diff --git a/Makefile.in b/Makefile.in
index 5a7e4c095..5ac5515ac 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -353,7 +353,7 @@ installman: iverilog-vpi.man installdirs
 installpdf: iverilog-vpi.pdf installdirs
 	$(INSTALL_DATA) iverilog-vpi.pdf "$(DESTDIR)$(prefix)/iverilog-vpi$(suffix).pdf"
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./ivl@EXEEXT@ "$(DESTDIR)$(libdir)/ivl$(suffix)/ivl@EXEEXT@"
 	$(INSTALL_DATA) $(srcdir)/constants.vams "$(DESTDIR)$(libdir)/ivl$(suffix)/include/constants.vams"
 	$(INSTALL_DATA) $(srcdir)/disciplines.vams "$(DESTDIR)$(libdir)/ivl$(suffix)/include/disciplines.vams"
diff --git a/cadpli/Makefile.in b/cadpli/Makefile.in
index 44c52b81b..9c20daa00 100644
--- a/cadpli/Makefile.in
+++ b/cadpli/Makefile.in
@@ -83,7 +83,7 @@ install: all installdirs installfiles
 
 F = ./cadpli.vpl
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./cadpli.vpl "$(DESTDIR)$(vpidir)/cadpli.vpl"
 
 installdirs: $(srcdir)/../mkinstalldirs
diff --git a/driver-vpi/Makefile.in b/driver-vpi/Makefile.in
index 25e4ff1b6..74263b209 100644
--- a/driver-vpi/Makefile.in
+++ b/driver-vpi/Makefile.in
@@ -98,7 +98,7 @@ install: all installdirs installfiles
 
 F = ./iverilog-vpi@EXEEXT@
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./iverilog-vpi@EXEEXT@ "$(bindir)/iverilog-vpi$(suffix)@EXEEXT@"
 ifeq (@WIN32@,yes)
 ifneq ($(HOSTCC),$(CC))
diff --git a/driver/Makefile.in b/driver/Makefile.in
index 515e17e09..4d7144c5e 100644
--- a/driver/Makefile.in
+++ b/driver/Makefile.in
@@ -138,7 +138,7 @@ installman: iverilog.man installdirs
 installpdf: iverilog.pdf installdirs
 	$(INSTALL_DATA) iverilog.pdf "$(DESTDIR)$(prefix)/iverilog$(suffix).pdf"
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./iverilog@EXEEXT@ "$(DESTDIR)$(bindir)/iverilog$(suffix)@EXEEXT@"
 
 installdirs: $(srcdir)/../mkinstalldirs
diff --git a/ivlpp/Makefile.in b/ivlpp/Makefile.in
index 1b699c063..37cf8e0ac 100644
--- a/ivlpp/Makefile.in
+++ b/ivlpp/Makefile.in
@@ -75,7 +75,7 @@ install: all installdirs installfiles
 
 F = ivlpp@EXEEXT@
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./ivlpp@EXEEXT@ "$(DESTDIR)$(libdir)/ivl$(suffix)/ivlpp@EXEEXT@"
 
 installdirs: $(srcdir)/../mkinstalldirs
diff --git a/libveriuser/Makefile.in b/libveriuser/Makefile.in
index 32feff66b..09c982268 100644
--- a/libveriuser/Makefile.in
+++ b/libveriuser/Makefile.in
@@ -107,7 +107,7 @@ install:: all installdirs installfiles
 
 F = ./libveriuser.a
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_DATA) ./libveriuser.a "$(DESTDIR)$(libdir)/libveriuser$(suffix).a"
 
 installdirs: $(srcdir)/../mkinstalldirs
diff --git a/tgt-blif/Makefile.in b/tgt-blif/Makefile.in
index 0f9db00b3..ecb1967f8 100644
--- a/tgt-blif/Makefile.in
+++ b/tgt-blif/Makefile.in
@@ -89,7 +89,7 @@ F = ./blif.tgt \
 	$(srcdir)/blif.conf \
 	$(srcdir)/blif-s.conf
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./blif.tgt "$(DESTDIR)$(libdir)/ivl$(suffix)/blif.tgt"
 	$(INSTALL_DATA) $(srcdir)/blif.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/blif.conf"
 	$(INSTALL_DATA) $(srcdir)/blif-s.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/blif-s.conf"
diff --git a/tgt-fpga/Makefile.in b/tgt-fpga/Makefile.in
index 6170d4c28..f4aff0205 100644
--- a/tgt-fpga/Makefile.in
+++ b/tgt-fpga/Makefile.in
@@ -114,7 +114,7 @@ installman: $(srcdir)/iverilog-fpga.man installdirs
 installpdf: iverilog-fpga.pdf installdirs
 	$(INSTALL_DATA) iverilog-fpga.pdf "$(DESTDIR)$(prefix)/iverilog-fpga$(suffix).pdf"
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./fpga.tgt "$(DESTDIR)$(libdir)/ivl$(suffix)/fpga.tgt"
 	$(INSTALL_DATA) $(srcdir)/fpga.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/fpga.conf"
 	$(INSTALL_DATA) $(srcdir)/fpga-s.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/fpga-s.conf"
diff --git a/tgt-null/Makefile.in b/tgt-null/Makefile.in
index 3a1c6a529..90ffcf8bf 100644
--- a/tgt-null/Makefile.in
+++ b/tgt-null/Makefile.in
@@ -87,7 +87,7 @@ F = ./null.tgt \
 	$(srcdir)/null.conf \
 	$(srcdir)/null-s.conf
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./null.tgt "$(DESTDIR)$(libdir)/ivl$(suffix)/null.tgt"
 	$(INSTALL_DATA) $(srcdir)/null.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/null.conf"
 	$(INSTALL_DATA) $(srcdir)/null-s.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/null-s.conf"
diff --git a/tgt-pal/Makefile.in b/tgt-pal/Makefile.in
index 56f2114d9..2f47e7f8b 100644
--- a/tgt-pal/Makefile.in
+++ b/tgt-pal/Makefile.in
@@ -84,7 +84,7 @@ install: all installdirs installfiles
 
 F = ./pal.tgt
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./pal.tgt "$(DESTDIR)$(libdir)/ivl/pal.tgt"
 
 installdirs: $(srcdir)/../mkinstalldirs
diff --git a/tgt-pcb/Makefile.in b/tgt-pcb/Makefile.in
index 8aa0fbc8f..a5f9b7d5b 100644
--- a/tgt-pcb/Makefile.in
+++ b/tgt-pcb/Makefile.in
@@ -111,7 +111,7 @@ F = ./pcb.tgt \
 	$(srcdir)/pcb.conf \
 	$(srcdir)/pcb-s.conf
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./pcb.tgt "$(DESTDIR)$(libdir)/ivl$(suffix)/pcb.tgt"
 	$(INSTALL_DATA) $(srcdir)/pcb.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/pcb.conf"
 	$(INSTALL_DATA) $(srcdir)/pcb-s.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/pcb-s.conf"
diff --git a/tgt-sizer/Makefile.in b/tgt-sizer/Makefile.in
index 0da8f3f3b..ab21f6e0b 100644
--- a/tgt-sizer/Makefile.in
+++ b/tgt-sizer/Makefile.in
@@ -87,7 +87,7 @@ F = ./sizer.tgt \
 	$(srcdir)/sizer.conf \
 	$(srcdir)/sizer-s.conf
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./sizer.tgt "$(DESTDIR)$(libdir)/ivl$(suffix)/sizer.tgt"
 	$(INSTALL_DATA) $(srcdir)/sizer.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/sizer.conf"
 	$(INSTALL_DATA) $(srcdir)/sizer-s.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/sizer-s.conf"
diff --git a/tgt-stub/Makefile.in b/tgt-stub/Makefile.in
index 933407001..57ee8cf36 100644
--- a/tgt-stub/Makefile.in
+++ b/tgt-stub/Makefile.in
@@ -88,7 +88,7 @@ F = ./stub.tgt \
 	$(srcdir)/stub.conf \
 	$(srcdir)/stub-s.conf
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./stub.tgt "$(DESTDIR)$(libdir)/ivl$(suffix)/stub.tgt"
 	$(INSTALL_DATA) $(srcdir)/stub.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/stub.conf"
 	$(INSTALL_DATA) $(srcdir)/stub-s.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/stub-s.conf"
diff --git a/tgt-verilog/Makefile.in b/tgt-verilog/Makefile.in
index d1498ed17..cd32f1f08 100644
--- a/tgt-verilog/Makefile.in
+++ b/tgt-verilog/Makefile.in
@@ -85,7 +85,7 @@ install: all installdirs installfiles
 F = ./verilog.tgt \
 	$(srcdir)/vpi_user.h
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./verilog.tgt "$(DESTDIR)$(libdir)/ivl/verilog.tgt"
 	$(INSTALL_DATA) $(srcdir)/vpi_user.h "$(DESTDIR)$(includedir)/vpi_user.h"
 
diff --git a/tgt-vhdl/Makefile.in b/tgt-vhdl/Makefile.in
index 3c7fdb303..844ba92c5 100644
--- a/tgt-vhdl/Makefile.in
+++ b/tgt-vhdl/Makefile.in
@@ -96,7 +96,7 @@ F = ./vhdl.tgt \
 	$(srcdir)/vhdl.conf \
 	$(srcdir)/vhdl-s.conf
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./vhdl.tgt "$(DESTDIR)$(libdir)/ivl$(suffix)/vhdl.tgt"
 	$(INSTALL_DATA) $(srcdir)/vhdl.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/vhdl.conf"
 	$(INSTALL_DATA) $(srcdir)/vhdl-s.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/vhdl-s.conf"
diff --git a/tgt-vlog95/Makefile.in b/tgt-vlog95/Makefile.in
index 59239b174..4d936c900 100644
--- a/tgt-vlog95/Makefile.in
+++ b/tgt-vlog95/Makefile.in
@@ -87,7 +87,7 @@ F = ./vlog95.tgt \
 	$(srcdir)/vlog95.conf \
 	$(srcdir)/vlog95-s.conf
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./vlog95.tgt "$(DESTDIR)$(libdir)/ivl$(suffix)/vlog95.tgt"
 	$(INSTALL_DATA) $(srcdir)/vlog95.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/vlog95.conf"
 	$(INSTALL_DATA) $(srcdir)/vlog95-s.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/vlog95-s.conf"
diff --git a/tgt-vvp/Makefile.in b/tgt-vvp/Makefile.in
index eb827d174..e1ae809e6 100644
--- a/tgt-vvp/Makefile.in
+++ b/tgt-vvp/Makefile.in
@@ -110,7 +110,7 @@ F = ./vvp.tgt \
 	./vvp.conf \
 	./vvp-s.conf
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./vvp.tgt "$(DESTDIR)$(libdir)/ivl$(suffix)/vvp.tgt"
 	$(INSTALL_DATA) ./vvp.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/vvp.conf"
 	$(INSTALL_DATA) ./vvp-s.conf "$(DESTDIR)$(libdir)/ivl$(suffix)/vvp-s.conf"
diff --git a/vhdlpp/Makefile.in b/vhdlpp/Makefile.in
index bf4539443..53ae140ae 100644
--- a/vhdlpp/Makefile.in
+++ b/vhdlpp/Makefile.in
@@ -131,7 +131,7 @@ install: all installdirs installfiles
 
 F = vhdlpp@EXEEXT@
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./vhdlpp@EXEEXT@ "$(DESTDIR)$(libdir)/ivl$(suffix)/vhdlpp@EXEEXT@"
 
 installdirs: $(srcdir)/../mkinstalldirs
diff --git a/vpi/Makefile.in b/vpi/Makefile.in
index b85b1016f..b08ba4244 100644
--- a/vpi/Makefile.in
+++ b/vpi/Makefile.in
@@ -198,7 +198,7 @@ F = ./libvpi.a \
 	./vhdl_textio.vpi \
 	./vpi_debug.vpi
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_DATA) ./libvpi.a "$(DESTDIR)$(libdir)/libvpi$(suffix).a"
 	$(INSTALL_PROGRAM) ./system.vpi "$(DESTDIR)$(vpidir)/system.vpi"
 	$(INSTALL_PROGRAM) ./va_math.vpi "$(DESTDIR)$(vpidir)/va_math.vpi"
diff --git a/vvp/Makefile.in b/vvp/Makefile.in
index 64759e2e7..bf04bd5b7 100644
--- a/vvp/Makefile.in
+++ b/vvp/Makefile.in
@@ -192,7 +192,7 @@ installman: vvp.man installdirs
 installpdf: vvp.pdf installdirs
 	$(INSTALL_DATA) vvp.pdf "$(DESTDIR)$(prefix)/vvp$(suffix).pdf"
 
-installfiles: $(F) installdirs
+installfiles: $(F) | installdirs
 	$(INSTALL_PROGRAM) ./vvp@EXEEXT@ "$(DESTDIR)$(bindir)/vvp$(suffix)@EXEEXT@"
 
 installdirs: $(srcdir)/../mkinstalldirs