HDF5: make much more robust across platforms

This addresses various real-world problems with HDF5 pkg-config, including

* hdf*.pc with package versions as part of the filename
* malformed hdf*.pc missing the commonly-used HDF5 HL module

---

Additionally, this refactors more complicated dependencies such as
HDF5 and OpenMPI. This may help us deduplicate internal dependency
code in the future.

HDF5 selftest: improve platform-agnostic test

ci: init demo github action for HDF5 framework

ci Actions: hold off on MSYS2 for now [skip ci]

hdf5: ensure C libraries always included

ci: mac hdf5--use clang+gfortran

1 files changed, 11 insertions, 24 deletions

diff --git a/test cases/frameworks/25 hdf5/meson.build b/test cases/frameworks/25 hdf5/meson.build
index 9033354..20bc5cd 100644
--- a/test cases/frameworks/25 hdf5/meson.build
+++ b/test cases/frameworks/25 hdf5/meson.build
@@ -1,40 +1,27 @@
-project('hdf5_test', 'c', 'cpp')
-
-if build_machine.system() == 'darwin'
-  error('MESON_SKIP_TEST: HDF5 CI image not setup for OSX.')
-endif
-
-if build_machine.system() == 'cygwin'
-  error('MESON_SKIP_TEST: HDF5 CI image not setup for Cygwin.')
-endif
+project('hdf5_framework', 'c')
 
+# NOTE: all HDF5 languages must have HDF5 C library working.
 
 # --- C tests
 h5c = dependency('hdf5', language : 'c', required : false)
 if not h5c.found()
-  error('MESON_SKIP_TEST: HDF5 C library not found, skipping HDF5 framework tests.')
+  error('MESON_SKIP_TEST: HDF5 C library not found.')
 endif
 exec = executable('exec', 'main.c', dependencies : h5c)
-
-test('HDF5 C', exec)
+test('HDF5 C', exec, timeout: 30)
 
 # --- C++ tests
-h5cpp = dependency('hdf5', language : 'cpp', required : false)
-if h5cpp.found()
+if add_languages('cpp')
+  h5cpp = dependency('hdf5', language : 'cpp', required : false, disabler: true)
   execpp = executable('execpp', 'main.cpp', dependencies : h5cpp)
-  test('HDF5 C++', execpp)
+  test('HDF5 C++', execpp, timeout: 30)
 endif
 
 # --- Fortran tests
-if build_machine.system() != 'windows'
-  add_languages('fortran')
-
-  h5f = dependency('hdf5', language : 'fortran', required : false)
-  if h5f.found()
-    exef = executable('exef', 'main.f90', dependencies : h5f)
-
-    test('HDF5 Fortran', exef)
-  endif
+if add_languages('fortran')
+  h5f = dependency('hdf5', language : 'fortran', required : false, disabler: true)
+  exef = executable('exef', 'main.f90', dependencies : h5f)
+  test('HDF5 Fortran', exef, timeout: 30)
 endif
 
 # Check we can apply a version constraint