[PATCH V4] distutils-base.bbclass: Do not use -pie with hardening

[Khem Raj <raj.khem@gmail.com>]

Fix build when PIE is turned on. It tries to build
.so file using -pie and -shared flags together because
its doing compile and link in same step CFLAGS and LDFLAGS
are combined and does not work, ending in errors e.g.

| /mnt/a/oe/build/tmp/work/cortexa7t2hf-neon-vfpv4-bec-linux-musleabi/python-pygpgme/0.3-r0/recipe-sysroot/usr/l
ib/Scrt1.o: In function `_start_c':
| /usr/src/debug/musl/1.1.16+gitAUTOINC+179766aa2e-r0/git/crt/crt1.c:17: undefined reference to `main'
| collect2: error: ld returned 1 exit status

This error while cryptic is due to the fact that we are
building a shared library but also pass -pie flag to the link
step after specify LDHSARED ( which is -shared linker flags )

we can not use -pie when doing shared libs. This is true for all the python
modules inheriting setup tools

Disable the pie flags thusly for all modules using setuptools since
this setting is done in setuptools makefiles which are then used
during module compiles

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
v1 -> v2
- Move change to distutils-base
V2 -> v3
- Fix a missing end quote
v3 -> v4
- Move the chage to distutils-common-base to cover python3 as well

 meta/classes/distutils-common-base.bbclass | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/meta/classes/distutils-common-base.bbclass b/meta/classes/distutils-common-base.bbclass
index 824a1b68b1..fa733c672c 100644
--- a/meta/classes/distutils-common-base.bbclass
+++ b/meta/classes/distutils-common-base.bbclass
@@ -11,3 +11,5 @@ FILES_${PN}-dev += "\
   ${libdir}/pkgconfig \
   ${PYTHON_SITEPACKAGES_DIR}/*.la \
 "
+
+SECURITY_CFLAGS = "${SECURITY_NO_PIE_CFLAGS}"
-- 
2.13.0