libcap-ng: add pthread library if header is found

If the pthread.h header is found, make sure library containing
"pthread_atfork" is added to the list of libraries against which to
link. On some hosts (e.g. openSUSE 15.1) "-lpthread" needs to be
explicitly added in order for the code to compile correctly.

We already had a workaround for this for native builds, but using some
external toolchains, we can be bit by this for the target recipe as
well.

Most of this is courtesy Trevor Woerner <twoerner@gmail.com>, via his
patch at stevegrubb/libcap-ng#10, the last thanks to Khem Raj.

(From OE-Core rev: 8d84fdea1c26ed5f8f8261c89070df44da3f1855)

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/meta/recipes-support/libcap-ng/libcap-ng.inc b/meta/recipes-support/libcap-ng/libcap-ng.inc
index aec83896e4..002915ad48 100644
--- a/meta/recipes-support/libcap-ng/libcap-ng.inc
+++ b/meta/recipes-support/libcap-ng/libcap-ng.inc
@@ -9,6 +9,8 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=94d55d512a9ba36caa9b7df079bae19f \
 
 SRC_URI = "http://people.redhat.com/sgrubb/libcap-ng/libcap-ng-${PV}.tar.gz \
            file://python.patch \
+           file://0001-configure.ac-add-library-if-header-found.patch \
+           file://0002-Wrap-pthread_atfork-usage-in-HAVE_PTHREAD_H.patch \
 "
 
 SRC_URI[md5sum] = "57dc267e2949cdecb651a929f9206572"