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Ralsina.Me — Roberto Alsina's website

CMake is nice. Or not?

I am play­ing with CMake. Specif­i­cal­ly, I am try­ing to re­place the sim­plis­tic hand­made ­Make­files for my RA-­Plu­g­ins projec­t.

The parts about de­tect­ing li­braries and con­di­tion­al­ly com­pil­ing plug­ins based on what you have were sur­pris­ing­ly easy!

Un­til I ran in­to ... man pages.

Here is a Make­file that would build all the man­pages for the plu­g­in­s:

MANPAGES=plugins-ra.8 authchecks.8 rcptchecks.8
man: \$(MANPAGES)
%.8: %.man.txt
      txt2man -t \${basename $< .man.txt} < $< > $@

As you can see... triv­ial. All I need to do in or­der to add a man page is add what­ev­er.8 to the list, and it will be cre­at­ed from what­ev­er.­man.tx­t.

But... how does one do that us­ing CMake?

I start­ed think­ing of us­ing a FILE (GLOB *.­man.tx­t) and then a FORE­ACH over that, and then... then what? Re­al­ly, I am stumped. I am a new­bie, though, and get­ting the big, dif­fi­cult stuff done is enough to switch. I should gen­er­ate these be­fore dis­tri­bu­tion any­way.

So, I wrote a wee Make­file.­man­pages and added this for CMAKE:

ADD_CUSTOM_TARGET ( manpages make -f Makefile.manpages )

But I am cu­ri­ous about find­ing the cmakeish way.

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