Re: AC_CONFIG_HEADERS & AC_CONFIG_FILES combo

[Peter Breitenlohner]

On Fri, 16 Oct 2009, Sam Steingold wrote:

> I have a header file avcall.h which collects the results of autoconf tests, 
> so it is mentioned in AC_CONFIG_HEADERS.
> I also want it to define the package version cpp macro, so I added
>
> #if !defined(LIBFFCALL_VERSION)
> # define LIBFFCALL_VERSION @PACKAGE_VERSION@
> #endif
>
> to it (there are several such headers, each has these 3 lines).
> however, configure did not substitute @address@hidden
> thus I added avcall.h to AC_CONFIG_FILES.
> nothing changed, no warning or error on configure generation.
> so I added this to configure.in:
>
> AC_CONFIG_HEADERS([avcall.h],
> [sed "s/@PACKAGE_VERSION@/${PACKAGE_VERSION}/" avcall.h > tmp
> mv -f tmp avcall.h])
>
> now @PACKAGE_VERSION@ is removed, nothing is inserted.

That is because the sed command is executed by config.status where
PACKAGE_VERSION not undefined.  You should try

AC_CONFIG_HEADERS([avcall.h],
[sed "s/@PACKAGE_VERSION@/$my_PACKAGE_VERSION/" avcall.h > tmp
mv -f tmp avcall.h],
[my_PACKAGE_VERSION=$PACKAGE_VERSION])

(the changed variable name is to avoid conflicts, may not be needed).

Regards
Peter Breitenlohner <address@hidden>