ci: test for reproducible build

.github/workflows/ci.yml

@@ -126,7 +126,7 @@ jobs:
       - name: build ROOT
         if: ${{ steps.cache.outputs.cache-hit != 'true' }}
         run: |
-          cmake -S root_src -B build -G Ninja --install-prefix $(pwd)/root -DCMAKE_CXX_STANDARD=17
+          cmake -S root_src -B build -G Ninja --install-prefix $GITHUB_WORKSPACE/root -DCMAKE_CXX_STANDARD=17
           cmake --build build
           cmake --install build
           tar caf root{.tar.zst,}
@@ -193,7 +193,7 @@ jobs:
         run: |
           iguana_src/.github/install-dependency-packages.sh ${{ inputs.runner }} ${{ inputs.verset }}
           [ "${{ matrix.root_dep }}" = "withROOT" ] && source root/bin/thisroot.sh
-          meson setup build hipo_src --prefix=$(pwd)/hipo -Dbuildtype=debug -Db_pie=true # using PIE build, for sanitizer readibility
+          meson setup build hipo_src --prefix=$GITHUB_WORKSPACE/hipo -Dbuildtype=debug -Db_pie=true # using PIE build, for sanitizer readibility
           meson install -C build
           tar cavf hipo{.tar.zst,}
       ### cache save
@@ -235,7 +235,7 @@ jobs:
         if: ${{ steps.cache.outputs.cache-hit != 'true' && inputs.verset == 'minver' }}
         run: |
           iguana_src/.github/install-dependency-packages.sh ${{ inputs.runner }} ${{ inputs.verset }}
-          export RBENV_ROOT=$(pwd)/.rbenv
+          export RBENV_ROOT=$GITHUB_WORKSPACE/.rbenv
           git clone https://github.com/rbenv/rbenv.git $RBENV_ROOT
           eval "$($RBENV_ROOT/bin/rbenv init - bash)"
           git clone https://github.com/rbenv/ruby-build.git $(rbenv root)/plugins/ruby-build
@@ -300,7 +300,7 @@ jobs:
         if: ${{ inputs.id != 'macOS' && inputs.verset == 'minver' }}
         run: |
           tar xf ruby.tar.zst
-          export RBENV_ROOT=$(pwd)/.rbenv
+          export RBENV_ROOT=$GITHUB_WORKSPACE/.rbenv
           echo RBENV_ROOT=$RBENV_ROOT >> $GITHUB_ENV
           eval "$($RBENV_ROOT/bin/rbenv init - bash)"
           echo "ruby --version:"
@@ -379,17 +379,17 @@ jobs:
       ### build
       - name: meson setup
         run: |
-          meson setup iguana_build iguana_src            \
-            --prefix=$(pwd)/iguana                       \
-            --pkg-config-path=$(pwd)/hipo/lib/pkgconfig  \
-            -Drcdb:home=${{ steps.rcdb.outputs.prefix }} \
-            -Dz_require_rcdb=true                        \
-            -Dwerror=true                                \
-            -Dinstall_examples=true                      \
-            -Dtest_data_file=$(pwd)/test_data.hipo       \
-            -Dtest_num_events=${{ env.num_events }}      \
-            -Dtest_output_dir=$(pwd)/validation_results  \
-            -Dtest_num_threads=${{ env.num_threads }}    \
+          meson setup iguana_build iguana_src                      \
+            --prefix=$GITHUB_WORKSPACE/iguana                      \
+            --pkg-config-path=$GITHUB_WORKSPACE/hipo/lib/pkgconfig \
+            -Drcdb:home=${{ steps.rcdb.outputs.prefix }}           \
+            -Dz_require_rcdb=true                                  \
+            -Dwerror=true                                          \
+            -Dinstall_examples=true                                \
+            -Dtest_data_file=$GITHUB_WORKSPACE/test_data.hipo      \
+            -Dtest_num_events=${{ env.num_events }}                \
+            -Dtest_output_dir=$GITHUB_WORKSPACE/validation_results \
+            -Dtest_num_threads=${{ env.num_threads }}              \
             ${{ matrix.opts }}
       - name: dump all build options
         run: meson configure iguana_build --no-pager
@@ -430,6 +430,14 @@ jobs:
             meson test --benchmark --suite $suite -C iguana_build | tee benchmark_$suite.txt
           done
           iguana_src/.github/make-benchmark-table.rb benchmark_{single_threaded,memoize}.txt | xargs -0 -I{} echo {} >> $GITHUB_STEP_SUMMARY
+      ### reproducible build test
+      - name: reproducible build test
+        if: ${{ matrix.id == 'cpp' }}
+        working-directory: iguana_src
+        run: |
+          meson reprotest -- \
+            --pkg-config-path=$GITHUB_WORKSPACE/hipo/lib/pkgconfig \
+            -Drcdb:home=${{ steps.rcdb.outputs.prefix }}
       ### coverage
       - name: coverage
         if: ${{ matrix.id == 'coverage' }}
@@ -492,14 +500,14 @@ jobs:
       - name: consumer test meson
         if: ${{ matrix.id == 'cpp' }}
         run: |
-          meson setup build_consumer_meson iguana_src/examples/build_with_meson --prefix=$(pwd)/install_consumer_meson
+          meson setup build_consumer_meson iguana_src/examples/build_with_meson --prefix=$GITHUB_WORKSPACE/install_consumer_meson
           meson install -C build_consumer_meson
           echo "========================================= TEST RUN ========================================="
           install_consumer_meson/bin/iguana_ex_cpp_00_run_functions test_data.hipo 10
       - name: consumer test cmake
         if: ${{ matrix.id == 'cpp' }}
         run: |
-          cmake -B build_consumer_cmake -S iguana_src/examples/build_with_cmake -DCMAKE_PREFIX_PATH=$(pwd)/hipo -G Ninja --install-prefix=$(pwd)/install_consumer_cmake
+          cmake -B build_consumer_cmake -S iguana_src/examples/build_with_cmake -DCMAKE_PREFIX_PATH=$GITHUB_WORKSPACE/hipo -G Ninja --install-prefix=$GITHUB_WORKSPACE/install_consumer_cmake
           cmake --build build_consumer_cmake
           cmake --install build_consumer_cmake
           echo "========================================= TEST RUN ========================================="