WASM --enable-wasm-strip now skips lots of LO code

... resulting in a stripped-down, Writer-only build to decrease
the resulting WASM bytecode size.

It removes the following code from the build:
* All other major modules: Base, Calc, Chart, Draw, Impress and
  Math and related writerperfect filters
* The premultiply tables
* The (auto-)recovery functionality
* All accessibility (but not the accessibility document checker)
* The LanguageGuess component
* EPUB support
* The start center / BackingWindow
* The TipOfTheDay functionality
* The splash screen communication

Currently crashs with anything different then soffice --writer.
Closing the document also still crashes.

FYI: many of these features are now behind ENABLE_WASM_STRIP_*
defines, but they normally don't work on their own, globally!
That's because we started with stripping the main components.

Change-Id: Ib9c0f9452815910c0a2aceaf142ba1ad4a9cb0d7
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/126182
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>

5 files changed, 55 insertions, 5 deletions

diff --git a/writerperfect/Library_wpftwriter.mk b/writerperfect/Library_wpftwriter.mk
index 582bfc5faa3a..840a86f06e22 100644
--- a/writerperfect/Library_wpftwriter.mk
+++ b/writerperfect/Library_wpftwriter.mk
@@ -26,6 +26,11 @@ $(eval $(call gb_Library_set_include,wpftwriter,\
 
 $(eval $(call gb_Library_set_componentfile,wpftwriter,writerperfect/source/writer/wpftwriter,services))
 
+$(eval $(call gb_Library_add_componentimpls,wpftwriter, \
+    $(if $(ENABLE_WASM_STRIP_EPUB),,extended) \
+    $(if $(ENABLE_WASM_STRIP_SWEXPORTS),,extended2) \
+))
+
 $(eval $(call gb_Library_use_sdk_api,wpftwriter))
 
 $(eval $(call gb_Library_use_common_precompiled_header,wpftwriter))
@@ -50,12 +55,17 @@ $(eval $(call gb_Library_use_libraries,wpftwriter,\
 	xo \
 ))
 
+ifneq ($(ENABLE_WASM_STRIP_EPUB),TRUE)
+$(eval $(call gb_Library_use_externals,wpftwriter,\
+	epubgen \
+))
+endif
+
 $(eval $(call gb_Library_use_externals,wpftwriter,\
 	abw \
 	boost_headers \
 	ebook \
-	epubgen \
-	etonyek \
+    $(if $(ENABLE_WASM_STRIP_SWEXPORTS),,etonyek) \
 	icu_headers \
 	icui18n \
 	icuuc \
@@ -71,18 +81,28 @@ $(eval $(call gb_Library_use_externals,wpftwriter,\
 	zlib \
 ))
 
+ifneq ($(ENABLE_WASM_STRIP_EPUB),TRUE)
 $(eval $(call gb_Library_add_exception_objects,wpftwriter,\
-	writerperfect/source/writer/AbiWordImportFilter \
-	writerperfect/source/writer/EBookImportFilter \
 	writerperfect/source/writer/EPUBExportDialog \
 	writerperfect/source/writer/EPUBExportFilter \
 	writerperfect/source/writer/EPUBExportUIComponent \
 	writerperfect/source/writer/EPUBPackage \
+))
+endif
+
+ifneq ($(ENABLE_WASM_STRIP_SWEXPORTS),TRUE)
+$(eval $(call gb_Library_add_exception_objects,wpftwriter,\
+	writerperfect/source/writer/AbiWordImportFilter \
+	writerperfect/source/writer/EBookImportFilter \
 	writerperfect/source/writer/MSWorksImportFilter \
 	writerperfect/source/writer/MWAWImportFilter \
 	writerperfect/source/writer/PagesImportFilter \
-	writerperfect/source/writer/StarOfficeWriterImportFilter \
 	writerperfect/source/writer/WordPerfectImportFilter \
+))
+endif
+
+$(eval $(call gb_Library_add_exception_objects,wpftwriter,\
+	writerperfect/source/writer/StarOfficeWriterImportFilter \
 	writerperfect/source/writer/exp/XMLBase64ImportContext \
 	writerperfect/source/writer/exp/XMLFootnoteImportContext \
 	writerperfect/source/writer/exp/XMLSectionContext \
diff --git a/writerperfect/Module_writerperfect.mk b/writerperfect/Module_writerperfect.mk
index c24b0dd5bcc6..c09dc27b1bde 100644
--- a/writerperfect/Module_writerperfect.mk
+++ b/writerperfect/Module_writerperfect.mk
@@ -20,9 +20,11 @@
 $(eval $(call gb_Module_Module,writerperfect))
 
 $(eval $(call gb_Module_add_targets,writerperfect,\
+    $(if $(ENABLE_WASM_STRIP_BASIC_CALC_DRAW_MATH_IMPRESS),, \
 	Library_wpftcalc \
 	Library_wpftdraw \
 	Library_wpftimpress \
+    ) \
 	Library_wpftwriter \
 	Library_writerperfect \
 	UIConfig_writerperfect \
diff --git a/writerperfect/source/writer/wpftwriter.component b/writerperfect/source/writer/wpftwriter.component
index 8ab436634052..176d48750c19 100644
--- a/writerperfect/source/writer/wpftwriter.component
+++ b/writerperfect/source/writer/wpftwriter.component
@@ -22,31 +22,37 @@
       constructor="com_sun_star_comp_Writer_AbiWordImportFilter_get_implementation">
     <service name="com.sun.star.document.ImportFilter"/>
     <service name="com.sun.star.document.ExtendedTypeDetection"/>
+    <optional/>
   </implementation>
   <implementation name="com.sun.star.comp.Writer.MSWorksImportFilter"
       constructor="com_sun_star_comp_Writer_MSWorksImportFilter_get_implementation">
     <service name="com.sun.star.document.ImportFilter"/>
     <service name="com.sun.star.document.ExtendedTypeDetection"/>
+    <optional/>
   </implementation>
   <implementation name="com.sun.star.comp.Writer.MWAWImportFilter"
       constructor="com_sun_star_comp_Writer_MWAWImportFilter_get_implementation">
     <service name="com.sun.star.document.ImportFilter"/>
     <service name="com.sun.star.document.ExtendedTypeDetection"/>
+    <optional/>
   </implementation>
   <implementation name="com.sun.star.comp.Writer.WordPerfectImportFilter"
       constructor="com_sun_star_comp_Writer_WordPerfectImportFilter_get_implementation">
     <service name="com.sun.star.document.ExtendedTypeDetection"/>
     <service name="com.sun.star.document.ImportFilter"/>
+    <optional/>
   </implementation>
   <implementation name="org.libreoffice.comp.Writer.EBookImportFilter"
       constructor="org_libreoffice_comp_Writer_EBookImportFilter_get_implementation">
     <service name="com.sun.star.document.ExtendedTypeDetection"/>
     <service name="com.sun.star.document.ImportFilter"/>
+    <optional/>
   </implementation>
   <implementation name="org.libreoffice.comp.Writer.PagesImportFilter"
       constructor="org_libreoffice_comp_Writer_PagesImportFilter_get_implementation">
     <service name="com.sun.star.document.ExtendedTypeDetection"/>
     <service name="com.sun.star.document.ImportFilter"/>
+    <optional/>
   </implementation>
   <implementation name="org.libreoffice.comp.Writer.StarOfficeWriterImportFilter"
       constructor="org_libreoffice_comp_Writer_StarOfficeWriterImportFilter_get_implementation">
@@ -56,9 +62,11 @@
   <implementation name="com.sun.star.comp.Writer.EPUBExportFilter"
       constructor="com_sun_star_comp_Writer_EPUBExportFilter_get_implementation">
     <service name="com.sun.star.document.ExportFilter"/>
+    <optional/>
   </implementation>
   <implementation name="com.sun.star.comp.Writer.EPUBExportUIComponent"
       constructor="com_sun_star_comp_Writer_EPUBExportUIComponent_get_implementation">
     <service name="com.sun.star.ui.dialogs.FilterOptionsDialog"/>
+    <optional/>
   </implementation>
 </component>
diff --git a/writerperfect/source/writer/wpftwriter.component.extended b/writerperfect/source/writer/wpftwriter.component.extended
new file mode 100644
index 000000000000..577d05e96d72
--- /dev/null
+++ b/writerperfect/source/writer/wpftwriter.component.extended
@@ -0,0 +1,8 @@
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+com.sun.star.comp.Writer.EPUBExportFilter
+com.sun.star.comp.Writer.EPUBExportUIComponent
diff --git a/writerperfect/source/writer/wpftwriter.component.extended2 b/writerperfect/source/writer/wpftwriter.component.extended2
new file mode 100644
index 000000000000..91cd0e0463f0
--- /dev/null
+++ b/writerperfect/source/writer/wpftwriter.component.extended2
@@ -0,0 +1,12 @@
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+com.sun.star.comp.Writer.AbiWordImportFilter
+com.sun.star.comp.Writer.MSWorksImportFilter
+com.sun.star.comp.Writer.MWAWImportFilter
+com.sun.star.comp.Writer.WordPerfectImportFilter
+org.libreoffice.comp.Writer.EBookImportFilter
+org.libreoffice.comp.Writer.PagesImportFilter