Re: Multiple targets and make -j

[Paul D. Smith]

%% Martin Schröder <address@hidden> writes:

  ms> I'm trying to make the makefiles of teTeX work with make -j.
  ms> Unfortunately they contain rules where one program call generates
  ms> multiple targets, like

  ms> pdftexini.c pdftex0.c pdftex1.c pdftex2.c pdftex3.c pdftexcoerce.h 
pdftexd.h: pdftex.p $(web2c_texmf)
  ms>         $(web2c) pdftex

  ms> Here $(web2c) pdftex has to called only once and not 7 times.

  ms> Any ideas how to achive this?

As long as the relationship between the targets and prerequisite is such
that it can be expressed in terms of a pattern rule, you can do this.
See the GNU make manual, section _Introduction to Pattern Rules_.

For example:

  %ini.c %0.c %1.c %2.c %3.c %coerce.h %d.h: %.p $(web2c_texmf)
        $(web2c) $*

-- 
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 Paul D. Smith <address@hidden>          Find some GNU make tips at:
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