Re: using macro ...

[raespi]

Studying a bit more the code, this weird macro gets called like so:

AC_SUBST_INT_HEX(T_FPU, native/task.h)

This line substitutes a variable in a file task_mode.hh.in ( notice the 
.in at the end ):

typedef flag<@T_FPU@> fpu_flag;

And fetches the value of the T_FPU macro ( XNFPU ) in the native/task.h 
file:

#define T_FPU     XNFPU

The resulting file task_mode.hh gets generated like so:

typedef flag<XNFPU> fpu_flag;

Does autoconf support anything like this ?? I've been searching the 
manual but haven't found anything like it ...



El 02/08/2013 11:52 AM, Eric Blake escribió:
> On 02/08/2013 08:32 AM, raespi wrote:
> > Hi ... I've been googlin' around and I stumbled upon a project called
> > XENO for providing a C++ wrapper for Xenomai.   The project's outdated
> > and I'm trying to port it to the newer versions of Xenomai and Autotools
> > ( for the build part ).  I noticed in the configure.ac something like this:
> >
> > AC_SUBST_INT_HEX
> >
> > and in the m4/general.m4 file these two lines:
> >
> > AC_SUBST_INT_HEX(EXPRESSION, HEADER, SYMBOL)
> > AC_SUBST_INT_HEX(EXPRESSION-AND-SYMBOL, HEADER)
> >
> > This macro doesn't show up anywhere on the web.  If you search for it
> > only 2 links pop up.  Are these macros defined by you ?? If so, how can
> > I get them??
> Sorry, but 'git grep AC_SUBST_INT_HEX' in autoconf.git has no hits.
> Whoever wrote them was stupid to collide with the autoconf namespace,
> but they are not official autoconf macros.  I hope you can find the
> original source, and convince the author to rename the macros to
> something that doesn't infringe on autoconf's namespace.