makepkg: Don't double-layer distcc on ccache

buildenv is set once for build() and a second time for package(). When
using both distcc and ccache, this lead to CCACHE_PREFIX="distcc distcc"
in package(), which breaks PKGBUILDs that execute the compiler in
package() because distcc complains:

    distcc[383041] (main) CRITICAL! distcc seems to have invoked itself
    recursively!

Avoid causing this error by only adding "distcc" to CCACHE_PREFIX if
it's not yet there.

Signed-off-by: Matti Niemenmaa <matti.niemenmaa+git@iki.fi>
Signed-off-by: Allan McRae <allan@archlinux.org>

0 files changed, 0 insertions, 0 deletions