Multi-file install for PROGRAMS.

[Ralf Wildenhues]

This turned out to be more ugly and longer than I had hoped for.
Esp. the fact that it uses awk even without nobase_ is a bit
overkill.  Oh well.

Similarly to the man pages stuff, it can deal part of the programs
at once if $(transform) does not mangle all of them, as for example
in 's/ginstall/install/'.

With programs, there are no line length issues as they cannot appear
in the source tree.  Appending $(EXEEXT) is already done by automake,
so the additional length encountered there is an issue the package
author has to deal with anyway.

The rule would benefit from a fast libtool install mode.
(I guess that's what I'm looking at next after the next
Automake release.)

Cheers,
Ralf

2008-09-07  Ralf Wildenhues  <address@hidden>

        Multi-file install for PROGRAMS.
        * lib/am/progs.am (install-%DIR%PROGRAMS): Allow to install
        several programs with one install invocation, when not using
        libtool; employs some trickery to cater for nobase_, $(EXEEXT),
        create needed directories, libtool, while only forking a
        constant number of times in the fast path; uses awk and sed also
        in the default path.
        (%DIR%PROGRAMS_INSTALL) [!BASE]: No need to use install-sh any
        more.

diff --git a/lib/am/progs.am b/lib/am/progs.am
index 24fd10f..2a7778c 100644
--- a/lib/am/progs.am
+++ b/lib/am/progs.am
@@ -21,37 +21,61 @@
 
 if %?INSTALL%
 am__installdirs += "$(DESTDIR)$(%NDIR%dir)"
-%DIR%PROGRAMS_INSTALL = %BASE?$(INSTALL_PROGRAM):$(install_sh_PROGRAM)%
+%DIR%PROGRAMS_INSTALL = $(INSTALL_PROGRAM)
 .PHONY install-%EXEC?exec:data%-am: install-%DIR%PROGRAMS
 install-%DIR%PROGRAMS: $(%DIR%_PROGRAMS)
        @$(NORMAL_INSTALL)
        test -z "$(%NDIR%dir)" || $(MKDIR_P) "$(DESTDIR)$(%NDIR%dir)"
 ## Funny invocation because Makefile variable can be empty, leading to
 ## a syntax error in sh.
-       @list='$(%DIR%_PROGRAMS)'; for p in $$list; do \
+       @list='$(%DIR%_PROGRAMS)'; \
+       for p in $$list; do echo "$$p $$p"; done | \
 ## On Cygwin with libtool test won't see `foo.exe' but instead `foo'.
 ## So we check for both.
-         p1=`echo $$p|sed 's/$(EXEEXT)$$//'`; \
+       sed 's/$(EXEEXT)$$//' | \
+       while read p p1; do \
          if test -f $$p \
 ?LIBTOOL?           || test -f $$p1 \
-         ; then \
-## Compute basename of source file.  Unless this is a nobase_ target, we
-## want to install 'python/foo.py' as '$(DESTDIR)$(%NDIR%dir)/foo.yo',
-## not '$(DESTDIR)$(%NDIR%dir)/python/foo.yo'.
-## However in all cases $(transform) applies only to the basename,
-## so we have to strip the directory part.
-           f=`echo "$$p1" | sed 's,^.*/,,;$(transform);s/$$/$(EXEEXT)/'`; \
-## Prepend the directory part if nobase_ is used.
-?!BASE?            f=`echo "$$p1" | sed 's|[^/]*$$||'`"$$f"; \
+         ; then echo "$$p"; echo "$$p"; else :; fi; \
+       done | \
+## We now have a list of sourcefile pairs, separated by newline.
+## Turn that into "sourcefile source_base target_dir xformed_target_base",
+## with newlines being turned into spaces in a second step.
+       sed -e 'p;s,.*/,,;n;h' \
+?BASE?     -e 's|.*|.|' \
+?!BASE?            -e 's|[^/]*$$||; s|^$$|.|' \
+           -e 'p;x;s,.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/' | \
+       sed 'N;N;N;s,\n, ,g' | \
 ## Note that we explicitly set the libtool mode.  This avoids any
 ## lossage if the install program doesn't have a name that libtool
 ## expects.
-?LIBTOOL?         echo " $(INSTALL_PROGRAM_ENV) $(LIBTOOL) $(AM_LIBTOOLFLAGS) 
$(LIBTOOLFLAGS) --mode=install $(%DIR%PROGRAMS_INSTALL) '$$p' 
'$(DESTDIR)$(%NDIR%dir)/$$f'"; \
-?LIBTOOL?         $(INSTALL_PROGRAM_ENV) $(LIBTOOL) $(AM_LIBTOOLFLAGS) 
$(LIBTOOLFLAGS) --mode=install $(%DIR%PROGRAMS_INSTALL) "$$p" 
"$(DESTDIR)$(%NDIR%dir)/$$f" || exit $$?; \
-?!LIBTOOL?        echo " $(INSTALL_PROGRAM_ENV) $(%DIR%PROGRAMS_INSTALL) '$$p' 
'$(DESTDIR)$(%NDIR%dir)/$$f'"; \
-?!LIBTOOL?        $(INSTALL_PROGRAM_ENV) $(%DIR%PROGRAMS_INSTALL) "$$p" 
"$(DESTDIR)$(%NDIR%dir)/$$f" || exit $$?; \
-         else :; fi; \
-       done
+?LIBTOOL?      while read p pbase dir f; do \
+?LIBTOOL??!BASE?         if test "$$dir" != .; then f=$$dir/$$f; \
+?LIBTOOL??!BASE?           echo " $(MKDIR_P) '$(DESTDIR)$(%NDIR%dir)/$$dir'"; \
+?LIBTOOL??!BASE?           $(MKDIR_P) "$(DESTDIR)$(%NDIR%dir)/$$dir" || exit 
$$?; \
+?LIBTOOL??!BASE?         else :; fi; \
+?LIBTOOL?        echo " $(INSTALL_PROGRAM_ENV) $(LIBTOOL) $(AM_LIBTOOLFLAGS) 
$(LIBTOOLFLAGS) --mode=install $(%DIR%PROGRAMS_INSTALL) '$$p' 
'$(DESTDIR)$(%NDIR%dir)/$$f'"; \
+?LIBTOOL?        $(INSTALL_PROGRAM_ENV) $(LIBTOOL) $(AM_LIBTOOLFLAGS) 
$(LIBTOOLFLAGS) --mode=install $(%DIR%PROGRAMS_INSTALL) "$$p" 
"$(DESTDIR)$(%NDIR%dir)/$$f" || exit $$?; \
+?LIBTOOL?      done
+## The following awk script turns that into one line containing directories
+## and then lines of `target_name_or_directory sources...'.
+?!LIBTOOL?     $(AWK) 'BEGIN { files["."] = ""; dirs["."] = "" } { \
+?!LIBTOOL?       if ($$2 == $$4) tgt = $$3; else tgt = $$3 "/" $$4; \
+?!LIBTOOL?       files[tgt] = files[tgt] " " $$1; dirs[$$3] = 1 } \
+?!LIBTOOL?       END { d=""; for (dir in dirs) d = d " " dir; print d; \
+?!LIBTOOL?             for (dir in files) print dir, files[dir] }' | { \
+?!LIBTOOL?     read dirs; \
+?!LIBTOOL??!BASE?      for dir in $$dirs; do test . = $$dir || { \
+?!LIBTOOL??!BASE?        echo " $(MKDIR_P) '$(DESTDIR)$(%NDIR%dir)/$$dir'"; \
+?!LIBTOOL??!BASE?        $(MKDIR_P) "$(DESTDIR)$(%NDIR%dir)/$$dir" || exit 
$$?; \
+?!LIBTOOL??!BASE?      }; done; \
+?!LIBTOOL?     while read dir files; do \
+?!LIBTOOL?       if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+?!LIBTOOL?       test -z "$$files" || { \
+?!LIBTOOL?         echo " $(INSTALL_PROGRAM_ENV) $(%DIR%PROGRAMS_INSTALL) 
$$files '$(DESTDIR)$(%NDIR%dir)$$dir'"; \
+?!LIBTOOL?         $(INSTALL_PROGRAM_ENV) $(%DIR%PROGRAMS_INSTALL) $$files 
"$(DESTDIR)$(%NDIR%dir)$$dir" || exit $$?; \
+?!LIBTOOL?       }; \
+?!LIBTOOL?     done; }
 endif %?INSTALL%