Re: Need Code to Run Before Targets Are Processed?

[Ineiev]

Hello, Bobby

On 8/1/08, Bobby Dill <address@hidden> wrote:
>  # This code must be run before anything is compiled
>  forms="mainform \
>         colorname \
>         findform \
>         optionsform"
>
>         uicode := $(foreach i, $(forms), $(i).ui.h)
>         mocced := $(foreach i, $(forms), moc_$(i).cpp)
>         uicgen := $(foreach i, $(forms), $(i).h $(i).cpp)
>
>         %foreach i in $(forms)
>         $(i).h: $(i).ui
>         $(i).cpp: $(i).ui $(i).h
>         %end
>  # End section

When I needed something like this, I wrote an m4 template for Makefile.am
(file named Makefile.am.m4). it looked like this:

 define(MYPROJECT_FORM,
`
##expanded form "$1" begins
uicode+= $1.h
mocced+= $1.cpp
uicgen+= $1.h $1.cpp
$1.h: $1.ui
$1.cpp: $1.ui $1.h
##expanded form "$1" ends
')

MYPROJECT_FORM(`mainform')
MYPROJECT_FORM(`colorname')
#and so on for every form

#to initially generate Makefile.am, issue this command manually:
Makefile.am: Makefile.am.m4
        m4 $(srcdir)/Makefile.am.m4 > $(srcdir)/Makefile.am

I don't know if there is a better solution.

>  # Create an image collection from all the images in the images directory
>  images.cpp: $(wildcard images/*)
>         uic -embed colortool $^ -o $@

Automake does not support wildcards (I believe this means that such
code may break some make targets like distcheck). They argue this
issue in Automake info, section FAQ->wildcards. The summary of their
considerations is that you should know your sources to keep them neat
and that it is technically hard to provide this feature portably.

Regards,
   Ineiev
-- 
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