build actions for github

.github/workflows/build.yml

@@ -0,0 +1,53 @@
+name: build
+
+on: [push, pull_request]
+
+jobs:
+  linux:
+    strategy:
+      matrix:
+        target: [linux-arm64, linux-armhf, linux-i686, linux-riscv64, linux-x86_64]
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - uses: distrho/dpf-makefile-action@v1
+        with:
+          target: ${{ matrix.target }}
+
+  macos:
+    strategy:
+      matrix:
+        target: [macos-intel, macos-universal]
+    runs-on: macos-13
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - uses: distrho/dpf-makefile-action@v1
+        with:
+          target: ${{ matrix.target }}
+
+  windows:
+    strategy:
+      matrix:
+        target: [win32, win64]
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - uses: distrho/dpf-makefile-action@v1
+        with:
+          target: ${{ matrix.target }}
+
+#  pluginval:
+#    runs-on: ubuntu-20.04
+#    steps:
+#      - uses: actions/checkout@v4
+#        with:
+#          submodules: recursive
+#      - uses: distrho/dpf-makefile-action@v1
+#        with:
+#          target: pluginval

README.md

@@ -20,7 +20,16 @@ and build alphaOsc:
 
     make
 
-This will compile the jack standalone version and LV2 version. It ought to be possible to also compile VST/VST3 and AU versions but these have not yet been tested.
+This will compile the jack standalone version, and LV2, VST2, and VST3 versions. It ought to be possible to also compile VST/VST3 and AU versions for Windows and Mac OS but these have not yet been tested. The github runner currently reports them as successfully built.
+
+Windows versions may be built with:
+
+    ( cd dpf; make clean ) # note the brackets
+    make clean
+    make mingw64
+    # or make mingw32 if you want 32-bit
+
+This appears to work, in limited testing.
 
 Installing
 ----------

plugin/Makefile

@@ -24,6 +24,6 @@ SKIP_NATIVE_AUDIO_FALLBACK = true
 
 include ../dpf/Makefile.plugins.mk
 
-TARGETS +=  jack lv2_sep
+TARGETS +=  jack lv2_sep vst2 vst3
 
 all: $(TARGETS)

plugin/alphaosc.cpp

@@ -39,7 +39,7 @@ void AlphaOsc::activate() {
 
 // Processing function
 void AlphaOsc::run(const float **, float **outputs, uint32_t frames, const MidiEvent *midiEvents, uint32_t midiEventCount) {
-    bzero(outputs[0], sizeof(float) * frames);
+    memset(outputs[0], 0, sizeof(float) * frames);
 
     // cast unused parameters to void for now to stop the compiler complaining
     //(void)midiEventCount;