Fix eggdrop to compile and run under Haiku

aclocal.m4

@@ -609,6 +609,9 @@ AC_DEFUN([EGG_CHECK_MODULE_SUPPORT],
       EGG_DARWIN_BUNDLE
       EGG_APPEND_VAR(MODULE_XLIBS, $BUNDLE)
     ;;
+    Haiku)
+      WEIRD_OS="no"
+    ;;
     *)
       if test -r /mach; then
         # At this point, we're guessing this is NeXT Step. We support rld, so

doc/BUG-REPORT

@@ -68,6 +68,7 @@ DO NOT SEND HTML E-MAIL TO THE LISTS.
      ( ) Dell SVR4
      ( ) DragonFly BSD
      ( ) FreeBSD/TrueOS
+     ( ) Haiku
      ( ) HP-UX
      ( ) IRIX
      ( ) Linux

doc/COMPILE-GUIDE

@@ -1,5 +1,5 @@
 Eggdrop Compile Guide and FAQ
-Last revised: September 4, 2018
+Last revised: September 20, 2018
     _____________________________________________________________________
 
                         Eggdrop Compile Guide and FAQ
@@ -25,7 +25,8 @@ Last revised: September 4, 2018
       F. IRIX
       G. Solaris / SunOS
       H. Cygwin / Windows
-      I. Tcl Detection and Installation
+      I. Haiku
+      J. Tcl Detection and Installation
 
     Frequently Asked Questions:
       1. I get a lot of warnings.
@@ -301,31 +302,40 @@ Last revised: September 4, 2018
              cp /bin/cygz.dll 'C:/eggdrop' (if you selected compress.mod)
 
 
-    I. Tcl Detection and Installation
-        If ./configure does not correctly detect the location of your Tcl
-        library and header file, or if you experience errors related to Tcl
-        during linking, perform these steps:
+    I. Haiku
+      If you compile Tcl from source and it breaks with a thread error 
+      (and --disable-threads doesn't help), you can workaround this by
+      removing the 'pkgs/thread<VERSION>' directory.
 
-          1. Depending on what shell your using:
+      Note that on Haiku, the LIBRARY_PATH environment variable must be used
+      instead of LD_LIBRARY_PATH.
 
-            bash/ksh:
-              export LD_LIBRARY_PATH=<path to DIRECTORY containing Tcl library>:${LD_LIBRARY_PATH}
 
-            csh/tcsh/tclsh:
-              setenv LD_LIBRARY_PATH <path to DIRECTORY containing Tcl library>:${LD_LIBRARY_PATH}
+    J. Tcl Detection and Installation
+      If ./configure does not correctly detect the location of your Tcl
+      library and header file, or if you experience errors related to Tcl
+      during linking, perform these steps:
+
+        1. Depending on what shell your using:
 
-            Note that some OS's use a different environment variable to tell
-            ld where to look for a library. See the notes for your specific OS
-            above (if applicable).
+          bash/ksh:
+            export LD_LIBRARY_PATH=<path to DIRECTORY containing Tcl library>:${LD_LIBRARY_PATH}
 
-          2. Run the following command from your Eggdrop compilation directory
-             (this is all one command):
+          csh/tcsh/tclsh:
+            setenv LD_LIBRARY_PATH <path to DIRECTORY containing Tcl library>:${LD_LIBRARY_PATH}
 
-            ./configure --with-tclinc='<full path to tcl.h>'
-            --with-tcllib='<full path to Tcl library>'
+          Note that some OS's use a different environment variable to tell
+          ld where to look for a library. See the notes for your specific OS
+          above (if applicable).
+
+        2. Run the following command from your Eggdrop compilation directory
+           (this is all one command):
+
+          ./configure --with-tclinc='<full path to tcl.h>'
+          --with-tcllib='<full path to Tcl library>'
 
-          3. Continue compiling the bot as outlined in Section A., starting
-             with 'make config'.
+        3. Continue compiling the bot as outlined in Section A., starting
+           with 'make config'.
 
         If you do not have Tcl installed on your system, you can compile it in
         your /home directory. Download Tcl from Tcl's SourceForge project page

src/mod/compress.mod/compress.c

@@ -29,9 +29,12 @@
 
 #include <string.h>
 #include <errno.h>
-#include <zlib.h>
 
 #include "src/mod/module.h"
+
+#include <zlib.h> /* after src/mod/module.h because it could collide with
+		     crypto.h free_func */
+
 #include "share.mod/share.h"
 
 #ifdef HAVE_MMAP

src/mod/dns.mod/configure.ac

@@ -16,7 +16,7 @@ dns_reslib_avail="false"
 
 AC_HEADER_RESOLV
 
-for lib in '' -lresolv -lbind -lsocket
+for lib in '' -lresolv -lbind -lsocket -lnetwork
 do
   LIBS="$lib"
   AC_LINK_IFELSE([AC_LANG_PROGRAM([

src/mod/share.mod/share.c

@@ -1461,14 +1461,14 @@ static void shareout_but EGG_VARARGS_DEF(struct chanset_t *, arg1)
  */
 static void new_tbuf(char *bot)
 {
-  tandbuf **old = &tbuf, *new;
+  tandbuf *new;
 
   new = nmalloc(sizeof(tandbuf));
   strncpyz(new->bot, bot, sizeof new->bot);
   new->q = NULL;
   new->timer = now;
-  new->next = *old;
-  *old = new;
+  new->next = tbuf;
+  tbuf = new;
   putlog(LOG_BOTS, "*", "Creating resync buffer for %s", bot);
 }