From 818052344265e2c4e70f1b0e746bb855bb234c07 Mon Sep 17 00:00:00 2001
From: Marcus Holland-Moritz <github@mhxnet.de>
Date: Sun, 17 Aug 2025 12:34:05 +0200
Subject: [PATCH] chore: configure coveralls as code coverage backup

---
 .docker/build-linux.sh                 |  7 ++++---
 .github/workflows/docker-run-build.yml | 25 +++++++++++++++++++++++--
 CMakeLists.txt                         |  6 ++++++
 3 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/.docker/build-linux.sh b/.docker/build-linux.sh
index 09cceb43..5c4e4c40 100755
--- a/.docker/build-linux.sh
+++ b/.docker/build-linux.sh
@@ -422,10 +422,11 @@ esac
 
 if [[ "-$BUILD_TYPE-" == *-coverage-* ]]; then
   rm -f /tmp-runner/dwarfs-coverage.txt
+  rm -f /tmp-runner/dwarfs-coverage.info
+  _objects="$(for i in mkdwarfs dwarfs dwarfsck dwarfsextract *_test *_tests ricepp/ricepp_test; do echo $i; done | sed -e's/^/-object=/')"
   llvm-profdata$CLANG_VERSION merge -sparse profile/* -o dwarfs.profdata
-  llvm-cov$CLANG_VERSION show -instr-profile=dwarfs.profdata \
-    $(for i in mkdwarfs dwarfs dwarfsck dwarfsextract *_test *_tests ricepp/ricepp_test; do echo $i; done | sed -e's/^/-object=/') \
-    >/tmp-runner/dwarfs-coverage.txt
+  llvm-cov$CLANG_VERSION export -format=lcov -compilation-dir="${GITHUB_WORKSPACE}" -instr-profile=dwarfs.profdata \
+      -ignore-filename-regex='(^|/)(fsst|folly|fbthrift)/' $_objects >/tmp-runner/dwarfs-coverage.lcov
 fi
 
 if [[ "-$BUILD_TYPE-" == *-static-* ]]; then
diff --git a/.github/workflows/docker-run-build.yml b/.github/workflows/docker-run-build.yml
index dccc935c..43d55400 100644
--- a/.github/workflows/docker-run-build.yml
+++ b/.github/workflows/docker-run-build.yml
@@ -81,6 +81,7 @@ jobs:
             --env BUILD_ARCH=${{ inputs.build_arch }} \
             --env CROSS_ARCH=${{ inputs.cross_arch }} \
             --env BUILD_DIST=${{ inputs.build_dist }} \
+            --env GITHUB_WORKSPACE \
             --env GITHUB_REF_NAME \
             --env GITHUB_REF_TYPE \
             --env GITHUB_RUN_ID \
@@ -88,14 +89,24 @@ jobs:
             --env GITHUB_RUN_ATTEMPT \
             dwarfs-linux-build-${{ inputs.build_dist }}
 
-      - name: Upload Coverage Data
+      - name: Upload Coverage Data (Codecov)
         uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-          files: ${{ runner.temp }}/dwarfs-coverage.txt
+          files: ${{ runner.temp }}/dwarfs-coverage.lcov
           fail_ci_if_error: false
         if: ${{ inputs.upload_coverage }}
 
+      - name: Upload Coverage Data (Coveralls)
+        uses: coverallsapp/github-action@v2
+        with:
+          file: ${{ runner.temp }}/dwarfs-coverage.lcov
+          format: 'lcov'
+          fail-on-error: false
+        env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
+        if: ${{ inputs.upload_coverage }}
+
       - name: Prepare Artifact Upload
         run: cat ${{ runner.temp }}/artifacts.env >> $GITHUB_ENV
         if: ${{ inputs.upload_artifacts }}
@@ -132,3 +143,13 @@ jobs:
         env:
           ACTIONS_ARTIFACT_UPLOAD_CONCURRENCY: 5
         if: ${{ inputs.upload_artifacts }}
+
+      - name: Upload Coverage Data Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: dwarfs-coverage
+          path: ${{ runner.temp }}/dwarfs-coverage.*
+          if-no-files-found: error
+        env:
+          ACTIONS_ARTIFACT_UPLOAD_CONCURRENCY: 5
+        if: ${{ inputs.upload_coverage }}
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 23c55335..b53e661a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -834,6 +834,12 @@ foreach(tgt ${LIBDWARFS_TARGETS} ${LIBDWARFS_OBJECT_TARGETS} dwarfs_test_helpers
                        -fno-omit-frame-pointer)
       target_link_options(${tgt} PRIVATE -fprofile-instr-generate
                           -fcoverage-mapping)
+      if(DEFINED ENV{GITHUB_WORKSPACE})
+        target_compile_options(${tgt} PRIVATE -fcoverage-prefix-map=${CMAKE_SOURCE_DIR}=$ENV{GITHUB_WORKSPACE}
+                                              -ffile-compilation-dir=$ENV{GITHUB_WORKSPACE})
+        target_link_options(${tgt} PRIVATE -fcoverage-prefix-map=${CMAKE_SOURCE_DIR}=$ENV{GITHUB_WORKSPACE}
+                                           -ffile-compilation-dir=$ENV{GITHUB_WORKSPACE})
+      endif()
     endif()
     target_compile_definitions(${tgt} PRIVATE DWARFS_COVERAGE_ENABLED=1)
   endif()