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kbuild: skip 'addtree' and 'flags' magic for external module build

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When building an external module, $(obj) is the absolute path to it.

The header search paths from ccflags-y etc. should not be tweaked.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2019-01-16 11:56:40 +09:00
parent f17b5f06cb
commit 58156ba446
2 changed files with 10 additions and 7 deletions
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6
scripts/Makefile.host
View File

@ -67,13 +67,15 @@ _hostc_flags = $(KBUILD_HOSTCFLAGS) $(HOST_EXTRACFLAGS) \
_hostcxx_flags = $(KBUILD_HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
$(HOSTCXXFLAGS_$(basetarget).o)
ifeq ($(KBUILD_SRC),)
__hostc_flags = $(_hostc_flags)
__hostcxx_flags = $(_hostcxx_flags)
else
ifeq ($(KBUILD_EXTMOD),)
ifneq ($(KBUILD_SRC),)
__hostc_flags = -I$(obj) $(call flags,_hostc_flags)
__hostcxx_flags = -I$(obj) $(call flags,_hostcxx_flags)
endif
endif
hostc_flags = -Wp,-MD,$(depfile) $(__hostc_flags)
hostcxx_flags = -Wp,-MD,$(depfile) $(__hostcxx_flags)

11
scripts/Makefile.lib
View File

@ -137,14 +137,14 @@ _c_flags += $(if $(patsubst n%,, \
$(CFLAGS_KCOV))
endif
# If building the kernel in a separate objtree expand all occurrences
# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
ifeq ($(KBUILD_SRC),)
__c_flags = $(_c_flags)
__a_flags = $(_a_flags)
__cpp_flags = $(_cpp_flags)
else
# If building the kernel in a separate objtree expand all occurrences
# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
ifeq ($(KBUILD_EXTMOD),)
ifneq ($(KBUILD_SRC),)
# -I$(obj) locates generated .h files
# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
@ -155,6 +155,7 @@ __c_flags = $(if $(obj),$(call addtree,-I$(src)) -I$(obj)) \
__a_flags = $(call flags,_a_flags)
__cpp_flags = $(call flags,_cpp_flags)
endif
endif
c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
-include $(srctree)/include/linux/compiler_types.h \