--- mod-backtrace.c.dl	Thu Dec 29 11:25:29 2005
+++ mod-backtrace.c	Thu Dec 29 11:22:06 2005
@@ -13,8 +13,8 @@
  * limitations under the License.
  */
 
-#if !defined(__linux__) && !defined(__FreeBSD__)
-#error This module is currently implemented only for Linux and FreeBSD.
+#if !defined(__linux__) && !defined(__FreeBSD__) && !(defined(__SVR4) && defined(__sun))
+#error This module is currently implemented only for Linux, FreeBSD and Solaris.
 #endif
 
 /*
@@ -73,13 +73,20 @@
 #include "apr_strings.h"
 
 #include <unistd.h>
+
+
+#if defined(__linux__) && defined(__FreeBSD__)
 #include <execinfo.h>
+#elif (defined(__SVR4) && defined(__sun))
+#include <ucontext.h>
+#endif
+
 #include <fcntl.h>
 
 static pid_t real_pid;
 static const char *log_fname;
 
-static int bt_exception_hook(ap_exception_info_t *ei)
+int bt_exception_hook(ap_exception_info_t *ei)
 {
     int msg_len;
     int logfd;
@@ -135,8 +142,13 @@
                            main);/* don't you DARE put parens after "main" */
     write(logfd, buffer, msg_len);
 
+    #if defined(__linux__) || defined(__FreeBSD__)
     size = backtrace(array, sizeof array / sizeof array[0]);
     backtrace_symbols_fd(array, size, logfd);
+    #elif defined(__SVR4) && defined(__sun)
+    printstack(logfd);
+    #endif
+
     msg_len = apr_snprintf(buffer, sizeof buffer,
                            "%s end of backtrace\n",
                            msg_prefix);