bin/53905: install(1) is unnecessarily difficult to use

[coypu%sdf.org@localhost]

>Number:         53905
>Category:       bin
>Synopsis:       install(1) is unnecessarily difficult to use
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jan 24 16:05:00 +0000 2019
>Originator:     coypu
>Release:        NetBSD 8.99.31
>Organization:
>Environment:
NetBSD planets 8.99.31 NetBSD 8.99.31 (GENERIC) #0: Thu Jan 24 20:41:48 IST 2019  fly@planets:/current/obj/sys/arch/amd64/compile/GENERIC amd64
>Description:
GDC effectively installs its runtime library source code to the machine:

ALL_DRUNTIME_INSTALL_DSOURCES = core/atomic.d core/attribute.d  #... a list of 600+ files in 64 directories


install-data-local:
        for file in $(ALL_DRUNTIME_INSTALL_DSOURCES); do \
            $(INSTALL_HEADER) -D $(srcdir)/$$file \
              $(DESTDIR)$(gdc_include_dir)/$$file ; \
        done



This can't work with NetBSD install(1) because there is no stanza for creating
the directories used for these files.

I don't see why install(1) should require separate code for the creation of
directories.

This works fine in GNU install because:

       -D     create all leading components of DEST except the last, or all
              components of --target-directory, then copy SOURCE to DEST

It appears that the rest of the world manages to hold up by having
automake mask these differences.
>How-To-Repeat:

>Fix: