[gentoo-dev] [COMMITTED] kernel-build.eclass: handle CTF if enabled

[Sam James <sam@gentoo.org>]

genpatches will soon be adding optional CTF debug information support
via a patch. If it's enabled, we need to call a few special make targets
to create and install the CTF information. We also need to avoid stripping
the CTF archive.

Signed-off-by: Sam James <sam@gentoo.org>
---
 eclass/kernel-build.eclass | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/eclass/kernel-build.eclass b/eclass/kernel-build.eclass
index 10fd0cca2cc5..1fc86c4a2208 100644
--- a/eclass/kernel-build.eclass
+++ b/eclass/kernel-build.eclass
@@ -296,7 +296,13 @@ kernel-build_src_configure() {
 kernel-build_src_compile() {
 	debug-print-function ${FUNCNAME} "${@}"
 
-	emake O="${WORKDIR}"/build "${MAKEARGS[@]}" all
+	local targets=( all )
+
+	if grep -q "CONFIG_CTF=y" "${WORKDIR}/modprep/.config"; then
+		targets+=( ctf )
+	fi
+
+	emake O="${WORKDIR}"/build "${MAKEARGS[@]}" "${targets[@]}"
 }
 
 # @FUNCTION: kernel-build_src_test
@@ -337,6 +343,10 @@ kernel-build_src_install() {
 		targets+=( dtbs_install )
 	fi
 
+	if grep -q "CONFIG_CTF=y" "${WORKDIR}/modprep/.config"; then
+		targets+=( ctf_install )
+	fi
+
 	# Use the kernel build system to strip, this ensures the modules
 	# are stripped *before* they are signed or compressed.
 	local strip_args
@@ -430,6 +440,7 @@ kernel-build_src_install() {
 			mv "build/vmlinux" "${ED}${kernel_dir}/vmlinux" || die
 		fi
 		dostrip -x "${kernel_dir}/vmlinux"
+		dostrip -x "${kernel_dir}/vmlinux.ctfa"
 	fi
 
 	# strip empty directories
-- 
2.46.0