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Author: scivision

CMakeLists.txt

@@ -0,0 +1,19 @@
+# real32, real64 supported by HDF5 1.10 https://support.hdfgroup.org/HDF5/doc/RM/PredefDTypes.html
+cmake_minimum_required (VERSION 3.10)
+project(hdf5iface Fortran)
+enable_testing()
+
+include(cmake/compilers.cmake)
+
+include(cmake/hdf5.cmake)
+
+add_library(hdf5oo src/hdf5_interface.f90)
+# need BOTH includes, for some systems!
+target_include_directories(hdf5oo PRIVATE ${HDF5_INCLUDE_DIRS} ${HDF5_Fortran_INCLUDE_DIRS})
+target_link_libraries(hdf5oo PRIVATE ${HDF5_Fortran_LIBRARIES} ${HDF5_Fortran_HL_LIBRARIES})
+target_compile_options(hdf5oo PRIVATE ${HDF5_Fortran_DEFINITIONS})
+
+add_executable(testh5 src/test_hdf5_ifc.f90)
+target_link_libraries(testh5 PRIVATE hdf5oo)
+target_compile_options(testh5 PRIVATE -Wno-compare-reals)
+add_test(NAME h5oo COMMAND testh5)

README.md

@@ -4,7 +4,7 @@
 # Object-oriented Fortran 2018 HDF5 interface
 
 Straightforward single-file/module access to HDF5.
-Abstracts away the messy parts of HDF5 so that you can read/write various types/ranks of data with a single command.
+This thin object-oriented modern Fortran library abstracts away the messy parts of HDF5 so that you can read/write various types/ranks of data with a single command.
 
 Polymorphic API with read/write integer / real32/64:
 
@@ -39,15 +39,21 @@ Requirements:
 Build this HDF5 OO Fortran interface:
 
 ```sh
-cd app
-cmake ../src
+cd bin
+cmake ..
+
 cmake --build .
 
 ctest -V
 ```
 
 The library `libh5oo` is built, link it into your program as usual.
 
+
+---
+
+If you need to specify a particular HDF5 library, use `cmake -DHDF5_ROOT=/path/to/hdf5lib ..`
+
 ## Usage
 
 All examples assume:
@@ -58,7 +64,8 @@ type(hdf5_file) :: h5f
 ```
 
 
-* gzip compression may be applied for rank ≥ 2 arrays by setting `comp_lvl` to a value betwen 1 and 9. Shuffle filter is automatically applied for better compression
+* gzip compression may be applied for rank ≥ 2 arrays by setting `comp_lvl` to a value betwen 1 and 9. 
+  Shuffle filter is automatically applied for better compression
 * string attributes may be applied to any variable at time of writing or later.
 * `chunk_size` option may be set for better compression
 

app/.ignore renamed to bin/.ignore

@@ -26,12 +26,20 @@ elseif(CMAKE_Fortran_COMPILER_ID STREQUAL PGI)
 
 elseif(CMAKE_Fortran_COMPILER_ID STREQUAL Flang) 
   list(APPEND FFLAGS -Mallocatable=03)
-  link_libraries(-static-flang-libs)
 elseif(CMAKE_Fortran_COMPILER_ID STREQUAL NAG)
   list(APPEND FFLAGS -u -C=all)
 endif()
 
 
 include(CheckFortranSourceCompiles)
-check_fortran_source_compiles("program a; character :: b; error stop b; end" f18errorstop
-                              SRC_EXT f90)
+check_fortran_source_compiles("
+program a
+character :: b
+error stop b
+end program" 
+  f18errorstop
+  SRC_EXT f90)
+                              
+if(NOT f18errorstop)
+  message(FATAL_ERROR "f2018 error stop with variable required, which is not supported by ${CMAKE_Fortran_COMPILER_ID} ${CMAKE_Fortran_COMPILER_VERSION}")
+endif()