[PATCH 5/7] kbuild: hide CONFIG_TRIM_UNUSED_KSYMS code from external module building

From: Masahiro Yamada
Date: Wed Mar 14 2018 - 12:46:30 EST


If CONFIG_TRIM_UNUSED_KYMS is enabled, KBUILD_MODULES is set. This
code is unneeded for external module building because KBUILD_MODULES
is always set. Move this code inside "ifeq ($(KBUILD_EXTMOD),)"
conditional.

Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---

Makefile | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/Makefile b/Makefile
index decc870..e60b16f 100644
--- a/Makefile
+++ b/Makefile
@@ -603,13 +603,6 @@ else
include/config/auto.conf: ;
endif # $(dot-config)

-# For the kernel to actually contain only the needed exported symbols,
-# we have to build modules as well to determine what those symbols are.
-# (this can be evaluated only once include/config/auto.conf has been included)
-ifdef CONFIG_TRIM_UNUSED_KSYMS
- KBUILD_MODULES := 1
-endif
-
# The all: target is the default when no target is given on the
# command line.
# This allow a user to issue only 'make' to build a kernel including modules
@@ -1010,6 +1003,13 @@ ifdef CONFIG_TRIM_UNUSED_KSYMS
"$(MAKE) -f $(srctree)/Makefile vmlinux"
endif

+# For the kernel to actually contain only the needed exported symbols,
+# we have to build modules as well to determine what those symbols are.
+# (this can be evaluated only once include/config/auto.conf has been included)
+ifdef CONFIG_TRIM_UNUSED_KSYMS
+ KBUILD_MODULES := 1
+endif
+
autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h)

$(autoksyms_h):
--
2.7.4