From d33d0f08e09ae9f5bbacfeaffd522a5b38024c65 Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Tue, 6 May 2014 14:43:46 -0700
Subject: [PATCH] Preliminary build script for Emscripten

---
 dist-build/Makefile.am   |  1 +
 dist-build/emscripten.sh | 13 +++++++++++++
 2 files changed, 14 insertions(+)
 create mode 100755 dist-build/emscripten.sh

diff --git a/dist-build/Makefile.am b/dist-build/Makefile.am
index d888f6a0..05efe6a7 100644
--- a/dist-build/Makefile.am
+++ b/dist-build/Makefile.am
@@ -4,6 +4,7 @@ EXTRA_DIST = \
 	android-arm.sh \
 	android-x86.sh \
 	android-mips.sh \
+	emscripten.sh \
 	ios.sh \
 	msys2-win32.sh \
 	msys2-win64.sh
diff --git a/dist-build/emscripten.sh b/dist-build/emscripten.sh
new file mode 100755
index 00000000..810c434c
--- /dev/null
+++ b/dist-build/emscripten.sh
@@ -0,0 +1,13 @@
+#! /bin/sh
+
+export PREFIX="$(pwd)/libsodium-js"
+export EXPORTED_FUNCTIONS='["_sodium_version_string"]'
+export OPTFLAGS="--llvm-lto 3 -Oz"
+export CFLAGS="$OPTFLAGS --pre-js=test/default/pre.js "
+export LDFLAGS="-s EXPORTED_FUNCTIONS=${EXPORTED_FUNCTIONS}"
+
+emconfigure ./configure --disable-shared --prefix="$PREFIX" && \
+emmake make clean &&
+emmake make install &&
+emcc --closure 1 $OPTFLAGS $LDFLAGS \
+  "${PREFIX}/lib/libsodium.a" -o "${PREFIX}/lib/libsodium.js"