Dynamic libraries in OCaml require an additional compilation step on top
of the already specified steps for static libraries. Add an appropriate
template to Makefile.rules.

Signed-off-by: Andrii Sultanov <andrii.sultanov@cloud.com>
---
 tools/ocaml/Makefile.rules | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/tools/ocaml/Makefile.rules b/tools/ocaml/Makefile.rules
index 5d534d8754..b9d4b51f0a 100644
--- a/tools/ocaml/Makefile.rules
+++ b/tools/ocaml/Makefile.rules
@@ -51,12 +51,13 @@ ifneq ($(MAKECMDGOALS),clean)
 endif
 
 clean: $(CLEAN_HOOKS)
-	$(Q)rm -f .*.d *.o *.so *.a *.cmo *.cmi *.cma *.cmx *.cmxa *.annot *.spot *.spit $(LIBS) $(PROGRAMS) $(GENERATED_FILES) .ocamldep.make META
+	$(Q)rm -f .*.d *.o *.so *.a *.cmo *.cmi *.cma *.cmx *.cmxa *.cmxs *.annot *.spot *.spit $(LIBS) $(PROGRAMS) $(GENERATED_FILES) .ocamldep.make META
 
 distclean: clean
 
 quiet-command = $(if $(V),$1,@printf " %-8s %s\n" "$2" "$3" && $1)
 
+mk-caml-shared-lib-native = $(call quiet-command, $(OCAMLOPT) $(OCAMLOPTFLAGS) -shared -linkall -o $1 $2 $3,MLA,$1)
 mk-caml-lib-native = $(call quiet-command, $(OCAMLOPT) $(OCAMLOPTFLAGS) -a -o $1 $2 $3,MLA,$1)
 mk-caml-lib-bytecode = $(call quiet-command, $(OCAMLC) $(OCAMLCFLAGS) -a -o $1 $2 $3,MLA,$1)
 
@@ -76,6 +77,19 @@ define OCAML_LIBRARY_template
 	$(call mk-caml-lib-stubs,$$@, $$+, $(foreach lib,$(LIBS_$(1)),$(lib)))
 endef
 
+# Dynamically linked OCaml libraries ("plugins" in Dynlink parlance)
+# need to compile an .cmxs file
+define OCAML_DYN_LIBRARY_template
+ $(1).cmxs: $(1).cmxa
+	$(call mk-caml-shared-lib-native,$$@, $(1).cmxa)
+ $(1).cmxa: lib$(1)_stubs.a $(foreach obj,$($(1)_OBJS),$(obj).cmx)
+	$(call mk-caml-lib-native,$$@, -cclib -l$(1)_stubs $(foreach lib,$(LIBS_$(1)),-cclib $(lib)), $(foreach obj,$($(1)_OBJS),$(obj).cmx))
+ $(1)_stubs.a: $(foreach obj,$$($(1)_C_OBJS),$(obj).o)
+	$(call mk-caml-stubs,$$@, $$+)
+ lib$(1)_stubs.a: $(foreach obj,$($(1)_C_OBJS),$(obj).o)
+	$(call mk-caml-lib-stubs,$$@, $$+)
+endef
+
 define OCAML_NOC_LIBRARY_template
  $(1).cmxa: $(foreach obj,$($(1)_OBJS),$(obj).cmx)
 	$(call mk-caml-lib-native,$$@, , $(foreach obj,$($(1)_OBJS),$(obj).cmx))
@@ -98,6 +112,7 @@ endef
 -include .ocamldep.make
 
 $(foreach lib,$(OCAML_LIBRARY),$(eval $(call OCAML_LIBRARY_template,$(lib))))
+$(foreach lib,$(OCAML_DYN_LIBRARY),$(eval $(call OCAML_DYN_LIBRARY_template,$(lib))))
 $(foreach lib,$(OCAML_NOC_LIBRARY),$(eval $(call OCAML_NOC_LIBRARY_template,$(lib))))
 $(foreach p,$(OCAML_PROGRAM),$(eval $(call OCAML_PROGRAM_template,$(p))))
 $(foreach p,$(C_PROGRAM),$(eval $(call C_PROGRAM_template,$(p))))
-- 
2.39.2

On 03/09/2024 12:44 pm, Andrii Sultanov wrote:
> Dynamic libraries in OCaml require an additional compilation step on top
> of the already specified steps for static libraries. Add an appropriate
> template to Makefile.rules.
>
> Signed-off-by: Andrii Sultanov <andrii.sultanov@cloud.com>

Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>

> On 3 Sep 2024, at 17:40, Andrew Cooper <andrew.cooper3@citrix.com> wrote:
> 
> On 03/09/2024 12:44 pm, Andrii Sultanov wrote:
>> Dynamic libraries in OCaml require an additional compilation step on top
>> of the already specified steps for static libraries. Add an appropriate
>> template to Makefile.rules.
>> 
>> Signed-off-by: Andrii Sultanov <andrii.sultanov@cloud.com>
> 
> Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Christian Lindig <christian.lindig@cloud.com>