diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a66624cc9b4db066aaff3c9a77849147458ba933..82f826e6ff37085fa48b687d41e41c011948e034 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,6 +1,6 @@
 variables:
   TESTV_DIR: "/usr/local/testv"
-
+  BUILD_OUTPUT: "build_output.txt"
 
 # prevent running two pipelines on pushes to merge request branches
 workflow:
@@ -37,19 +37,54 @@ stages:
   before_script:
     - if [ ! -d "$TESTV_DIR" ]; then mkdir -p $TESTV_DIR; fi
     - cp -r scripts/testv/* $TESTV_DIR/
-  
 
-# build all components of the project, i.e. codec itself, the unittests, the prerenderer and the standalone version of the TD object renderer
-build-all-linux-make:
+# template for build jobs to include the check for warnings
+.build-job-with-check-for-warnings:
   extends: .test-job-linux
+  stage: build
+  allow_failure:
+    exit_codes:
+      - 123
+
+
+build-codec-linux-make:
+  extends: .build-job-with-check-for-warnings
+  rules:
+    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
+  script:
+    - make -j 2>&1 | tee $BUILD_OUTPUT
+    # need to use the "|| exit $?" suffix to get the allowed_failure return code, otherwise the job fails with code 1...<
+    - ci/check_for_warnings.py $BUILD_OUTPUT || exit $?
+
+build-unittests-linux:
+  extends: .build-job-with-check-for-warnings
   rules:
     - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
-  stage: build
   script:
-    - bash ci/build_all_linux.sh
+    - make unittests -j 2>&1 | tee $BUILD_OUTPUT
+    # need to use the "|| exit $?" suffix to get the allowed_failure return code, otherwise the job fails with code 1...<
+    - ci/check_for_warnings.py $BUILD_OUTPUT || exit $?
+
+build-prerenderer-linux:
+  extends: .build-job-with-check-for-warnings
+  rules:
+    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
+  script:
+    - make -C scripts/prerenderer -j 2>&1 | tee $BUILD_OUTPUT
+    # need to use the "|| exit $?" suffix to get the allowed_failure return code, otherwise the job fails with code 1...<
+    - ci/check_for_warnings.py $BUILD_OUTPUT || exit $?
+
+build-td-object-renderer-standalone-linux:
+  extends: .build-job-with-check-for-warnings
+  rules:
+    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
+  script:
+    - make -C scripts/td_object_renderer/object_renderer_standalone -j 2>&1 | tee $BUILD_OUTPUT
+    # need to use the "|| exit $?" suffix to get the allowed_failure return code, otherwise the job fails with code 1...<
+    - ci/check_for_warnings.py $BUILD_OUTPUT || exit $?
 
 build-codec-linux-cmake:
-  extends: .test-job-linux
+  extends: .build-job-with-check-for-warnings
   rules:
     - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
   stage: build
@@ -57,7 +92,10 @@ build-codec-linux-cmake:
     - mkdir build
     - cd build
     - cmake ..
-    - make -j
+    - cd ..
+    - make -C build -j 2>&1 | tee $BUILD_OUTPUT
+    # need to use the "|| exit $?" suffix to get the allowed_failure return code, otherwise the job fails with code 1...<
+    - ci/check_for_warnings.py $BUILD_OUTPUT || exit $?
 
 build-codec-instrumented-linux:
   extends: .test-job-linux
diff --git a/ci/check_for_warnings.py b/ci/check_for_warnings.py
new file mode 100755
index 0000000000000000000000000000000000000000..c9240e040ab0edc402b554462fcf917ee2c12cf5
--- /dev/null
+++ b/ci/check_for_warnings.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+import argparse
+import sys
+
+
+SEARCH_FOR = "warning:"
+RETURN_FOUND = 123
+
+
+def main(log_file):
+    with open(log_file) as f:
+        lines_with_warnings = [l for l in f.readlines() if SEARCH_FOR in l]
+
+    n_warnings = len(lines_with_warnings)
+    if n_warnings > 0:
+        print(f"========== Found {n_warnings} warnings: =========")
+        for l in lines_with_warnings:
+            print(l)
+        return RETURN_FOUND
+    else:
+        return 0
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "compilation-output",
+        type=str,
+        help="text output of compilation process to analyze",
+    )
+    args = vars(parser.parse_args())
+    ret_code = main(args[ "compilation-output" ])
+    sys.exit(ret_code)