From 99cc93b9a7487cbe6fa735fa6b1c67e97bc83399 Mon Sep 17 00:00:00 2001
From: falkTX <falktx@falktx.com>
Date: Sun, 24 Jul 2022 14:32:24 +0100
Subject: [PATCH] Add wasm-mini build target

Signed-off-by: falkTX <falktx@falktx.com>
---
 .github/workflows/build.yml | 72 +++++++++++++++++++++++++++++++++++++
 src/Makefile.cardinal.mk    | 11 +++++-
 2 files changed, 82 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 12f374a1..529cc21d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -765,6 +765,78 @@ jobs:
           files: |
             *.zip
 
+  wasm-mini:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: recursive
+      - name: Set up cache
+        id: cache
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/emsdk
+            */*.a
+            build/CardinalFX
+            build/plugins
+            build/rack
+            dpf/build
+            src/Rack/dep/bin
+            src/Rack/dep/include
+            src/Rack/dep/lib
+            src/Rack/dep/share
+            src/Rack/dep/jansson-2.12
+            src/Rack/dep/libarchive-3.4.3
+            src/Rack/dep/libsamplerate-0.1.9
+            src/Rack/dep/speexdsp-SpeexDSP-1.2rc3
+            src/Rack/dep/zstd-1.4.5
+          key: wasm-mini-v${{ env.CACHE_VERSION }}
+      - name: Set up dependencies
+        run: |
+            [ -e ~/emsdk ] || git clone https://github.com/emscripten-core/emsdk.git ~/emsdk
+            cd ~/emsdk && ./emsdk install latest && ./emsdk activate latest
+      - name: Build wasm-mini cross-compiled
+        env:
+          AR: emar
+          CC: emcc
+          CXX: em++
+          NM: emnm
+          RANLIB: emranlib
+          STRIP: emstrip
+        run: |
+          source ~/emsdk/emsdk_env.sh
+          make features
+          make CIBUILD=true NOPLUGINS=true STATIC_BUILD=true USE_GLES2=true -j $(nproc)
+      - name: Set sha8 (non-release)
+        if: startsWith(github.ref, 'refs/tags/') != true
+        id: slug1
+        run: echo "::set-output name=sha8::$(echo ${{ github.sha }} | cut -c1-8)"
+      - name: Set sha8 (release)
+        if: startsWith(github.ref, 'refs/tags/')
+        id: slug2
+        run: echo "::set-output name=sha8::$(echo ${{ github.ref_name }})"
+      - name: Set sha8
+        id: slug
+        run: echo "::set-output name=sha8::$(echo ${{ steps.slug1.outputs.sha8 || steps.slug2.outputs.sha8 }})"
+      - name: Pack binaries
+        run: |
+          cd bin; zip -r -9 ../${{ github.event.repository.name }}-wasm-mini-${{ github.event.pull_request.number || steps.slug.outputs.sha8 }}.zip $(ls *.html *.data *.js *.wasm)
+      - uses: actions/upload-artifact@v2
+        with:
+          name: ${{ github.event.repository.name }}-wasm-mini-${{ github.event.pull_request.number || steps.slug.outputs.sha8 }}
+          path: |
+            *.zip
+      - uses: softprops/action-gh-release@v1
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          tag_name: ${{ github.ref_name }}
+          name: ${{ github.ref_name }}
+          draft: false
+          prerelease: false
+          files: |
+            *.zip
+
   win32:
     runs-on: ubuntu-20.04
     steps:
diff --git a/src/Makefile.cardinal.mk b/src/Makefile.cardinal.mk
index b77dd6cc..efa8b365 100644
--- a/src/Makefile.cardinal.mk
+++ b/src/Makefile.cardinal.mk
@@ -117,8 +117,10 @@ endif
 
 # FIXME
 ifeq ($(WASM),true)
+ifneq ($(STATIC_BUILD),true)
 STATIC_CARLA_PLUGIN_LIBS = -lsndfile -lopus -lFLAC -lvorbisenc -lvorbis -logg -lm
 endif
+endif
 
 EXTRA_DEPENDENCIES = $(RACK_EXTRA_LIBS) $(CARLA_EXTRA_LIBS)
 EXTRA_LIBS = $(RACK_EXTRA_LIBS) $(CARLA_EXTRA_LIBS) $(STATIC_CARLA_PLUGIN_LIBS)
@@ -215,8 +217,10 @@ BASE_FLAGS += -Wno-unused-variable
 # extra linker flags
 
 ifeq ($(WASM),true)
+ifneq ($(STATIC_BUILD),true)
 LINK_FLAGS += --preload-file=./jsfx
 LINK_FLAGS += --preload-file=./lv2
+endif
 LINK_FLAGS += --preload-file=./resources
 LINK_FLAGS += -sALLOW_MEMORY_GROWTH
 LINK_FLAGS += -sINITIAL_MEMORY=64Mb
@@ -341,7 +345,12 @@ vst3: $(VST3_RESOURCES)
 # --------------------------------------------------------------
 # Extra rules for wasm resources
 
-wasm_resources: $(CURDIR)/lv2 $(CURDIR)/resources
+WASM_RESOURCES  = $(CURDIR)/resources
+ifneq ($(STATIC_BUILD),true)
+WASM_RESOURCES += $(CURDIR)/lv2
+endif
+
+wasm_resources: $(WASM_RESOURCES)
 
 $(CURDIR)/lv2: $(LV2_RESOURCES)
 	$(shell wget https://falktx.com/data/wasm-things-2022-08-15.tar.gz && tar xf wasm-things-2022-08-15.tar.gz)