diff --git a/makefile b/makefile
index a917931..e46d5ed 100644
--- a/makefile
+++ b/makefile
@@ -21,6 +21,8 @@ else
 RANLIB:=$(PREFIX)ranlib
 endif
 endif
+INSTALL_CMD = install
+
 
 #Output filenames for various targets.
 ifndef LIBNAME
@@ -281,29 +283,11 @@ endif
 #This rule installs the library and the header files. This must be run
 #as root in order to have a high enough permission to write to the correct
 #directories and to set the owner and group to root.
-ifndef NODOCS
-install: library docs
-else
-install: library
-endif
-	install -d $(LIBPATH)
-	install -d $(INCPATH)
-	install -m 644 $(LIBNAME) $(LIBPATH)
-	install -m 644 $(HEADERS) $(INCPATH)
-ifndef NODOCS
-	install -d $(DATAPATH)
-	install -m 644 doc/crypt.pdf $(DATAPATH)
-endif
+install: .common_install
 
-install_bins: $(USEFUL_DEMOS)
-	install -d $(BINPATH)
-	install -m 775 $(USEFUL_DEMOS) $(BINPATH)
+install_bins: .common_install_bins
 
-install_test: $(LIBTEST)
-	install -d $(LIBPATH)
-	install -d $(INCPATH)
-	install -m 644 $(LIBTEST) $(LIBPATH)
-	install -m 644 testprof/tomcrypt_test.h $(INCPATH)
+install_test: .common_install_test
 
 profile:
 	CFLAGS="$(CFLAGS) -fprofile-generate" $(MAKE) timing EXTRALIBS="$(EXTRALIBS) -lgcov"
diff --git a/makefile.common b/makefile.common
index 95a4d19..c550cc2 100644
--- a/makefile.common
+++ b/makefile.common
@@ -1,5 +1,9 @@
 #common make targets shared over multiple makefiles
 
+ifndef INSTALL_CMD
+$(error your makefile must define INSTALL_CMD)
+endif
+
 bins: $(USEFUL_DEMOS)
 
 all_test: test tv_gen $(DEMOS)
@@ -14,6 +18,30 @@ doxy:
 docs:
 	$(MAKE) -C doc/ crypt.pdf V=$(V)
 
+
+install_all: install install_bins install_docs install_test
+
+
+.common_install: $(LIBNAME)
+	install -d $(INCPATH)
+	install -d $(LIBPATH)
+	$(INSTALL_CMD) -m 644 $(LIBNAME) $(LIBPATH)/$(LIBNAME)
+	install -m 644 $(HEADERS) $(INCPATH)
+
+.common_install_bins: $(USEFUL_DEMOS)
+	install -d $(BINPATH)
+	$(INSTALL_CMD) -m 775 $(USEFUL_DEMOS) $(BINPATH)
+
+.common_install_test: $(LIBTEST)
+	install -d $(LIBPATH)
+	install -d $(INCPATH)
+	install -m 644 testprof/tomcrypt_test.h $(INCPATH)
+	$(INSTALL_CMD) -m 644 $(LIBTEST) $(LIBPATH)
+
+install_docs: docs
+	install -d $(DATAPATH)
+	install -m 644 doc/crypt.pdf $(DATAPATH)
+
 install_hooks:
 	for s in `ls hooks/`; do ln -s ../../hooks/$$s .git/hooks/$$s; done
 
diff --git a/makefile.shared b/makefile.shared
index 43b2efa..ccc5a31 100644
--- a/makefile.shared
+++ b/makefile.shared
@@ -16,7 +16,7 @@ ifndef LT
   endif
 endif
 LTCOMPILE = $(LT) --mode=compile --tag=CC $(CC)
-
+INSTALL_CMD = $(LT) --mode=install install
 
 #Output filenames for various targets.
 ifndef LIBTEST_S
@@ -239,23 +239,14 @@ $(LIBNAME): $(OBJECTS)
 $(LIBTEST): $(TOBJECTS)
 	$(LT) --mode=link --tag=CC $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) `find ./testprof -type f -name "*.lo"` -o $@ -rpath $(LIBPATH) -version-info $(VERSION_LT)
 
-install: $(LIBNAME)
-	install -d $(LIBPATH)/pkgconfig
-	install -d $(INCPATH)
-	$(LT) --mode=install install -c $(LIBNAME) $(LIBPATH)/$(LIBNAME)
-	install -m 644 $(HEADERS) $(INCPATH)
+install: .common_install
 	sed -e 's,^prefix=.*,prefix=$(DESTDIR),' -e 's,^Version:.*,Version: $(VERSION),' libtomcrypt.pc.in > libtomcrypt.pc
-	install -m 644 libtomcrypt.pc $(LIBPATH)/pkgconfig/libtomcrypt.pc
+	install -d $(LIBPATH)/pkgconfig
+	install -m 644 libtomcrypt.pc $(LIBPATH)/pkgconfig/
 
-install_bins: $(USEFUL_DEMOS)
-	install -d $(BINPATH)
-	$(LT) --mode=install install -c $(USEFUL_DEMOS) $(BINPATH)
+install_bins: .common_install_bins
 
-install_test: $(LIBTEST)
-	install -d $(LIBPATH)
-	install -d $(INCPATH)
-	install -m 644 testprof/tomcrypt_test.h $(INCPATH)
-	$(LT) --mode=install install -c $(LIBTEST) $(LIBPATH)/$(LIBTEST)
+install_test: .common_install_test
 
 test: $(LIBNAME) $(LIBTEST) $(TESTS)
 	$(LT) --mode=link --tag=CC $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $(TEST) $(TESTS) $(LIBTEST) $(LIBNAME) $(EXTRALIBS)