Add changes to test functions for checking spack versions of hdf5 with (#29159)

develop in the version string.  The versions from the HDF5 code were not
matching because 'develop-' is not part of the HDF5 version.  Also, the
develop-x.x versions in spack omit the release version (third) number
because the branch spans all of the release versions.

var/spack/repos/builtin/packages/hdf5/package.py

@@ -476,7 +476,25 @@ def _check_install(self):
         print("Checking HDF5 installation...")
         checkdir = "spack-check"
         with working_dir(checkdir, create=True):
-            source = r"""
+            # Because the release number in a develop branch is not fixed,
+            # only the major and minor version numbers are compared.
+            # Otherwise all 3 numbers are checked.
+            if 'develop' in str(spec.version.up_to(3)):
+                source = r"""
+#include <hdf5.h>
+#include <assert.h>
+#include <stdio.h>
+int main(int argc, char **argv) {
+  unsigned majnum, minnum, relnum;
+  herr_t herr = H5get_libversion(&majnum, &minnum, &relnum);
+  assert(!herr);
+  printf("HDF5 version %d.%d %u.%u\n", H5_VERS_MAJOR, H5_VERS_MINOR,
+         majnum, minnum);
+  return 0;
+}
+"""
+            else:
+                source = r"""
 #include <hdf5.h>
 #include <assert.h>
 #include <stdio.h>
@@ -492,6 +510,12 @@ def _check_install(self):
             expected = """\
 HDF5 version {version} {version}
 """.format(version=str(spec.version.up_to(3)))
+            if 'develop' in expected:
+                # Remove 'develop-' from the version in spack for checking
+                # version against the version in the HDF5 code.
+                expected = """\
+HDF5 version {version} {version}
+""".format(version=str(spec.version.up_to(3)).partition("-")[2])
             with open("check.c", 'w') as f:
                 f.write(source)
             if '+mpi' in spec:
@@ -523,6 +547,10 @@ def _check_install(self):
     def _test_check_versions(self):
         """Perform version checks on selected installed package binaries."""
         spec_vers_str = 'Version {0}'.format(self.spec.version)
+        if 'develop' in spec_vers_str:
+            # Remove 'develop-' from the version in spack for checking
+            # version against the version in the HDF5 code.
+            spec_vers_str = spec_vers_str.partition("-")[2]
 
         exes = [
             'h5copy', 'h5diff', 'h5dump', 'h5format_convert', 'h5ls',