setuptools3: pass -j to build step

Explicitly call the build command, as by doing this we get to pass -j.

In packages without any C extensions this is mostly a no-op as
bdist_wheel will call it anyway. However, this does make a big
difference to build time for packages with non-trivial C extensions:

  python3-cython:do_compile     204.8s -> 70.9s
  python3-lxml:do_compile       157.5s -> 92.4s

(From OE-Core rev: 96d13feaa881ae4d275d16f7efca92dbd075241b)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/classes-recipe/setuptools3.bbclass b/meta/classes-recipe/setuptools3.bbclass
index 6f3923dcb2..a54da8b7f5 100644
--- a/meta/classes-recipe/setuptools3.bbclass
+++ b/meta/classes-recipe/setuptools3.bbclass
@@ -38,6 +38,7 @@ setuptools3_do_compile() {
         export STAGING_LIBDIR=${STAGING_LIBDIR}
 
         nativepython3 setup.py --verbose \
+            build ${@oe.utils.parallel_make_argument(d, "-j %d")} \
             bdist_wheel --dist-dir ${PEP517_WHEEL_PATH} \
             ${SETUPTOOLS_BUILD_ARGS}
 }