[eclipse-iceoryx#264] Add LLVM version check to coverage script

internal/scripts/generate-cov-report.sh

@@ -50,20 +50,39 @@ generate_profile() {
 merge_report() {
  dependency_check llvm-profdata
 
- mkdir -p ./${COVERAGE_DIR}/
- local FILES=$(find . -name "*profraw")
- llvm-profdata merge -sparse $FILES -o ./${COVERAGE_DIR}/json5format.profdata
+ if [[ ! -f "./${COVERAGE_DIR}/json5format.profdata" ]]; then
+ # get LLVM versions of llvm-profdata and rustc
+ LLVM_PROFDATA_VERSION_OUTPUT=$( llvm-profdata merge --version )
+ LLVM_VERSION=$(echo "$LLVM_PROFDATA_VERSION_OUTPUT" | grep -oP 'LLVM version \K[0-9]+')
+
+ RUSTC_VERSION_OUTPUT=$( rustc --version --verbose )
+ RUSTC_LLVM_VERSION=$(echo "$RUSTC_VERSION_OUTPUT" | grep -oP 'LLVM version: \K[0-9]+')
+
+ # check LLVM versions for compatibility
+ if [[ "$LLVM_VERSION" -ne "$RUSTC_LLVM_VERSION" ]]; then
+ echo -e "llvm-profdata LLVM version: $LLVM_VERSION"
+ echo -e "rustc LLVM version: $RUSTC_LLVM_VERSION"
+ echo -e "${COLOR_RED}error: LLVM major versions do not match${COLOR_OFF}"
+ exit 1
+ fi
+
+ # create report
+ mkdir -p ./${COVERAGE_DIR}/
+ local FILES=$(find . -name "*profraw")
+ llvm-profdata merge --sparse $FILES -o ./${COVERAGE_DIR}/json5format.profdata
+ fi
 }
 
 generate() {
  cleanup
  generate_profile
- merge_report
 }
 
 show_overview() {
  dependency_check llvm-cov
 
+ merge_report
+
  local FILES=$(find ./target/debug/deps/ -type f -executable)
  CMD="llvm-cov report --use-color --ignore-filename-regex='/.cargo/registry' --instr-profile=./${COVERAGE_DIR}/json5format.profdata"
 
@@ -79,6 +98,8 @@ show_report() {
  dependency_check llvm-cov
  dependency_check rustfilt
 
+ merge_report
+
  local FILES=$(find ./target/debug/deps/ -type f -executable)
  CMD="llvm-cov report --use-color --ignore-filename-regex='/.cargo/registry' --instr-profile=./${COVERAGE_DIR}/json5format.profdata"