fup only run once

Author: GuillaumeLagrange

google_benchmark/cmake/Codspeed.cmake

@@ -8,30 +8,18 @@ execute_process(
 target_compile_definitions(codspeed
                            INTERFACE -DCODSPEED_GIT_ROOT_DIR="${GIT_ROOT_DIR}")
 
-# Step 1: Check if CODSPEED_MODE is set via the command line
-
-# CMake cache kind of breaks this mechanism, keeping it for first time
-# defaulting
-if(NOT DEFINED CODSPEED_MODE)
-    # Step 2: Check the environment variable CODSPEED_MODE
-    if(DEFINED $ENV{CODSPEED_RUNNER_MODE})
-        set(CODSPEED_MODE $ENV{CODSPEED_RUNNER_MODE} FORCE)
-    else()
-        # Step 3: Default to "instrumentation" if no value is provided
-        set(CODSPEED_MODE "instrumentation")
-    endif()
-endif()
-
-# Define a preprocessor macro based on the build mode
-if(CODSPEED_MODE STREQUAL "instrumentation")
+if(DEFINED CODSPEED_MODE)
+  # Define a preprocessor macro based on the build mode
+  if(CODSPEED_MODE STREQUAL "instrumentation")
     target_compile_definitions(codspeed INTERFACE -DCODSPEED_INSTRUMENTATION)
-elseif(CODSPEED_MODE STREQUAL "walltime")
+  elseif(CODSPEED_MODE STREQUAL "walltime")
     target_compile_definitions(codspeed INTERFACE -DCODSPEED_WALLTIME)
-else()
+  else()
     message(
-        FATAL_ERROR
+      FATAL_ERROR
         "Invalid build mode: ${CODSPEED_MODE}. Use 'instrumentation' or 'walltime'."
     )
+  endif()
 endif()
 
 message(STATUS "Build mode set to: ${CODSPEED_MODE}")