linux-kernel - [PATCH 22/27] kbuild: generate a list of objects in vmlinux

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Message-Id: <20220424190811.1678416-23-masahiroy@kernel.org>
Date:   Mon, 25 Apr 2022 04:08:06 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: [PATCH 22/27] kbuild: generate a list of objects in vmlinux

A *.mod file lists the member objects of a module, but vmlinux does
not have such a file to list out all the member objects.

Generate this list to allow modpost to know all the member objects.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 scripts/link-vmlinux.sh | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 20f44504a644..d2c193f82004 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -310,7 +310,7 @@ cleanup()
 	rm -f vmlinux
 	rm -f vmlinux.map
 	rm -f vmlinux.o
-	rm -f .vmlinux.d
+	rm -f .vmlinux*
 }
 
 # Use "make V=1" to debug this script
@@ -342,6 +342,19 @@ ${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init need-builtin=1
 modpost_link vmlinux.o
 objtool_link vmlinux.o
 
+# Generate the list of objects in vmlinux
+rm -f .vmlinux.objs
+for f in ${KBUILD_VMLINUX_OBJS} ${KBUILD_VMLINUX_LIBS}; do
+	case ${f} in
+	*.a)
+		${AR} t ${f} >> .vmlinux.objs
+		;;
+	*)
+		echo ${f} >> .vmlinux.objs
+		;;
+	esac
+done
+
 # modpost vmlinux.o to check for section mismatches
 ${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1
 
-- 
2.32.0