[codex] Wrap libneo hdf5_tools in KAMEL

CMakeLists.txt

@@ -99,6 +99,20 @@ endif()
 
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
 
+# Fetch libneo once at the top level so every KAMEL subproject uses the same
+# build tree and module directory.
+set(LIBNEO_BUILD_TESTING OFF CACHE BOOL "Disable libneo tests" FORCE)
+set(LIBNEO_ENABLE_TESTS OFF CACHE BOOL "Disable libneo tests" FORCE)
+set(LIBNEO_ENABLE_GOLDEN_TESTS OFF CACHE BOOL "Disable libneo golden tests" FORCE)
+set(_KAMEL_BUILD_TESTING_SAVED ${BUILD_TESTING})
+set(BUILD_TESTING OFF)
+if(NOT TARGET LIBNEO::magfie)
+    find_or_fetch(libneo)
+endif()
+set(BUILD_TESTING ${_KAMEL_BUILD_TESTING_SAVED})
+set(KAMEL_LIBNEO_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/libneo" CACHE INTERNAL
+    "Binary dir for the shared libneo subproject")
+
 # Unified build: add subprojects for KiLCA, KIM, and QL-Balance
 add_subdirectory(common/math)
 add_subdirectory(common/logger)

PreProc/fourier/CMakeLists.txt

@@ -20,11 +20,11 @@ include(Util)
 # Only fetch libneo if not already available (prevents duplicate targets)
 if(NOT TARGET LIBNEO::magfie)
     find_or_fetch(libneo)
-    include_directories(${CMAKE_CURRENT_BINARY_DIR}/libneo/include)
+    set(_FOURIER_LIBNEO_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/libneo")
 else()
-    # Use libneo from common/equil when building as part of KAMEL
-    include_directories(${CMAKE_BINARY_DIR}/common/equil/libneo/include)
+    set(_FOURIER_LIBNEO_BINARY_DIR "${KAMEL_LIBNEO_BINARY_DIR}")
 endif()
+include_directories(${_FOURIER_LIBNEO_BINARY_DIR}/include)
 
 # Add netcdf library paths (needed because libneo's link_directories doesn't propagate)
 find_program(NF_CONFIG "nf-config")
@@ -62,7 +62,7 @@ if(TARGET kamel_equil)
         LIBNEO::magfie
     )
     target_include_directories(fouriermodes PUBLIC
-        ${CMAKE_BINARY_DIR}/common/equil/libneo/include
+        ${_FOURIER_LIBNEO_BINARY_DIR}/include
         ${KAMEL_EQUIL_INCLUDE_DIRS}
     )
 else()

QL-Balance/CMakeLists.txt

@@ -137,7 +137,7 @@ set(LIBNEO_BUILD_TESTING OFF CACHE BOOL "Disable libneo tests" FORCE)
 if(NOT TARGET LIBNEO::neo)
     find_or_fetch(libneo)
 endif()
-include_directories(${CMAKE_CURRENT_BINARY_DIR}/../libneo/include)
+include_directories(${KAMEL_LIBNEO_BINARY_DIR}/include)
 
 add_dependencies(ql-balance_lib sparse)
 

common/equil/CMakeLists.txt

@@ -67,7 +67,7 @@ set_target_properties(kamel_equil PROPERTIES
 target_include_directories(kamel_equil
     PUBLIC
         ${EQUIL_MODULE_DIR}
-        ${CMAKE_CURRENT_BINARY_DIR}/libneo/include
+        ${KAMEL_LIBNEO_BINARY_DIR}/include
 )
 
 # Link libneo magfie for equilibrium field functionality

common/hdf5_tools/CMakeLists.txt

@@ -1,40 +1,30 @@
-# HDF5 tools library for KAMEL project
-# Provides common HDF5 wrapper functions for all KAMEL codes
-
-# Find HDF5 with Fortran support
 cmake_policy(SET CMP0074 NEW)
 find_package(HDF5 REQUIRED COMPONENTS Fortran Fortran_HL)
 
-if (NOT ${HDF5_FOUND})
-    message(FATAL_ERROR "HDF5 with Fortran support not found. Please set environment variable HDF5_ROOT to the correct path")
-endif()
-
-# Create the HDF5 tools library
 add_library(kamel_hdf5_tools STATIC
     hdf5_tools.f90
     hdf5_tools_f2003.f90
 )
 
-# Set properties for the library
 set_target_properties(kamel_hdf5_tools PROPERTIES
     POSITION_INDEPENDENT_CODE ON
     Fortran_MODULE_DIRECTORY ${CMAKE_BINARY_DIR}/modules
 )
 
-# Include directories
+add_dependencies(kamel_hdf5_tools LIBNEO::hdf5_tools)
 target_include_directories(kamel_hdf5_tools
     PUBLIC
         ${HDF5_INCLUDE_DIRS}
+        ${KAMEL_LIBNEO_BINARY_DIR}/include
         ${CMAKE_BINARY_DIR}/modules
 )
 
-# Link HDF5 libraries
 target_link_libraries(kamel_hdf5_tools
     PUBLIC
+        LIBNEO::hdf5_tools
         ${HDF5_Fortran_LIBRARIES}
         ${HDF5_Fortran_HL_LIBRARIES}
 )
 
-# Export for use by other KAMEL components
 set(KAMEL_HDF5_TOOLS_LIBRARIES kamel_hdf5_tools CACHE INTERNAL "KAMEL HDF5 tools library")
 set(KAMEL_HDF5_TOOLS_INCLUDE_DIRS ${CMAKE_BINARY_DIR}/modules CACHE INTERNAL "KAMEL HDF5 tools include directory")