Fix tests, restore Alpine tests, fix PHP 8.1+ deprecation warning (#39)

* Fix test failures because of precision difference

* Restore testing Alpine, fix Alpine dependencies

* Fix config.m4 for building with Alpine

* Address PHP 8.1 deprecation warnings

* git-ignore .dep files

* Delete .dep files

* Run zephir fullclean + zephir generate + build-ext

* Use actions/checkout v3

v2 is deprecated: see
https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default

* Run GitHub Action steps directly within docker containers

.github/workflows/ci-ext.yml

@@ -22,18 +22,72 @@ jobs:
       matrix:
         image:
           - php:7.4-cli
+          - php:7.4-cli-alpine
           - php:8.0-cli
+          - php:8.0-cli-alpine
           - php:8.1-cli
+          - php:8.1-cli-alpine
           - php:8.2-cli
+          - php:8.2-cli-alpine
 
     name: Image ${{ matrix.image }}
     runs-on: ubuntu-latest
+    container: ${{ matrix.image }}
     steps:
-      - name: Pull docker image
-        run: docker pull ${{ matrix.image }}
-
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
+
+      - name: Install system dependencies (Alpine)
+        if: contains(matrix.image, 'alpine')
+        run: |
+          apk update
+          . /etc/os-release
+          case "$VERSION_ID" in
+            3.11.* | 3.12.* | 3.13.* | 3.14.* | 3.15.* | 3.16.* | 3.17.*)
+              apk update && apk add $PHPIZE_DEPS lapack lapack-dev openblas-dev
+              if [ ! -e /usr/lib/liblapacke.so ]; then
+                # Fix for Alpine 3.15, 3.16 and 3.17
+                ln -s /usr/lib/liblapacke.so.3 /usr/lib/liblapacke.so
+              fi
+              ;;
+            *)
+              apk add $PHPIZE_DEPS liblapack lapack-dev openblas-dev
+              ;;
+          esac
+
+      - name: Install system dependencies (Debian)
+        if: ${{ !contains(matrix.image, 'alpine') }}
+        run: |
+          apt-get update -q
+          apt-get install -qy gfortran liblapack-dev libopenblas-dev liblapacke-dev
+
+      - name: Create working directory
+        run: |
+          rm -rf /tmp/tensor-package
+          mkdir /tmp/tensor-package
+
+      - name: Create PECL package
+        run: |
+          cd /tmp/tensor-package
+          pecl package "$GITHUB_WORKSPACE/package.xml"
+
+      - name: Compile PECL package
+        run: |
+          cd /tmp/tensor-package
+          MAKE="make -j$(nproc)" pecl install tensor-*.tgz
+
+      - name: Enable PHP extension
+        run: docker-php-ext-enable tensor
+
+      - name: Check for PHP startup warnings
+        run: |
+          php -d display_errors=stderr -d display_startup_errors=1 -d error_reporting=-1 -r ';' 2>/tmp/php-startup-warnings
+          if [ -s /tmp/php-startup-warnings ]; then
+            echo 'The PHP extension was successfully installed, but PHP raised these warnings:' >&2
+            cat /tmp/php-startup-warnings >&2
+            exit 1
+          fi
+          echo "PHP didn't raise any warnings at startup."
 
-      - name: Compile
-        run: docker run --rm -v "$GITHUB_WORKSPACE:/app" ${{ matrix.image }} /app/.github/workflows/ci-ext.sh
+      - name: Inspect PHP extension
+        run: php --ri tensor

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2

.gitignore

@@ -11,6 +11,7 @@
 *.dSYM
 *.deps
 *.tgz
+*.dep
 
 zephir.phar
 autom4te.cache/

build-ext

@@ -6,42 +6,45 @@ const CONFIG_M4_PATH = './ext/config.m4';
 const EXECINFO_MATCH = "PHP_SUBST(TENSOR_SHARED_LIBADD)\n";
 const EXECINFO_PATCH = <<<'EOT'
 
-	AC_CHECK_FUNC(backtrace_symbols, have_backtrace_symbols=yes, have_backtrace_symbols=no)
-	if test $have_backtrace_symbols = no; then
-		LDFLAGS="${LDFLAGS:-} -lexecinfo"
+	AC_CANONICAL_BUILD
+	if test "$build_os" = linux-musl; then
+		CPPFLAGS="${CPPFLAGS:-} -DALPINE_LINUX"
+	else
+		AC_CHECK_FUNC(backtrace_symbols, have_backtrace_symbols=yes, have_backtrace_symbols=no)
+		if test $have_backtrace_symbols = no; then
+			LDFLAGS="${LDFLAGS:-} -lexecinfo"
+		fi
 	fi
 
 EOT
 ;
 
 chdir(__DIR__);
 
-echo 'Reading config.m4 file';
-
+echo 'Reading config.m4 file... ';
 $configM4Contents = file_get_contents(CONFIG_M4_PATH);
-
 if (!$configM4Contents) {
     fwrite(STDERR, "Failed to read the config.m4 file!\n");
 
     exit(1);
 }
+echo "done.\n";
 
-echo 'Applying libexec patch';
-
+echo 'Applying libexec patch... ';
 if (strpos($configM4Contents, EXECINFO_MATCH) === false) {
-    fwrite(STDERR, "Patch entrypoint not found!\n");
+    fwrite(STDERR, "patch entrypoint not found!\n");
 
     exit(1);
 } elseif (strpos($configM4Contents, trim(EXECINFO_PATCH)) !== false) {
-    echo "Already applied.\n";
+    echo "already applied.\n";
 } else {
     $configM4Contents = str_replace(EXECINFO_MATCH, EXECINFO_MATCH . EXECINFO_PATCH, $configM4Contents);
-}
-
-echo 'Saving config.m4 file';
-
-if (!file_put_contents(CONFIG_M4_PATH, $configM4Contents)) {
-    fwrite(STDERR, "Failed to write the config.m4 file\n");
-
-    exit(1);
+    echo "done.\n";
+    echo 'Saving config.m4 file... ';
+    if (!file_put_contents(CONFIG_M4_PATH, $configM4Contents)) {
+        fwrite(STDERR, "Failed to write the config.m4 file\n");
+
+        exit(1);
+    }
+    echo "done.\n";
 }

ext/config.m4

@@ -42,9 +42,14 @@ if test "$PHP_TENSOR" = "yes"; then
 	done
 	PHP_SUBST(TENSOR_SHARED_LIBADD)
 
-	AC_CHECK_FUNC(backtrace_symbols, have_backtrace_symbols=yes, have_backtrace_symbols=no)
-	if test $have_backtrace_symbols = no; then
-		LDFLAGS="${LDFLAGS:-} -lexecinfo"
+	AC_CANONICAL_BUILD
+	if test "$build_os" = linux-musl; then
+		CPPFLAGS="${CPPFLAGS:-} -DALPINE_LINUX"
+	else
+		AC_CHECK_FUNC(backtrace_symbols, have_backtrace_symbols=yes, have_backtrace_symbols=no)
+		if test $have_backtrace_symbols = no; then
+			LDFLAGS="${LDFLAGS:-} -lexecinfo"
+		fi
 	fi
 
 	old_CPPFLAGS=$CPPFLAGS