[Boost-users] jam environment variables

Subject: [Boost-users] jam environment variables
From: Mika Heiskanen (mika.heiskanen_at_[hidden])
Date: 2008-09-13 11:51:14

Hello,

Jam documentation mentions that "Jam picks up variable settings from your 
environment by default". However, I could not find any documentation on what 
environment variables affect what options. In particular, I am looking for a 
way to pass on to Jam the --layout and --build-type options via environment 
variables. Currently I am building a boost rpm for local distribution by using 
the following command sequence in the rpm .spec file:

   %build
   ./configure --prefix=%{_prefix} --libdir=%{_libdir}
   cat Makefile | sed -e 's/BJAM_CONFIG=/BJAM_CONFIG=--layout=system 
--build-type=complete/' > Makefile.new
   mv Makefile.new Makefile
   make all

If I understand correctly, I should be able to define the compile options via 
environment variables instead of resorting to a hack like above.

I'd appreciate any pointers to more detailed documentation on how to 
accomplish the above with environment variables alone.

Thank you in advance,

--> Mika Heiskanen / FMI