build: simpify code coverage logic

.docker/build-linux.sh

@@ -123,20 +123,14 @@ cmake ../dwarfs/ $CMAKE_ARGS
 
 $BUILD_TOOL
 
-if [[ "-$BUILD_TYPE-" == *-coverage-* ]]; then
-  export LLVM_PROFILE_FILE="$PWD/profile/%32m.profraw"
-fi
-
 ctest --output-on-failure -j$(nproc)
 
 if [[ "-$BUILD_TYPE-" == *-coverage-* ]]; then
-  unset LLVM_PROFILE_FILE
-  rm -rf /tmp-runner/coverage
-  mkdir -p /tmp-runner/coverage
+  rm -f /tmp-runner/dwarfs-coverage.txt
   llvm-profdata-$CLANG_VERSION merge -sparse profile/* -o dwarfs.profdata
-  for binary in mkdwarfs dwarfs dwarfsck dwarfsextract *_test ricepp/ricepp_test; do
-    llvm-cov-$CLANG_VERSION show -instr-profile=dwarfs.profdata $binary >/tmp-runner/coverage/$(basename $binary).txt
-  done
+  llvm-cov-$CLANG_VERSION show -instr-profile=dwarfs.profdata \
+    $(for i in mkdwarfs dwarfs dwarfsck dwarfsextract *_test ricepp/ricepp_test; do echo $i; done | sed -e's/^/-object=/') \
+    >/tmp-runner/dwarfs-coverage.txt
 fi
 
 if [[ "-$BUILD_TYPE-" == *-static-* ]]; then

.github/workflows/build.yml

@@ -326,19 +326,12 @@ jobs:
             --env GITHUB_RUN_ATTEMPT \
             dwarfs-linux-build-${{ matrix.dist }}
 
-      - name: List Coverage Files
-        id: coverage-files
-        if: matrix.build_type == 'clang-coverage-ninja'
-        run: |
-          files=$(find ${{ runner.temp }}/coverage -type f | paste -d, -s)
-          echo "list=$files" >> "$GITHUB_OUTPUT"
-
       - name: Upload Coverage Data
         if: matrix.build_type == 'clang-coverage-ninja'
         uses: codecov/codecov-action@v4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-          files: ${{ steps.coverage-files.outputs.list }}
+          file: ${{ runner.temp }}/dwarfs-coverage.txt
           fail_ci_if_error: false
 
       - name: Prepare Artifact Upload

CMakeLists.txt

@@ -991,7 +991,10 @@ if(WITH_TESTS)
   endforeach()
 
   foreach(tgt ${TEST_TARGETS})
-    gtest_discover_tests(${tgt} DISCOVERY_TIMEOUT 120)
+    gtest_discover_tests(${tgt}
+      DISCOVERY_TIMEOUT 120
+      PROPERTIES ENVIRONMENT "LLVM_PROFILE_FILE=${CMAKE_BINARY_DIR}/profile/%32m.profraw"
+    )
   endforeach()
 endif()
 
@@ -1401,6 +1404,8 @@ add_custom_target(
         build.ninja .ninja_deps
         Makefile compile_commands.json
         artifacts.env
+        default.profraw
+        profile
   COMMAND
     ${CMAKE_COMMAND} -E rm -rf ${REALCLEAN_FILES}
 )

ricepp/CMakeLists.txt

@@ -192,6 +192,9 @@ if(WITH_TESTS)
   endif()
 
   if(NOT CMAKE_CROSSCOMPILING)
-    gtest_discover_tests(ricepp_test DISCOVERY_TIMEOUT 120)
+    gtest_discover_tests(ricepp_test
+      DISCOVERY_TIMEOUT 120
+      PROPERTIES ENVIRONMENT "LLVM_PROFILE_FILE=${CMAKE_BINARY_DIR}/profile/%32m.profraw"
+    )
   endif()
 endif()