From c9fa963e71258c5adfb71cf1996cd1bcb33df0bb Mon Sep 17 00:00:00 2001
From: Roland Reichwein <mail@reichwein.it>
Date: Sun, 26 Feb 2023 08:54:17 +0100
Subject: Start with copy of whiteboard

---
 webassembly/Makefile | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 webassembly/Makefile

(limited to 'webassembly/Makefile')

diff --git a/webassembly/Makefile b/webassembly/Makefile
new file mode 100644
index 0000000..0487d2a
--- /dev/null
+++ b/webassembly/Makefile
@@ -0,0 +1,32 @@
+TARGET=libwhiteboard.wasm
+TARGETJS=$(TARGET:.wasm=.js)
+
+OBJS=diff.o
+
+CXX=em++
+
+CXXFLAGS=-I./include -O2 -std=c++20
+LDFLAGS=-s WASM=1 -s EXPORTED_FUNCTIONS="['_diff_create', '_diff_apply', '_free']"
+# Note: Instead of the above explicit EXPORTED_FUNCTIONS, the following causes ~7x wasm file size:
+#-s LINKABLE=1 -s EXPORT_ALL=1
+
+default: $(TARGET)
+
+$(OBJS): include
+
+include:
+	mkdir include
+	cp -r /usr/include/boost include/boost
+
+$(TARGET): $(OBJS)
+	$(CXX) $(LDFLAGS) $(OBJS) -o $(TARGETJS)
+	cp $(TARGETJS) $(TARGET) ../html/
+
+diff.o: ../diff.cpp
+	$(CXX) -c $< $(CXXFLAGS) -o $@
+	# run again in case em++ just asked to re-run (on pbuilder/buildd)
+	test -e $@ || $(CXX) -c $< $(CXXFLAGS) -o $@
+
+clean:
+	-rm -f *.o *.js *.wasm *.html
+	-rm -rf include
-- 
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