[libvirt] [PATCH] build: Fix build with old automake

[Eric Blake]

On 03/14/2014 04:43 AM, Jiri Denemark wrote:
> Ancient automake (such as from RHEL5) does not provide abs_srcdir and
> abs_builddir variables which are used by a recent commit of mine
> (e562e82).
> 
> Signed-off-by: Jiri Denemark <jdenemar at redhat.com>
> ---
>  src/Makefile.am | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/src/Makefile.am b/src/Makefile.am
> index d4d7b2b..fce9056 100644
> --- a/src/Makefile.am
> +++ b/src/Makefile.am
> @@ -16,6 +16,10 @@
>  ## License along with this library.  If not, see
>  ## <http://www.gnu.org/licenses/>.
>  
> +# old automake does not provide abs_{src,build}dir variables
> +abs_builddir = $(shell pwd)
> +abs_srcdir = $(shell cd $(srcdir) && pwd)

Luckily we require GNU make, so this works.  It would be nice, however,
if src/Makefile.am and tests/Makefile.am shared the same formulas; right
now, tests/Makefile.am uses the more portable (but slower):

AM_CFLAGS = ...
        -Dabs_builddir="\"`pwd`\"" \
        -Dabs_srcdir="\"`cd '$(srcdir)'; pwd`\"" \


-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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