Delegate Variable to sub-target

[Anja Schaefer]

Hi,

I'm new to gnu make and want to use it to compile my LaTeX file(s). Basically, 
I have a complex LaTeX file "book.tex", which includes several chapters. The 
chapters in turn include several files as well. My goal is to have a makefile 
that lets me either compile the full book or single chapters as separate essays.

The procedure for compiling the LaTeX is always the same, only the files 
change. This is a simlified version of my Makefile:

--
.PHONY: full firstchapter secondchapter

fullfilename = book.tex
firstchapter = chap1.tex

full:
  @pdflatex ${fullfilename}
  @bibtex ${fullfilename}.bib
  @pdflatex ${fullfilename}
  @pdflatex ${fullfilename}

firstchapter:
  @pdflatex ${firstchapter}
  @bibtex ${firstchapter}.bib
  @pdflatex ${firstchapter}
  @pdflatex ${firstchapter}

all:

--

I think, the correct make-way would be to call the commands in the "all" target 
and just re-assign the variables in the other targets, right?

Could somebody please help me with this?

Best,

Anja
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