Switch default for HDF5_GENERATE_HEADERS (CMake) to OFF.

release_docs/INSTALL_CMake.txt

@@ -874,7 +874,7 @@ HDF5_ENABLE_PREADWRITE         "Use pread/pwrite in sec2/log/core VFDs in place
 HDF5_ENABLE_TRACE              "Enable API tracing capability"                                   OFF
 HDF5_ENABLE_USING_MEMCHECKER   "Indicate that a memory checker is used"                          OFF
 HDF5_ENABLE_MAP_API            "Build the map API"                                               OFF
-HDF5_GENERATE_HEADERS          "Rebuild Generated Files"                                         ON
+HDF5_GENERATE_HEADERS          "Rebuild Generated Files"                                         OFF
 HDF5_BUILD_GENERATORS          "Build Test Generators"                                           OFF
 
 HDF5_JAVA_PACK_JRE             "Package a JRE installer directory"                               OFF

release_docs/RELEASE_PROCESS.md

@@ -94,7 +94,9 @@ For more information on the HDF5 versioning and backward and forward compatibili
     - `$ bin/h5vers -s X.Y.Z-{SR+1};` 
     - `$ git commit -m "Updated release preparation branch version number to X.Y.Z-{SR+1}"` 
     - `$ git push` 
-7. Update default configuration mode
+7. ** OBSOLETE CURRENTLY **
+   Most will disappear when autotools support is removed, and none of these are currently necessary
+   Update default configuration mode
     - `$ git checkout hdf5_X_Y_Z;` and `$ bin/switch_maint_mode -disable ./configure.ac` to disable `AM_MAINTAINER_MODE`. 
     - Need to set option `HDF5_GENERATE_HEADERS` to `OFF`, currently in line 996 of [src/CMakeLists.txt][u11].
     - Change the **release preparation branch**'s (i.e. hdf5_X_Y_Z) default configuration mode from development to production in [configure.ac][u12]. 
@@ -103,6 +105,7 @@ For more information on the HDF5 versioning and backward and forward compatibili
     - Under `if test "X-$BUILD_MODE" = X- ; then` change `BUILD_MODE=debug` to `BUILD_MODE=production`. 
     - Run `sh ./autogen.sh` to regenerate the UNIX build system files and commit the changes. (use `git status --ignored` to see the changes and `git add -f` to add all files. First delete any new files not to be committed, notably `src/H5public.h~` and `autom4te.cache/`.)
     - `$ git push with commit message listing change steps for creating release branch`
+    ** END OBSOLETE CURRENTLY **
 8. E-mail [email protected] to indicate that the code freeze on the release support branch (i.e. hdf5_X_Y) has been lifted and development on the next maintenance release can resume. The code freeze will remain in place on the release preparation branch (i.e. hdf5_X_Y_Z) indefinitely. 
 
 ### 7. Perform Release Testing (Test Automation Team | Release Manager | Project Leads)

src/CMakeLists.txt

@@ -1026,7 +1026,7 @@ set (H5_PUBLIC_GENERATED_HEADERS
     ${HDF5_SRC_DIR}/H5overflow.h
 )
 
-option (HDF5_GENERATE_HEADERS "Rebuild Generated Files" ON)
+option (HDF5_GENERATE_HEADERS "Rebuild Generated Files" OFF)
 if (HDF5_GENERATE_HEADERS)
   set_source_files_properties(${H5_GENERATED_HEADERS} PROPERTIES GENERATED TRUE)
   if (H5_PERL_FOUND)