common.mk: link DTRACE_OBJ

* common.mk (COMMONOBJS): include $(DTRACE_OBJ) which is necessary
  for $(DTRACE_DEPENDENT_OBJS).

* configure.in (RUBY_DTRACE_POSTPROCESS): separate whether dtrace
  is needed to genearate probes.o and whether it modifies input
  object files.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49451 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Makefile.in

@@ -213,7 +213,7 @@ all:
 miniruby$(EXEEXT):
 		@-if test -f $@; then $(MV) -f $@ $@.old; $(RM) $@.old; fi
 		$(ECHO) linking $@
-		$(Q) $(PURIFY) $(CC) $(LDFLAGS) $(XLDFLAGS) $(NORMALMAINOBJ) $(MINIOBJS) $(COMMONOBJS) $(INITOBJS) $(DTRACE_OBJ) $(MAINLIBS) $(LIBS) $(OUTFLAG)$@
+		$(Q) $(PURIFY) $(CC) $(LDFLAGS) $(XLDFLAGS) $(NORMALMAINOBJ) $(MINIOBJS) $(COMMONOBJS) $(INITOBJS) $(MAINLIBS) $(LIBS) $(OUTFLAG)$@
 
 $(PROGRAM):
 		@$(RM) $@
@@ -236,7 +236,7 @@ $(LIBRUBY_A):
 $(LIBRUBY_SO):
 		@-$(PRE_LIBRUBY_UPDATE)
 		$(ECHO) linking shared-library $@
-		$(Q) $(LDSHARED) $(DLDFLAGS) $(OBJS) $(DLDOBJS) $(DTRACE_OBJ) $(SOLIBS) $(EXTSOLIBS) $(OUTFLAG)$@
+		$(Q) $(LDSHARED) $(DLDFLAGS) $(OBJS) $(DLDOBJS) $(SOLIBS) $(EXTSOLIBS) $(OUTFLAG)$@
 		-$(Q) $(OBJCOPY) -w -L '$(SYMBOL_PREFIX)Init_*' -L '$(SYMBOL_PREFIX)*_threadptr_*' $@
 		$(Q) $(POSTLINK)
 		@-$(MINIRUBY) -e 'ARGV.each{|link| File.delete link rescue nil; \

common.mk

@@ -101,6 +101,7 @@ COMMONOBJS    = array.$(OBJEXT) \
 		vm_trace.$(OBJEXT) \
 		thread.$(OBJEXT) \
 		cont.$(OBJEXT) \
+		$(DTRACE_OBJ) \
 		$(BUILTIN_ENCOBJS) \
 		$(BUILTIN_TRANSOBJS) \
 		$(MISSING)
@@ -192,7 +193,7 @@ prog: program wprogram
 
 $(PREP): $(MKFILES)
 
-miniruby$(EXEEXT): config.status $(ALLOBJS) $(ARCHFILE) $(DTRACE_OBJ)
+miniruby$(EXEEXT): config.status $(ALLOBJS) $(ARCHFILE)
 
 objs: $(ALLOBJS)
 
@@ -218,7 +219,7 @@ mini: PHONY miniruby$(EXEEXT)
 
 $(PROGRAM) $(WPROGRAM): $(LIBRUBY) $(MAINOBJ) $(OBJS) $(EXTOBJS) $(SETUP) $(PREP)
 
-$(LIBRUBY_A):	$(OBJS) $(MAINOBJ) $(DTRACE_OBJ) $(DTRACE_GLOMMED_OBJ) $(INITOBJS) $(ARCHFILE)
+$(LIBRUBY_A):	$(LIBRUBY_A_OBJS) $(MAINOBJ) $(INITOBJS) $(ARCHFILE)
 
 $(LIBRUBY_SO):	$(OBJS) $(DLDOBJS) $(LIBRUBY_A) $(PREP) $(LIBRUBY_SO_UPDATE) $(BUILTIN_ENCOBJS)
 

configure.in

@@ -644,10 +644,10 @@ _PROBES
 _CONF
     $CC $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c &&
     cp -p conftest.o conftest.oo &&
-    $DTRACE -G -s conftest_provider.d conftest.o 2>/dev/null &&
-    ! cmp -b conftest.o conftest.oo
+    $DTRACE -G -s conftest_provider.d conftest.o 2>/dev/null
   }; then
     rb_cv_prog_dtrace_g=yes
+    cmp -b conftest.o conftest.oo || rb_cv_prog_dtrace_g=rebuild
   else
     rb_cv_prog_dtrace_g=no
   fi
@@ -3608,8 +3608,10 @@ if test "${enable_dtrace}" = "yes"; then
             AC_MSG_ERROR([--enable-dtrace, however, USDT is not available])
         fi
         RUBY_DTRACE_POSTPROCESS()
-        if test "$rb_cv_prog_dtrace_g" = 'yes'; then
+        if test "$rb_cv_prog_dtrace_g" != 'no'; then
             DTRACE_OBJ='probes.$(OBJEXT)'
+        fi
+        if test "$rb_cv_prog_dtrace_g" = 'rebuild'; then
             DTRACE_GLOMMED_OBJ='ruby-glommed.$(OBJEXT)'
             LIBRUBY_A_OBJS='$(DTRACE_GLOMMED_OBJ)'
         fi