diff --git a/cadpli/Makefile.in b/cadpli/Makefile.in
index f10004601..c3aaf48ef 100644
--- a/cadpli/Makefile.in
+++ b/cadpli/Makefile.in
@@ -71,7 +71,7 @@ Makefile: $(srcdir)/Makefile.in ../config.status
 dep:
 	mkdir dep
 
-%.o: %.c
+%.o: %.c | dep
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c $<
 	mv $*.d dep
 
diff --git a/driver/Makefile.in b/driver/Makefile.in
index 3e8f40b04..38ab633a9 100644
--- a/driver/Makefile.in
+++ b/driver/Makefile.in
@@ -92,11 +92,11 @@ cflexor.c: $(srcdir)/cflexor.lex
 cfparse%c cfparse%h: $(srcdir)/cfparse%y
 	$(YACC) --verbose -t -p cf -d -o cfparse.c $<
 
-%.o: %.c
+%.o: %.c | dep
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
-main.o: main.c globals.h $(srcdir)/../version_base.h ../version_tag.h Makefile
+main.o: main.c globals.h $(srcdir)/../version_base.h ../version_tag.h Makefile | dep
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c -DIVL_ROOT='"@libdir@/ivl$(suffix)"' -DIVL_SUFFIX='"$(suffix)"' -DIVL_INC='"@includedir@"' -DIVL_LIB='"@libdir@"' -DDLLIB='"@DLLIB@"' -DIVL_INCLUDE_INSTALL_DIR="\"$(realpath $(DESTDIR)/$(includedir))\"" $(srcdir)/main.c
 	mv $*.d dep
 
diff --git a/libveriuser/Makefile.in b/libveriuser/Makefile.in
index 2b27ad265..e2e83ed92 100644
--- a/libveriuser/Makefile.in
+++ b/libveriuser/Makefile.in
@@ -101,7 +101,7 @@ libveriuser.a: libveriuser.o
 	$(AR) cvq $@ libveriuser.o
 	$(RANLIB) $@
 
-%.o: %.c config.h
+%.o: %.c config.h | dep
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
diff --git a/tgt-blif/Makefile.in b/tgt-blif/Makefile.in
index aebe254ec..fe09e9c4b 100644
--- a/tgt-blif/Makefile.in
+++ b/tgt-blif/Makefile.in
@@ -70,7 +70,7 @@ Makefile: $(srcdir)/Makefile.in ../config.status
 dep:
 	mkdir dep
 
-%.o: %.cc
+%.o: %.cc | dep
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
diff --git a/tgt-fpga/Makefile.in b/tgt-fpga/Makefile.in
index 6fcb17782..0fa9c6738 100644
--- a/tgt-fpga/Makefile.in
+++ b/tgt-fpga/Makefile.in
@@ -73,7 +73,7 @@ Makefile: $(srcdir)/Makefile.in ../config.status
 dep:
 	mkdir dep
 
-%.o: %.c
+%.o: %.c | dep
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
diff --git a/tgt-null/Makefile.in b/tgt-null/Makefile.in
index b488cab51..5b6e4c213 100644
--- a/tgt-null/Makefile.in
+++ b/tgt-null/Makefile.in
@@ -68,7 +68,7 @@ Makefile: $(srcdir)/Makefile.in ../config.status
 dep:
 	mkdir dep
 
-%.o: %.c
+%.o: %.c | dep
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
diff --git a/tgt-pal/Makefile.in b/tgt-pal/Makefile.in
index 4f04cb2e0..827ca71ff 100644
--- a/tgt-pal/Makefile.in
+++ b/tgt-pal/Makefile.in
@@ -67,7 +67,7 @@ Makefile: $(srcdir)/Makefile.in ../config.status
 dep:
 	mkdir dep
 
-%.o: %.c
+%.o: %.c | dep
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
diff --git a/tgt-pcb/Makefile.in b/tgt-pcb/Makefile.in
index bb997d85e..9f3b408e8 100644
--- a/tgt-pcb/Makefile.in
+++ b/tgt-pcb/Makefile.in
@@ -82,7 +82,7 @@ stamp-pcb_config-h: $(srcdir)/pcb_config.h.in ../config.status
 	cd ..; ./config.status --header=tgt-pcb/pcb_config.h
 pcb_config.h: stamp-pcb_config-h
 
-%.o: %.cc
+%.o: %.cc | dep
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
diff --git a/tgt-sizer/Makefile.in b/tgt-sizer/Makefile.in
index d3361a24b..98287e2f6 100644
--- a/tgt-sizer/Makefile.in
+++ b/tgt-sizer/Makefile.in
@@ -68,7 +68,7 @@ Makefile: $(srcdir)/Makefile.in ../config.status
 dep:
 	mkdir dep
 
-%.o: %.cc
+%.o: %.cc | dep
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
diff --git a/tgt-stub/Makefile.in b/tgt-stub/Makefile.in
index 9fc66f02d..3ba38f814 100644
--- a/tgt-stub/Makefile.in
+++ b/tgt-stub/Makefile.in
@@ -69,7 +69,7 @@ Makefile: $(srcdir)/Makefile.in ../config.status
 dep:
 	mkdir dep
 
-%.o: %.c
+%.o: %.c | dep
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
diff --git a/tgt-verilog/Makefile.in b/tgt-verilog/Makefile.in
index 94029b9b9..3e35db15e 100644
--- a/tgt-verilog/Makefile.in
+++ b/tgt-verilog/Makefile.in
@@ -67,7 +67,7 @@ Makefile: $(srcdir)/Makefile.in ../config.status
 dep:
 	mkdir dep
 
-%.o: %.c
+%.o: %.c | dep
 	$(CC) $(CPPFLAGS) $(CFLAGS) -MD -c $< -o $*.o
 	mv $*.d dep
 
diff --git a/tgt-vhdl/Makefile.in b/tgt-vhdl/Makefile.in
index f6cc2acfd..0f3bc1259 100644
--- a/tgt-vhdl/Makefile.in
+++ b/tgt-vhdl/Makefile.in
@@ -72,7 +72,7 @@ Makefile: $(srcdir)/Makefile.in ../config.status
 dep:
 	mkdir dep
 
-%.o: %.cc vhdl_config.h
+%.o: %.cc vhdl_config.h | dep
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
diff --git a/tgt-vlog95/Makefile.in b/tgt-vlog95/Makefile.in
index a2073ca67..e10430152 100644
--- a/tgt-vlog95/Makefile.in
+++ b/tgt-vlog95/Makefile.in
@@ -68,7 +68,7 @@ Makefile: $(srcdir)/Makefile.in ../config.status
 dep:
 	mkdir dep
 
-%.o: %.c
+%.o: %.c | dep
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
diff --git a/tgt-vvp/Makefile.in b/tgt-vvp/Makefile.in
index 793821219..7fa1858e5 100644
--- a/tgt-vvp/Makefile.in
+++ b/tgt-vvp/Makefile.in
@@ -76,7 +76,7 @@ Makefile: $(srcdir)/Makefile.in ../config.status
 dep:
 	mkdir dep
 
-%.o: %.c vvp_config.h
+%.o: %.c vvp_config.h | dep
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
diff --git a/vpi/Makefile.in b/vpi/Makefile.in
index e4c294d18..4fdee22d6 100644
--- a/vpi/Makefile.in
+++ b/vpi/Makefile.in
@@ -123,11 +123,11 @@ Makefile: $(srcdir)/Makefile.in ../config.status
 dep:
 	mkdir dep
 
-%.o: %.c vpi_config.h
+%.o: %.c vpi_config.h | dep
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep
 
-%.o: %.cc vpi_config.h
+%.o: %.cc vpi_config.h | dep
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep