diff --git a/ext/Makefile.in b/ext/Makefile.in
index dce908022..3ab83ecc3 100755
--- a/ext/Makefile.in
+++ b/ext/Makefile.in
@@ -1,11 +1,35 @@
-
+#/bin/sh
+#
+# $Source$
+# $Author$
+# $Revision$
+# $Date$
+#
+# Makefile for ext directory
+#
 BUILD_LAPACK=@build_lapack@
 BUILD_BLAS=@build_blas@
+BUILD_WITH_F2C=@build_with_f2c@
 
 LIBS = blas/libctblas.a lapack/libctlapack.a math/libctmath.a \
        recipes/librecipes.a cvode/libcvode.a tpx/libtpx.a
  
-all:  
+all: 
+ifeq ($(BUILD_WITH_F2C),1)
+	cd f2c_libs; @MAKE@
+ifeq ($(BUILD_LAPACK),1)
+	cd f2c_lapack; @MAKE@
+else
+	cd f2c_lapack; @MAKE@ clean
+endif
+ifeq ($(BUILD_BLAS),1)
+	cd f2c_blas; @MAKE@
+else
+	cd f2c_blas; @MAKE@ clean
+endif
+	cd f2c_recipes; @MAKE@
+	cd f2c_math; @MAKE@
+else
 ifeq ($(BUILD_LAPACK),1)
 	cd lapack; @MAKE@
 else
@@ -17,9 +41,10 @@ else
 	cd blas; @MAKE@ clean
 endif
 	cd recipes; @MAKE@
-	cd cvode; @MAKE@
 	cd math; @MAKE@
-	cd tpx; @MAKE@
+endif
+	cd cvode; @MAKE@
+	cd tpx;   @MAKE@
 
 clean:
 	cd lapack; @MAKE@ clean
@@ -28,6 +53,44 @@ clean:
 	cd cvode; @MAKE@ clean
 	cd math; @MAKE@ clean
 	cd tpx; @MAKE@ clean
+	(if test -d "f2c_libs" ; then  \
+            cd f2c_libs ; @MAKE@ clean ; \
+         fi)
+	(if test -d "f2c_lapack" ; then  \
+            cd f2c_lapack ; @MAKE@ clean ; \
+         fi)
+	(if test -d "f2c_blas" ; then  \
+            cd f2c_blas ; @MAKE@ clean ; \
+         fi)
+	(if test -d "f2c_math" ; then  \
+            cd f2c_math ; @MAKE@ clean ; \
+         fi)
+	(if test -d "f2c_recipes" ; then  \
+            cd f2c_recipes ; @MAKE@ clean ; \
+         fi)
 
-install:
-	@INSTALL@ -m 644 $(LIBS) @prefix@/lib
+depends:
+ifeq ($(BUILD_WITH_F2C),1)
+	(if test -d "f2c_libs" ; then  \
+            cd f2c_libs ; @MAKE@ depends ; \
+         fi)
+	(if test -d "f2c_lapack" ; then  \
+            cd f2c_lapack ; @MAKE@ depends ; \
+         fi)
+	(if test -d "f2c_blas" ; then  \
+            cd f2c_blas ; @MAKE@ depends ; \
+         fi)
+	(if test -d "f2c_math" ; then  \
+            cd f2c_math ; @MAKE@ depends ; \
+         fi)
+	(if test -d "f2c_recipes" ; then  \
+            cd f2c_recipes ; @MAKE@ depends ; \
+         fi)
+else
+	cd lapack;   @MAKE@ depends
+	cd blas;     @MAKE@ depends
+	cd recipes;  @MAKE@ depends
+	cd math;     @MAKE@ depends
+endif
+	cd cvode;    @MAKE@ depends
+	cd tpx;      @MAKE@ depends
diff --git a/ext/blas/Makefile.in b/ext/blas/Makefile.in
index 591f17f83..7fed9c677 100755
--- a/ext/blas/Makefile.in
+++ b/ext/blas/Makefile.in
@@ -65,6 +65,5 @@ $(BLASLIB):  $(OBJS)
 clean:
 	$(RM) $(OBJS) $(BLASLIB)
 
-
-
+depends:
 
diff --git a/ext/cvode/Makefile.in b/ext/cvode/Makefile.in
index 6b87bfb5d..934037046 100755
--- a/ext/cvode/Makefile.in
+++ b/ext/cvode/Makefile.in
@@ -89,5 +89,5 @@ clean:
 	$(RM)  ./libcvode.a
 	$(RM)  $(OBJS)
 
-
+depends:
 
diff --git a/ext/f2c_blas/Makefile.in b/ext/f2c_blas/Makefile.in
index 4e31e7d41..29caa4fe8 100755
--- a/ext/f2c_blas/Makefile.in
+++ b/ext/f2c_blas/Makefile.in
@@ -11,7 +11,6 @@
 .SUFFIXES :
 .SUFFIXES : .c .d .o
 
-
 # the directory where the Cantera libraries are located
 CANTERA_LIBDIR=@buildlib@
 
@@ -110,3 +109,8 @@ depends:
 
 .depends: $(DEPENDS)
 	cat *.d > .depends
+
+ifeq ($(wildcard .depends), .depends)
+include .depends
+endif
+
diff --git a/ext/f2c_libs/Makefile.in b/ext/f2c_libs/Makefile.in
index e3367bf83..89909f078 100755
--- a/ext/f2c_libs/Makefile.in
+++ b/ext/f2c_libs/Makefile.in
@@ -18,7 +18,7 @@
 #	-fPIC
 # to the CFLAGS = line below.
 
-.SUFFIXES: .c .o
+.SUFFIXES: .c .o .d
 
 # the C compiler
 CC = @CC@
@@ -28,10 +28,12 @@ CFLAGS = @CXXFLAGS@ $(CXX_OPT)
 
 # Destination f2c lib located in Cantera's build directory
 # -> Calling it ctf2c
+BUILDINCDIR=../../build/include/cantera
 F2C_LIB = @buildlib@/libctf2c.a
+F2C_H   = $(BUILDINCDIR)/f2c.h
 
 # compile, then strip unnecessary symbols
-.c.o:
+.c.o: f2c.h
 	$(CC) -c -DSkip_f2c_Undefs $(CFLAGS) $*.c
 	ld -r -x -o $*.xxx $*.o
 	mv $*.xxx $*.o
@@ -83,12 +85,16 @@ TIME =	dtime_.o etime_.o
 OFILES = $(MISC) $(POW) $(CX) $(DCX) $(REAL) $(DBL) $(INT) \
 	$(HALF) $(CMP) $(EFL) $(CHAR) $(I77) $(TIME)
 
-all: f2c.h signal1.h sysdep1.h $(F2C_LIB)
+all: f2c.h signal1.h sysdep1.h $(F2C_LIB) $(F2C_H)
 
 $(F2C_LIB): $(OFILES)
 	ar r $(F2C_LIB) $?
 	-ranlib  $(F2C_LIB)
 
+$(F2C_H): f2c.h
+	@INSTALL@ -d $(BUILDINCDIR)
+	@INSTALL@ f2c.h $(F2C_H)
+
 ### If your system lacks ranlib, you don't need it; see README.
 
 f77vers.o: f77vers.c
@@ -122,11 +128,10 @@ sysdep1.h: sysdep1.h0
 #main.o: main.c
 #	$(CC) -c -Donexit=on_exit -DSkip_f2c_Undefs main.c
 
-
-
 clean:
-	$(RM) $(F2C_LIB) *.o arith.h signal1.h sysdep1.h
+	$(RM) $(F2C_LIB) *.o *.d arith.h signal1.h sysdep1.h $(F2C_H)
 
+$(OFILES):      f2c.h
 backspac.o:	fio.h
 close.o:	fio.h
 dfe.o:		fio.h
@@ -187,3 +192,6 @@ arith.h: arithchk.c
 	./a.out >arith.h
 	rm -f a.out arithchk.o
 
+# depends target -> already in the Makefile
+depends:
+
diff --git a/ext/f2c_math/Makefile.in b/ext/f2c_math/Makefile.in
index d84db0fdd..56570ae2a 100644
--- a/ext/f2c_math/Makefile.in
+++ b/ext/f2c_math/Makefile.in
@@ -94,3 +94,7 @@ depends:
 .depends: $(DEPENDS)
 	cat *.d > .depends
 
+ifeq ($(wildcard .depends), .depends)
+include .depends
+endif
+
diff --git a/ext/lapack/Makefile.in b/ext/lapack/Makefile.in
index 0a7a82ee2..7610eaca0 100755
--- a/ext/lapack/Makefile.in
+++ b/ext/lapack/Makefile.in
@@ -1,4 +1,5 @@
 # $License$
+# $Id$
 #
 #/bin/sh
 
@@ -71,19 +72,6 @@ $(LAPACKLIB):  $(OBJS)
 
 %.o : %.f
 	@F77@ -c $<  $(F77_INCLUDES) $(F_FLAGS) 
-
-
 clean:
 	$(RM) $(OBJS) $(LAPACKLIB)
-
- 
-
-
-
-
-
-
-
-
-
-
+depends:
diff --git a/ext/tpx/.cvsignore b/ext/tpx/.cvsignore
index 550bd25cd..b39c0d1a8 100644
--- a/ext/tpx/.cvsignore
+++ b/ext/tpx/.cvsignore
@@ -1,2 +1,3 @@
 Makefile
+.depends
 
diff --git a/ext/tpx/Makefile.in b/ext/tpx/Makefile.in
index 2efe9af98..e786d24f3 100755
--- a/ext/tpx/Makefile.in
+++ b/ext/tpx/Makefile.in
@@ -32,12 +32,13 @@ $(TPLIB): $(COBJS) $(FOBJS)
 	@ARCHIVE@ $(TPLIB) $(COBJS) $(FOBJS) > /dev/null
 
 clean:
-	$(RM) $(COBJS) $(FOBJS) *~
+	$(RM) $(COBJS) $(FOBJS) *~ *.d .depends
 
 depends: $(DEPENDS)
 	cat *.d > .depends
 	$(RM) $(DEPENDS)
 
+ifeq ($(wildcard .depends), .depends)
 include .depends
-
+endif