fix: Convert CMake booleans to C integers for file/console logging flags

[hmmorales]

fix: Convert CMake booleans to C integers for file/console logging flags

🐛 Problem

Commit b7e5e8b0 ("Allow build.sh to disable logging. #796") added #if ADUC_ENABLE_FILE_LOG preprocessor guards in src/logging/zlog/src/init.c, but src/CMakeLists.txt passes the raw CMake boolean:

add_definitions (-DADUC_ENABLE_FILE_LOG=${ADUC_ENABLE_FILE_LOG})  # produces -DADUC_ENABLE_FILE_LOG=ON

In C, #if ON evaluates the undefined identifier ON as 0, silently disabling all file logging at compile time.

Customer impact: No ADU agent log files were created on the vnext\delta branch. Only sw-update.log (written by the swupdate handler's shell script, independent of zlog) was visible.

Note: The customer's du-diagnostics-config.json logPath setting was not a factor — it controls where the diagnostics workflow reads/collects logs, not where the agent writes them (controlled by compile-time ADUC_LOG_FOLDER, default /var/log/adu).

---

✅ Fix

Changed file: src/CMakeLists.txt

Convert CMake booleans (ON/OFF) to C integers (1/0):

# Before (broken):
add_definitions (-DADUC_ENABLE_FILE_LOG=${ADUC_ENABLE_FILE_LOG})

# After (fixed):
if (ADUC_ENABLE_FILE_LOG)
    add_definitions (-DADUC_ENABLE_FILE_LOG=1)
else ()
    add_definitions (-DADUC_ENABLE_FILE_LOG=0)
endif ()

Same pattern applied to ADUC_ENABLE_CONSOLE_LOG.

---

📋 Customer follow-up

After rebuilding with this fix, log files will be written to /var/log/adu/. The customer should update their du-diagnostics-config.json logPath to /var/log/adu/ to match, or rebuild with -DADUC_LOG_FOLDER="/adu/logs" to match their existing config.

[Nox-MSFT]

Thanks for the fix @hmmorales