On Tue, May 25, 2010 at 2:30 PM, Stefano Lattarini <
stefano.lattarini@xxxxxxxxx> wrote:
> At Tuesday 25 May 2010, Alex Farber <alexf.aconf@xxxxxxxxx> wrote:
> > ./configure WX_CPP="compiler flags..." WX_LIBS="linker flags..."
> >
> > This doesn't work, because AC_SUBST is done when configure script
> > is generated, and not when it is executed.
> No, this doesn't work because you are setting the WX_CPP and WX_LIBS
> shell variables unconditionally.
> > Is there some way to get it working?
> I think that setting WX_CPP and WX_LIBS conditionally should be
> enough; e.g., instead of this:
> WX_CPP="`wx-config --cppflags`"
> AC_SUBST(WX_CPP)
> do this:
> test x${WX_CPP+"set"} = x"set" || WX_CPP="`wx-config --cppflags`"
> AC_SUBST(WX_CPP)
>
> By the way, it would also be better to quote arguments of autoconf
> macros consistently, i.e. using `AC_SUBST([WX_CPP])' instead of
> `AC_SUBST(WX_CPP)': but this is ortoghonal to the issue we are
> discussing.
>
> HTH,
> Stefano
>
test x${WX_CPP+"set"} = x"set" || WX_CPP="`wx-config --cppflags`"
AC_SUBST(WX_CPP)
Works as expected. Thanks to Stefano Lattarini for this solution.
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