kbuild: exploit parallel building for CONFIG_HEADERS_CHECK
When CONFIG_HEADERS_CHECK is enabled, the headers_check is executed
as a serialized task in the vmlinux recipe.
Make it independent of vmlinux so that parallel building can process
the headers_check and other build targets simultaneously.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/Makefile b/Makefile
index d4ac3cb..00630cf 100644
--- a/Makefile
+++ b/Makefile
@@ -1035,9 +1035,6 @@
$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
-ifdef CONFIG_HEADERS_CHECK
- $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
-endif
ifdef CONFIG_GDB_SCRIPTS
$(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py)
endif
@@ -1208,6 +1205,10 @@
$(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1
$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst) HDRCHECK=1
+ifdef CONFIG_HEADERS_CHECK
+all: headers_check
+endif
+
# ---------------------------------------------------------------------------
# Kernel selftest