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package/libkcapi: fix build with BR2_OPTIMIZE_0

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Override CPPFLAGS to fix the following build failure with BR2_OPTIMIZE_0
raised since bump to version 0.14.0 in commit
cd707a9112 and
0e7b2b0300:

/home/autobuild/autobuild/instance-15/output-1/host/i686-buildroot-linux-gnu/sysroot/usr/include/features.h:412:4: error: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Werror=cpp]

configure adds -D_FORTIFY_SOURCE to CPPFLAGS if it is not already
defined. However, we don't want _FORTIFY_SOURCE to be enabled unless
it's enabled by Buildroot (for exactly the above reason). Therefore,
override CPPFLAGS in th build step to remove _FORTIFY_SOURCE again.

It should be noted that upstream already rejected a PR to remove
-Werror: https://github.com/smuellerDD/libkcapi/pull/132

Fixes:
 - http://autobuild.buildroot.org/results/35141ea3046f5a4593e0b27ef92e4ace6bc0be66

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit 83aeec71fd)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Fabrice Fontaine 2022-04-10 12:30:14 +02:00 committed by Peter Korsgaard
parent 542df24db7
commit 91dc2ea40f
1 changed files with 1 additions and 0 deletions
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package/libkcapi/libkcapi.mk
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@ -15,6 +15,7 @@ LIBKCAPI_CONF_ENV = \
ac_cv_path_DB2PDF="" \
ac_cv_path_DB2PS="" \
ac_cv_path_XMLTO=""
LIBKCAPI_MAKE_OPTS = CPPFLAGS="$(TARGET_CPPFLAGS)"
ifeq ($(BR2_PACKAGE_LIBKCAPI_ENCAPP),y)
LIBKCAPI_CONF_OPTS += --enable-kcapi-encapp