boost: Use PARALLEL_MAKE for bjam

Like make, bjam accepts the parameter -jX for multithreaded execution
do_install also profits from this setting
Tested with a quad core 64bit intel cpu (with hyperthreading) PARALLEL_MAKE="j16"

$ time bitbake boost

before:
real    14m37.433s
user    7m40.785s
sys     4m30.109s

after:
real    7m11.979s
user    12m10.694s
sys     2m47.078s

Also fixes tab indention

(From OE-Core rev: 9b9cfc1dfe5e3b8f89b7a8508537166d0f23935e)

Signed-off-by: Samuel Stirtzel <s.stirtzel@googlemail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 3 deletions

diff --git a/meta/recipes-support/boost/boost.inc b/meta/recipes-support/boost/boost.inc
index 830fcb0568..4fe5a354de 100644
--- a/meta/recipes-support/boost/boost.inc
+++ b/meta/recipes-support/boost/boost.inc
@@ -120,10 +120,12 @@ BJAM_TOOLS   = "-sTOOLS=gcc \
                 '--layout=system' \
                 "
 
-BJAM_OPTS    = '${BJAM_TOOLS} \
-                -sBOOST_BUILD_USER_CONFIG=${S}/tools/build/v2/user-config.jam \
+#use PARALLEL_MAKE to speed up the build
+BJAM_OPTS    = '${PARALLEL_MAKE} \
+                ${BJAM_TOOLS} \
+                -sBOOST_BUILD_USER_CONFIG=${S}/tools/build/v2/user-config.jam \
                 --builddir=${S}/${TARGET_SYS} \
-                --disable-icu \
+                --disable-icu \
                 ${BJAM_EXTRA}'