Enable -Werror in developer build

Author: staniewzki

cmake/helpers.cmake

@@ -245,7 +245,8 @@ function(add_umf_target_compile_options name)
         endif()
         if(UMF_DEVELOPER_MODE)
             target_compile_options(${name} PRIVATE -fno-omit-frame-pointer
-                                                   -fstack-protector-strong)
+                                                   -fstack-protector-strong
+                                                   -Werror)
         endif()
         if(UMF_USE_COVERAGE)
             if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")

test/CMakeLists.txt

@@ -71,8 +71,11 @@ function(build_umf_test)
         # tests retrieve arguments using 'GetParam()', which applies a 'const'
         # qualifier often discarded in the test scenarios.
         target_compile_options(${TEST_TARGET_NAME} PRIVATE -Wno-cast-qual)
-    endif()
 
+        if(UMF_DEVELOPER_MODE)
+            target_compile_options(${TEST_TARGET_NAME} PRIVATE -Werror)
+        endif()
+    endif()
     target_link_directories(${TEST_TARGET_NAME} PRIVATE ${LIB_DIRS})
 
     target_include_directories(