diff --git a/.github/workflows/ci-baseline.yml b/.github/workflows/ci-baseline.yml
new file mode 100644
index 0000000..a374ae5
--- /dev/null
+++ b/.github/workflows/ci-baseline.yml
@@ -0,0 +1,105 @@
+name: github-Linux-baseline
+
+on:
+  pull_request:
+    types: [ opened, reopened, synchronize ]
+    paths-ignore:
+    - 'logos/**'
+    - 'helper_scripts/**'
+    - 'docker_scripts/**'
+    - 'docs/**'
+    - '**/*.md'
+  push: # for direct quick fixes
+    branches:
+      - 'main'
+      - 'develop'
+    paths-ignore:
+    - 'logos/**'
+    - 'helper_scripts/**'
+    - 'docker_scripts/**'
+    - 'docs/**'
+    - '**/*.md'
+
+concurrency:
+  group: ${{ github.event_name }}-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{github.event_name == 'pull_request'}}
+
+jobs:
+  CI:
+    name: baseline
+    continue-on-error: false
+    strategy:
+      fail-fast: false
+      matrix:
+        image:
+          - fedora-clang-17
+          - fedora-gnu-13
+          - ubuntu-clang-14
+          - ubuntu-gnu-11
+          #- intel-oneapi-latest
+        build_type:
+          - Release
+          - Debug
+        cmake_extra_args:
+          - ''
+        include:
+          - image: ubuntu-gnu-11
+            build_type: Release
+            cmake_extra_args: '-D CMAKE_CXX_STANDARD=20 -D PRESSIO_ENABLE_CXX20=ON'
+          - image: ubuntu-clang-14
+            build_type: Release
+            cmake_extra_args: '-D CMAKE_CXX_STANDARD=20 -D PRESSIO_ENABLE_CXX20=ON'
+          - image: fedora-gnu-13
+            build_type: Release
+            cmake_extra_args: '-D CMAKE_CXX_STANDARD=20 -D PRESSIO_ENABLE_CXX20=ON'
+          - image: fedora-clang-17
+            build_type: Release
+            cmake_extra_args: '-D CMAKE_CXX_STANDARD=20 -D PRESSIO_ENABLE_CXX20=ON'
+
+    runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/pressio/${{ matrix.image }}
+      credentials:
+        username: ${{ github.actor }}
+        password: ${{ secrets.github_token }}
+    env:
+      eigen_version: 3.4.0
+      num_cpus: 2 # $(cat /proc/cpuinfo | grep processor -c)
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Checkout pressio examples
+        uses: actions/checkout@v4
+        with:
+          repository: Pressio/pressio-templates-usage-as-library
+          path: examples
+
+      - name: Preparing environment
+        run: |
+          wget https://gitlab.com/libeigen/eigen/-/archive/${{ env.eigen_version }}/eigen-${{ env.eigen_version }}.tar.gz \
+          && mkdir -p /eigen \
+          && tar -xf eigen-${{ env.eigen_version }}.tar.gz -C /eigen
+
+      - name: Configure
+        run: |
+          cmake -B builddir \
+            -D CMAKE_BUILD_TYPE:STRING=${{ matrix.build_type }} \
+            -D CMAKE_C_COMPILER=$CC \
+            -D CMAKE_CXX_COMPILER=$CXX \
+            -D CMAKE_CXX_FLAGS='-Wall -Werror' \
+            -D CMAKE_INSTALL_PREFIX:PATH=../install \
+            -D CMAKE_VERBOSE_MAKEFILE:BOOL=ON \
+            ${{ matrix.cmake_extra_args }} \
+            -D PRESSIO_OPS_ENABLE_TESTS:BOOL=ON \
+            -D PRESSIO_ENABLE_TPL_EIGEN:BOOL=ON \
+            -D EIGEN_INCLUDE_DIR=/eigen/eigen-${{ env.eigen_version }}
+
+      - name: Build
+        run: |
+          cmake --build builddir --target install
+
+      - name: Run tests
+        working-directory: builddir/tests
+        run: |
+          ctest -j $num_cpus --output-on-failure
diff --git a/tests/cmake/.macrosForCreatingTests.cmake.~undo-tree~ b/tests/cmake/.macrosForCreatingTests.cmake.~undo-tree~
deleted file mode 100644
index 7ba3a6c..0000000
--- a/tests/cmake/.macrosForCreatingTests.cmake.~undo-tree~
+++ /dev/null
@@ -1,4 +0,0 @@
-(undo-tree-save-format-version . 1)
-"ae2e908d02bf3174038cf0fba1247658fb1ad659"
-[nil current nil nil (26325 30169 659695 0) 0 nil]
-nil
diff --git a/tests/cmake/.macrosForCreatingUnitTests.cmake.~undo-tree~ b/tests/cmake/.macrosForCreatingUnitTests.cmake.~undo-tree~
index fe22e5e..90676df 100644
--- a/tests/cmake/.macrosForCreatingUnitTests.cmake.~undo-tree~
+++ b/tests/cmake/.macrosForCreatingUnitTests.cmake.~undo-tree~
@@ -1,4 +1,4 @@
 (undo-tree-save-format-version . 1)
-"d9f0f22f534574c2209c1758f13b89645d3321b2"
-[nil current nil nil (26325 30216 49299 0) 0 nil]
+"2b4f63d4ddc8744f7c3b6914c8bc4706cd7762dc"
+[nil current nil nil (26376 53248 93049 0) 0 nil]
 nil
diff --git a/tests/cmake/.options.cmake.~undo-tree~ b/tests/cmake/.options.cmake.~undo-tree~
deleted file mode 100644
index 7b24c31..0000000
--- a/tests/cmake/.options.cmake.~undo-tree~
+++ /dev/null
@@ -1,4 +0,0 @@
-(undo-tree-save-format-version . 1)
-"ef07ac22caea49a9cbd96d4654e5db6fc67f9b35"
-[nil current nil nil (26325 30209 457076 0) 0 nil]
-nil
diff --git a/tests/expressions/CMakeLists.txt b/tests/expressions/CMakeLists.txt
index 6ec750e..528ef97 100644
--- a/tests/expressions/CMakeLists.txt
+++ b/tests/expressions/CMakeLists.txt
@@ -1,7 +1,7 @@
 # to include google test fixtures
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/fixtures)
 
-if(PRESSIO_OPS_ENABLE_TPL_EIGEN)
+if(PRESSIO_ENABLE_TPL_EIGEN)
   add_serial_utest(
     expressions_eigen
     eigen_span.cc
@@ -11,7 +11,7 @@ if(PRESSIO_OPS_ENABLE_TPL_EIGEN)
     )
 endif()
 
-if(PRESSIO_OPS_ENABLE_TPL_KOKKOS)
+if(PRESSIO_ENABLE_TPL_KOKKOS)
   add_serial_utest_kokkos(
     expressions_kokkos
     kokkos_span.cc
@@ -21,7 +21,7 @@ if(PRESSIO_OPS_ENABLE_TPL_KOKKOS)
   )
 endif()
 
-if(PRESSIO_OPS_ENABLE_TPL_TRILINOS)
+if(PRESSIO_ENABLE_TPL_TRILINOS)
   set(SRC ${CMAKE_CURRENT_SOURCE_DIR}/tpetra_column.cc)
   add_utest_mpi(expressions_tpetra_column gTestMain_tpetra 3 "${SRC}")
 
diff --git a/tests/ops/CMakeLists.txt b/tests/ops/CMakeLists.txt
index a89e11d..fe0ca26 100644
--- a/tests/ops/CMakeLists.txt
+++ b/tests/ops/CMakeLists.txt
@@ -2,7 +2,7 @@
 # to include google test fixtures
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/fixtures)
 
-if(PRESSIO_OPS_ENABLE_TPL_EIGEN)
+if(PRESSIO_ENABLE_TPL_EIGEN)
   add_serial_utest(
     ops_eigen
     ops_eigen_vector.cc
@@ -16,7 +16,7 @@ if(PRESSIO_OPS_ENABLE_TPL_EIGEN)
   )
 endif()
 
-if(PRESSIO_OPS_ENABLE_TPL_KOKKOS)
+if(PRESSIO_ENABLE_TPL_KOKKOS)
   add_serial_utest_kokkos(ops_vector_kokkos
     ops_kokkos_vector.cc
     ops_kokkos_matrix.cc
@@ -28,7 +28,7 @@ if(PRESSIO_OPS_ENABLE_TPL_KOKKOS)
   )
 endif()
 
-if(PRESSIO_OPS_ENABLE_TPL_TRILINOS)
+if(PRESSIO_ENABLE_TPL_TRILINOS)
  # TPETRA
  set(SRC1 ${CMAKE_CURRENT_SOURCE_DIR}/ops_tpetra_vector.cc)
  add_utest_mpi(ops_vector_tpetra gTestMain_tpetra 3 "${SRC1}")
diff --git a/tests/type_traits/CMakeLists.txt b/tests/type_traits/CMakeLists.txt
index 65e3795..bf6e478 100644
--- a/tests/type_traits/CMakeLists.txt
+++ b/tests/type_traits/CMakeLists.txt
@@ -2,7 +2,7 @@
 set(SRC1 ${CMAKE_CURRENT_SOURCE_DIR}/detect_typedefs.cc)
 add_serial_utest(type_traits_nested_typedefs ${SRC1})
 
-if(PRESSIO_OPS_ENABLE_TPL_EIGEN)
+if(PRESSIO_ENABLE_TPL_EIGEN)
   set(SRC1 ${CMAKE_CURRENT_SOURCE_DIR}/all_have_traits.cc)
   set(EXE type_traits_all_have_traits_eigen)
   add_serial_utest(${EXE} ${SRC1})
@@ -17,7 +17,7 @@ if(PRESSIO_OPS_ENABLE_TPL_EIGEN)
   add_serial_utest(type_traits_eigen ${SRC1})
 endif()
 
-if(PRESSIO_OPS_ENABLE_TPL_KOKKOS)
+if(PRESSIO_ENABLE_TPL_KOKKOS)
   set(SRC1 ${CMAKE_CURRENT_SOURCE_DIR}/all_have_traits.cc)
   set(EXE type_traits_all_have_traits_kokkos)
   add_serial_utest(${EXE} ${SRC1})
@@ -32,7 +32,7 @@ if(PRESSIO_OPS_ENABLE_TPL_KOKKOS)
   add_serial_utest_kokkos(type_traits_kokkos ${SRC1})
 endif()
 
-if(PRESSIO_OPS_ENABLE_TPL_TRILINOS)
+if(PRESSIO_ENABLE_TPL_TRILINOS)
   set(SRC ${CMAKE_CURRENT_SOURCE_DIR}/traits_teuchos.cc)
   add_serial_utest(type_traits_teuchos ${SRC})