--- src/extra/blas/Makefile.in.orig	2020-05-05 02:47:09 UTC
+++ src/extra/blas/Makefile.in
@@ -16,11 +16,11 @@ ALL_FFLAGS = $(ALL_FFLAGS_LO)
 
 SOURCES = blas00.c blas.f cmplxblas.f
 
-@BUILD_LTO_CHECK_FALSE@Rblas_la = libRblas$(R_DYLIB_EXT)
+@BUILD_LTO_CHECK_FALSE@Rblas_la = libRblas$(R_DYLIB_EXT).%%FULLVER%%
 @BUILD_LTO_CHECK_TRUE@Rblas_la = libRblas.a
 ## @RBLAS_LDFLAGS@ is used on macOS
 ## first for internal BLAS
-Rblas_la_LIBADD = @RBLAS_LDFLAGS@ $(FLIBS_IN_SO)
+Rblas_la_LIBADD = -Wl,-soname,libRblas.so.%%MAJORVER%% $(FLIBS_IN_SO)
 ## then external one
 Rblas_la_LIBADD0 = @RBLAS_LDFLAGS@
 
@@ -45,6 +45,8 @@ Rblas_install: $(Rblas_la)
 	@$(MKINSTALLDIRS) "$(DESTDIR)$(Rexeclibdir)"
 	@$(SHELL) $(top_srcdir)/tools/copy-if-change $(Rblas_la) \
 	  "$(DESTDIR)$(Rexeclibdir)/$(Rblas_la)"
+	@cd $(DESTDIR)$(Rexeclibdir) && ln -s $(Rblas_la) libRblas.so.%%MAJORVER%%
+	@cd $(DESTDIR)$(Rexeclibdir) && ln -s $(Rblas_la) libRblas.so
 
 Rblas_install-strip: $(Rblas_la)
 	@$(MKINSTALLDIRS) "$(DESTDIR)$(Rexeclibdir)"
@@ -52,6 +54,8 @@ Rblas_install-strip: $(Rblas_la)
 	@if test -n "$(STRIP_SHARED_LIB)"; then \
 	  $(STRIP_SHARED_LIB) "$(DESTDIR)$(Rexeclibdir)/$(Rblas_la)" ;\
 	fi
+	@cd $(DESTDIR)$(Rexeclibdir) && ln -s $(Rblas_la) libRblas.so.%%MAJORVER%%
+	@cd $(DESTDIR)$(Rexeclibdir) && ln -s $(Rblas_la) libRblas.so
 
 mostlyclean: clean
 clean: