Problem: unused variable warnings for values only used in asserts

Solution: use a Debug build for analysis

builds/cmake/ci_build.sh

@@ -51,6 +51,7 @@ CMAKE_PREFIXES=()
 MAKE_PREFIXES=()
 PARALLEL_MAKE_OPT="-j5"
 if [ -n "$CLANG_TIDY" ] ; then
+    CMAKE_OPTS+=("-DCMAKE_BUILD_TYPE=Debug") # do a debug build to avoid unused variable warnings with assertions, and to speed up build
     CMAKE_OPTS+=("-DCMAKE_CXX_CLANG_TIDY:STRING=${CLANG_TIDY}")
     if [ -n ${SONARCLOUD_BUILD_WRAPPER_PATH} ] ; then
         MAKE_PREFIXES+=("${SONARCLOUD_BUILD_WRAPPER_PATH}build-wrapper-linux-x86-64")