5 files changed, 35 insertions, 3 deletions
diff --git a/sal/Library_lo-bootstrap.mk b/sal/Library_lo-bootstrap.mk
index 3dc4bf9dfeaa..1e727cdee427 100644
--- a/sal/Library_lo-bootstrap.mk
+++ b/sal/Library_lo-bootstrap.mk
@@ -10,6 +10,8 @@
 
 $(eval $(call gb_Library_Library,lo-bootstrap))
 
+ifeq (ANDROID,$(OS))
+
 # We explicitly *don't* want gb_STDLIBS to be linked here
 $(eval $(call gb_Library_disable_standard_system_libs,lo-bootstrap))
 
@@ -22,6 +24,13 @@ $(eval $(call gb_Library_add_cobjects,lo-bootstrap,\
 	sal/android/libreofficekit-jni \
 	sal/android/lo-bootstrap \
 ))
+endif
+
+ifeq (EMSCRIPTEN,$(OS))
+$(eval $(call gb_Library_add_cobjects,lo-bootstrap,\
+	sal/emscripten/lo-bootstrap \
+))
+endif
 
 $(eval $(call gb_Library_set_include,lo-bootstrap,\
 	$$(INCLUDE) \
diff --git a/sal/Library_sal.mk b/sal/Library_sal.mk
index aae7c97f0310..decfa39ce304 100644
--- a/sal/Library_sal.mk
+++ b/sal/Library_sal.mk
@@ -37,7 +37,7 @@ $(eval $(call gb_Library_add_defs,sal,\
 ))
 
 $(eval $(call gb_Library_use_libraries,sal,\
-	$(if $(filter ANDROID,$(OS)), \
+	$(if $(filter ANDROID EMSCRIPTEN,$(OS)), \
 		lo-bootstrap \
 	) \
 ))
diff --git a/sal/Module_sal.mk b/sal/Module_sal.mk
index 34c3f1450613..854d46a8e6d4 100644
--- a/sal/Module_sal.mk
+++ b/sal/Module_sal.mk
@@ -11,7 +11,7 @@ $(eval $(call gb_Module_Module,sal))
 
 $(eval $(call gb_Module_add_targets,sal,\
 	$(if $(CROSS_COMPILING),,$(if $(filter TRUE,$(DISABLE_DYNLOADING)),,Executable_cppunittester)) \
-	$(if $(filter $(OS),ANDROID), \
+	$(if $(filter $(OS),ANDROID EMSCRIPTEN), \
 		Library_lo-bootstrap) \
 	Library_sal \
     $(call gb_CondLibSalTextenc,Library_sal_textenc) \
diff --git a/sal/emscripten/lo-bootstrap.c b/sal/emscripten/lo-bootstrap.c
new file mode 100644
index 000000000000..cfcf3df1fdf2
--- /dev/null
+++ b/sal/emscripten/lo-bootstrap.c
@@ -0,0 +1,19 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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/.
+ */
+
+#include <osl/detail/emscripten-bootstrap.h>
+
+__attribute__ ((visibility("default")))
+const char *
+lo_get_app_data_dir(void)
+{
+    return "/instdir";
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/rtl/bootstrap.cxx b/sal/rtl/bootstrap.cxx
index 422411190ea4..04e0a4d0ed14 100644
--- a/sal/rtl/bootstrap.cxx
+++ b/sal/rtl/bootstrap.cxx
@@ -50,6 +50,10 @@
 #include <osl/detail/android-bootstrap.h>
 #endif
 
+#ifdef EMSCRIPTEN
+#include <osl/detail/emscripten-bootstrap.h>
+#endif
+
 #ifdef IOS
 #include <premac.h>
 #import <Foundation/Foundation.h>
@@ -456,7 +460,7 @@ bool Bootstrap_Impl::getValue(
         return true;
     }
 
-#ifdef ANDROID
+#if defined ANDROID || defined EMSCRIPTEN
     if (key == "APP_DATA_DIR")
     {
         const char *app_data_dir = lo_get_app_data_dir();