Index: tools/build/v1/gcc-tools.jam
===================================================================
RCS file: /cvsroot/boost/boost/tools/build/v1/gcc-tools.jam,v
retrieving revision 1.100
diff -u -r1.100 gcc-tools.jam
--- tools/build/v1/gcc-tools.jam	27 May 2005 17:13:17 -0000	1.100
+++ tools/build/v1/gcc-tools.jam	18 Jun 2005 16:19:27 -0000
@@ -123,6 +123,12 @@
         .GCC ?= cc ;
         .GXX ?= c++ ;
         }
+    case NetBSD :
+        {
+        flags gcc CFLAGS <threading>multi : -pthread ;
+        flags gcc LINKFLAGS <threading>multi : -lpthread ;
+        # there is no -lrt on NetBSD
+        }
     case *BSD :
         {
         flags gcc CFLAGS <threading>multi : -pthread ;
@@ -175,7 +181,11 @@
         SONAME = -Wl,-soname, ;
         flags gcc OBJCOPY_FLAGS <debug-symbols>on : "--set-section-flags .debug_str=contents,debug" ;
         }
-    case OpenBSD :
+    case DragonFly :
+        {
+        SONAME = -Wl,-soname, ;
+        }
+    case *BSD :
         {
         SONAME = -Wl,-soname, ;
         }
@@ -413,7 +423,7 @@
         LNOPT on $(<) = "" ;
     }
     # do we use sonames or not?
-    if $(DLLVERSION) && $(TARGET_TYPE) in $(SHARED_TYPES) && ( $(OS) = LINUX || $(OS) = OPENBSD ) && ! $(NO_GNU_LN)
+    if $(DLLVERSION) && $(TARGET_TYPE) in $(SHARED_TYPES) && ( $(OS) = DRAGONFLY || $(OS) = FREEBSD || $(OS) = LINUX || $(OS) = NETBSD || $(OS) = OPENBSD ) && ! $(NO_GNU_LN)
     {
         OUTTAG on $(<) = ".$(DLLVERSION)" ;
         SOTAG on $(<) = ".$(DLLVERSION)" ;
@@ -459,7 +469,7 @@
     gcc-spawn $(<) ;
     gcc-Link-action $(<) : $(>) ;
 
-    if $(DLLVERSION) && $(TARGET_TYPE) in $(SHARED_TYPES) && ( $(OS) = LINUX || $(OS) = OPENBSD ) && ! $(NO_GNU_LN)
+    if $(DLLVERSION) && $(TARGET_TYPE) in $(SHARED_TYPES) && ( $(OS) = DRAGONFLY || $(OS) = FREEBSD || $(OS) = LINUX || $(OS) = NETBSD || $(OS) = OPENBSD ) && ! $(NO_GNU_LN)
     {
         return "$(<[1]).$(DLLVERSION)" ;
     }