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Install.md

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Install h5fortran

h5fortran is typically built and installed with CMake or Meson.

Requirements

  • Fortran 2018 compiler (this project uses submodule and error stop). For example, Gfortran ≥ 7 or Intel oneAPI.
  • HDF5 Fortran library (>= 1.8.7, including 1.10.x and 1.12.x)
    • MacOS / Homebrew: brew install gcc hdf5
    • Linux / Windows Subsystem for Linux: apt install gfortran libhdf5-dev
    • Windows MSYS2: pacman -S mingw-w64-x86_64-hdf5
    • build from source (optional): python scripts/build_hdf5.py

Note that some precompiled HDF5 libraries have only C / C++ without Fortran.

The library libh5fortran is built, link it into your program as usual along with the HDF5 libraries and include files.

CMake

Build and self-test via:

cmake -B build
cmake --build build

# optional self-test
cd build
ctest

(optional) to install to a directory like ~/h5fortran:

cmake -B build -DCMAKE_INSTALL_PREFIX=~/h5fortran
cmake --install build

use h5fortran from your project

cmake -B build -Dh5fortran_ROOT=~/h5fortran/

and in your CMakeLists.txt

cmake_minimum_required(VERSION 3.20)
project(myProject LANGUAGES Fortran)

find_package(h5fortran)

if(NOT h5fortran_FOUND)
  include(FetchContent)

  FetchContent_Declare(H5FORTRAN
    GIT_REPOSITORY https://github.com/geospace-code/h5fortran.git
    GIT_TAG v3.6.6)
  FetchContent_MakeAvailable(H5FORTRAN)
endif()

# --- your project targets:

add_executable(myProj main.f90)
target_link_libraries(myProj PRIVATE h5fortran::h5fortran)

and where the main.f90 is like:

program main

use h5fortran, only : hdf5_file
implicit none

type(hdf5_file) :: h5f

call h5f%open('h5fortran_example2.h5', action='w')
call h5f%write('/x', 123)
call h5f%close()


end program

[optional] create distributable archive

If you wish to create a package archive that is usable on systems with compatible Fortran ABI, after building:

cpack --config build/CPackConfig.cmake

[optional] specify a particular HDF5 library

cmake -DHDF5_ROOT=/path/to/hdf5lib -B build

or set environment variable HDF5_ROOT=/path/to/hdf5lib

Meson

To build h5fortran as a standalone project

meson build

meson test -C build

h5fortran Meson subproject

To include h5fortran as a Meson subproject, in the main project meson.build (that uses h5fortran) have like:

hdf5_proj = subproject('h5fortran')
hdf5_interface = hdf5_proj.get_variable('hdf5_interface')

my_exe = executable('myexe', 'main.f90', dependencies: hdf5_interface)

and have a file in the main project subprojects/h5fortran.wrap containing:

[wrap-git]
directory = h5fortran
url = https://github.com/geospace-code/h5fortran.git
revision = v3.6.5

Standalone compiler wrapper

h5fortran can be used from the HDF5 compiler wrapper "h5fc" like:

h5fc -I~/h5fortran/include myprogram.f90 ~/h5fortran/lib/libh5fortran.a