Add FreeBSD to CI (#6974)

This is using Cirrus, as none of the CI providers we already use support FreeBSD.

.cirrus.yml

@@ -0,0 +1,27 @@
+env:
+  CIRRUS_CLONE_DEPTH: 1
+  ARCH: amd64
+
+freebsd_instance:
+  image_family: freebsd-13-0
+
+task:
+  name: FREEBSD_DEBUG_NTS
+  install_script:
+    #- sed -i -e 's/quarterly/latest/g' /etc/pkg/FreeBSD.conf
+    #- pkg upgrade -y
+    - pkg install -y autoconf bison gmake re2c icu libiconv png freetype2 enchant2 bzip2 krb5 t1lib gmp tidyp libsodium libzip libxml2 libxslt openssl oniguruma pkgconf webp
+  script:
+    - ./buildconf -f
+    - ./configure --prefix=/usr/local --enable-debug --enable-option-checking=fatal --enable-fpm --with-pdo-sqlite --without-pear --with-bz2 --with-jpeg --with-webp --with-freetype --enable-gd --enable-exif --with-zip --with-zlib --enable-soap --enable-xmlreader --with-xsl --with-libxml --enable-shmop --enable-pcntl --enable-mbstring --with-curl --enable-sockets --with-openssl --with-iconv=/usr/local --enable-bcmath --enable-calendar --enable-ftp --with-kerberos --with-ffi --enable-zend-test --enable-intl --with-mhash --with-sodium --enable-werror --with-config-file-path=/etc --with-config-file-scan-dir=/etc/php.d
+    - gmake -j2
+    - mkdir /etc/php.d
+    - gmake install
+    - echo opcache.enable_cli=1 > /etc/php.d/opcache.ini
+    - echo opcache.protect_memory=1 >> /etc/php.d/opcache.ini
+    # Specify opcache.preload_user as we're running as root.
+    - echo opcache.preload_user=root >> /etc/php.d/opcache.ini
+  tests_script:
+    - export SKIP_IO_CAPTURE_TESTS=1
+    - export CI_NO_IPV6=1
+    - sapi/cli/php run-tests.php -P -q -j2 -g FAIL,XFAIL,BORK,WARN,LEAK,XLEAK,SKIP --offline --show-diff --show-slow 1000 --set-timeout 120 -d zend_extension=opcache.so

ext/pcntl/tests/002.phpt

@@ -8,6 +8,7 @@ pcntl: pcntl_sigprocmask(), pcntl_sigwaitinfo(), pcntl_sigtimedwait()
     elseif (!defined('CLD_EXITED')) die('skip CLD_EXITED not defined');
     elseif (getenv('SKIP_ASAN')) die('skip Fails intermittently under asan/msan');
     elseif (getenv("SKIP_REPEAT")) die("skip cannot be repeated");
+    elseif (str_contains(PHP_OS, 'FreeBSD')) die('skip Results in parallel test runner hang on FreeBSD');
 ?>
 --FILE--
 <?php

ext/standard/tests/streams/proc_open_bug51800_right.phpt

@@ -1,5 +1,11 @@
 --TEST--
 Bug #51800 proc_open on Windows hangs forever, the right way to do it
+--SKIPIF--
+<?php
+if (strpos(PHP_OS, 'FreeBSD') !== false) {
+    die("skip Results in parallel test runner hang on FreeBSD");
+}
+?>
 --FILE--
 <?php
 $callee = __DIR__ . "/process_proc_open_bug51800_right.php";