Add CMake build system

CMakeLists.txt

@@ -0,0 +1,87 @@
+cmake_minimum_required(VERSION 3.15 FATAL_ERROR)
+
+# Avoid warning about DOWNLOAD_EXTRACT_TIMESTAMP in CMake 3.24:
+if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.24.0")
+    cmake_policy(SET CMP0135 NEW)
+endif()
+
+project(HemePure_Tools VERSION 0.1.0 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 11)
+
+find_package(ZLIB REQUIRED)
+find_package(MPI)
+
+add_executable(gmy2gmy+ gmy2gmy+/gmy2gmy+.cc)
+target_link_libraries(gmy2gmy+ ZLIB::ZLIB)
+
+add_executable(gmy2lets gmy2inlets/gmy2lets.cc)
+target_link_libraries(gmy2lets PRIVATE ZLIB::ZLIB)
+target_include_directories(gmy2lets PRIVATE ZLIB::ZLIB)
+
+add_executable(vx2ascii vx2ascii/vx2ascii.cc)
+
+if (MPI_FOUND)
+    add_executable(mpivx2gmy vx2gmy/mpivx2gmy.cc)
+    target_include_directories(mpivx2gmy PRIVATE ${MPI_CXX_INCLUDE_DIRS})
+    target_link_libraries(mpivx2gmy PRIVATE MPI::MPI_CXX)
+    target_link_libraries(mpivx2gmy PRIVATE ZLIB::ZLIB)
+endif()
+
+add_executable(vx2paraview vx2paraview/vx2paraview.cc)
+
+add_executable(vx2refine vx2refine/vx2refine.cc)
+target_compile_definitions(vx2refine 
+    PUBLIC LARGEFILE_SOURCE=1 FILE_OFFSET_BITS=64
+)
+
+if (MPI_FOUND)
+    add_executable(mpivx2refine vx2refine/parallel/mpivx2refine.cc)
+    target_compile_definitions(mpivx2refine 
+        PUBLIC LARGEFILE_SOURCE=1 FILE_OFFSET_BITS=64
+    )
+    target_include_directories(mpivx2refine PRIVATE MPI::MPI_CXX)
+    target_link_libraries(mpivx2refine PRIVATE MPI::MPI_CXX)
+    target_link_libraries(mpivx2refine PRIVATE ZLIB::ZLIB)
+endif()
+
+option(BUILD_VOXELIZER "Build the Palabos-based voxelizer" OFF)
+
+if (BUILD_VOXELIZER)
+
+    include(FetchContent)
+    FetchContent_Declare(
+        palabos
+        URL https://gitlab.com/unigespc/palabos/-/archive/v2.3.0/palabos-v2.3.0.tar.gz
+        URL_HASH SHA256=2085de7b06cc9c4a7b3457f7c2d17747d8960c0f861e32fc883acd504dfc1e23
+    )
+    # Only the palabos headers appear to be needed!
+    FetchContent_Populate(palabos)
+
+    #add_library(tinyxml
+    #    ${palabos_SOURCE_DIR}/externalLibraries/tinyxml/tinyxml.cpp
+    #    ${palabos_SOURCE_DIR}/externalLibraries/tinyxml/tinyxmlerror.cpp
+    #    ${palabos_SOURCE_DIR}/externalLibraries/tinyxml/tinyxmlparser.cpp
+    #)
+    #target_include_directories(tinyxml PUBLIC
+    #    ${palabos_SOURCE_DIR}/externalLibraries/tinyxml)
+
+    add_executable(voxelizer voxelizer/source/voxelizer_MultiInput.cpp)
+    target_include_directories(voxelizer
+        PRIVATE ${palabos_SOURCE_DIR}/src
+        PRIVATE ${palabos_SOURCE_DIR}/externalLibraries)
+
+endif()
+
+#
+# Installation
+#
+install(TARGETS gmy2gmy+ gmy2lets vx2ascii vx2paraview vx2refine RUNTIME)
+
+if(MPI_FOUND)
+    install(TARGETS mpivx2gmy mpivx2refine RUNTIME)
+endif()
+
+if(BUILD_VOXELIZER)
+    install(TARGETS voxelizer RUNTIME)
+endif()

vx2refine/parallel/mpivx2refine.cc

@@ -225,6 +225,7 @@ int vx2refine(char *fname_vx, char *fnameRef_vx, uint64_t bsize, MPI_Comm comm)
     free(record);
     free(refined);
 
+    return 0;
 }
 
 int main(int argc, char **argv)