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selftests: Fix O= and KBUILD_OUTPUT handling for relative paths
Fix O= and KBUILD_OUTPUT handling for relative paths. export KBUILD_OUTPUT=../kselftest_size make TARGETS=size kselftest-all or make O=../kselftest_size TARGETS=size kselftest-all In both of these cases, targets get built in ../kselftest_size which is a one level up from the size test directory. make[1]: Entering directory '/mnt/data/lkml/kselftest_size' make --no-builtin-rules INSTALL_HDR_PATH=$BUILD/usr \ ARCH=x86 -C ../../.. headers_install INSTALL ../kselftest_size/usr/include gcc -static -ffreestanding -nostartfiles -s get_size.c -o ../kselftest_size/size/get_size /usr/bin/ld: cannot open output file ../kselftest_size/size/get_size: No such file or directory collect2: error: ld returned 1 exit status make[3]: *** [../lib.mk:138: ../kselftest_size/size/get_size] Error 1 make[2]: *** [Makefile:143: all] Error 2 make[1]: *** [/mnt/data/lkml/linux_5.4/Makefile:1221: kselftest-all] Error 2 make[1]: Leaving directory '/mnt/data/lkml/kselftest_size' make: *** [Makefile:179: sub-make] Error 2 Use abs_objtree exported by the main Makefile. Reported-by: Tim Bird <Tim.Bird@sony.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> Tested-by: Tim Bird <tim.bird@sony.com> Acked-by: Tim Bird <tim.bird@sony.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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@ -86,10 +86,10 @@ override LDFLAGS =
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endif
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ifneq ($(O),)
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BUILD := $(O)
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BUILD := $(abs_objtree)
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else
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ifneq ($(KBUILD_OUTPUT),)
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BUILD := $(KBUILD_OUTPUT)/kselftest
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BUILD := $(abs_objtree)/kselftest
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else
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BUILD := $(shell pwd)
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DEFAULT_INSTALL_HDR_PATH := 1
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@ -102,6 +102,7 @@ include $(top_srcdir)/scripts/subarch.include
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ARCH ?= $(SUBARCH)
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export KSFT_KHDR_INSTALL_DONE := 1
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export BUILD
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#$(info abd_objtree = $(abs_objtree) BUILD = $(BUILD))
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# build and run gpio when output directory is the src dir.
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# gpio has dependency on tools/gpio and builds tools/gpio
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