--- ../Makefile.rules.orig	2019-09-22 20:57:37.181592898 +0200
+++ ./Makefile.rules	2019-09-22 21:00:21.344024139 +0200
@@ -470,22 +470,20 @@
 LTINSTALL=$(LIBTOOL) --mode=install $(INSTALL)
 
 install: install-libgap install-headers
-	@echo "Error, 'make install' has not yet been implemented"
-	exit 1
-# 	$(QUIET_INSTALL)$(INSTALL) -d -m 0755 $(DESTDIR)$(bindir)
-# 	$(QUIET_INSTALL)$(INSTALL) gap $(DESTDIR)$(bindir)
-# 	$(QUIET_INSTALL)$(INSTALL) gac $(DESTDIR)$(bindir)
-# 
-# install-headers:
-# 	$(QUIET_INSTALL)$(INSTALL) -d -m 0755 $(DESTDIR)$(includedir)/gap
-# 	$(QUIET_INSTALL)$(INSTALL) -d -m 0755 $(DESTDIR)$(includedir)/gap/hpc
-# 	$(QUIET_INSTALL)$(INSTALL) -m 0644 $(srcdir)/src/*.h $(DESTDIR)$(includedir)/gap
-# 	$(QUIET_INSTALL)$(INSTALL) -m 0644 $(srcdir)/src/hpc/*.h $(DESTDIR)$(includedir)/gap/hpc
-# 	# TODO: take care of config.h
-# 
-# install-libgap: libgap.la
-# 	$(QUIET_INSTALL)$(INSTALL) -d -m 0755 $(DESTDIR)$(libdir)
-# 	$(QUIET_INSTALL)$(LTINSTALL) libgap.la $(DESTDIR)$(libdir)
+	$(QUIET_INSTALL)$(INSTALL) -d -m 0755 $(DESTDIR)$(bindir)
+	$(QUIET_INSTALL)$(INSTALL) gap $(DESTDIR)$(bindir)
+	$(QUIET_INSTALL)$(INSTALL) gac $(DESTDIR)$(bindir)
+
+install-headers:
+	$(QUIET_INSTALL)$(INSTALL) -d -m 0755 $(DESTDIR)$(includedir)/gap
+	$(QUIET_INSTALL)$(INSTALL) -d -m 0755 $(DESTDIR)$(includedir)/gap/hpc
+	$(QUIET_INSTALL)$(INSTALL) -m 0644 $(srcdir)/src/*.h $(DESTDIR)$(includedir)/gap
+	$(QUIET_INSTALL)$(INSTALL) -m 0644 $(srcdir)/src/hpc/*.h $(DESTDIR)$(includedir)/gap/hpc
+	# TODO: take care of config.h
+
+install-libgap: libgap.la
+	$(QUIET_INSTALL)$(INSTALL) -d -m 0755 $(DESTDIR)$(libdir)
+	$(QUIET_INSTALL)$(LTINSTALL) libgap.la $(DESTDIR)$(libdir)
 
 
 .PHONY: install install-libgap