PHPC-2433: Test PHP 8.4 on Evergreen (#1721)

* PHPC-2433: Test PHP 8.4 on Evergreen

* Skip PHP 8.4 on RHEL PPC/Zseries

Author: alcaeus

.evergreen/config/build-task-groups.yml

@@ -19,6 +19,17 @@ task_groups:
     tasks:
       - ".build"
 
+  # TODO: Remove task group once PHP 8.4 is available on PPC and Zseries
+  - name: "build-all-php-except-8.4"
+    # Keep this number in sync with the number of PHP versions to allow for parallel builds
+    max_hosts: 4
+    setup_task: *build_setup
+    setup_task_can_fail_task: true
+    setup_task_timeout_secs: 1800
+    teardown_task: *build_teardown
+    tasks:
+      - ".build !.php8.4"
+
   # Builds all versions of PHP that support OpenSSL 3 (PHP 8.1+)
   - name: "build-php-openssl3"
     # Keep this number in sync with the number of PHP versions to allow for parallel builds

.evergreen/config/build-variants.yml

@@ -29,7 +29,8 @@ buildvariants:
     tags: ["build", "rhel", "zseries", "tag"]
     run_on: rhel8-zseries-small
     tasks:
-      - name: "build-all-php"
+      # TODO: Re-enable PHP 8.4 once it's available on PPC and Zseries
+      - name: "build-all-php-except-8.4"
   - name: build-rhel8-arm64
     display_name: "Build: RHEL 8 ARM64"
     tags: ["build", "rhel", "arm64", "tag"]
@@ -41,7 +42,8 @@ buildvariants:
     tags: ["build", "rhel", "power8", "tag"]
     run_on: rhel8-power-large
     tasks:
-      - name: "build-all-php"
+      # TODO: Re-enable PHP 8.4 once it's available on PPC and Zseries
+      - name: "build-all-php-except-8.4"
   - name: build-rhel8
     display_name: "Build: RHEL 8 x64"
     tags: ["build", "rhel", "x64", "pr", "tag"]

.evergreen/config/generate-config.php

@@ -3,6 +3,7 @@
 
 // Supported PHP versions. Add new versions to the beginning of the list
 $modernPhpVersions = [
+    '8.4',
     '8.3',
     '8.2',
     '8.1',
@@ -26,7 +27,9 @@
     '4.0',
 ];
 
-$latestPhpVersion = max($supportedPhpVersions);
+// TODO: Change when PHP 8.4 is stable
+// $latestPhpVersion = max($supportedPhpVersions);
+$latestPhpVersion = '8.3';
 
 // Only test the latest PHP version for libmongoc
 $libmongocBuildPhpVersions = [ $latestPhpVersion ];
@@ -112,4 +115,3 @@ function generateConfigs(
 
     return '.evergreen/config' . $filename;
 }
-