scap-security-guide: pass the correct schema file path to openscap-native

There is a build error when using openscap-native sstate cache.
Steps to reproduce:
Create a new build project in build-1 directory.
$ bitbake openscap-native
Then remove the whole build directory only keep the sstate-cache
directory as a sstate mirror.

Create another new build project in build-2 directory.
Set SSTATE_MIRRORS
$ bitbake scap-security-guide

Error message:
OpenSCAP Error: Schema file 'xccdf/1.1/xccdf-schema.xsd' not found in path
'/buildarea/build-1/tmp/work-shared/openscap/oscap-build-artifacts/usr/share/openscap/schemas' when trying to validate
'/buildarea/build-2/tmp/work/core2-64-poky-linux/scap-security-guide/0.1.44+gitAUTOINC+5fdfdcb2e9-r0/git/build/jre/xccdf-unlinked-resolved.xml'
[/buildarea/build-1/tmp/work/x86_64-linux/openscap-native/1.3.1+gitAUTOINC+4bbdb46ff6-r0/git/src/source/validate.c:104]

The oscap command from openscap-native tries to find the schema files in
build-1 directory since these paths are hardcoded when building
openscap-native.

We need to pass the correct schema/xslt/cpe paths to oscap to make sure
it can find the files in right location.

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/meta-security-compliance/recipes-openscap/scap-security-guide/scap-security-guide.inc b/meta-security-compliance/recipes-openscap/scap-security-guide/scap-security-guide.inc
index 3212310..66c2623 100644
--- a/meta-security-compliance/recipes-openscap/scap-security-guide/scap-security-guide.inc
+++ b/meta-security-compliance/recipes-openscap/scap-security-guide/scap-security-guide.inc
@@ -13,6 +13,9 @@ S = "${WORKDIR}/git"
 inherit cmake pkgconfig python3native
 
 STAGING_OSCAP_BUILDDIR = "${TMPDIR}/work-shared/openscap/oscap-build-artifacts"
+export OSCAP_CPE_PATH="${STAGING_OSCAP_BUILDDIR}${datadir_native}/openscap/cpe"
+export OSCAP_SCHEMA_PATH="${STAGING_OSCAP_BUILDDIR}${datadir_native}/openscap/schemas"
+export OSCAP_XSLT_PATH="${STAGING_OSCAP_BUILDDIR}${datadir_native}/openscap/xsl"
 
 OECMAKE_GENERATOR = "Unix Makefiles"