gentoo-overlay/net-libs/wvstreams/files/wvstreams-4.6.1-parallel-make.patch

--- Makefile
+++ Makefile
@@ -131,12 +131,19 @@
 # libwvstreams: stream/event handling library
 #
 TARGETS += libwvstreams.so
-TARGETS += crypto/tests/ssltest ipstreams/tests/unixtest
+TARGETS += crypto/tests/ssltest                                                                                                                             
+crypto/tests/ssltest: $(LIBWVSTREAMS)                                                                                                                       
+
+TARGETS += ipstreams/tests/unixtest
+ipstreams/tests/unixtest: $(LIBWVSTREAMS)
+
 TARGETS += crypto/tests/printcert
+crypto/tests/printcert: $(LIBWVSTREAMS)
 
 ifndef _MACOS
   ifneq ("$(with_readline)", "no")
     TARGETS += ipstreams/tests/wsd
+    ipstreams/tests/wsd: $(LIBWVSTREAMS)
     ipstreams/tests/wsd-LIBS += -lreadline
   else
     TEST_SKIP_OBJS += ipstreams/tests/wsd
@@ -179,7 +186,11 @@
 #
 ifneq ("$(with_dbus)", "no")
   TARGETS += libwvdbus.so
-  TARGETS += dbus/tests/wvdbus dbus/tests/wvdbusd
+  TARGETS += dbus/tests/wvdbus
+  dbus/tests/wvdbus: $(LIBWVDBUS)
+
+  TARGETS += dbus/tests/wvdbusd
+  dbus/tests/wvdbusd: $(LIBWVDBUS)
   TESTS += $(call tests_cc,dbus/tests)
   libwvdbus_OBJS += $(call objects,dbus)
   libwvdbus.so: $(libwvdbus_OBJS) $(LIBWVSTREAMS)
--- wvrules-posix.mk
+++ wvrules-posix.mk
@@ -85,12 +85,15 @@
 	$(AR) s $1
 endef
 
-CC: FORCE
+CC:
 	@CC="$(CC)" CFLAGS="$(CFLAGS)" CPPFLAGS="$(CPPFLAGS)" \
 	  $(WVSTREAMS)/gen-cc CC c
 
-CXX: FORCE
+CXX:
 	@CC="$(CXX)" CFLAGS="$(CXXFLAGS)" CPPFLAGS="$(CPPFLAGS)" \
 	  $(WVSTREAMS)/gen-cc CXX cc
 
+#All files must depend on the above two rules. This is a godawful hack.
+$(shell find -type f '(' -name '*.c' -o -name '*.cc' ')' ): CC CXX
+
 wvlink=$(LINK_MSG)$(WVLINK_CC) $(LDFLAGS) $($1-LDFLAGS) -o $1 $(filter %.o %.a %.so, $2) $($1-LIBS) $(XX_LIBS) $(LDLIBS) $(PRELIBS) $(LIBS)