[WIP] Multi architecture support

.github/workflows/compile.yml

@@ -1,18 +1,98 @@
-name: Compile secp256k1 native code
+name: Compile secp256k1 native library
 
 on:
-  push:
+  pull_request:
     branches:
     - master
+  push:
+    branches:
+    - trying
+    - staging
 
 jobs:
   compile:
-    name: Compile secp256k1 native code
+    name: Compile secp256k1
     strategy:
+      fail-fast: false
       matrix:
-        os: [ubuntu-22.04, macos-11]
+        include:
+        # Linux
+        # - name: linux
+        #   os: ubuntu-22.04
+        #   arch: amd64
+        - name: linux
+          os: ubuntu-22.04
+          arch: aarch64
+        # MacOS
+        # - name: macos
+        #   os: macos-11
+        #   arch: amd64
+        - name: macos
+          os: macos-11
+          arch: aarch64
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3
+      with:
+        submodules: 'recursive'
+
+    - name: Install dependencies ubuntu
+      if: matrix.name == 'linux'
+      run: |
+        uname -a
+        sudo apt-get update
+        sudo apt-get install -y build-essential libtool
+        sudo apt-get install -y gcc-aarch64-linux-gnu
+        export DEBIAN_FRONTEND=noninteractive
+        sudo apt-get install -y openjdk-17-jdk-headless
+
+    - name: Install dependencies macos
+      if: matrix.name == 'macos'
+      run: |
+        uname -a
+        brew install automake libtool
+        brew install openjdk@17
+        sudo ln -sfn /usr/local/opt/openjdk@17/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-17.jdk
+        echo 'export PATH="/usr/local/opt/openjdk@17/bin:$PATH"' >> /Users/runner/.bash_profile
+        export CPPFLAGS="-I/usr/local/opt/openjdk@17/include"
+
+        brew tap messense/macos-cross-toolchains
+        # install aarch64-unknown-linux-gnu toolchain
+        brew install aarch64-unknown-linux-gnu
+
+        # brew install aarch64-elf-gcc
 
-  # TODO: add release job
+        # brew tap osx-cross/arm
+        # brew install arm-gcc-bin
+
+    - name: Build native code
+      if: matrix.arch == 'amd64'
+      run: |
+        ./compile.sh
+
+    - name: Build native code - Linux aarch64
+      if: (matrix.os == 'linux') && (matrix.arch == 'aarch64')
+      run: |
+        ./compile.sh aarch64-linux-gnu
+
+    - name: Build native code - MacOS aarch64
+      if: ${{ (matrix.os == 'macos') && (matrix.arch == 'aarch64') }}
+      run: |
+        ./compile.sh aarch64-unknown-linux-gnu
+
+    - name: Export artifacts linux
+      uses: actions/upload-artifact@v3
+      with:
+        name: ${{ matrix.name }}-${{ matrix.arch }}
+        path: ./secp256k1-tmp/.libs/
+
+  # Job to notify bors when run is successful. Skipped and cancelled job is considered
+  # as failure. More info https://github.com/bors-ng/bors-ng/issues/1115.
+  bors_success:
+    name: bors build finished
+    if: ${{ success() }}
+    needs:
+    - compile
+    runs-on: ubuntu-latest
+    steps:
+    - run: exit 0

compile.sh

@@ -2,6 +2,11 @@
 
 set -e
 
+# To cross compile to aarch64 use "arm" as a first argument
+# Example:
+#   ./compile.sh arm
+ARCH_HOST="$1"
+
 cp -r secp256k1/ secp256k1-tmp/
 
 pushd secp256k1-tmp/
@@ -16,8 +21,20 @@ cp ../jni/configure.ac configure.ac
 
 # Compile secp256k1 native code
 ./autogen.sh
-./configure --enable-jni --enable-module-ecdh --enable-experimental --enable-module-schnorrsig --enable-module-ecdsa-adaptor
+
+if [[ ! "$ARCH_HOST" =~ "" ]]; then
+  echo "Cross compiling for ARM CPU..."
+  # ./configure --enable-jni --enable-module-ecdh --host=aarch64-linux-gnu
+  # ./configure --enable-jni --enable-module-ecdh --host=aarch64-linux-gnu --enable-experimental --with-asm=arm
+  # ./configure --enable-jni --enable-module-ecdh --host=aarch64-linux-gnu --with-asm=no
+  ./configure --enable-jni --enable-module-ecdh --host=$ARCH_HOST --with-asm=no
+else
+  ./configure --enable-jni --enable-module-ecdh
+fi
+# ./configure --enable-jni --enable-module-ecdh --enable-experimental --enable-module-schnorrsig
 # ./configure --enable-jni --enable-module-ecdh
 make CFLAGS="-std=c99"
 make
-make check
+if [[ "$ARCH_HOST" =~ "" ]]; then
+  make check
+fi

jni/build-aux/m4/ax_jni_include_dir.m4

@@ -92,22 +92,26 @@ _AS_ECHO_LOG([_JINC=$_JINC])
 # -> ../../CurrentJDK/Headers/jni.h.
 AC_CACHE_CHECK(jni headers, ac_cv_jni_header_path,
 [
-  if test -f "$_JINC/jni.h"; then
+  if test -f "/Library/Java/JavaVirtualMachines/openjdk-17.jdk/Contents/Home/include/jni.h"; then
+    ac_cv_jni_header_path="/Library/Java/JavaVirtualMachines/openjdk-17.jdk/Contents/Home/include \
+      /Library/Java/JavaVirtualMachines/openjdk-17.jdk/Contents/Home/include/darwin"
+    JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $ac_cv_jni_header_path"
+  elif test -f "$_JINC/jni.h"; then
+    echo _JINC/jni.h: "$_JINC/jni.h"
+
     ac_cv_jni_header_path="$_JINC"
     JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $ac_cv_jni_header_path"
   else
     _JTOPDIR=`echo "$_JTOPDIR" | sed -e 's:/[[^/]]*$::'`
     if test -f "$_JTOPDIR/include/jni.h"; then
+      echo _JTOPDIR/include/jni.h: "$_JTOPDIR/include/jni.h"
+
       ac_cv_jni_header_path="$_JTOPDIR/include"
       JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $ac_cv_jni_header_path"
+
+      echo JNI_INCLUDE_DIRS: "$JNI_INCLUDE_DIRS"
     else
-      if test -f "/Library/Java/JavaVirtualMachines/openjdk-17.jdk/Contents/Home/include/jni.h"; then
-        ac_cv_jni_header_path="/Library/Java/JavaVirtualMachines/openjdk-17.jdk/Contents/Home/include \
-         /Library/Java/JavaVirtualMachines/openjdk-17.jdk/Contents/Home/include/darwin"
-        JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $ac_cv_jni_header_path"
-      else
-        ac_cv_jni_header_path=none
-      fi
+      ac_cv_jni_header_path=none
     fi
   fi
 ])