diff --git a/.github/workflows/build-check-sdk.yaml b/.github/workflows/build-check-sdk.yaml
new file mode 100644
index 0000000..aed27d4
--- /dev/null
+++ b/.github/workflows/build-check-sdk.yaml
@@ -0,0 +1,14 @@
+name: "Build check gemstone in SDK"
+run-name: SDK build check to ${{ inputs.deploy_target }} by @${{ github.actor }}
+on: [push, pull_request]
+env:
+  SDK: 0.1.0-alma-9.3
+jobs:
+  build-check-sdk:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Setup SDK
+      run: docker pull servostar/gemstone:sdk-"$SDK" && docker build --tag gemstone:devkit-"$SDK" .
+    - name: Compile
+      run: docker run gemstone:devkit-"$SDK" make check
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4a4a211..31b5c87 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -102,3 +102,28 @@ target_compile_options(debug PUBLIC ${FLAGS} -g)
 
 # add src directory as include path
 target_include_directories(debug PUBLIC src)
+
+# ------------------------------------------------ #
+#  Target Code Check                               #
+# ------------------------------------------------ #
+
+# Same as debug but will fail on warnings
+# use as check
+
+add_executable(check
+        ${SOURCE_FILES}
+        ${LEX_GENERATED_SOURCE_FILE}
+        ${YACC_GENERATED_SOURCE_FILE})
+
+set_target_properties(check
+        PROPERTIES
+        OUTPUT_NAME "gsc"
+        RUNTIME_OUTPUT_DIRECTORY "bin/check")
+
+# compiler flags targeting a GCC debug environment
+# extra -Werror flag to treat warnings as error to make github action fail on warning
+target_compile_options(check PUBLIC ${FLAGS} -g -Werror)
+
+# add src directory as include path
+target_include_directories(check PUBLIC src)
+
diff --git a/src/lex/lexer.l b/src/lex/lexer.l
index a17888b..c17fce5 100644
--- a/src/lex/lexer.l
+++ b/src/lex/lexer.l
@@ -6,6 +6,11 @@
     int yylex();
 %}
 
+/* disable the following functions */
+/* to avoid failing code check */
+%option nounput
+%option noinput
+
 %%
 .;
-%%
\ No newline at end of file
+%%