JavaScript uno bindings for WASM with Embind - first cut

A rough implementation of uno bindings for LOWA using embind.

Adds new parameter '-W' to cppumaker to generate _embind.cxx
files alongside .hdl & .hpp.

For usage examples see static/README.wasm.md

Change-Id: Iee5d05e37bfba8e101c08212b15c05f7f2fa6c33
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/156273
Tested-by: Jenkins
Reviewed-by: Sarper Akdemir <sarper.akdemir.extern@allotropia.de>

3 files changed, 46 insertions, 3 deletions

diff --git a/solenv/gbuild/UnoApi.mk b/solenv/gbuild/UnoApi.mk
index f396642901fe..9ed314703f33 100644
--- a/solenv/gbuild/UnoApi.mk
+++ b/solenv/gbuild/UnoApi.mk
@@ -36,6 +36,8 @@ define gb_UnoApi_add_idlfiles
 $(call gb_UnoApiTarget_add_idlfiles,$(1),$(2),$(3))
 $(call gb_UnoApiHeadersTarget_add_headerfiles,$(1),$(2),$(addsuffix .hpp,$(3)))
 $(call gb_UnoApiHeadersTarget_add_headerfiles,$(1),$(2),$(addsuffix .hdl,$(3)))
+$(if $(filter EMSCRIPTEN, $(OS)),\
+	$(call gb_UnoApiHeadersTarget_add_embind,$(1),$(2),$(addsuffix _embind,$(3))))
 
 endef
 
@@ -69,4 +71,19 @@ $(call gb_UnoApiTarget_set_reference_rdbfile,$(1),$(2))
 
 endef
 
+ifeq ($(OS),EMSCRIPTEN)
+$(eval $(call gb_StaticLibrary_StaticLibrary,unoembind))
+$(eval $(call gb_StaticLibrary_set_include,unoembind,\
+	$$(INCLUDE) \
+))
+$(eval $(call gb_StaticLibrary_use_api,unoembind,\
+	offapi \
+	udkapi \
+))
+$(eval $(call gb_StaticLibrary_add_exception_objects,unoembind,\
+	static/source/unoembindhelpers/PrimaryBindings\
+))
+
+endif
+
 # vim: set noet sw=4 ts=4:
diff --git a/solenv/gbuild/UnoApiTarget.mk b/solenv/gbuild/UnoApiTarget.mk
index 67e8bccca906..7c52ecc81f1e 100644
--- a/solenv/gbuild/UnoApiTarget.mk
+++ b/solenv/gbuild/UnoApiTarget.mk
@@ -151,7 +151,8 @@ $(call gb_UnoApiHeadersTarget_get_real_comprehensive_target,%) : \
 		$(gb_UnoApiHeadersTarget_CPPUMAKERDEPS)
 	$(call gb_Output_announce,$*,$(true),HPC,3)
 	$(call gb_Trace_StartRange,$*,HPC)
-	$(call gb_UnoApiHeadersTarget__command,$@,$*,$(call gb_UnoApiHeadersTarget_get_comprehensive_dir,$*),-C)
+	$(call gb_UnoApiHeadersTarget__command,$@,$*,$(call gb_UnoApiHeadersTarget_get_comprehensive_dir,$*), \
+		-C $(if $(filter EMSCRIPTEN, $(OS)), -W))
 	$(call gb_Trace_EndRange,$*,HPC)
 
 $(call gb_UnoApiHeadersTarget_get_real_target,%) : \
@@ -231,6 +232,21 @@ define gb_UnoApiHeadersTarget_add_headerfiles
 $(foreach hdr,$(3),$(call gb_UnoApiHeadersTarget_add_headerfile,$(1),$(2)/$(hdr)))
 endef
 
+# call gb_UnoApiEmbindTarget_add_embind,unoapi,directory,headerfilenames
+define gb_UnoApiHeadersTarget_add_embind
+$(if $(filter offapi udkapi, $(1)),\
+	$(foreach hdr,$(3),$(eval $(call gb_UnoApiEmbindTarget__add_embind,$(1),$(2),$(hdr)))))
+endef
+
+# CaptionEscapeDirection contains "auto" as a variable name.. so exclude that
+define gb_UnoApiEmbindTarget__add_embind
+$(if $(filter-out CaptionEscapeDirection_embind, $(3)),\
+$(eval $(call gb_StaticLibrary_add_generated_exception_objects,unoembind,\
+	UnoApiHeadersTarget/$(1)/comprehensive/$(2)/$(3) \
+)))
+
+endef
+
 define gb_UnoApiHeadersTarget__use_api_for_target
 $(call gb_UnoApiHeadersTarget_get_$(3),$(1)) : $(call gb_UnoApiTarget_get_target,$(2))
 $(call gb_UnoApiHeadersTarget_get_$(3),$(1)) : UNOAPI_DEPS += -X$(call gb_UnoApiTarget_get_target,$(2))
diff --git a/solenv/gbuild/platform/unxgcc.mk b/solenv/gbuild/platform/unxgcc.mk
index bfb860a41fc2..29adbf9dc42f 100644
--- a/solenv/gbuild/platform/unxgcc.mk
+++ b/solenv/gbuild/platform/unxgcc.mk
@@ -191,8 +191,18 @@ endef
 define gb_LinkTarget__command_staticlink
 $(call gb_Helper_abbreviate_dirs,\
 	rm -f $(1) && \
-	$(if $(filter EMSCRIPTEN,$(OS)),unset PYTHONWARNINGS ;) \
+	$(if $(filter EMSCRIPTEN,$(OS)),unset PYTHONWARNINGS ; \
+		RESPONSEFILE=$(call gb_var2file,$(shell $(gb_MKTEMP)), \
+			$(foreach object,$(COBJECTS),$(call gb_CObject_get_target,$(object))) \
+			$(foreach object,$(CXXOBJECTS),$(call gb_CxxObject_get_target,$(object))) \
+			$(foreach object,$(ASMOBJECTS),$(call gb_AsmObject_get_target,$(object))) \
+			$(foreach object,$(GENCOBJECTS),$(call gb_GenCObject_get_target,$(object))) \
+			$(foreach object,$(GENCXXOBJECTS),$(call gb_GenCxxObject_get_target,$(object))) \
+			$(foreach object,$(GENNASMOBJECTS),$(call gb_GenNasmObject_get_target,$(object))) \
+			$(foreach extraobjectlist,$(EXTRAOBJECTLISTS),$(shell cat $(extraobjectlist)))) && ) \
 	$(gb_AR) $(gb_LTOPLUGINFLAGS) -rsu $(1) \
+		$(if $(filter EMSCRIPTEN, $(OS)), \
+			@$${RESPONSEFILE} $(if $(findstring s,$(MAKEFLAGS)),2> /dev/null); rm $${RESPONSEFILE},\
 		$(foreach object,$(COBJECTS),$(call gb_CObject_get_target,$(object))) \
 		$(foreach object,$(CXXOBJECTS),$(call gb_CxxObject_get_target,$(object))) \
 		$(foreach object,$(ASMOBJECTS),$(call gb_AsmObject_get_target,$(object))) \
@@ -200,7 +210,7 @@ $(call gb_Helper_abbreviate_dirs,\
 		$(foreach object,$(GENCXXOBJECTS),$(call gb_GenCxxObject_get_target,$(object))) \
 		$(foreach object,$(GENNASMOBJECTS),$(call gb_GenNasmObject_get_target,$(object))) \
 		$(foreach extraobjectlist,$(EXTRAOBJECTLISTS),@$(extraobjectlist)) \
-		$(if $(findstring s,$(MAKEFLAGS)),2> /dev/null))
+		$(if $(findstring s,$(MAKEFLAGS)),2> /dev/null)))
 endef
 
 define gb_LinkTarget__command