diff --git a/CHANGELOG.md b/CHANGELOG.md
index a01733bac2..9c8f8f83b7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@ See the [releases page](https://github.com/github/codeql-action/releases) for th
 
 ## [UNRELEASED]
 
+- We are rolling out a feature in October 2023 that will improve the success rate of C/C++ autobuild. [#1889](https://github.com/github/codeql-action/pull/1889)
 - Add a warning to help customers avoid inadvertently analyzing the same CodeQL language in multiple matrix jobs. [#1901](https://github.com/github/codeql-action/pull/1901)
 
 ## 2.21.8 - 19 Sep 2023
diff --git a/lib/autobuild.js b/lib/autobuild.js
index af9818b8a5..81cde957fe 100644
--- a/lib/autobuild.js
+++ b/lib/autobuild.js
@@ -1,8 +1,37 @@
 "use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.runAutobuild = exports.determineAutobuildLanguages = void 0;
+const core = __importStar(require("@actions/core"));
+const actions_util_1 = require("./actions-util");
+const api_client_1 = require("./api-client");
 const codeql_1 = require("./codeql");
+const feature_flags_1 = require("./feature-flags");
 const languages_1 = require("./languages");
+const repository_1 = require("./repository");
+const util_1 = require("./util");
 async function determineAutobuildLanguages(config, logger) {
     // Attempt to find a language to autobuild
     // We want pick the dominant language in the repo from the ones we're able to build
@@ -70,9 +99,38 @@ async function determineAutobuildLanguages(config, logger) {
     return languages;
 }
 exports.determineAutobuildLanguages = determineAutobuildLanguages;
+async function setupCppAutobuild(codeql, logger) {
+    const envVar = feature_flags_1.featureConfig[feature_flags_1.Feature.CppDependencyInstallation].envVar;
+    const featureName = "C++ automatic installation of dependencies";
+    const envDoc = "https://docs.github.com/en/actions/learn-github-actions/variables#defining-environment-variables-for-a-single-workflow";
+    const gitHubVersion = await (0, api_client_1.getGitHubVersion)();
+    const repositoryNwo = (0, repository_1.parseRepositoryNwo)((0, util_1.getRequiredEnvParam)("GITHUB_REPOSITORY"));
+    const features = new feature_flags_1.Features(gitHubVersion, repositoryNwo, (0, actions_util_1.getTemporaryDirectory)(), logger);
+    if (await features.getValue(feature_flags_1.Feature.CppDependencyInstallation, codeql)) {
+        // disable autoinstall on self-hosted runners unless explicitly requested
+        if (process.env["RUNNER_ENVIRONMENT"] === "self-hosted" &&
+            process.env[envVar] !== "true") {
+            logger.info(`Disabling ${featureName} as we are on a self-hosted runner.${(0, actions_util_1.getWorkflowEventName)() !== "dynamic"
+                ? ` To override this, set the ${envVar} environment variable to 'true' in your workflow (see ${envDoc}).`
+                : ""}`);
+            core.exportVariable(envVar, "false");
+        }
+        else {
+            logger.info(`Enabling ${featureName}. This can be disabled by setting the ${envVar} environment variable to 'false' (see ${envDoc}).`);
+            core.exportVariable(envVar, "true");
+        }
+    }
+    else {
+        logger.info(`Disabling ${featureName}.`);
+        core.exportVariable(envVar, "false");
+    }
+}
 async function runAutobuild(language, config, logger) {
     logger.startGroup(`Attempting to automatically build ${language} code`);
     const codeQL = await (0, codeql_1.getCodeQL)(config.codeQLCmd);
+    if (language === languages_1.Language.cpp) {
+        await setupCppAutobuild(codeQL, logger);
+    }
     await codeQL.runAutobuild(language);
     logger.endGroup();
 }
diff --git a/lib/autobuild.js.map b/lib/autobuild.js.map
index 06638fbd8a..f730e71540 100644
--- a/lib/autobuild.js.map
+++ b/lib/autobuild.js.map
@@ -1 +1 @@
-{"version":3,"file":"autobuild.js","sourceRoot":"","sources":["../src/autobuild.ts"],"names":[],"mappings":";;;AAAA,qCAAqC;AAErC,2CAAyD;AAGlD,KAAK,UAAU,2BAA2B,CAC/C,MAA0B,EAC1B,MAAc;IAEd,0CAA0C;IAC1C,mFAAmF;IACnF,oFAAoF;IACpF,4EAA4E;IAC5E,MAAM,kBAAkB,GAAG,MAAM,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,EAAE,CACvD,IAAA,4BAAgB,EAAC,CAAC,CAAC,CACpB,CAAC;IAEF,IAAI,CAAC,kBAAkB,EAAE;QACvB,MAAM,CAAC,IAAI,CACT,iEAAiE,CAClE,CAAC;QACF,OAAO,SAAS,CAAC;KAClB;IAED;;;;;;;;;;;;;;;;;;;;;;;;;;OA0BG;IACH,MAAM,2BAA2B,GAAG,kBAAkB,CAAC,MAAM,CAC3D,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,KAAK,oBAAQ,CAAC,EAAE,CACzB,CAAC;IAEF,MAAM,SAAS,GAAe,EAAE,CAAC;IACjC,yEAAyE;IACzE,UAAU;IACV,IAAI,2BAA2B,CAAC,CAAC,CAAC,KAAK,SAAS,EAAE;QAChD,SAAS,CAAC,IAAI,CAAC,2BAA2B,CAAC,CAAC,CAAC,CAAC,CAAC;KAChD;IACD,uEAAuE;IACvE,wCAAwC;IACxC,IAAI,kBAAkB,CAAC,MAAM,KAAK,2BAA2B,CAAC,MAAM,EAAE;QACpE,SAAS,CAAC,IAAI,CAAC,oBAAQ,CAAC,EAAE,CAAC,CAAC;KAC7B;IAED,MAAM,CAAC,KAAK,CAAC,kBAAkB,SAAS,CAAC,IAAI,CAAC,OAAO,CAAC,GAAG,CAAC,CAAC;IAE3D,2EAA2E;IAC3E,4EAA4E;IAC5E,2CAA2C;IAC3C,uEAAuE;IACvE,2EAA2E;IAC3E,uEAAuE;IACvE,yCAAyC;IACzC,IAAI,2BAA2B,CAAC,MAAM,GAAG,CAAC,EAAE;QAC1C,MAAM,CAAC,OAAO,CACZ,oCAAoC,SAAS,CAAC,IAAI,CAChD,OAAO,CACR,8BAA8B,2BAA2B;aACvD,KAAK,CAAC,CAAC,CAAC;aACR,IAAI,CACH,OAAO,CACR,kFAAkF;YACnF,4BAA4B;YAC5B,0NAA0N,CAC7N,CAAC;KACH;IAED,OAAO,SAAS,CAAC;AACnB,CAAC;AAtFD,kEAsFC;AAEM,KAAK,UAAU,YAAY,CAChC,QAAkB,EAClB,MAA0B,EAC1B,MAAc;IAEd,MAAM,CAAC,UAAU,CAAC,qCAAqC,QAAQ,OAAO,CAAC,CAAC;IACxE,MAAM,MAAM,GAAG,MAAM,IAAA,kBAAS,EAAC,MAAM,CAAC,SAAS,CAAC,CAAC;IACjD,MAAM,MAAM,CAAC,YAAY,CAAC,QAAQ,CAAC,CAAC;IACpC,MAAM,CAAC,QAAQ,EAAE,CAAC;AACpB,CAAC;AATD,oCASC"}
\ No newline at end of file
+{"version":3,"file":"autobuild.js","sourceRoot":"","sources":["../src/autobuild.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,oDAAsC;AAEtC,iDAA6E;AAC7E,6CAAgD;AAChD,qCAA6C;AAE7C,mDAAmE;AACnE,2CAAyD;AAEzD,6CAAkD;AAClD,iCAA6C;AAEtC,KAAK,UAAU,2BAA2B,CAC/C,MAA0B,EAC1B,MAAc;IAEd,0CAA0C;IAC1C,mFAAmF;IACnF,oFAAoF;IACpF,4EAA4E;IAC5E,MAAM,kBAAkB,GAAG,MAAM,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,EAAE,CACvD,IAAA,4BAAgB,EAAC,CAAC,CAAC,CACpB,CAAC;IAEF,IAAI,CAAC,kBAAkB,EAAE;QACvB,MAAM,CAAC,IAAI,CACT,iEAAiE,CAClE,CAAC;QACF,OAAO,SAAS,CAAC;KAClB;IAED;;;;;;;;;;;;;;;;;;;;;;;;;;OA0BG;IACH,MAAM,2BAA2B,GAAG,kBAAkB,CAAC,MAAM,CAC3D,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,KAAK,oBAAQ,CAAC,EAAE,CACzB,CAAC;IAEF,MAAM,SAAS,GAAe,EAAE,CAAC;IACjC,yEAAyE;IACzE,UAAU;IACV,IAAI,2BAA2B,CAAC,CAAC,CAAC,KAAK,SAAS,EAAE;QAChD,SAAS,CAAC,IAAI,CAAC,2BAA2B,CAAC,CAAC,CAAC,CAAC,CAAC;KAChD;IACD,uEAAuE;IACvE,wCAAwC;IACxC,IAAI,kBAAkB,CAAC,MAAM,KAAK,2BAA2B,CAAC,MAAM,EAAE;QACpE,SAAS,CAAC,IAAI,CAAC,oBAAQ,CAAC,EAAE,CAAC,CAAC;KAC7B;IAED,MAAM,CAAC,KAAK,CAAC,kBAAkB,SAAS,CAAC,IAAI,CAAC,OAAO,CAAC,GAAG,CAAC,CAAC;IAE3D,2EAA2E;IAC3E,4EAA4E;IAC5E,2CAA2C;IAC3C,uEAAuE;IACvE,2EAA2E;IAC3E,uEAAuE;IACvE,yCAAyC;IACzC,IAAI,2BAA2B,CAAC,MAAM,GAAG,CAAC,EAAE;QAC1C,MAAM,CAAC,OAAO,CACZ,oCAAoC,SAAS,CAAC,IAAI,CAChD,OAAO,CACR,8BAA8B,2BAA2B;aACvD,KAAK,CAAC,CAAC,CAAC;aACR,IAAI,CACH,OAAO,CACR,kFAAkF;YACnF,4BAA4B;YAC5B,0NAA0N,CAC7N,CAAC;KACH;IAED,OAAO,SAAS,CAAC;AACnB,CAAC;AAtFD,kEAsFC;AAED,KAAK,UAAU,iBAAiB,CAAC,MAAc,EAAE,MAAc;IAC7D,MAAM,MAAM,GAAG,6BAAa,CAAC,uBAAO,CAAC,yBAAyB,CAAC,CAAC,MAAM,CAAC;IACvE,MAAM,WAAW,GAAG,4CAA4C,CAAC;IACjE,MAAM,MAAM,GACV,wHAAwH,CAAC;IAC3H,MAAM,aAAa,GAAG,MAAM,IAAA,6BAAgB,GAAE,CAAC;IAC/C,MAAM,aAAa,GAAG,IAAA,+BAAkB,EACtC,IAAA,0BAAmB,EAAC,mBAAmB,CAAC,CACzC,CAAC;IACF,MAAM,QAAQ,GAAG,IAAI,wBAAQ,CAC3B,aAAa,EACb,aAAa,EACb,IAAA,oCAAqB,GAAE,EACvB,MAAM,CACP,CAAC;IACF,IAAI,MAAM,QAAQ,CAAC,QAAQ,CAAC,uBAAO,CAAC,yBAAyB,EAAE,MAAM,CAAC,EAAE;QACtE,yEAAyE;QACzE,IACE,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,KAAK,aAAa;YACnD,OAAO,CAAC,GAAG,CAAC,MAAM,CAAC,KAAK,MAAM,EAC9B;YACA,MAAM,CAAC,IAAI,CACT,aAAa,WAAW,sCACtB,IAAA,mCAAoB,GAAE,KAAK,SAAS;gBAClC,CAAC,CAAC,8BAA8B,MAAM,yDAAyD,MAAM,IAAI;gBACzG,CAAC,CAAC,EACN,EAAE,CACH,CAAC;YACF,IAAI,CAAC,cAAc,CAAC,MAAM,EAAE,OAAO,CAAC,CAAC;SACtC;aAAM;YACL,MAAM,CAAC,IAAI,CACT,YAAY,WAAW,yCAAyC,MAAM,yCAAyC,MAAM,IAAI,CAC1H,CAAC;YACF,IAAI,CAAC,cAAc,CAAC,MAAM,EAAE,MAAM,CAAC,CAAC;SACrC;KACF;SAAM;QACL,MAAM,CAAC,IAAI,CAAC,aAAa,WAAW,GAAG,CAAC,CAAC;QACzC,IAAI,CAAC,cAAc,CAAC,MAAM,EAAE,OAAO,CAAC,CAAC;KACtC;AACH,CAAC;AAEM,KAAK,UAAU,YAAY,CAChC,QAAkB,EAClB,MAA0B,EAC1B,MAAc;IAEd,MAAM,CAAC,UAAU,CAAC,qCAAqC,QAAQ,OAAO,CAAC,CAAC;IACxE,MAAM,MAAM,GAAG,MAAM,IAAA,kBAAS,EAAC,MAAM,CAAC,SAAS,CAAC,CAAC;IACjD,IAAI,QAAQ,KAAK,oBAAQ,CAAC,GAAG,EAAE;QAC7B,MAAM,iBAAiB,CAAC,MAAM,EAAE,MAAM,CAAC,CAAC;KACzC;IACD,MAAM,MAAM,CAAC,YAAY,CAAC,QAAQ,CAAC,CAAC;IACpC,MAAM,CAAC,QAAQ,EAAE,CAAC;AACpB,CAAC;AAZD,oCAYC"}
\ No newline at end of file
diff --git a/lib/debug-artifacts.js b/lib/debug-artifacts.js
index 45fce61d01..f49c5e9abc 100644
--- a/lib/debug-artifacts.js
+++ b/lib/debug-artifacts.js
@@ -56,7 +56,7 @@ async function uploadDebugArtifacts(toUpload, rootDir, artifactName) {
             core.info("Could not parse user-specified `matrix` input into JSON. The debug artifact will not be named with the user's `matrix` input.");
         }
     }
-    await artifact.create().uploadArtifact(sanitizeArifactName(`${artifactName}${suffix}`), toUpload.map((file) => path.normalize(file)), path.normalize(rootDir));
+    await artifact.create().uploadArtifact(sanitizeArifactName(`${artifactName}${suffix}`), toUpload.map((file) => path.normalize(file)), path.normalize(rootDir), { continueOnError: true });
 }
 exports.uploadDebugArtifacts = uploadDebugArtifacts;
 async function uploadSarifDebugArtifact(config, outputDir) {
diff --git a/lib/debug-artifacts.js.map b/lib/debug-artifacts.js.map
index 9e3d2a4f70..84587b3919 100644
--- a/lib/debug-artifacts.js.map
+++ b/lib/debug-artifacts.js.map
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/lib/feature-flags.js b/lib/feature-flags.js
index eb927f3d77..6d738db669 100644
--- a/lib/feature-flags.js
+++ b/lib/feature-flags.js
@@ -41,9 +41,10 @@ exports.CODEQL_VERSION_BUNDLE_SEMANTICALLY_VERSIONED = "2.13.4";
  */
 exports.CODEQL_VERSION_ANALYSIS_SUMMARY_V2 = "2.14.0";
 /**
- * Versions 2.14.0+ of the CodeQL CLI support intra-layer parallelism (aka fine-grained parallelism) options.
+ * Versions 2.14.0+ of the CodeQL CLI support intra-layer parallelism (aka fine-grained parallelism) options, but we
+ * limit to 2.14.6 onwards, since that's the version that has mitigations against OOM failures.
  */
-exports.CODEQL_VERSION_INTRA_LAYER_PARALLELISM = "2.14.0";
+exports.CODEQL_VERSION_INTRA_LAYER_PARALLELISM = "2.14.6";
 /**
  * Feature enablement as returned by the GitHub API endpoint.
  *
@@ -54,6 +55,7 @@ var Feature;
     Feature["AnalysisSummaryV2Enabled"] = "analysis_summary_v2_enabled";
     Feature["CliConfigFileEnabled"] = "cli_config_file_enabled";
     Feature["CodeqlJavaLombokEnabled"] = "codeql_java_lombok_enabled";
+    Feature["CppDependencyInstallation"] = "cpp_dependency_installation_enabled";
     Feature["DisableKotlinAnalysisEnabled"] = "disable_kotlin_analysis_enabled";
     Feature["DisablePythonDependencyInstallationEnabled"] = "disable_python_dependency_installation_enabled";
     Feature["EvaluatorIntraLayerParallelismEnabled"] = "evaluator_intra_layer_parallelism_enabled";
@@ -73,6 +75,11 @@ exports.featureConfig = {
         minimumVersion: "2.14.0",
         defaultValue: false,
     },
+    [Feature.CppDependencyInstallation]: {
+        envVar: "CODEQL_EXTRACTOR_CPP_AUTOINSTALL_DEPENDENCIES",
+        minimumVersion: "2.15.0",
+        defaultValue: false,
+    },
     [Feature.DisableKotlinAnalysisEnabled]: {
         envVar: "CODEQL_DISABLE_KOTLIN_ANALYSIS",
         minimumVersion: undefined,
diff --git a/lib/feature-flags.js.map b/lib/feature-flags.js.map
index 9d51842e2c..e180f3cf57 100644
--- a/lib/feature-flags.js.map
+++ b/lib/feature-flags.js.map
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/queries/default-setup-environment-variables.ql b/queries/default-setup-environment-variables.ql
index 6a21158130..e456409419 100644
--- a/queries/default-setup-environment-variables.ql
+++ b/queries/default-setup-environment-variables.ql
@@ -23,7 +23,7 @@ predicate isSafeForDefaultSetup(string envVar) {
       "GITHUB_BASE_REF", "GITHUB_EVENT_NAME", "GITHUB_JOB", "GITHUB_RUN_ATTEMPT", "GITHUB_RUN_ID",
       "GITHUB_SHA", "GITHUB_REPOSITORY", "GITHUB_SERVER_URL", "GITHUB_TOKEN", "GITHUB_WORKFLOW",
       "GITHUB_WORKSPACE", "GOFLAGS", "ImageVersion", "JAVA_TOOL_OPTIONS", "RUNNER_ARCH",
-      "RUNNER_NAME", "RUNNER_OS", "RUNNER_TEMP", "RUNNER_TOOL_CACHE"
+      "RUNNER_ENVIRONMENT", "RUNNER_NAME", "RUNNER_OS", "RUNNER_TEMP", "RUNNER_TOOL_CACHE"
     ]
 }
 
diff --git a/src/autobuild.ts b/src/autobuild.ts
index ff4f9b48ab..4585a8288f 100644
--- a/src/autobuild.ts
+++ b/src/autobuild.ts
@@ -1,7 +1,14 @@
-import { getCodeQL } from "./codeql";
+import * as core from "@actions/core";
+
+import { getTemporaryDirectory, getWorkflowEventName } from "./actions-util";
+import { getGitHubVersion } from "./api-client";
+import { CodeQL, getCodeQL } from "./codeql";
 import * as configUtils from "./config-utils";
-import { Language, isTracedLanguage } from "./languages";
+import { Feature, featureConfig, Features } from "./feature-flags";
+import { isTracedLanguage, Language } from "./languages";
 import { Logger } from "./logging";
+import { parseRepositoryNwo } from "./repository";
+import { getRequiredEnvParam } from "./util";
 
 export async function determineAutobuildLanguages(
   config: configUtils.Config,
@@ -91,6 +98,47 @@ export async function determineAutobuildLanguages(
   return languages;
 }
 
+async function setupCppAutobuild(codeql: CodeQL, logger: Logger) {
+  const envVar = featureConfig[Feature.CppDependencyInstallation].envVar;
+  const featureName = "C++ automatic installation of dependencies";
+  const envDoc =
+    "https://docs.github.com/en/actions/learn-github-actions/variables#defining-environment-variables-for-a-single-workflow";
+  const gitHubVersion = await getGitHubVersion();
+  const repositoryNwo = parseRepositoryNwo(
+    getRequiredEnvParam("GITHUB_REPOSITORY"),
+  );
+  const features = new Features(
+    gitHubVersion,
+    repositoryNwo,
+    getTemporaryDirectory(),
+    logger,
+  );
+  if (await features.getValue(Feature.CppDependencyInstallation, codeql)) {
+    // disable autoinstall on self-hosted runners unless explicitly requested
+    if (
+      process.env["RUNNER_ENVIRONMENT"] === "self-hosted" &&
+      process.env[envVar] !== "true"
+    ) {
+      logger.info(
+        `Disabling ${featureName} as we are on a self-hosted runner.${
+          getWorkflowEventName() !== "dynamic"
+            ? ` To override this, set the ${envVar} environment variable to 'true' in your workflow (see ${envDoc}).`
+            : ""
+        }`,
+      );
+      core.exportVariable(envVar, "false");
+    } else {
+      logger.info(
+        `Enabling ${featureName}. This can be disabled by setting the ${envVar} environment variable to 'false' (see ${envDoc}).`,
+      );
+      core.exportVariable(envVar, "true");
+    }
+  } else {
+    logger.info(`Disabling ${featureName}.`);
+    core.exportVariable(envVar, "false");
+  }
+}
+
 export async function runAutobuild(
   language: Language,
   config: configUtils.Config,
@@ -98,6 +146,9 @@ export async function runAutobuild(
 ) {
   logger.startGroup(`Attempting to automatically build ${language} code`);
   const codeQL = await getCodeQL(config.codeQLCmd);
+  if (language === Language.cpp) {
+    await setupCppAutobuild(codeQL, logger);
+  }
   await codeQL.runAutobuild(language);
   logger.endGroup();
 }
diff --git a/src/debug-artifacts.ts b/src/debug-artifacts.ts
index aeccf5e9e9..ac782a11d2 100644
--- a/src/debug-artifacts.ts
+++ b/src/debug-artifacts.ts
@@ -49,6 +49,7 @@ export async function uploadDebugArtifacts(
     sanitizeArifactName(`${artifactName}${suffix}`),
     toUpload.map((file) => path.normalize(file)),
     path.normalize(rootDir),
+    { continueOnError: true },
   );
 }
 
diff --git a/src/feature-flags.ts b/src/feature-flags.ts
index 0d62c806b7..35830ab365 100644
--- a/src/feature-flags.ts
+++ b/src/feature-flags.ts
@@ -24,9 +24,10 @@ export const CODEQL_VERSION_BUNDLE_SEMANTICALLY_VERSIONED = "2.13.4";
 export const CODEQL_VERSION_ANALYSIS_SUMMARY_V2 = "2.14.0";
 
 /**
- * Versions 2.14.0+ of the CodeQL CLI support intra-layer parallelism (aka fine-grained parallelism) options.
+ * Versions 2.14.0+ of the CodeQL CLI support intra-layer parallelism (aka fine-grained parallelism) options, but we
+ * limit to 2.14.6 onwards, since that's the version that has mitigations against OOM failures.
  */
-export const CODEQL_VERSION_INTRA_LAYER_PARALLELISM = "2.14.0";
+export const CODEQL_VERSION_INTRA_LAYER_PARALLELISM = "2.14.6";
 
 export interface CodeQLDefaultVersionInfo {
   cliVersion: string;
@@ -51,6 +52,7 @@ export enum Feature {
   AnalysisSummaryV2Enabled = "analysis_summary_v2_enabled",
   CliConfigFileEnabled = "cli_config_file_enabled",
   CodeqlJavaLombokEnabled = "codeql_java_lombok_enabled",
+  CppDependencyInstallation = "cpp_dependency_installation_enabled",
   DisableKotlinAnalysisEnabled = "disable_kotlin_analysis_enabled",
   DisablePythonDependencyInstallationEnabled = "disable_python_dependency_installation_enabled",
   EvaluatorIntraLayerParallelismEnabled = "evaluator_intra_layer_parallelism_enabled",
@@ -74,6 +76,11 @@ export const featureConfig: Record<
     minimumVersion: "2.14.0",
     defaultValue: false,
   },
+  [Feature.CppDependencyInstallation]: {
+    envVar: "CODEQL_EXTRACTOR_CPP_AUTOINSTALL_DEPENDENCIES",
+    minimumVersion: "2.15.0",
+    defaultValue: false,
+  },
   [Feature.DisableKotlinAnalysisEnabled]: {
     envVar: "CODEQL_DISABLE_KOTLIN_ANALYSIS",
     minimumVersion: undefined,