-- Fix CMake 4.x compatibility and FreeBSD build issues.
-- Move cmake_minimum_required() before project() and raise it to 3.5.
-- Replace FindHDF5 with explicit find_path/find_library because CMake's
-- FindHDF5 fails to determine HDF5 C flags and misses the HL library.
-- Remove the obsolete boost_system component (header-only since Boost 1.70).
--- CMakeLists.txt.orig	2023-10-22 14:26:48 UTC
+++ CMakeLists.txt
@@ -6,10 +6,10 @@ ENDIF()
   SET( CMAKE_BUILD_TYPE Release CACHE STRING "Set to either \"Release\" or \"Debug\"" )
 ENDIF()
 
+cmake_minimum_required(VERSION 3.5)
+
 PROJECT(CSXCAD CXX C)
 
-cmake_minimum_required(VERSION 3.0)
-
 if (NOT WIN32)
  set (CMAKE_CXX_FLAGS -fPIC )
 endif()
@@ -100,9 +100,12 @@ INCLUDE_DIRECTORIES( ${TinyXML_INCLUDE_DIR} )
 
 INCLUDE_DIRECTORIES( ${TinyXML_INCLUDE_DIR} )
 
-find_package(HDF5 1.8 COMPONENTS C HL REQUIRED)
+find_path(HDF5_INCLUDE_DIRS hdf5.h HINTS ${LOCALBASE}/include REQUIRED)
+find_library(HDF5_C_LIBRARY hdf5 HINTS ${LOCALBASE}/lib REQUIRED)
+find_library(HDF5_HL_LIBRARY hdf5_hl HINTS ${LOCALBASE}/lib REQUIRED)
+set(HDF5_LIBRARIES ${HDF5_C_LIBRARY} ${HDF5_HL_LIBRARY})
+set(HDF5_HL_LIBRARIES ${HDF5_HL_LIBRARY})
 INCLUDE_DIRECTORIES (${HDF5_INCLUDE_DIRS})
-link_directories(${HDF5_LIBRARY_DIRS})
 # hdf5 compat
 ADD_DEFINITIONS( -DH5_USE_16_API )
 #ADD_DEFINITIONS( -DH5_BUILT_AS_DYNAMIC_LIB )
@@ -120,7 +123,6 @@ find_package(Boost 1.46 COMPONENTS
 # TODO what are the needed libs?
 find_package(Boost 1.46 COMPONENTS
   thread
-  system
   date_time
   serialization
   chrono