scalapack: submodule if needed

.github/workflows/ci_build.yml

@@ -16,15 +16,18 @@ on:
 jobs:
 
   linux:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
+    env:
+      CC: gcc-13
+      FC: gfortran-13
 
     steps:
     - uses: actions/checkout@v4
 
     - name: Install prereqs
       run: |
         sudo apt update
-        sudo apt install --no-install-recommends libopenmpi-dev openmpi-bin
+        sudo apt install --no-install-recommends libopenmpi-dev openmpi-bin liblapack-dev
 
     - name: configure
       run: cmake --preset default

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "scalapack"]
+	path = scalapack
+	url = https://github.com/scivision/scalapack.git

cmake/GitSubmodule.cmake

@@ -0,0 +1,94 @@
+# else it's an offline archive
+if(IS_DIRECTORY ${PROJECT_SOURCE_DIR}/.git)
+  find_package(Git REQUIRED)
+endif()
+
+function(git_submodule submod_dir)
+# get/update Git submodule directory to CMake, assuming the
+# Git submodule directory is a CMake project.
+
+# EXISTS, do not use IS_DIRECTORY as in submodule .git is a file not a directory
+if(NOT EXISTS ${PROJECT_SOURCE_DIR}/.git)
+  message(DEBUG "${PROJECT_SOURCE_DIR} is not a Git repository, skipping submodule ${submod_dir}")
+  return()
+endif()
+
+if(EXISTS ${submod_dir}/CMakeLists.txt)
+  return()
+endif()
+
+execute_process(COMMAND ${GIT_EXECUTABLE} submodule update --init --recursive -- ${submod_dir}
+WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+RESULT_VARIABLE err)
+
+if(NOT err EQUAL 0)
+  message(FATAL_ERROR "${submod_dir} Git submodule failed to retrieve.")
+endif()
+
+endfunction()
+
+
+function(report_submodule submod_dir)
+  # get the following information for the Git submodule
+  # git remote -v
+  # git status --porcelain
+  # git commit hash
+
+  if(NOT EXISTS ${submod_dir}/.git)
+    message(VERBOSE "${submod_dir} is not a Git submodule, skipping}")
+    return()
+  endif()
+
+  set(git_remote "origin")
+  # Git default remote name
+
+  execute_process(COMMAND ${GIT_EXECUTABLE} -C ${submod_dir} remote get-url ${git_remote}
+  OUTPUT_VARIABLE r
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+  RESULT_VARIABLE ret
+  )
+
+  if(NOT ret EQUAL 0)
+    message(STATUS "Git remote failed for ${submod_dir}")
+    return()
+  endif()
+
+  if(r MATCHES "@")
+    # remove token from remote URL
+    string(REGEX REPLACE "://[^@]+@" "://" r "${r}")
+  endif()
+
+  execute_process(COMMAND ${GIT_EXECUTABLE} -C ${submod_dir} status --porcelain
+  OUTPUT_VARIABLE p
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+  RESULT_VARIABLE ret
+  )
+
+  if(NOT ret EQUAL 0)
+    message(STATUS "Git status failed for ${submod_dir}")
+    return()
+  endif()
+
+  string(LENGTH "${p}" p_len)
+  if(p_len EQUAL 0)
+    set(porcelain "clean")
+  else()
+    set(porcelain "dirty")
+  endif()
+
+  execute_process(COMMAND ${GIT_EXECUTABLE} -C ${submod_dir} rev-parse --short HEAD
+  OUTPUT_VARIABLE h
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+  RESULT_VARIABLE ret
+  )
+
+  if(NOT ret EQUAL 0)
+    message(STATUS "Git rev-parse failed for ${submod_dir}")
+    return()
+  endif()
+
+  get_filename_component(name ${submod_dir} NAME)
+
+  message(STATUS "${name} remote: ${r} ${porcelain} ${h}")
+
+endfunction()

cmake/libraries.json

@@ -2,10 +2,6 @@
   "lapack": {
     "git": "https://github.com/Reference-LAPACK/lapack/archive/refs/tags/v3.12.0.tar.gz"
   },
-  "scalapack": {
-    "git": "https://github.com/scivision/scalapack.git",
-    "tag": "7d2a199b91187f92c553179e22f76f42bc813728"
-  },
   "metis": {
     "git": "https://github.com/scivision/METIS.git",
     "tag": "v5.1.0.3"

cmake/scalapack.cmake

@@ -1,6 +1,3 @@
-include(ExternalProject)
-include(GNUInstallDirs)
-
 if(find)
 
 if(NOT DEFINED SCALAPACK_VENDOR)
@@ -31,60 +28,6 @@ if(SCALAPACK_FOUND)
   return()
 endif()
 
-set(scalapack_cmake_args
--DBUILD_SINGLE:BOOL=${BUILD_SINGLE}
--DBUILD_DOUBLE:BOOL=${BUILD_DOUBLE}
--DBUILD_COMPLEX:BOOL=${BUILD_COMPLEX}
--DBUILD_COMPLEX16:BOOL=${BUILD_COMPLEX16}
--DBUILD_SHARED_LIBS:BOOL=${BUILD_SHARED_LIBS}
--DCMAKE_INSTALL_PREFIX:PATH=${CMAKE_INSTALL_PREFIX}
--DCMAKE_C_COMPILER:PATH=${CMAKE_C_COMPILER}
--DCMAKE_Fortran_COMPILER:PATH=${CMAKE_Fortran_COMPILER}
--DBUILD_TESTING:BOOL=off
--DCMAKE_BUILD_TYPE:STRING=Release
--DCMAKE_TLS_VERIFY:BOOL=${CMAKE_TLS_VERIFY}
-)
-
-file(READ ${CMAKE_CURRENT_LIST_DIR}/libraries.json json)
-
-string(JSON scalapack_url GET ${json} scalapack git)
-string(JSON scalapack_tag GET ${json} scalapack tag)
-
-set(SCALAPACK_INCLUDE_DIRS ${CMAKE_INSTALL_FULL_INCLUDEDIR})
-file(MAKE_DIRECTORY ${SCALAPACK_INCLUDE_DIRS})
-if(NOT IS_DIRECTORY ${SCALAPACK_INCLUDE_DIRS})
-  message(FATAL_ERROR "Could not create directory: ${SCALAPACK_INCLUDE_DIRS}")
-endif()
-
-if(BUILD_SHARED_LIBS)
-  set(SCALAPACK_LIBRARIES ${CMAKE_INSTALL_FULL_LIBDIR}/${CMAKE_SHARED_LIBRARY_PREFIX}scalapack${CMAKE_SHARED_LIBRARY_SUFFIX}
-    ${CMAKE_INSTALL_FULL_LIBDIR}/${CMAKE_SHARED_LIBRARY_PREFIX}blacs${CMAKE_SHARED_LIBRARY_SUFFIX}
-  )
-else()
-  set(SCALAPACK_LIBRARIES ${CMAKE_INSTALL_FULL_LIBDIR}/${CMAKE_STATIC_LIBRARY_PREFIX}scalapack${CMAKE_STATIC_LIBRARY_SUFFIX}
-    ${CMAKE_INSTALL_FULL_LIBDIR}/${CMAKE_STATIC_LIBRARY_PREFIX}blacs${CMAKE_STATIC_LIBRARY_SUFFIX}
-  )
-endif()
-
-ExternalProject_Add(scalapack
-GIT_REPOSITORY ${scalapack_url}
-GIT_TAG ${scalapack_tag}
-GIT_SHALLOW true
-CMAKE_ARGS ${scalapack_cmake_args}
-TEST_COMMAND ""
-BUILD_BYPRODUCTS ${SCALAPACK_LIBRARIES}
-CONFIGURE_HANDLED_BY_BUILD true
-USES_TERMINAL_DOWNLOAD true
-USES_TERMINAL_UPDATE true
-USES_TERMINAL_PATCH true
-USES_TERMINAL_CONFIGURE true
-USES_TERMINAL_BUILD true
-USES_TERMINAL_INSTALL true
-USES_TERMINAL_TEST true
-)
-
-add_library(SCALAPACK::SCALAPACK INTERFACE IMPORTED GLOBAL)
-target_include_directories(SCALAPACK::SCALAPACK INTERFACE ${SCALAPACK_INCLUDE_DIRS})
-target_link_libraries(SCALAPACK::SCALAPACK INTERFACE ${SCALAPACK_LIBRARIES})
-
-add_dependencies(SCALAPACK::SCALAPACK scalapack)
+include(${CMAKE_CURRENT_LIST_DIR}/GitSubmodule.cmake)
+git_submodule(${PROJECT_SOURCE_DIR}/scalapack)
+add_subdirectory(${PROJECT_SOURCE_DIR}/scalapack)