Re: [Boost-build] Passing defines to b2 ?

From: Ken Moffat (zarniwhoop73_at_[hidden])
Date: 2019-05-31 17:50:31

On Fri, 31 May 2019 at 10:48, Mateusz Loskot via Boost-build
<boost-build_at_[hidden]> wrote:
>
> On Fri, 31 May 2019 at 11:44, Ken Moffat via Boost-build
> <boost-build_at_[hidden]> wrote:
> >
> > Now I'm looking at the first of the cheap hardening options (on gcc) :
> > -D_FORTIFY_SOURCE=2 but b2 has a strong dislike of  -D.
>
> b2 app optimization=full define=USE_ASM
>
> see that example (and explanation) in this section
> https://boostorg.github.io/build/manual/develop/index.html#bbv2.tutorial.libs
>
> Best regards,
>
Thanks. For building boost itself, a quick partial build with a bit more
than the things I'm currently testing:

./b2 stage cxxflags="-march=native -fstack-protector-strong" \
define=_FORTIFY_SOURCE=2  define=_GLIBCXX_ASSERTIONS threading=multi \
link=shared -d+2

showed the process works (all get added to the existing -O3). I've
spelled that out in the hope google can find it - unfortunately most
of my searching for b2 boost fortify came up with stuff about
vitamins. And I've made a note of where the manual is.