Correctly find LAPACK and link against it

.github/workflows/builds.yaml

@@ -15,23 +15,36 @@ jobs:
         include:
           - compiler: gcc/13
             tag: gcc-13
+            dir: gcc/13.3.0
           - compiler: gcc/14
             tag: gcc-14
+            dir: gcc/14.2.0
           - compiler: clang/17
             tag: clang-17
+            dir: clang/17.0.6
           - compiler: clang/18
             tag: clang-18
+            dir: clang/18.1.8
           - compiler: clang/19
             tag: clang-19
+            dir: clang/19.1.5
           - compiler: intel/oneapi
             tag: intel-oneapi
+            dir: intel/2025.0.0
     steps:
       - uses: actions/checkout@v6
       - name: build
         shell: bash
         run: |
           module load python3/3.12.3 opensn/${{ matrix.compiler }}
-          mkdir build && cd build && cmake -DOPENSN_WITH_PYTHON_MODULE=ON .. && make -j && cd ..
+          mkdir build
+          cd build
+          cmake \
+            -DBLAS_LIBRARIES="/opt/local/opensn/${{ matrix.dir }}/dependencies/lib/libf2cblas.a" \
+            -DLAPACK_LIBRARIES="/opt/local/opensn/${{ matrix.dir }}/dependencies/lib/libf2cblas.a" \
+            -DOPENSN_WITH_PYTHON_MODULE=ON \
+            ..
+          make -j
       - name: test
         shell: bash
         run: |
@@ -70,15 +83,25 @@ jobs:
         include:
           - compiler: gcc/14
             tag: gcc-14
+            dir: gcc/14.2.0
           - compiler: clang/19
             tag: clang-19
+            dir: clang/19.1.5
     steps:
       - uses: actions/checkout@v6
       - name: build
         shell: bash
         run: |
           module load python3/3.12.3 opensn/${{ matrix.compiler }}
-          mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=Native -DOPENSN_WITH_PYTHON_MODULE=ON .. && make -j && cd ..
+          mkdir build
+          cd build
+          cmake \
+            -DBLAS_LIBRARIES="/opt/local/opensn/${{ matrix.dir }}/dependencies/lib/libf2cblas.a" \
+            -DLAPACK_LIBRARIES="/opt/local/opensn/${{ matrix.dir }}/dependencies/lib/libf2cblas.a" \
+            -DCMAKE_BUILD_TYPE=Native \
+            -DOPENSN_WITH_PYTHON_MODULE=ON \
+            ..
+          make -j
       - name: test
         shell: bash
         run: |
@@ -104,15 +127,26 @@ jobs:
         include:
           - compiler: gcc/14
             tag: gcc-14
+            dir: gcc/14.2.0
           - compiler: clang/19
             tag: clang-19
+            dir: clang/19.1.5
     steps:
       - uses: actions/checkout@v6
       - name: build
         shell: bash
         run: |
           module load cuda/13.0 python3/3.12.3 opensn/${{ matrix.compiler }}
-          mkdir build && cd build && cmake -DOPENSN_WITH_CUDA=ON -DCMAKE_CUDA_ARCHITECTURES=89 -DOPENSN_WITH_PYTHON_MODULE=ON .. && make -j && cd ..
+          mkdir build
+          cd build
+          cmake \
+            -DBLAS_LIBRARIES="/opt/local/opensn/${{ matrix.dir }}/dependencies/lib/libf2cblas.a" \
+            -DLAPACK_LIBRARIES="/opt/local/opensn/${{ matrix.dir }}/dependencies/lib/libf2cblas.a" \
+            -DOPENSN_WITH_CUDA=ON \
+            -DCMAKE_CUDA_ARCHITECTURES=89 \
+            -DOPENSN_WITH_PYTHON_MODULE=ON \
+            ..
+          make -j
       - name: test
         shell: bash
         run: |
@@ -137,7 +171,11 @@ jobs:
         shell: bash
         run: |
           module load python3/3.12.3 opensn/clang/17
-          cmake -DOPENSN_WITH_PYTHON_MODULE=ON --preset clang+debug+sanitizer
+          cmake \
+            -DBLAS_LIBRARIES="/opt/local/opensn/clang/17.0.6/dependencies/lib/libf2cblas.a" \
+            -DLAPACK_LIBRARIES="/opt/local/opensn/clang/17.0.6/dependencies/lib/libf2cblas.a" \
+            -DOPENSN_WITH_PYTHON_MODULE=ON \
+            --preset clang+debug+sanitizer
           cmake --build --preset clang+debug+sanitizer -j64
       - name: test
         shell: bash

.github/workflows/coverage.yaml

@@ -14,7 +14,13 @@ jobs:
         shell: bash
         run: |
           module load cuda/13.0 python3/3.12.3 opensn/gcc/14
-          cmake -DOPENSN_WITH_PYTHON_MODULE=ON -DOPENSN_WITH_CUDA=ON -DCMAKE_CUDA_ARCHITECTURES=89 --preset coverage
+          cmake \
+            -DBLAS_LIBRARIES="/opt/local/opensn/gcc/14.2.0/dependencies/lib/libf2cblas.a" \
+            -DLAPACK_LIBRARIES="/opt/local/opensn/gcc/14.2.0/dependencies/lib/libf2cblas.a" \
+            -DOPENSN_WITH_PYTHON_MODULE=ON \
+            -DOPENSN_WITH_CUDA=ON \
+            -DCMAKE_CUDA_ARCHITECTURES=89 \
+            --preset coverage
           cmake --build --preset coverage -j64
       - name: test
         shell: bash

.github/workflows/regression.yaml

@@ -20,7 +20,13 @@ jobs:
         shell: bash
         run: |
           module load python3/3.12.3 opensn/gcc/14
-          mkdir build && cd build && cmake -DOPENSN_WITH_PYTHON_MODULE=ON .. && make -j && cd ..
+          mkdir build
+          cd build
+          cmake \
+            -DBLAS_LIBRARIES="/opt/local/opensn/gcc/14.2.0/dependencies/lib/libf2cblas.a" \
+            -DLAPACK_LIBRARIES="/opt/local/opensn/gcc/14.2.0/dependencies/lib/libf2cblas.a" \
+            -DOPENSN_WITH_PYTHON_MODULE=ON ..
+          make -j
       - name: test
         shell: bash
         run: |
@@ -68,7 +74,16 @@ jobs:
         shell: bash
         run: |
           module load cuda/12.9 python3/3.12.3 opensn/gcc/14
-          mkdir build && cd build && cmake -DOPENSN_WITH_CUDA=ON -DCMAKE_CUDA_ARCHITECTURES=89 -DOPENSN_WITH_PYTHON_MODULE=ON .. && make -j && cd ..
+          mkdir build
+          cd build
+          cmake \
+            -DBLAS_LIBRARIES="/opt/local/opensn/gcc/14.2.0/dependencies/lib/libf2cblas.a" \
+            -DLAPACK_LIBRARIES="/opt/local/opensn/gcc/14.2.0/dependencies/lib/libf2cblas.a" \
+            -DOPENSN_WITH_CUDA=ON \
+            -DCMAKE_CUDA_ARCHITECTURES=89 \
+            -DOPENSN_WITH_PYTHON_MODULE=ON \
+            ..
+          make -j
       - name: test
         shell: bash
         run: |
@@ -95,7 +110,16 @@ jobs:
           module load cuda/12.9 python3/3.12.3 rocm/7.1.1 opensn/clang/19
           export HIP_PLATFORM=nvidia
           export HIP_COMPILER=nvcc
-          mkdir build && cd build && cmake -DOPENSN_WITH_HIP=ON -DCMAKE_HIP_ARCHITECTURES=89 -DOPENSN_WITH_PYTHON_MODULE=ON .. && make -j && cd ..
+          mkdir build
+          cd build
+          cmake \
+            -DBLAS_LIBRARIES="/opt/local/opensn/clang/19.1.5/dependencies/lib/libf2cblas.a" \
+            -DLAPACK_LIBRARIES="/opt/local/opensn/clang/19.1.5/dependencies/lib/libf2cblas.a" \
+            -DOPENSN_WITH_HIP=ON \
+            -DCMAKE_HIP_ARCHITECTURES=89 \
+            -DOPENSN_WITH_PYTHON_MODULE=ON \
+            ..
+          make -j
       - name: test
         shell: bash
         run: |

.github/workflows/tidy.yaml

@@ -20,7 +20,13 @@ jobs:
         shell: bash
         run: |
           module load python3/3.12.3 opensn/clang/21
-          mkdir build && cd build && cmake -DOPENSN_WITH_PYTHON_MODULE=ON .. && make -j && cd ..
+          mkdir build
+          cd build
+          cmake \
+            -DBLAS_LIBRARIES="/opt/local/opensn/clang/21.1.0/dependencies/lib/libf2cblas.a" \
+            -DLAPACK_LIBRARIES="/opt/local/opensn/clang/21.1.0/dependencies/lib/libf2cblas.a" \
+            -DOPENSN_WITH_PYTHON_MODULE=ON ..
+          make -j
       - name: clang-tidy
         shell: bash
         run: |

.github/workflows/weekly.yaml

@@ -14,7 +14,14 @@ jobs:
         shell: bash
         run: |
           module load python3/3.12.3 opensn/gcc/14
-          mkdir build && cd build && cmake .. && make -j && cd ..
+          mkdir build
+          cd build
+          cmake \
+            -DBLAS_LIBRARIES="/opt/local/opensn/gcc/14.2.0/dependencies/lib/libf2cblas.a" \
+            -DLAPACK_LIBRARIES="/opt/local/opensn/gcc/14.2.0/dependencies/lib/libf2cblas.a" \
+            ..
+          make -j
+
       - name: test
         shell: bash
         run: |

CMakeLists.txt

@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.29)
 
 project(opensn
     VERSION 1.0.1
-    LANGUAGES C CXX
+    LANGUAGES C CXX Fortran
 )
 
 set(CMAKE_CXX_STANDARD 20)
@@ -14,6 +14,8 @@ include(CMakePackageConfigHelpers)
 include(GNUInstallDirs)
 include(CheckTypeSize)
 include(CheckSymbolExists)
+include(CheckFortranFunctionExists)
+include(CMakePushCheckState)
 include(CheckCXXCompilerFlag)
 include(CheckLinkerFlag)
 include(FetchContent)
@@ -138,7 +140,17 @@ if(OPENSN_WITH_PYTHON_MODULE)
 endif()
 
 # dependencies
-find_package(MPI REQUIRED)
+find_package(LAPACK REQUIRED)
+if(TARGET LAPACK::LAPACK)
+  cmake_push_check_state(RESET)
+
+  set(CMAKE_REQUIRED_LIBRARIES LAPACK::LAPACK)
+  check_fortran_function_exists(dgesv OPENSN_HAVE_DGESV)
+
+  cmake_pop_check_state()
+endif()
+
+find_package(MPI REQUIRED COMPONENTS C)
 find_package(mpicpp-lite 2.7.1 REQUIRED)
 
 find_package(HDF5 REQUIRED COMPONENTS C HL)
@@ -367,7 +379,7 @@ if (OPENSN_WITH_GPU)
       $<BUILD_INTERFACE:${PETSC_INCLUDE_DIR}>
       $<BUILD_INTERFACE:${Boost_INCLUDE_DIRS}>
   )
-  target_link_libraries(libopensngpu PRIVATE MPI::MPI_CXX)
+  target_link_libraries(libopensngpu PRIVATE MPI::MPI_C)
 endif()
 
 target_link_libraries(libopensn
@@ -377,7 +389,9 @@ target_link_libraries(libopensn
     caliper
     ${HDF5_LIBRARIES}
     mpicpp-lite::mpicpp-lite
-    MPI::MPI_CXX
+    MPI::MPI_C
+    PRIVATE
+    LAPACK::LAPACK
 )
 if (OPENSN_WITH_GPU)
   target_link_libraries(libopensn INTERFACE libopensngpu)

pyopensn/CMakeLists.txt

@@ -39,6 +39,6 @@ target_link_libraries(__init__
     libopensn
     libopensnpy
     ${PETSC_LIBRARY}
-    MPI::MPI_CXX
+    MPI::MPI_C
     caliper
 )

python/CMakeLists.txt

@@ -27,7 +27,7 @@ target_link_libraries(libopensnpy
     PUBLIC
     libopensn
     ${PETSC_LIBRARY}
-    MPI::MPI_CXX
+    MPI::MPI_C
     caliper
     pybind11::embed
 )

test/CMakeLists.txt

@@ -19,7 +19,7 @@ target_link_libraries(opensn-unit
     ${PETSC_LIBRARY}
     ${HDF5_LIBRARIES}
     caliper
-    MPI::MPI_CXX
+    MPI::MPI_C
     GTest::gmock_main
     GTest::gtest_main
 )