Re: [Boost-build] How to implement extra --prefix installation if designated by command line

Subject: Re: [Boost-build] How to implement extra --prefix installation if designated by command line
From: Moritz Hassert (mhassert_at_[hidden])
Date: 2011-06-08 05:57:23

Hi Dmitry,

you could do something like this (untested code written in mail-client!):

local prefix-dir = [ MATCH "^--prefix=(.*)" : [ modules.peek : ARGV ] ] ;
if $(prefix-dir)
{
   path-constant PREFIX_DIR : $(prefix-dir) ;

   install unicomm_prefix_install
      : ### sources
        unicomm
      : ### requirements
        <location>$(PREFIX_DIR)/lib
        <install-type>LIB
      ;
}
else
{
  alias unicomm_prefix_install ;
}

alias unicomm_install : unicomm_native_install  unicomm_prefix_install ;

[...]

This makes "unicomm_prefix_install" a no-op when no "--prefix" ist given.

Greetings
Moritz

Am Montag, 6. Juni 2011, um 21:22:29 schrieb Dmitry Timoshenko:
> Hello,
> 
> There is a library, it's always installed into predefined subfolder, I
> setup this within bjam script.
> It's also wanted to have extra installation but only if --prefix=xx
> parameter is specified.
> 
> I realize how to get the parameter, something like this may be:
> 
> #-------------------------------------------------------------------------
> local prefix-dir = [ MATCH "^--prefix=(.*)" : [ modules.peek : ARGV ] ] ;
> if $(prefix-dir)
> {
>    path-constant PREFIX_DIR : $(prefix-dir) ;
> }
> 
> then I would like to declare something like this:
> 
> alias unicomm_install : unicomm_native_install  [HERE wanted to place
> unicomm_prefix_install if $(PREFIX_DIR) != 0 else NOTHING ] ;
> 
> Where unicomm_native_install - is predefined installation,
> install unicomm_native_install
> 
>    : ### sources
> 
>      unicomm
> 
>    : ### requirements
> 
> <location>$(UNICOMM_ROOT)/lib
> <install-type>LIB
>    ;
> 
> and  unicomm_prefix_install looks like
> 
>      install unicomm_prefix_install
> 
>        : ### sources
> 
>          unicomm
> 
>        : ### requirements
> 
> <location>$(PREFIX_DIR)/lib
> <install-type>LIB
>        ;
> 
> How to achieve the goal correcly? It seems I'm wrong with my guess.
> 
> It's also interested to know how can I also copy header files?
> 
> Thank you.
> 
> 
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