--- Makefile.orig	2026-03-06 19:16:07
+++ Makefile	2026-04-07 20:55:17
@@ -140,6 +140,7 @@
 # Targets
 
 LIBGSM	= $(LIB)/libgsm.a
+LIBGSMSO= $(LIB)/libgsm.1.dylib
 
 TOAST	= $(BIN)/toast
 UNTOAST	= $(BIN)/untoast
@@ -257,18 +258,20 @@
 # Install targets
 
 GSM_INSTALL_TARGETS =	\
-		$(GSM_INSTALL_LIB)/libgsm.a		\
-		$(GSM_INSTALL_INC)/gsm.h		\
-		$(GSM_INSTALL_MAN)/gsm.3		\
-		$(GSM_INSTALL_MAN)/gsm_explode.3	\
-		$(GSM_INSTALL_MAN)/gsm_option.3		\
-		$(GSM_INSTALL_MAN)/gsm_print.3
+		$(DESTDIR)$(GSM_INSTALL_LIB)/libgsm.a		\
+		$(DESTDIR)$(GSM_INSTALL_LIB)/libgsm.1.dylib	\
+		$(DESTDIR)$(GSM_INSTALL_LIB)/libgsm.dylib	\
+		$(DESTDIR)$(GSM_INSTALL_INC)/gsm.h		\
+		$(DESTDIR)$(GSM_INSTALL_MAN)/gsm.3		\
+		$(DESTDIR)$(GSM_INSTALL_MAN)/gsm_explode.3	\
+		$(DESTDIR)$(GSM_INSTALL_MAN)/gsm_option.3	\
+		$(DESTDIR)$(GSM_INSTALL_MAN)/gsm_print.3
 
 TOAST_INSTALL_TARGETS =	\
-		$(TOAST_INSTALL_BIN)/toast		\
-		$(TOAST_INSTALL_BIN)/tcat		\
-		$(TOAST_INSTALL_BIN)/untoast		\
-		$(TOAST_INSTALL_MAN)/toast.1
+		$(DESTDIR)$(TOAST_INSTALL_BIN)/toast		\
+		$(DESTDIR)$(TOAST_INSTALL_BIN)/tcat		\
+		$(DESTDIR)$(TOAST_INSTALL_BIN)/untoast		\
+		$(DESTDIR)$(TOAST_INSTALL_MAN)/toast.1
 
 
 # Default rules
@@ -279,7 +282,7 @@
 
 # Target rules
 
-all:		$(LIBGSM) $(TOAST) $(TCAT) $(UNTOAST)
+all:		$(LIBGSM) $(LIBGSMSO) $(TOAST) $(TCAT) $(UNTOAST)
 		@-echo $(ROOT): Done.
 
 tst:		$(TST)/lin2cod $(TST)/cod2lin $(TOAST) $(TST)/test-result
@@ -304,11 +307,15 @@
 		$(AR) $(ARFLAGS) $(LIBGSM) $(GSM_OBJECTS)
 		$(RANLIB) $(LIBGSM)
 
+$(LIBGSMSO):	$(LIB) $(GSM_OBJECTS)
+		-rm $(RMFLAGS) $(LIBGSMSO)
+		$(LD) $(LFLAGS) -o $@ -dynamiclib -Wl,-compatibility_version,1,-current_version,$(VERSION),-install_name,$(GSM_INSTALL_LIB)/libgsm.1.dylib $(GSM_OBJECTS)
 
+
 # Toast, Untoast and Tcat -- the compress-like frontends to gsm.
 
-$(TOAST):	$(BIN) $(TOAST_OBJECTS) $(LIBGSM)
-		$(LD) $(LFLAGS) -o $(TOAST) $(TOAST_OBJECTS) $(LIBGSM) $(LDLIB)
+$(TOAST):	$(BIN) $(TOAST_OBJECTS) $(LIBGSMSO)
+		$(LD) $(LFLAGS) -o $(TOAST) $(TOAST_OBJECTS) $(LIBGSMSO) $(LDLIB)
 
 $(UNTOAST):	$(BIN) $(TOAST)
 		-rm $(RMFLAGS) $(UNTOAST)
@@ -350,55 +357,64 @@
 			rm $(RMFLAGS) $(TOAST_INSTALL_TARGETS);	\
 		fi
 
-$(TOAST_INSTALL_BIN)/toast:	$(TOAST)
+$(DESTDIR)$(TOAST_INSTALL_BIN)/toast:	$(TOAST)
 		-rm $(RMFLAGS) $@
 		cp $(TOAST) $@
 		chmod 755 $@
 
-$(TOAST_INSTALL_BIN)/untoast:	$(TOAST_INSTALL_BIN)/toast
+$(DESTDIR)$(TOAST_INSTALL_BIN)/untoast:	$(DESTDIR)$(TOAST_INSTALL_BIN)/toast
 		-rm $(RMFLAGS) $@
-		$(LN) $? $@
+		$(LN) -s toast $@
 
-$(TOAST_INSTALL_BIN)/tcat:	$(TOAST_INSTALL_BIN)/toast
+$(DESTDIR)$(TOAST_INSTALL_BIN)/tcat:	$(DESTDIR)$(TOAST_INSTALL_BIN)/toast
 		-rm $(RMFLAGS) $@
-		$(LN) $? $@
+		$(LN) -s toast $@
 
-$(TOAST_INSTALL_MAN)/toast.1:	$(MAN)/toast.1
+$(DESTDIR)$(TOAST_INSTALL_MAN)/toast.1:	$(MAN)/toast.1
 		-rm $(RMFLAGS) $@
 		cp $? $@
 		chmod 444 $@
 
-$(GSM_INSTALL_MAN)/gsm.3:	$(MAN)/gsm.3
+$(DESTDIR)$(GSM_INSTALL_MAN)/gsm.3:	$(MAN)/gsm.3
 		-rm $(RMFLAGS) $@
 		cp $? $@
 		chmod 444 $@
 
-$(GSM_INSTALL_MAN)/gsm_option.3:	$(MAN)/gsm_option.3
+$(DESTDIR)$(GSM_INSTALL_MAN)/gsm_option.3:	$(MAN)/gsm_option.3
 		-rm $(RMFLAGS) $@
 		cp $? $@
 		chmod 444 $@
 
-$(GSM_INSTALL_MAN)/gsm_explode.3:	$(MAN)/gsm_explode.3
+$(DESTDIR)$(GSM_INSTALL_MAN)/gsm_explode.3:	$(MAN)/gsm_explode.3
 		-rm $(RMFLAGS) $@
 		cp $? $@
 		chmod 444 $@
 
-$(GSM_INSTALL_MAN)/gsm_print.3:	$(MAN)/gsm_print.3
+$(DESTDIR)$(GSM_INSTALL_MAN)/gsm_print.3:	$(MAN)/gsm_print.3
 		-rm $(RMFLAGS) $@
 		cp $? $@
 		chmod 444 $@
 
-$(GSM_INSTALL_INC)/gsm.h:	$(INC)/gsm.h
+$(DESTDIR)$(GSM_INSTALL_INC)/gsm.h:	$(INC)/gsm.h
 		-rm $(RMFLAGS) $@
 		cp $? $@
 		chmod 444 $@
 
-$(GSM_INSTALL_LIB)/libgsm.a:	$(LIBGSM)
+$(DESTDIR)$(GSM_INSTALL_LIB)/libgsm.a:	$(LIBGSM)
 		-rm $(RMFLAGS) $@
 		cp $? $@
 		chmod 444 $@
 
+$(DESTDIR)$(GSM_INSTALL_LIB)/libgsm.1.dylib:	$(LIBGSMSO)
+		-rm $(RMFLAGS) $@
+		cp $? $@
+		chmod 755 $@
 
+$(DESTDIR)$(GSM_INSTALL_LIB)/libgsm.dylib:	$(DESTDIR)$(GSM_INSTALL_LIB)/libgsm.1.dylib
+		-rm $(RMFLAGS) $@
+		$(LN) -s libgsm.1.dylib $@
+
+
 # Distribution
 
 dist:		gsm-1.0.tar.gz