Merge tag 'kbuild-fixes-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fix from Masahiro Yamada:
"Fix headers_install to not delete pre-existing headers in the install
destination"
* tag 'kbuild-fixes-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: skip install/check of headers right under uapi directories
diff --git a/Makefile b/Makefile
index b400c06..b1ee4a4 100644
--- a/Makefile
+++ b/Makefile
@@ -1172,7 +1172,7 @@
PHONY += headers_check
headers_check: headers_install
$(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
- $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/ $(hdr-dst) HDRCHECK=1
+ $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi $(hdr-dst) HDRCHECK=1
# ---------------------------------------------------------------------------
# Kernel selftest
diff --git a/scripts/Makefile.headersinst b/scripts/Makefile.headersinst
index 6ba97a1..ce753a4 100644
--- a/scripts/Makefile.headersinst
+++ b/scripts/Makefile.headersinst
@@ -8,6 +8,29 @@
#
# ==========================================================================
+PHONY := __headers
+__headers:
+
+include scripts/Kbuild.include
+
+srcdir := $(srctree)/$(obj)
+subdirs := $(patsubst $(srcdir)/%/.,%,$(wildcard $(srcdir)/*/.))
+# caller may set destination dir (when installing to asm/)
+_dst := $(if $(dst),$(dst),$(obj))
+
+# Recursion
+__headers: $(subdirs)
+
+.PHONY: $(subdirs)
+$(subdirs):
+ $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@
+
+# Skip header install/check for include/uapi and arch/$(hdr-arch)/include/uapi.
+# We have only sub-directories there.
+skip-inst := $(if $(filter %/uapi,$(obj)),1)
+
+ifeq ($(skip-inst),)
+
# generated header directory
gen := $(if $(gen),$(gen),$(subst include/,include/generated/,$(obj)))
@@ -15,21 +38,14 @@
kbuild-file := $(srctree)/$(obj)/Kbuild
-include $(kbuild-file)
-# called may set destination dir (when installing to asm/)
-_dst := $(if $(dst),$(dst),$(obj))
-
old-kbuild-file := $(srctree)/$(subst uapi/,,$(obj))/Kbuild
ifneq ($(wildcard $(old-kbuild-file)),)
include $(old-kbuild-file)
endif
-include scripts/Kbuild.include
-
installdir := $(INSTALL_HDR_PATH)/$(subst uapi/,,$(_dst))
-srcdir := $(srctree)/$(obj)
gendir := $(objtree)/$(gen)
-subdirs := $(patsubst $(srcdir)/%/.,%,$(wildcard $(srcdir)/*/.))
header-files := $(notdir $(wildcard $(srcdir)/*.h))
header-files += $(notdir $(wildcard $(srcdir)/*.agh))
header-files := $(filter-out $(no-export-headers), $(header-files))
@@ -88,11 +104,9 @@
$(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \
touch $@
-PHONY += __headersinst __headerscheck
-
ifndef HDRCHECK
# Rules for installing headers
-__headersinst: $(subdirs) $(install-file)
+__headers: $(install-file)
@:
targets += $(install-file)
@@ -104,7 +118,7 @@
$(call if_changed,install)
else
-__headerscheck: $(subdirs) $(check-file)
+__headers: $(check-file)
@:
targets += $(check-file)
@@ -113,11 +127,6 @@
endif
-# Recursion
-.PHONY: $(subdirs)
-$(subdirs):
- $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@
-
targets := $(wildcard $(sort $(targets)))
cmd_files := $(wildcard \
$(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
@@ -126,6 +135,8 @@
include $(cmd_files)
endif
+endif # skip-inst
+
.PHONY: $(PHONY)
PHONY += FORCE
FORCE: ;