diff --git a/.github/workflows/__cpp-deptrace-disabled.yml b/.github/workflows/__cpp-deptrace-disabled.yml
new file mode 100644
index 0000000000..cf6dced2be
--- /dev/null
+++ b/.github/workflows/__cpp-deptrace-disabled.yml
@@ -0,0 +1,78 @@
+# Warning: This file is generated automatically, and should not be modified.
+# Instead, please modify the template in the pr-checks directory and run:
+#     (cd pr-checks; pip install ruamel.yaml@0.17.31 && python3 sync.py)
+# to regenerate this file.
+
+name: 'PR Check - C/C++: disabling autoinstalling dependencies (Linux)'
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  GO111MODULE: auto
+  CODEQL_EXTRACTOR_JAVA_AGENT_DISABLE_KOTLIN: 'true'
+on:
+  push:
+    branches:
+    - main
+    - releases/v2
+  pull_request:
+    types:
+    - opened
+    - synchronize
+    - reopened
+    - ready_for_review
+  workflow_dispatch: {}
+jobs:
+  cpp-deptrace-disabled:
+    strategy:
+      matrix:
+        include:
+        - os: ubuntu-latest
+          version: latest
+        - os: ubuntu-latest
+          version: default
+        - os: ubuntu-latest
+          version: nightly-latest
+    name: 'C/C++: disabling autoinstalling dependencies (Linux)'
+    permissions:
+      contents: read
+      security-events: write
+    timeout-minutes: 45
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v4
+    - name: Prepare test
+      id: prepare-test
+      uses: ./.github/actions/prepare-test
+      with:
+        version: ${{ matrix.version }}
+        use-all-platform-bundle: 'false'
+    - name: Set environment variable for Swift enablement
+      if: >-
+        runner.os != 'Windows' && (
+            matrix.version == '20220908' ||
+            matrix.version == '20221211'
+        )
+      shell: bash
+      run: echo "CODEQL_ENABLE_EXPERIMENTAL_FEATURES_SWIFT=true" >> $GITHUB_ENV
+    - name: Test setup
+      shell: bash
+      run: |
+        cp -a ../action/tests/cpp-autobuild autobuild-dir
+    - uses: ./../action/init
+      with:
+        languages: cpp
+        tools: ${{ steps.prepare-test.outputs.tools-url }}
+    - uses: ./../action/autobuild
+      with:
+        working-directory: autobuild-dir
+      env:
+        CODEQL_EXTRACTOR_CPP_AUTOINSTALL_DEPENDENCIES: false
+    - shell: bash
+      run: |
+        if ls /usr/bin/errno; then
+          echo "C/C++ autobuild installed errno, but it should not have since auto-install dependencies is disabled."
+          exit 1
+        fi
+    env:
+      DOTNET_GENERATE_ASPNET_CERTIFICATE: 'false'
+      CODEQL_ACTION_TEST_MODE: true
diff --git a/.github/workflows/__cpp-deptrace-enabled-on-macos.yml b/.github/workflows/__cpp-deptrace-enabled-on-macos.yml
new file mode 100644
index 0000000000..97ab748d83
--- /dev/null
+++ b/.github/workflows/__cpp-deptrace-enabled-on-macos.yml
@@ -0,0 +1,76 @@
+# Warning: This file is generated automatically, and should not be modified.
+# Instead, please modify the template in the pr-checks directory and run:
+#     (cd pr-checks; pip install ruamel.yaml@0.17.31 && python3 sync.py)
+# to regenerate this file.
+
+name: 'PR Check - C/C++: autoinstalling dependencies is skipped (macOS)'
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  GO111MODULE: auto
+  CODEQL_EXTRACTOR_JAVA_AGENT_DISABLE_KOTLIN: 'true'
+on:
+  push:
+    branches:
+    - main
+    - releases/v2
+  pull_request:
+    types:
+    - opened
+    - synchronize
+    - reopened
+    - ready_for_review
+  workflow_dispatch: {}
+jobs:
+  cpp-deptrace-enabled-on-macos:
+    strategy:
+      matrix:
+        include:
+        - os: macos-latest
+          version: nightly-latest
+    name: 'C/C++: autoinstalling dependencies is skipped (macOS)'
+    permissions:
+      contents: read
+      security-events: write
+    timeout-minutes: 45
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v4
+    - name: Prepare test
+      id: prepare-test
+      uses: ./.github/actions/prepare-test
+      with:
+        version: ${{ matrix.version }}
+        use-all-platform-bundle: 'false'
+    - name: Set environment variable for Swift enablement
+      if: >-
+        runner.os != 'Windows' && (
+            matrix.version == '20220908' ||
+            matrix.version == '20221211'
+        )
+      shell: bash
+      run: echo "CODEQL_ENABLE_EXPERIMENTAL_FEATURES_SWIFT=true" >> $GITHUB_ENV
+    - name: Test setup
+      shell: bash
+      run: |
+        cp -a ../action/tests/cpp-autobuild autobuild-dir
+    - uses: ./../action/init
+      with:
+        languages: cpp
+        tools: ${{ steps.prepare-test.outputs.tools-url }}
+    - uses: ./../action/autobuild
+      with:
+        working-directory: autobuild-dir
+      env:
+        CODEQL_EXTRACTOR_CPP_AUTOINSTALL_DEPENDENCIES: true
+    - shell: bash
+      run: |
+        if ! ls /usr/bin/errno; then
+          echo "As expected, CODEQL_EXTRACTOR_CPP_AUTOINSTALL_DEPENDENCIES is a no-op on macOS"
+        else
+          echo "CODEQL_EXTRACTOR_CPP_AUTOINSTALL_DEPENDENCIES should not have had any effect on macOS"
+          exit 1
+        fi
+    env:
+      DOTNET_GENERATE_ASPNET_CERTIFICATE: 'false'
+      CODEQL_ACTION_TEST_MODE: true
diff --git a/.github/workflows/__cpp-deptrace-enabled.yml b/.github/workflows/__cpp-deptrace-enabled.yml
new file mode 100644
index 0000000000..375d1b0bfb
--- /dev/null
+++ b/.github/workflows/__cpp-deptrace-enabled.yml
@@ -0,0 +1,78 @@
+# Warning: This file is generated automatically, and should not be modified.
+# Instead, please modify the template in the pr-checks directory and run:
+#     (cd pr-checks; pip install ruamel.yaml@0.17.31 && python3 sync.py)
+# to regenerate this file.
+
+name: 'PR Check - C/C++: autoinstalling dependencies (Linux)'
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  GO111MODULE: auto
+  CODEQL_EXTRACTOR_JAVA_AGENT_DISABLE_KOTLIN: 'true'
+on:
+  push:
+    branches:
+    - main
+    - releases/v2
+  pull_request:
+    types:
+    - opened
+    - synchronize
+    - reopened
+    - ready_for_review
+  workflow_dispatch: {}
+jobs:
+  cpp-deptrace-enabled:
+    strategy:
+      matrix:
+        include:
+        - os: ubuntu-latest
+          version: latest
+        - os: ubuntu-latest
+          version: default
+        - os: ubuntu-latest
+          version: nightly-latest
+    name: 'C/C++: autoinstalling dependencies (Linux)'
+    permissions:
+      contents: read
+      security-events: write
+    timeout-minutes: 45
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v4
+    - name: Prepare test
+      id: prepare-test
+      uses: ./.github/actions/prepare-test
+      with:
+        version: ${{ matrix.version }}
+        use-all-platform-bundle: 'false'
+    - name: Set environment variable for Swift enablement
+      if: >-
+        runner.os != 'Windows' && (
+            matrix.version == '20220908' ||
+            matrix.version == '20221211'
+        )
+      shell: bash
+      run: echo "CODEQL_ENABLE_EXPERIMENTAL_FEATURES_SWIFT=true" >> $GITHUB_ENV
+    - name: Test setup
+      shell: bash
+      run: |
+        cp -a ../action/tests/cpp-autobuild autobuild-dir
+    - uses: ./../action/init
+      with:
+        languages: cpp
+        tools: ${{ steps.prepare-test.outputs.tools-url }}
+    - uses: ./../action/autobuild
+      with:
+        working-directory: autobuild-dir
+      env:
+        CODEQL_EXTRACTOR_CPP_AUTOINSTALL_DEPENDENCIES: true
+    - shell: bash
+      run: |
+        if ! ls /usr/bin/errno; then
+          echo "Did not autoinstall errno"
+          exit 1
+        fi
+    env:
+      DOTNET_GENERATE_ASPNET_CERTIFICATE: 'false'
+      CODEQL_ACTION_TEST_MODE: true
diff --git a/pr-checks/checks/cpp-deptrace-disabled.yml b/pr-checks/checks/cpp-deptrace-disabled.yml
new file mode 100644
index 0000000000..118d01ae1c
--- /dev/null
+++ b/pr-checks/checks/cpp-deptrace-disabled.yml
@@ -0,0 +1,26 @@
+name: "C/C++: disabling autoinstalling dependencies (Linux)"
+description: "Checks that running C/C++ autobuild with autoinstalling dependencies explicitly disabled works"
+operatingSystems: ["ubuntu"]
+versions: ["latest", "default", "nightly-latest"] # This feature is not compatible with CLIs < 2.15.0
+env:
+  DOTNET_GENERATE_ASPNET_CERTIFICATE: "false"
+steps:
+  - name: Test setup
+    shell: bash
+    run: |
+      cp -a ../action/tests/cpp-autobuild autobuild-dir
+  - uses: ./../action/init
+    with:
+      languages: cpp
+      tools: ${{ steps.prepare-test.outputs.tools-url }}
+  - uses: ./../action/autobuild
+    with:
+      working-directory: autobuild-dir
+    env:
+      CODEQL_EXTRACTOR_CPP_AUTOINSTALL_DEPENDENCIES: false
+  - shell: bash
+    run: |
+      if ls /usr/bin/errno; then
+        echo "C/C++ autobuild installed errno, but it should not have since auto-install dependencies is disabled."
+        exit 1
+      fi
diff --git a/pr-checks/checks/cpp-deptrace-enabled-on-macos.yml b/pr-checks/checks/cpp-deptrace-enabled-on-macos.yml
new file mode 100644
index 0000000000..8a70f82fa5
--- /dev/null
+++ b/pr-checks/checks/cpp-deptrace-enabled-on-macos.yml
@@ -0,0 +1,28 @@
+name: "C/C++: autoinstalling dependencies is skipped (macOS)"
+description: "Checks that running C/C++ autobuild with autoinstalling dependencies explicitly enabled is a no-op on macOS"
+operatingSystems: ["macos"]
+versions: ["nightly-latest"]  # This is not released yet, will come with 2.15.2
+env:
+  DOTNET_GENERATE_ASPNET_CERTIFICATE: "false"
+steps:
+  - name: Test setup
+    shell: bash
+    run: |
+      cp -a ../action/tests/cpp-autobuild autobuild-dir
+  - uses: ./../action/init
+    with:
+      languages: cpp
+      tools: ${{ steps.prepare-test.outputs.tools-url }}
+  - uses: ./../action/autobuild
+    with:
+      working-directory: autobuild-dir
+    env:
+      CODEQL_EXTRACTOR_CPP_AUTOINSTALL_DEPENDENCIES: true
+  - shell: bash
+    run: |
+      if ! ls /usr/bin/errno; then
+        echo "As expected, CODEQL_EXTRACTOR_CPP_AUTOINSTALL_DEPENDENCIES is a no-op on macOS"
+      else
+        echo "CODEQL_EXTRACTOR_CPP_AUTOINSTALL_DEPENDENCIES should not have had any effect on macOS"
+        exit 1
+      fi
diff --git a/pr-checks/checks/cpp-deptrace-enabled.yml b/pr-checks/checks/cpp-deptrace-enabled.yml
new file mode 100644
index 0000000000..b3f7b1b733
--- /dev/null
+++ b/pr-checks/checks/cpp-deptrace-enabled.yml
@@ -0,0 +1,26 @@
+name: "C/C++: autoinstalling dependencies (Linux)"
+description: "Checks that running C/C++ autobuild with autoinstalling dependencies works"
+operatingSystems: ["ubuntu"]
+versions: ["latest", "default", "nightly-latest"] # This feature is not compatible with CLIs < 2.15.0
+env:
+  DOTNET_GENERATE_ASPNET_CERTIFICATE: "false"
+steps:
+  - name: Test setup
+    shell: bash
+    run: |
+      cp -a ../action/tests/cpp-autobuild autobuild-dir
+  - uses: ./../action/init
+    with:
+      languages: cpp
+      tools: ${{ steps.prepare-test.outputs.tools-url }}
+  - uses: ./../action/autobuild
+    with:
+      working-directory: autobuild-dir
+    env:
+      CODEQL_EXTRACTOR_CPP_AUTOINSTALL_DEPENDENCIES: true
+  - shell: bash
+    run: |
+      if ! ls /usr/bin/errno; then
+        echo "Did not autoinstall errno"
+        exit 1
+      fi
diff --git a/tests/cpp-autobuild/src/build.sh b/tests/cpp-autobuild/src/build.sh
new file mode 100755
index 0000000000..8a8ae2683c
--- /dev/null
+++ b/tests/cpp-autobuild/src/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+errno || true  # just a command to check its autoinstallation by deptrace
+
+gcc -o main main.c
diff --git a/tests/cpp-autobuild/src/main.c b/tests/cpp-autobuild/src/main.c
new file mode 100644
index 0000000000..846028e8f2
--- /dev/null
+++ b/tests/cpp-autobuild/src/main.c
@@ -0,0 +1,8 @@
+#include "stdio.h"
+
+int main(int argc, char **argv) {
+    if (1) {
+        printf("Hello, World!\n");
+    }
+}
+