Re: Automatically keeping "last modified" up to date

[Allin C. <cot...@wf...>]

On Tue, 6 Aug 2013, Daniel J Sebald wrote:

> On 08/06/2013 02:37 PM, Ethan A Merritt wrote:
>> On Tuesday, August 06, 2013 12:25:08 pm Daniel J Sebald wrote:
> [snip]
>>> Well, I see the file Makefile.maint, but I'm not sure what I'm looking
>>> at.  I see some THIS_VERSION, PREV_VERSION , etc. but I don't know how
>>> that ties into what I see in the source code.  In show.c is the line:
>>>
>>>       fprintf(fp, fmt,
>>> 	    p,			/* empty line */
>>> 	    p, PROGRAM,
>>> 	    p, gnuplot_version, gnuplot_patchlevel, gnuplot_date,
>>>
>>> in which gnuplot_date is the "last modified" date.  And that variable
>>> comes from version.c, i.e.,
>>>
>>> const char gnuplot_date[] = "2012-06-19 ";
>>>
>>> but I can't find anything in a make file that indicates gnuplot_date[]
>>> is automatically generated.  One has to manually change that, correct?
>>
>> No.
>> It is automatically updated during "make".
>> I've never had any problem with this, so I don't know what might be going
>> wrong on your machine.
>>
>> Here's what I see:
>>
>> chauvet [92] make version.o
>> Making version.c
>> sed -e '/^const char gnuplot_date/ s/"[^"]*"/"2013-07-25 "/' \
>>              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 -I/usr/local/include   -pthread -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include   -pthread -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/l
> ib/glib-2.0/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
>>
>
> I'm not seeing that:
>
> [gnuplot]# make version.o
> make: *** No rule to make target `version.o'.  Stop.

You'll get that in the top-level gnuplot directory. But the 
overall "make" moves into the src subdirectory, where there 
are rules for both version.o and version.c.

Allin Cottrell