Re: Faster install-sh in C

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От Bruce Momjian
Тема Re: Faster install-sh in C
Дата
Msg-id 200506050042.j550gTQ02030@candle.pha.pa.us
обсуждение исходный текст
Ответ на Faster install-sh in C  (Alvaro Herrera <alvherre@dcc.uchile.cl>)
Ответы Re: Faster install-sh in C  (Alvaro Herrera <alvherre@dcc.uchile.cl>)
Список pgsql-patches
I am using 'cp' in current CVS for this.  I assume it is as fast as the
C implementation, but if not, please let me know.

---------------------------------------------------------------------------

Alvaro Herrera wrote:
> Patchers,
>
> I wrote an "install" program in C.  It's supposed to replace the
> config/install-sh script, limited to the functionality we need, i.e.
> what is in Makefiles in the Pg main source tree.  The main objective of
> this exercise is to reduce "make install" execution time; a part of that
> is being able to install multiple files with one command.
>
> Portability testing right now is limited to my machine, which is Linux
> with glibc 2.3.2 (Debian Sid).
>
> With this in place, "make install" in src/include takes 17 seconds on
> this machine, where the script version takes more than a minute.  I
> think this is a useful improvement.
>
>
> Right now I'm missing a Makefile rule for it.  It needs the pg_progname
> symbol from src/port, and the includes from $(srcdir)/src/include and
> $(builddir)/src/include.  From the config directory, this works:
>
> $(CC) $(CFLAGS) -I$(top_srcdir)/src/include -I$(top_builddir)/src/include ../src/port/path.o ../src/port/exec.o $< -o
$@
>
> Also, I don't know how to force it to build before executing "install",
> short of putting it as a dependency in every makefile (which sounds
> silly to me).
>
> I attach the source code, and a src/include/Makefile modification to
> use the multi-file install feature.
>
> --
> Alvaro Herrera (<alvherre[a]dcc.uchile.cl>)
> "Hay quien adquiere la mala costumbre de ser infeliz" (M. A. Evans)

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