chore(examples): make build fail on any warning

Author: GuillaumeLagrange

.bazelrc

@@ -2,5 +2,10 @@ build --//core:codspeed_mode=instrumentation
 build --compilation_mode=dbg
 build --copt=-O2
 
+# Treat warnings as errors
+build --copt=-Wall
+build --copt=-Wextra
+build --copt=-Werror
+
 # Flip this early to avoid breaking compatibility once it becomes the default.
 build --incompatible_disallow_empty_glob

core/CMakeLists.txt

@@ -8,6 +8,13 @@ project(codspeed VERSION ${CODSPEED_VERSION} LANGUAGES CXX)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED True)
 
+# Treat warnings as errors
+if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
+    add_compile_options(-Wall -Wextra -Werror)
+elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
+    add_compile_options(/W4 /WX)
+endif()
+
 # Add the include directory
 include_directories(include)