diff --git a/glib/Makefile.am b/glib/Makefile.am
index 766f37309..953ea08b6 100644
--- a/glib/Makefile.am
+++ b/glib/Makefile.am
@@ -362,15 +362,12 @@ libglib_2_0_la_LDFLAGS = $(GLIB_LINK_FLAGS) \
 INSTALL_PROGS=
 
 if ENABLE_DTRACE
-DTCOMPILE = $(patsubst -W%,,$(LTCOMPILE))
-DTCFLAGS = $(patsubst -W%,,$(CFLAGS))
-
 glib_probes.h: glib_probes.d
 	$(AM_V_GEN) $(DTRACE) -C -h -s $< -o $@.tmp
 	@$(SED) -e "s,define STAP_HAS_SEMAPHORES 1,undef STAP_HAS_SEMAPHORES," < $@.tmp > $@ && rm -f $@.tmp
 
 glib_probes.lo: glib_probes.d
-	$(AM_V_GEN) env CC="$(DTCOMPILE)" CFLAGS="$(DTCFLAGS)" $(DTRACE) -G -s $< -o $@
+	$(AM_V_GEN) $(LIBTOOL) --mode=compile $(AM_V_lt) --tag=CC $(DTRACE) -G -s $< -o $@
 
 BUILT_SOURCES += glib_probes.h glib_probes.lo
 CLEANFILES += glib_probes.h glib_probes.h.tmp
diff --git a/gobject/Makefile.am b/gobject/Makefile.am
index a72e39cab..ba9dcc8e6 100644
--- a/gobject/Makefile.am
+++ b/gobject/Makefile.am
@@ -110,15 +110,13 @@ gobject_c_sources = \
 	gvaluetypes.c
 
 if ENABLE_DTRACE
-DTCOMPILE = $(patsubst -W%,,$(LTCOMPILE))
-DTCFLAGS = $(patsubst -W%,,$(CFLAGS))
 
 gobject_probes.h: gobject_probes.d
 	$(AM_V_GEN) $(DTRACE) -C -h -s $< -o $@.tmp
 	@$(SED) -e "s,define STAP_HAS_SEMAPHORES 1,undef STAP_HAS_SEMAPHORES," < $@.tmp > $@ && rm -f $@.tmp
 
 gobject_probes.lo: gobject_probes.d
-	$(AM_V_GEN) env CC="$(DTCOMPILE)" CFLAGS="$(DTCFLAGS)" $(DTRACE) -G -s $< -o $@
+	$(AM_V_GEN) $(LIBTOOL) --mode=compile $(AM_V_lt) --tag=CC $(DTRACE) -G -s $< -o $@
 
 BUILT_SOURCES += gobject_probes.h gobject_probes.lo
 CLEANFILES += gobject_probes.h