Re: Automatically keeping "last modified" up to date

[Daniel J S. <dan...@ie...>]

On 08/06/2013 02:56 PM, Daniel J Sebald wrote:
[snip]
> I'm not seeing that:
>
> [gnuplot]# make version.o
> make: *** No rule to make target `version.o'.  Stop.
>
> [gnuplot]# make -v
> GNU Make 3.82
> Built for x86_64-redhat-linux-gnu
> Copyright (C) 2010  Free Software Foundation, Inc.
>
> When the build process is carried out, it must be using the version.c
> that exists in the repository instead of an updated version.c.  Now that
> I know what it is supposed to look like, I can investigate.

I was looking at the Makefile.maint in the root directory.  I see there 
is another in the src/ directory as well.

I downloaded a fresh CVS source tree and check date on version.c:

[gnuplot]# ls -l src/version.c
-rw-r--r--. 1 root root 2151 Feb 26 17:38 src/version.c

I ran "prepare" and "configure".

[gnuplot]# ls -l src/version.c
-rw-r--r--. 1 root root 2151 Feb 26 17:38 src/version.c

Change to the src directory:

[root@moorglade src]# make version.o
Making version.c
sed -e '/^const char gnuplot_date/ s/"[^"]*"/"2013-08-06 "/' \
     version.c > version.ct;
mv version.ct version.c
gcc -DHAVE_CONFIG_H -I. -I..  -I../term -I../term 
-DBINDIR=\"/usr/local/bin\" 
-DX11_DRIVER_DIR=\"/usr/local/libexec/gnuplot/4.7\" 
-DQT_DRIVER_DIR=\"/usr/local/libexec/gnuplot/4.7\" 
-DGNUPLOT_SHARE_DIR=\"/usr/local/share/gnuplot/4.7\" 
-DGNUPLOT_PS_DIR=\"/usr/local/share/gnuplot/4.7/PostScript\" 
-DGNUPLOT_JS_DIR=\"/usr/local/share/gnuplot/4.7/js\" 
-DGNUPLOT_LUA_DIR=\"/usr/local/share/gnuplot/4.7/lua\" 
-DCONTACT=\"gnu...@li...\" 
-DHELPFILE=\"/usr/local/share/gnuplot/4.7/gnuplot.gih\" 
-DGNUPLOT_X11=\"`echo gnuplot_x11 | sed 's,x,x,'`\" 
-DXAPPLRESDIR=\"/etc/X11/app-defaults/\"  -I/usr/local/include  -g -O2 
-MT version.o -MD -MP -MF .deps/version.Tpo -c -o version.o version.c
mv -f .deps/version.Tpo .deps/version.Po

OK, that looks right now.

So I think I see what the issue is--when I built gnuplot from outside 
the source tree, e.g.,

mkdir ../build1
cd ../build1
../gnuplot/configure
make

that sed script is not occurring (I checked the log).  Probably because 
version.c no longer appears in the src/ directory of the build root.

Dan