
+    ]]],
+    [[[
       char buffer[] = "foo,bar,baz";
       char *token;
       char *dummy;
@@ -500,10 +533,10 @@ AC_CACHE_CHECK([for strtok_r],
       saveptr = NULL;
       while ((token = strtok_r (dummy, ",", &saveptr)) != NULL)
       {
-       dummy = NULL;
+        dummy = NULL;
         printf ("token = %s;\n", token);
       }
-    ]]]]),
+    ]]])],
     [c_cv_have_strtok_r_default="yes"],
     [c_cv_have_strtok_r_default="no"]
   )
@@ -511,19 +544,18 @@ AC_CACHE_CHECK([for strtok_r],
 
 if test "x$c_cv_have_strtok_r_default" = "xno"
 then
-  SAVE_CFLAGS="$CFLAGS"
   CFLAGS="$CFLAGS -D_REENTRANT=1"
 
   AC_CACHE_CHECK([if strtok_r needs _REENTRANT],
     [c_cv_have_strtok_r_reentrant],
     AC_LINK_IFELSE(
-      AC_LANG_PROGRAM(
-      [[[[
+      [AC_LANG_PROGRAM(
+      [[[
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
-      ]]]],
-      [[[[
+      ]]],
+      [[[
         char buffer[] = "foo,bar,baz";
         char *token;
         char *dummy;
@@ -533,16 +565,22 @@ then
         saveptr = NULL;
         while ((token = strtok_r (dummy, ",", &saveptr)) != NULL)
         {
-         dummy = NULL;
+          dummy = NULL;
           printf ("token = %s;\n", token);
         }
-      ]]]]),
+      ]]])],
       [c_cv_have_strtok_r_reentrant="yes"],
       [AC_MSG_FAILURE([strtok_r isn't available. Please file a bugreport!])]
     )
   )
 fi
 
+CFLAGS="$SAVE_CFLAGS"
+if test "x$c_cv_have_strtok_r_reentrant" = "xyes"
+then
+       CFLAGS="$CFLAGS -D_REENTRANT=1"
+fi
+
 AC_CHECK_FUNCS(getpwnam_r getgrnam_r setgroups regcomp regerror regexec regfree)
 
 socket_needs_socket="no"
@@ -550,8 +588,16 @@ AC_CHECK_FUNCS(socket, [], AC_CHECK_LIB(socket, socket, [socket_needs_socket="ye
 AM_CONDITIONAL(BUILD_WITH_LIBSOCKET, test "x$socket_needs_socket" = "xyes")
 
 nanosleep_needs_rt="no"
-AC_CHECK_FUNCS(nanosleep, [], AC_CHECK_LIB(rt, nanosleep, [nanosleep_needs_rt="yes"], AC_MSG_ERROR(cannot find nanosleep)))
+nanosleep_needs_posix4="no"
+AC_CHECK_FUNCS(nanosleep,
+    [],
+    AC_CHECK_LIB(rt, nanosleep,
+        [nanosleep_needs_rt="yes"],
+        AC_CHECK_LIB(posix4, nanosleep,
+            [nanosleep_needs_posix4="yes"],
+            AC_MSG_ERROR(cannot find nanosleep))))
 AM_CONDITIONAL(BUILD_WITH_LIBRT, test "x$nanosleep_needs_rt" = "xyes")
+AM_CONDITIONAL(BUILD_WITH_LIBPOSIX4, test "x$nanosleep_needs_posix4" = "xyes")
 
 AC_CHECK_FUNCS(sysctl, [have_sysctl="yes"], [have_sysctl="no"])
 AC_CHECK_FUNCS(sysctlbyname, [have_sysctlbyname="yes"], [have_sysctlbyname="no"])
@@ -585,18 +631,18 @@ if test "x$nan_type" = "xnone"; then
   AC_CACHE_CHECK([whether NAN is defined by default],
     [c_cv_have_nan_default],
     AC_COMPILE_IFELSE(
-      AC_LANG_PROGRAM(
-      [[
+      [AC_LANG_PROGRAM(
+      [[[
 #include <stdlib.h>
 #include <math.h>
-static float foo = NAN;
-      ]],
-      [[
+static double foo = NAN;
+      ]]],
+      [[[
        if (isnan (foo))
         return 0;
        else
        return 1;
-      ]]),
+      ]]])],
       [c_cv_have_nan_default="yes"],
       [c_cv_have_nan_default="no"]
     )
@@ -610,19 +656,19 @@ if test "x$nan_type" = "xnone"; then
   AC_CACHE_CHECK([whether NAN is defined by __USE_ISOC99],
     [c_cv_have_nan_isoc],
     AC_COMPILE_IFELSE(
-      AC_LANG_PROGRAM(
-      [[
+      [AC_LANG_PROGRAM(
+      [[[
 #include <stdlib.h>
 #define __USE_ISOC99 1
 #include <math.h>
-static float foo = NAN;
-      ]],
-      [[
+static double foo = NAN;
+      ]]],
+      [[[
        if (isnan (foo))
         return 0;
        else
        return 1;
-      ]]),
+      ]]])],
       [c_cv_have_nan_isoc="yes"],
       [c_cv_have_nan_isoc="no"]
     )
@@ -638,8 +684,8 @@ if test "x$nan_type" = "xnone"; then
   AC_CACHE_CHECK([whether NAN can be defined by 0/0],
     [c_cv_have_nan_zero],
     AC_RUN_IFELSE(
-      AC_LANG_PROGRAM(
-      [[
+      [AC_LANG_PROGRAM(
+      [[[
 #include <stdlib.h>
 #include <math.h>
 #ifdef NAN
@@ -649,14 +695,14 @@ if test "x$nan_type" = "xnone"; then
 #ifndef isnan
 # define isnan(f) ((f) != (f))
 #endif
-static float foo = NAN;
-      ]],
-      [[
+static double foo = NAN;
+      ]]],
+      [[[
        if (isnan (foo))
         return 0;
        else
        return 1;
-      ]]),
+      ]]])],
       [c_cv_have_nan_zero="yes"],
       [c_cv_have_nan_zero="no"]
     )
@@ -699,19 +745,22 @@ if test "x$fp_layout_type" = "xunknown"; then
   AC_CACHE_CHECK([if doubles are stored in x86 representation],
     [c_cv_fp_layout_need_nothing],
     AC_RUN_IFELSE(
-      AC_LANG_PROGRAM(
-      [[[[
+      [AC_LANG_PROGRAM(
+      [[[
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #if HAVE_STDINT_H
 # include <stdint.h>
 #endif
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
 #if HAVE_STDBOOL_H
 # include <stdbool.h>
 #endif
-      ]]]],
-      [[[[
+      ]]],
+      [[[
        uint64_t i0;
        uint64_t i1;
        uint8_t c[8];
@@ -730,7 +779,7 @@ if test "x$fp_layout_type" = "xunknown"; then
                return (0);
        else
                return (1);
-      ]]]]),
+      ]]])],
       [c_cv_fp_layout_need_nothing="yes"],
       [c_cv_fp_layout_need_nothing="no"]
     )
@@ -743,14 +792,17 @@ if test "x$fp_layout_type" = "xunknown"; then
   AC_CACHE_CHECK([if endianflip converts to x86 representation],
     [c_cv_fp_layout_need_endianflip],
     AC_RUN_IFELSE(
-      AC_LANG_PROGRAM(
-      [[[[
+      [AC_LANG_PROGRAM(
+      [[[
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #if HAVE_STDINT_H
 # include <stdint.h>
 #endif
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
 #if HAVE_STDBOOL_H
 # include <stdbool.h>
 #endif
@@ -762,8 +814,8 @@ if test "x$fp_layout_type" = "xunknown"; then
                        (((uint64_t)(A) & 0x0000000000ff0000LL) << 24) | \
                        (((uint64_t)(A) & 0x000000000000ff00LL) << 40) | \
                        (((uint64_t)(A) & 0x00000000000000ffLL) << 56))
-      ]]]],
-      [[[[
+      ]]],
+      [[[
        uint64_t i0;
        uint64_t i1;
        uint8_t c[8];
@@ -782,7 +834,7 @@ if test "x$fp_layout_type" = "xunknown"; then
                return (0);
        else
                return (1);
-      ]]]]),
+      ]]])],
       [c_cv_fp_layout_need_endianflip="yes"],
       [c_cv_fp_layout_need_endianflip="no"]
     )
@@ -795,21 +847,24 @@ if test "x$fp_layout_type" = "xunknown"; then
   AC_CACHE_CHECK([if intswap converts to x86 representation],
     [c_cv_fp_layout_need_intswap],
     AC_RUN_IFELSE(
-      AC_LANG_PROGRAM(
-      [[[[
+      [AC_LANG_PROGRAM(
+      [[[
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #if HAVE_STDINT_H
 # include <stdint.h>
 #endif
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
 #if HAVE_STDBOOL_H
 # include <stdbool.h>
 #endif
 #define intswap(A)    ((((uint64_t)(A) & 0xffffffff00000000LL) >> 32) | \
                        (((uint64_t)(A) & 0x00000000ffffffffLL) << 32))
-      ]]]],
-      [[[[
+      ]]],
+      [[[
        uint64_t i0;
        uint64_t i1;
        uint8_t c[8];
@@ -828,7 +883,7 @@ if test "x$fp_layout_type" = "xunknown"; then
                return (0);
        else
                return (1);
-      ]]]]),
+      ]]])],
       [c_cv_fp_layout_need_intswap="yes"],
       [c_cv_fp_layout_need_intswap="no"]
     )
@@ -874,15 +929,15 @@ if test "x$have_getmntent" = "xc"; then
        AC_CACHE_CHECK([whether getmntent takes one argument],
                [c_cv_have_one_getmntent],
                AC_COMPILE_IFELSE(
-                       AC_LANG_PROGRAM([[AC_INCLUDES_DEFAULT
+                       [AC_LANG_PROGRAM([[AC_INCLUDES_DEFAULT
 #include "$srcdir/src/utils_mount.h"]],
-                               [[
+                               [[[
                                 FILE *fh;
                                 struct mntent *me;
                                 fh = setmntent ("/etc/mtab", "r");
                                 me = getmntent (fh);
-                               ]]
-                       ),
+                               ]]]
+                       )],
                        [c_cv_have_one_getmntent="yes"],
                        [c_cv_have_one_getmntent="no"]
                )
@@ -890,16 +945,16 @@ if test "x$have_getmntent" = "xc"; then
        AC_CACHE_CHECK([whether getmntent takes two arguments],
                [c_cv_have_two_getmntent],
                AC_COMPILE_IFELSE(
-                       AC_LANG_PROGRAM([[AC_INCLUDES_DEFAULT
+                       [AC_LANG_PROGRAM([[AC_INCLUDES_DEFAULT
 #include "$srcdir/src/utils_mount.h"]],
-                               [[
+                               [[[
                                 FILE *fh;
                                 struct mnttab mt;
                                 int status;
                                 fh = fopen ("/etc/mnttab", "r");
                                 status = getmntent (fh, &mt);
-                               ]]
-                       ),
+                               ]]]
+                       )],
                        [c_cv_have_two_getmntent="yes"],
                        [c_cv_have_two_getmntent="no"]
                )
@@ -935,16 +990,16 @@ fi
 AC_MSG_CHECKING([if have htonll defined])
 
     have_htonll="no"
-    AC_RUN_IFELSE([
-       AC_LANG_PROGRAM([
+    AC_LINK_IFELSE([
+       AC_LANG_PROGRAM([[[
 #include <sys/types.h>
 #include <netinet/in.h>
-#ifdef HAVE_INTTYPES_H
-#include <inttypes.h> 
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
 #endif
-       ][
+       ]]], [[[
           return htonll(0);
-       ])
+       ]]])
     ], [
       have_htonll="yes"
       AC_DEFINE(HAVE_HTONLL, 1, [Define if the function htonll exists.])
@@ -971,6 +1026,13 @@ AC_CHECK_MEMBERS([struct net_device_stats.rx_bytes, struct net_device_stats.tx_p
        #include <linux/netdevice.h>
        ])
 
+AC_CHECK_MEMBERS([struct ip_mreqn.imr_ifindex], [],
+       [],
+       [
+       #include <netinet/in.h>
+       #include <net/if.h>
+       ])
+
 AC_CHECK_MEMBERS([struct kinfo_proc.ki_pid, struct kinfo_proc.ki_rssize, struct kinfo_proc.ki_rusage],
        [
                AC_DEFINE(HAVE_STRUCT_KINFO_PROC_FREEBSD, 1,
@@ -981,6 +1043,7 @@ AC_CHECK_MEMBERS([struct kinfo_proc.ki_pid, struct kinfo_proc.ki_rssize, struct
                have_struct_kinfo_proc_freebsd="no"
        ],
        [
+AC_INCLUDES_DEFAULT
 #include <kvm.h>
 #include <sys/param.h>
 #include <sys/sysctl.h>
@@ -997,6 +1060,7 @@ AC_CHECK_MEMBERS([struct kinfo_proc.kp_proc, struct kinfo_proc.kp_eproc],
                have_struct_kinfo_proc_openbsd="no"
        ],
        [
+AC_INCLUDES_DEFAULT
 #include <sys/param.h>
 #include <sys/sysctl.h>
 #include <kvm.h>
@@ -1072,8 +1136,8 @@ AC_CHECK_LIB(hal,libhal_device_property_exists,
             [with_libhal="no"])
 if test "x$with_libhal" = "xyes"; then
        if test "x$PKG_CONFIG" != "x"; then
-               BUILD_WITH_LIBHAL_CFLAGS="`pkg-config --cflags hal`"
-               BUILD_WITH_LIBHAL_LIBS="`pkg-config --libs hal`"
+               BUILD_WITH_LIBHAL_CFLAGS="`$PKG_CONFIG --cflags hal`"
+               BUILD_WITH_LIBHAL_LIBS="`$PKG_CONFIG --libs hal`"
                AC_SUBST(BUILD_WITH_LIBHAL_CFLAGS)
                AC_SUBST(BUILD_WITH_LIBHAL_LIBS)
        fi
@@ -1172,6 +1236,7 @@ AM_CONDITIONAL(BUILD_WITH_LIBKVM_GETSWAPINFO, test "x$with_kvm_getswapinfo" = "x
 AC_CHECK_LIB(kvm, kvm_nlist, [with_kvm_nlist="yes"], [with_kvm_nlist="no"])
 if test "x$with_kvm_nlist" = "xyes"
 then
+       AC_CHECK_HEADERS(bsd/nlist.h nlist.h)
        AC_DEFINE(HAVE_LIBKVM_NLIST, 1,
                  [Define to 1 if you have the 'kvm' library with the 'kvm_nlist' symbol (-lkvm)])
        with_libkvm="yes"
@@ -1517,113 +1582,123 @@ AM_CONDITIONAL(BUILD_WITH_LIBGCRYPT, test "x$with_libgcrypt" = "xyes")
 # }}}
 
 # --with-libiptc {{{
-with_own_libiptc="no"
 AC_ARG_WITH(libiptc, [AS_HELP_STRING([--with-libiptc@<:@=PREFIX@:>@], [Path to libiptc.])],
 [
        if test "x$withval" = "xshipped"
        then
-               with_own_libiptc="yes"
-               with_libiptc="yes"
-       else if test "x$withval" != "xno" && test "x$withval" != "xyes"
+               with_libiptc="own"
+       else if test "x$withval" = "xyes"
        then
-               LIBIPTC_CPPFLAGS="$LIBIPTC_CPPFLAGS -I$withval/include"
-               LIBIPTC_LDFLAGS="$LIBIPTC_LDFLAGS -L$withval/lib"
-               with_libiptc="yes"
+               with_libiptc="pkgconfig"
+       else if test "x$withval" = "xno"
+       then
+               with_libiptc="no"
        else
-               with_libiptc="$withval"
-       fi; fi
+               with_libiptc="yes"
+               with_libiptc_cflags="-I$withval/include"
+               with_libiptc_libs="-L$withval/lib"
+       fi; fi; fi
 ],
 [
        if test "x$ac_system" = "xLinux"
        then
-               with_libiptc="yes"
+               with_libiptc="pkgconfig"
        else
                with_libiptc="no (Linux only)"
        fi
 ])
-SAVE_CPPFLAGS="$CPPFLAGS"
-SAVE_LDFLAGS="$LDFLAGS"
-CPPFLAGS="$CPPFLAGS $LIBIPTC_CPPFLAGS"
-LDFLAGS="$LDFLAGS $LIBIPTC_LDFLAGS"
-# check whether the header file for libiptc is available.
-if test "x$with_libiptc" = "xyes" && test "x$with_own_libiptc" = "xno"
+
+if test "x$with_libiptc" = "xpkgconfig" && test "x$PKG_CONFIG" = "x"
 then
-       AC_CHECK_HEADERS(libiptc/libiptc.h,
-       [
-               AC_DEFINE(HAVE_LIBIPTC_LIBIPTC_H, 1, [Define to 1 if you have the <libiptc/libiptc.h> header file.])
-       ],
-       [
-               with_libiptc="yes"
-               with_own_libiptc="yes"
-       ])
+       with_libiptc="no (Don't have pkg-config)"
 fi
-if test "x$with_libiptc" = "xyes" && test "x$with_own_libiptc" = "xno"
+
+if test "x$with_libiptc" = "xpkgconfig"
 then
-       AC_CHECK_HEADERS(libiptc/libip6tc.h,
-       [
-               AC_DEFINE(HAVE_LIBIPTC_LIBIP6TC_H, 1, [Define to 1 if you have the <libiptc/libip6tc.h> header file.])
-       ],
-       [
-               with_libiptc="yes"
-               with_own_libiptc="yes"
-       ])
+       $PKG_CONFIG --exists 'libiptc' 2>/dev/null
+       if test $? -ne 0
+       then
+               with_libiptc="no (pkg-config doesn't know libiptc)"
+       fi
+fi
+if test "x$with_libiptc" = "xpkgconfig"
+then
+       with_libiptc_cflags="`$PKG_CONFIG --cflags 'libiptc'`"
+       if test $? -ne 0
+       then
+               with_libiptc="no ($PKG_CONFIG failed)"
+       fi
+       with_libiptc_libs="`$PKG_CONFIG --libs 'libiptc'`"
+       if test $? -ne 0
+       then
+               with_libiptc="no ($PKG_CONFIG failed)"
+       fi
+fi
+
+SAVE_CPPFLAGS="$CPPFLAGS"
+CPPFLAGS="$CPPFLAGS $with_libiptc_cflags"
+
+# check whether the header file for libiptc is available.
+if test "x$with_libiptc" = "xpkgconfig"
+then
+       AC_CHECK_HEADERS(libiptc/libiptc.h libiptc/libip6tc.h, ,
+                       [with_libiptc="no (header file missing)"])
 fi
 # If the header file is available, check for the required type declaractions.
 # They may be missing in old versions of libiptc. In that case, they will be
 # declared in the iptables plugin.
-if test "x$with_libiptc" = "xyes" && test "x$with_own_libiptc" = "xno"
+if test "x$with_libiptc" = "xpkgconfig"
 then
-       AC_CHECK_TYPES([iptc_handle_t, ip6tc_handle_t], [], [],
-       [
-#if OWN_LIBIPTC
-# include "$srcdir/src/owniptc/libiptc.h"
-# include "$srcdir/src/owniptc/libip6tc.h"
-#else
-# include <libiptc/libiptc.h>
-# include <libiptc/libip6tc.h>
-#endif
-       ])
+       AC_CHECK_TYPES([iptc_handle_t, ip6tc_handle_t], [], [])
 fi
 # Check for the iptc_init symbol in the library.
-if test "x$with_libiptc" = "xyes" && test "x$with_own_libiptc" = "xno"
+# This could be in iptc or ip4tc
+if test "x$with_libiptc" = "xpkgconfig"
 then
-       AC_CHECK_LIB(iptc, iptc_init,
-       [
-               AC_DEFINE(HAVE_LIBIPTC, 1, [Define to 1 if you have the iptc library (-liptc).])
-       ],
-       [
-               with_libiptc="yes"
-               with_own_libiptc="yes"
-       ])
+       SAVE_LIBS="$LIBS"
+       AC_SEARCH_LIBS(iptc_init, [iptc ip4tc],
+                       [with_libiptc="pkgconfig"],
+                       [with_libiptc="no"],
+                       [$with_libiptc_libs])
+       LIBS="$SAVE_LIBS"
+fi
+if test "x$with_libiptc" = "xpkgconfig"
+then
+       with_libiptc="yes"
+fi
+
+CPPFLAGS="$SAVE_CPPFLAGS"
+
+if test "x$with_libiptc" = "xown"
+then
+       with_libiptc_cflags=""
+       with_libiptc_libs=""
 fi
-# The system wide version failed for some reason. Check if we have the required
-# headers to build the shipped version.
-if test "x$with_libiptc" = "xyes" && test "x$with_own_libiptc" = "xyes"
+if test "x$with_libiptc" = "xown"
 then
        AC_CHECK_HEADERS(linux/netfilter_ipv4/ip_tables.h linux/netfilter_ipv6/ip6_tables.h linux/netfilter/x_tables.h, [],
        [
                with_libiptc="no (Linux iptables headers not found)"
-               with_own_libiptc="no"
        ],
        [
 #include "$srcdir/src/owniptc/ipt_kernel_headers.h"
        ])
 fi
+AM_CONDITIONAL(BUILD_WITH_OWN_LIBIPTC, test "x$with_libiptc" = "xown")
+if test "x$with_libiptc" = "xown"
+then
+       AC_DEFINE(OWN_LIBIPTC, 1, [Define to 1 if we use the shipped iptc library.])
+       with_libiptc="yes"
+fi
+
 AM_CONDITIONAL(BUILD_WITH_LIBIPTC, test "x$with_libiptc" = "xyes")
-AM_CONDITIONAL(BUILD_WITH_OWN_LIBIPTC, test "x$with_own_libiptc" = "xyes")
 if test "x$with_libiptc" = "xyes"
 then
-       BUILD_WITH_LIBIPTC_CPPFLAGS="$LIBIPTC_CPPFLAGS"
-       BUILD_WITH_LIBIPTC_LDFLAGS="$LIBIPTC_LDFLAGS"
+       BUILD_WITH_LIBIPTC_CPPFLAGS="$with_libiptc_cflags"
+       BUILD_WITH_LIBIPTC_LDFLAGS="$with_libiptc_libs"
        AC_SUBST(BUILD_WITH_LIBIPTC_CPPFLAGS)
        AC_SUBST(BUILD_WITH_LIBIPTC_LDFLAGS)
 fi
-if test "x$with_own_libiptc" = "xyes"
-then
-       AC_DEFINE(OWN_LIBIPTC, 1, [Define to 1 if we use the shipped iptc library.])
-fi
-CPPFLAGS="$SAVE_CPPFLAGS"
-LDFLAGS="$SAVE_LDFLAGS"
 # }}}
 
 # --with-java {{{
@@ -1652,31 +1727,31 @@ then
        if test -d "$with_java_home"
        then
                AC_MSG_CHECKING([for jni.h])
-               TMPDIR=`find "$with_java_home" -name jni.h -type f -exec 'dirname' '{}' ';' | head -n 1`
-               if test "x$TMPDIR" != "x"
+               TMPVAR=`find "$with_java_home" -name jni.h -type f -exec 'dirname' '{}' ';' | head -n 1`
+               if test "x$TMPVAR" != "x"
                then
-                       AC_MSG_RESULT([found in $TMPDIR])
-                       JAVA_CPPFLAGS="$JAVA_CPPFLAGS -I$TMPDIR"
+                       AC_MSG_RESULT([found in $TMPVAR])
+                       JAVA_CPPFLAGS="$JAVA_CPPFLAGS -I$TMPVAR"
                else
                        AC_MSG_RESULT([not found])
                fi
 
                AC_MSG_CHECKING([for jni_md.h])
-               TMPDIR=`find "$with_java_home" -name jni_md.h -type f -exec 'dirname' '{}' ';' | head -n 1`
-               if test "x$TMPDIR" != "x"
+               TMPVAR=`find "$with_java_home" -name jni_md.h -type f -exec 'dirname' '{}' ';' | head -n 1`
+               if test "x$TMPVAR" != "x"
                then
-                       AC_MSG_RESULT([found in $TMPDIR])
-                       JAVA_CPPFLAGS="$JAVA_CPPFLAGS -I$TMPDIR"
+                       AC_MSG_RESULT([found in $TMPVAR])
+                       JAVA_CPPFLAGS="$JAVA_CPPFLAGS -I$TMPVAR"
                else
                        AC_MSG_RESULT([not found])
                fi
 
                AC_MSG_CHECKING([for libjvm.so])
-               TMPDIR=`find "$with_java_home" -name libjvm.so -type f -exec 'dirname' '{}' ';' | head -n 1`
-               if test "x$TMPDIR" != "x"
+               TMPVAR=`find "$with_java_home" -name libjvm.so -type f -exec 'dirname' '{}' ';' | head -n 1`
+               if test "x$TMPVAR" != "x"
                then
-                       AC_MSG_RESULT([found in $TMPDIR])
-                       JAVA_LDFLAGS="$JAVA_LDFLAGS -L$TMPDIR -Wl,-rpath -Wl,$TMPDIR"
+                       AC_MSG_RESULT([found in $TMPVAR])
+                       JAVA_LDFLAGS="$JAVA_LDFLAGS -L$TMPVAR -Wl,-rpath -Wl,$TMPVAR"
                else
                        AC_MSG_RESULT([not found])
                fi
@@ -1684,10 +1759,10 @@ then
                if test "x$JAVAC" = "x"
                then
                        AC_MSG_CHECKING([for javac])
-                       TMPDIR=`find "$with_java_home" -name javac -type f | head -n 1`
-                       if test "x$TMPDIR" != "x"
+                       TMPVAR=`find "$with_java_home" -name javac -type f | head -n 1`
+                       if test "x$TMPVAR" != "x"
                        then
-                               JAVAC="$TMPDIR"
+                               JAVAC="$TMPVAR"
                                AC_MSG_RESULT([$JAVAC])
                        else
                                AC_MSG_RESULT([not found])
@@ -1696,10 +1771,10 @@ then
                if test "x$JAR" = "x"
                then
                        AC_MSG_CHECKING([for jar])
-                       TMPDIR=`find "$with_java_home" -name jar -type f | head -n 1`
-                       if test "x$TMPDIR" != "x"
+                       TMPVAR=`find "$with_java_home" -name jar -type f | head -n 1`
+                       if test "x$TMPVAR" != "x"
                        then
-                               JAR="$TMPDIR"
+                               JAR="$TMPVAR"
                                AC_MSG_RESULT([$JAR])
                        else
                                AC_MSG_RESULT([not found])
@@ -1846,6 +1921,98 @@ fi
 AM_CONDITIONAL(BUILD_WITH_LIBMEMCACHED, test "x$with_libmemcached" = "xyes")
 # }}}
 
+# --with-libmodbus {{{
+with_libmodbus_config=""
+with_libmodbus_cflags=""
+with_libmodbus_libs=""
+AC_ARG_WITH(libmodbus, [AS_HELP_STRING([--with-libmodbus@<:@=PREFIX@:>@], [Path to the modbus library.])],
+[
+       if test "x$withval" = "xno"
+       then
+               with_libmodbus="no"
+       else if test "x$withval" = "xyes"
+       then
+               with_libmodbus="use_pkgconfig"
+       else if test -d "$with_libmodbus/lib"
+       then
+               AC_MSG_NOTICE([Not checking for libmodbus: Manually configured])
+               with_libmodbus_cflags="-I$withval/include"
+               with_libmodbus_libs="-L$withval/lib -lmodbus"
+               with_libmodbus="yes"
+       fi; fi; fi
+],
+[with_libmodbus="use_pkgconfig"])
+
+# configure using pkg-config
+if test "x$with_libmodbus" = "xuse_pkgconfig"
+then
+       if test "x$PKG_CONFIG" = "x"
+       then
+               with_libmodbus="no (Don't have pkg-config)"
+       fi
+fi
+if test "x$with_libmodbus" = "xuse_pkgconfig"
+then
+       AC_MSG_NOTICE([Checking for modbus using $PKG_CONFIG])
+       $PKG_CONFIG --exists 'modbus' 2>/dev/null
+       if test $? -ne 0
+       then
+               with_libmodbus="no (pkg-config doesn't know library)"
+       fi
+fi
+if test "x$with_libmodbus" = "xuse_pkgconfig"
+then
+       with_libmodbus_cflags="`$PKG_CONFIG --cflags 'modbus'`"
+       if test $? -ne 0
+       then
+               with_libmodbus="no ($PKG_CONFIG failed)"
+       fi
+       with_libmodbus_libs="`$PKG_CONFIG --libs 'modbus'`"
+       if test $? -ne 0
+       then
+               with_libmodbus="no ($PKG_CONFIG failed)"
+       fi
+fi
+if test "x$with_libmodbus" = "xuse_pkgconfig"
+then
+       with_libmodbus="yes"
+fi
+
+# with_libmodbus_cflags and with_libmodbus_libs are set up now, let's do
+# the actual checks.
+if test "x$with_libmodbus" = "xyes"
+then
+       SAVE_CPPFLAGS="$CPPFLAGS"
+       CPPFLAGS="$CPPFLAGS $with_libmodbus_cflags"
+
+       AC_CHECK_HEADERS(modbus/modbus.h, [], [with_libmodbus="no (modbus/modbus.h not found)"])
+
+       CPPFLAGS="$SAVE_CPPFLAGS"
+fi
+if test "x$with_libmodbus" = "xyes"
+then
+       SAVE_CPPFLAGS="$CPPFLAGS"
+       SAVE_LDFLAGS="$LDFLAGS"
+
+       CPPFLAGS="$CPPFLAGS $with_libmodbus_cflags"
+       LDFLAGS="$LDFLAGS $with_libmodbus_libs"
+
+       AC_CHECK_LIB(modbus, modbus_init_tcp,
+                    [with_libmodbus="yes"],
+                    [with_libmodbus="no (symbol modbus_init_tcp not found)"])
+
+       CPPFLAGS="$SAVE_CPPFLAGS"
+       LDFLAGS="$SAVE_LDFLAGS"
+fi
+if test "x$with_libmodbus" = "xyes"
+then
+       BUILD_WITH_LIBMODBUS_CFLAGS="$with_libmodbus_cflags"
+       BUILD_WITH_LIBMODBUS_LIBS="$with_libmodbus_libs"
+       AC_SUBST(BUILD_WITH_LIBMODBUS_CFLAGS)
+       AC_SUBST(BUILD_WITH_LIBMODBUS_LIBS)
+fi
+# }}}
+
 # --with-libmysql {{{
 with_mysql_config="mysql_config"
 with_mysql_cflags=""
@@ -1903,7 +2070,7 @@ then
 fi
 if test "x$with_libmysql" = "xyes"
 then
-       with_mysql_libs=`$with_mysql_config --libs 2>/dev/null`
+       with_mysql_libs=`$with_mysql_config --libs_r 2>/dev/null`
        mysql_config_status=$?
 
        if test $mysql_config_status -ne 0
@@ -1986,35 +2153,34 @@ then
 #include <asm/types.h>
 #include <sys/socket.h>])
 
-       AC_COMPILE_IFELSE(
-[#include <stdio.h>
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+                           [[[
+                            #include <stdio.h>
+                            #include <sys/types.h>
+                            #include <asm/types.h>
+                            #include <sys/socket.h>
+                            #include <linux/netlink.h>
+                            #include <linux/rtnetlink.h>
+                            ]]], [[[
+                                int retval = TCA_STATS2;
+                                return (retval);
+                                ]]]
+                            )],
+                            [AC_DEFINE([HAVE_TCA_STATS2], [1], [True if the enum-member TCA_STATS2 exists])])
+
+       AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+[[[#include <stdio.h>
 #include <sys/types.h>
 #include <asm/types.h>
 #include <sys/socket.h>
 #include <linux/netlink.h>
 #include <linux/rtnetlink.h>
-
-int main (void)
-{
-       int retval = TCA_STATS2;
-       return (retval);
-}],
-       [AC_DEFINE([HAVE_TCA_STATS2], 1, [True if the enum-member TCA_STATS2 exists])]
-       []);
-
-       AC_COMPILE_IFELSE(
-[#include <stdio.h>
-#include <sys/types.h>
-#include <asm/types.h>
-#include <sys/socket.h>
-#include <linux/netlink.h>
-#include <linux/rtnetlink.h>
-
+]]], [[[
 int main (void)
 {
        int retval = TCA_STATS;
        return (retval);
-}],
+}]]])],
        [AC_DEFINE([HAVE_TCA_STATS], 1, [True if the enum-member TCA_STATS exists])]
        []);
 
@@ -2029,6 +2195,73 @@ then
 fi
 if test "x$with_libnetlink" = "xyes"
 then
+       SAVE_CFLAGS="$CFLAGS"
+       CFLAGS="$CFLAGS $with_libnetlink_cflags"
+
+       AC_CACHE_CHECK(
+               [if function 'rtnl_dump_filter' expects five arguments],
+               [c_cv_rtnl_dump_filter_five_args],
+               AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+AC_INCLUDES_DEFAULT
+#include <asm/types.h>
+#include <sys/socket.h>
+#if HAVE_LIBNETLINK_H
+# include <libnetlink.h>
+#elif HAVE_IPROUTE_LIBNETLINK_H
+# include <iproute/libnetlink.h>
+#elif HAVE_LINUX_LIBNETLINK_H
+# include <linux/libnetlink.h>
+#endif
+                               ]], [[[
+if (rtnl_dump_filter(NULL, NULL, NULL, NULL, NULL))
+       return 1;
+return 0;
+                               ]]]
+                       )],
+                       [c_cv_rtnl_dump_filter_five_args="yes"],
+                       [c_cv_rtnl_dump_filter_five_args="no"]
+               )
+       )
+
+       AC_CACHE_CHECK(
+               [if function 'rtnl_dump_filter' expects three arguments],
+               [c_cv_rtnl_dump_filter_three_args],
+               AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+                               [[
+AC_INCLUDES_DEFAULT
+#include <asm/types.h>
+#include <sys/socket.h>
+#if HAVE_LIBNETLINK_H
+# include <libnetlink.h>
+#elif HAVE_IPROUTE_LIBNETLINK_H
+# include <iproute/libnetlink.h>
+#elif HAVE_LINUX_LIBNETLINK_H
+# include <linux/libnetlink.h>
+#endif
+                               ]], [[[
+if (rtnl_dump_filter(NULL, NULL, NULL))
+       return 1;
+return 0;
+                               ]]]
+                       )],
+                       [c_cv_rtnl_dump_filter_three_args="yes"],
+                       [c_cv_rtnl_dump_filter_three_args="no"]
+               )
+       )
+
+       CFLAGS="$SAVE_CFLAGS"
+
+       if test "x$c_cv_rtnl_dump_filter_five_args" = "xyes"
+       then
+               AC_DEFINE(RTNL_DUMP_FILTER_FIVE_ARGS, 1,
+                               [Define to 1 if function 'rtnl_dump_filter' expects five arguments.])
+       fi
+       if test "x$c_cv_rtnl_dump_filter_three_args" = "xyes"
+       then
+               AC_DEFINE(RTNL_DUMP_FILTER_THREE_ARGS, 1,
+                               [Define to 1 if function 'rtnl_dump_filter' expects three arguments.])
+       fi
+
        BUILD_WITH_LIBNETLINK_CFLAGS="$with_libnetlink_cflags"
        BUILD_WITH_LIBNETLINK_LIBS="$with_libnetlink_libs"
        AC_SUBST(BUILD_WITH_LIBNETLINK_CFLAGS)
@@ -2421,19 +2654,13 @@ then
 fi
 if test "x$with_libpcap" = "xyes"
 then
-       AC_CHECK_HEADERS(pcap.h,
-       [
-               AC_DEFINE(HAVE_PCAP_H, 1, [Define to 1 if you have the <pcap.h> header file.])
-       ], [with_libpcap="no (pcap.h not found)"])
+       AC_CHECK_HEADERS(pcap.h,,
+                        [with_libpcap="no (pcap.h not found)"])
 fi
 if test "x$with_libpcap" = "xyes"
 then
-       collect_libpcap=1
-else
-       collect_libpcap=0
+       AC_CHECK_HEADERS(pcap-bpf.h)
 fi
-AC_DEFINE_UNQUOTED(COLLECT_LIBPCAP, [$collect_libpcap],
-       [Wether or not to use the pcap library])
 AM_CONDITIONAL(BUILD_WITH_LIBPCAP, test "x$with_libpcap" = "xyes")
 # }}}
 
@@ -2441,7 +2668,7 @@ AM_CONDITIONAL(BUILD_WITH_LIBPCAP, test "x$with_libpcap" = "xyes")
 perl_interpreter="perl"
 AC_ARG_WITH(libperl, [AS_HELP_STRING([--with-libperl@<:@=PREFIX@:>@], [Path to libperl.])],
 [
-       if test -x "$withval"
+       if test -f "$withval" && test -x "$withval"
        then
                perl_interpreter="$withval"
                with_libperl="yes"
@@ -2485,19 +2712,19 @@ dnl ARCHFLAGS="" -> disable multi -arch on OSX (see Config_heavy.pl:fetch_string
   AC_CACHE_CHECK([for libperl],
     [c_cv_have_libperl],
     AC_LINK_IFELSE(
-      AC_LANG_PROGRAM(
-      [[
+      [AC_LANG_PROGRAM(
+      [[[
 #define PERL_NO_GET_CONTEXT
 #include <EXTERN.h>
 #include <perl.h>
 #include <XSUB.h>
-      ]],
-      [[
+      ]]],
+      [[[
        dTHX;
        load_module (PERL_LOADMOD_NOIMPORT,
                         newSVpv ("Collectd::Plugin::FooBar", 24),
                         Nullsv);
-      ]]),
+      ]]])],
       [c_cv_have_libperl="yes"],
       [c_cv_have_libperl="no"]
     )
@@ -2530,8 +2757,8 @@ then
        AC_CACHE_CHECK([if perl supports ithreads],
                [c_cv_have_perl_ithreads],
                AC_LINK_IFELSE(
-                       AC_LANG_PROGRAM(
-                       [[
+                       [AC_LANG_PROGRAM(
+                       [[[
 #include <EXTERN.h>
 #include <perl.h>
 #include <XSUB.h>
@@ -2539,8 +2766,8 @@ then
 #if !defined(USE_ITHREADS)
 # error "Perl does not support ithreads!"
 #endif /* !defined(USE_ITHREADS) */
-                       ]],
-                       [[ ]]),
+                       ]]],
+                       [[[ ]]])],
                        [c_cv_have_perl_ithreads="yes"],
                        [c_cv_have_perl_ithreads="no"]
                )
@@ -2567,19 +2794,19 @@ then
        AC_CACHE_CHECK([for broken Perl_load_module()],
                [c_cv_have_broken_perl_load_module],
                AC_LINK_IFELSE(
-                       AC_LANG_PROGRAM(
-                       [[
+                       [AC_LANG_PROGRAM(
+                       [[[
 #define PERL_NO_GET_CONTEXT
 #include <EXTERN.h>
 #include <perl.h>
 #include <XSUB.h>
-                       ]],
-                       [[
+                       ]]],
+                       [[[
                         dTHX;
                         load_module (PERL_LOADMOD_NOIMPORT,
                             newSVpv ("Collectd::Plugin::FooBar", 24),
                             Nullsv);
-                       ]]),
+                       ]]])],
                        [c_cv_have_broken_perl_load_module="no"],
                        [c_cv_have_broken_perl_load_module="yes"]
                )
@@ -3207,8 +3434,8 @@ then
   if $PKG_CONFIG --exists tokyotyrant
   then
     with_libtokyotyrant_cppflags="$with_libtokyotyrant_cppflags `$PKG_CONFIG --cflags tokyotyrant`"
-    with_libtokyotyrant_ldflags="$with_libtokyotyrant_ldflags `pkg-config --libs-only-L tokyotyrant`"
-    with_libtokyotyrant_libs="$with_libtokyotyrant_libs `pkg-config --libs-only-l tokyotyrant`"
+    with_libtokyotyrant_ldflags="$with_libtokyotyrant_ldflags `$PKG_CONFIG --libs-only-L tokyotyrant`"
+    with_libtokyotyrant_libs="$with_libtokyotyrant_libs `$PKG_CONFIG --libs-only-l tokyotyrant`"
   fi
 fi
 
@@ -3256,7 +3483,7 @@ AM_CONDITIONAL(BUILD_WITH_LIBTOKYOTYRANT, test "x$with_libtokyotyrant" = "xyes")
 with_libupsclient_config=""
 with_libupsclient_cflags=""
 with_libupsclient_libs=""
-AC_ARG_WITH(libupsclient, [AS_HELP_STRING([--with-libupsclient@<:@=PREFIX@:>@], [Path to the Net-SNMPD library.])],
+AC_ARG_WITH(libupsclient, [AS_HELP_STRING([--with-libupsclient@<:@=PREFIX@:>@], [Path to the upsclient library.])],
 [
        if test "x$withval" = "xno"
        then
@@ -3478,6 +3705,7 @@ then
        CPPFLAGS="$CPPFLAGS $with_libyajl_cppflags"
 
        AC_CHECK_HEADERS(yajl/yajl_parse.h, [with_libyajl="yes"], [with_libyajl="no (yajl/yajl_parse.h not found)"])
+       AC_CHECK_HEADERS(yajl/yajl_version.h)
 
        CPPFLAGS="$SAVE_CPPFLAGS"
 fi
@@ -3515,7 +3743,7 @@ with_libvirt_cflags=""
 with_libvirt_ldflags=""
 if test "x$PKG_CONFIG" != "x"
 then
-       pkg-config --exists 'libxml-2.0' 2>/dev/null
+       $PKG_CONFIG --exists 'libxml-2.0' 2>/dev/null
        if test "$?" = "0"
        then
                with_libxml2="yes"
@@ -3523,7 +3751,7 @@ then
                with_libxml2="no (pkg-config doesn't know library)"
        fi
 
-       pkg-config --exists libvirt 2>/dev/null
+       $PKG_CONFIG --exists libvirt 2>/dev/null
        if test "$?" = "0"
        then
                with_libvirt="yes"
@@ -3533,12 +3761,12 @@ then
 fi
 if test "x$with_libxml2" = "xyes"
 then
-       with_libxml2_cflags="`pkg-config --cflags libxml-2.0`"
+       with_libxml2_cflags="`$PKG_CONFIG --cflags libxml-2.0`"
        if test $? -ne 0
        then
                with_libxml2="no"
        fi
-       with_libxml2_ldflags="`pkg-config --libs libxml-2.0`"
+       with_libxml2_ldflags="`$PKG_CONFIG --libs libxml-2.0`"
        if test $? -ne 0
        then
                with_libxml2="no"
@@ -3578,12 +3806,12 @@ if test "x$with_libxml2" = "xyes"; then
 fi
 if test "x$with_libvirt" = "xyes"
 then
-       with_libvirt_cflags="`pkg-config --cflags libvirt`"
+       with_libvirt_cflags="`$PKG_CONFIG --cflags libvirt`"
        if test $? -ne 0
        then
                with_libvirt="no"
        fi
-       with_libvirt_ldflags="`pkg-config --libs libvirt`"
+       with_libvirt_ldflags="`$PKG_CONFIG --libs libvirt`"
        if test $? -ne 0
        then
                with_libvirt="no"
@@ -3789,7 +4017,7 @@ AC_DEFUN(
             enable_plugin="yes"
             force="yes"
      else
-            enable_plugin="no"
+            enable_plugin="no (disabled on command line)"
      fi; fi
     ],
     [
@@ -3899,7 +4127,7 @@ then
        plugin_vserver="yes"
        plugin_wireless="yes"
 
-       if test "x$have_net_ip_vs_h" = "xyes" -o "x$have_ip_vs_h" = "xyes"
+       if test "x$have_linux_ip_vs_h" = "xyes" || test "x$have_net_ip_vs_h" = "xyes" || test "x$have_ip_vs_h" = "xyes"
        then
                plugin_ipvs="yes"
        fi
@@ -4171,6 +4399,7 @@ AC_PLUGIN([mbmon],       [yes],                [Query mbmond])
 AC_PLUGIN([memcachec],   [$with_libmemcached], [memcachec statistics])
 AC_PLUGIN([memcached],   [yes],                [memcached statistics])
 AC_PLUGIN([memory],      [$plugin_memory],     [Memory usage])
+AC_PLUGIN([modbus],      [$with_libmodbus],    [Modbus plugin])
 AC_PLUGIN([multimeter],  [$plugin_multimeter], [Read multimeter values])
 AC_PLUGIN([mysql],       [$with_libmysql],     [MySQL statistics])
 AC_PLUGIN([netapp],      [$with_libnetapp],    [NetApp plugin])
@@ -4187,6 +4416,8 @@ AC_PLUGIN([onewire],     [$with_libowcapi],    [OneWire sensor statistics])
 AC_PLUGIN([openvpn],     [yes],                [OpenVPN client statistics])
 AC_PLUGIN([oracle],      [$with_oracle],       [Oracle plugin])
 AC_PLUGIN([perl],        [$plugin_perl],       [Embed a Perl interpreter])
+# FIXME: Check for libevent, too.
+AC_PLUGIN([pinba],       [$have_protoc_c],     [Pinba statistics])
 AC_PLUGIN([ping],        [$with_liboping],     [Network latency statistics])
 AC_PLUGIN([postgresql],  [$with_libpq],        [PostgreSQL database statistics])
 AC_PLUGIN([powerdns],    [yes],                [PowerDNS statistics])
@@ -4306,11 +4537,16 @@ AC_SUBST(LOAD_PLUGIN_CSV)
 
 dnl ip_vs.h
 if test "x$ac_system" = "xLinux" \
-       && test "x$have_net_ip_vs_h$have_ip_vs_h" = "xnono"
+       && test "x$have_linux_ip_vs_h$have_net_ip_vs_h$have_ip_vs_h" = "xnonono"
 then
        enable_ipvs="$enable_ipvs (ip_vs.h not found)"
 fi
 
+if test "x$ip_vs_h_needs_kernel_cflags" = "xyes"
+then
+       enable_ipvs="$enable_ipvs (needs $KERNEL_CFLAGS)"
+fi
+
 dnl Perl bindings
 AC_ARG_WITH(perl-bindings, [AS_HELP_STRING([--with-perl-bindings@<:@=OPTIONS@:>@], [Options passed to "perl Makefile.PL".])],
 [
@@ -4366,11 +4602,6 @@ then
        with_librrd="yes (warning: librrd is not thread-safe)"
 fi
 
-if test "x$with_libiptc" = "xyes" -a "x$with_own_libiptc" = "xyes"
-then
-       with_libiptc="yes (shipped version)"
-fi
-
 if test "x$with_libperl" = "xyes"
 then
        with_libperl="yes (version `$perl_interpreter -MConfig -e 'print $Config{version};'`)"
@@ -4404,6 +4635,7 @@ Configuration:
     libkstat  . . . . . . $with_kstat
     libkvm  . . . . . . . $with_libkvm
     libmemcached  . . . . $with_libmemcached
+    libmodbus . . . . . . $with_libmodbus
     libmysql  . . . . . . $with_libmysql
     libnetapp . . . . . . $with_libnetapp
     libnetlink  . . . . . $with_libnetlink
@@ -4427,6 +4659,8 @@ Configuration:
     libxml2 . . . . . . . $with_libxml2
     libxmms . . . . . . . $with_libxmms
     libyajl . . . . . . . $with_libyajl
+    libevent  . . . . . . $with_libevent
+    protobuf-c  . . . . . $have_protoc_c
     oracle  . . . . . . . $with_oracle
     python  . . . . . . . $with_python
 
@@ -4482,6 +4716,7 @@ Configuration:
     memcachec . . . . . . $enable_memcachec
     memcached . . . . . . $enable_memcached
     memory  . . . . . . . $enable_memory
+    modbus  . . . . . . . $enable_modbus
     multimeter  . . . . . $enable_multimeter
     mysql . . . . . . . . $enable_mysql
     netapp  . . . . . . . $enable_netapp
@@ -4498,6 +4733,7 @@ Configuration:
     openvpn . . . . . . . $enable_openvpn
     oracle  . . . . . . . $enable_oracle
     perl  . . . . . . . . $enable_perl
+    pinba . . . . . . . . $enable_pinba
     ping  . . . . . . . . $enable_ping
     postgresql  . . . . . $enable_postgresql
     powerdns  . . . . . . $enable_powerdns