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selftests: Fix O= and KBUILD_OUTPUT handling for relative paths

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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>
This commit is contained in:
Shuah Khan 2019-10-14 19:45:05 -06:00
parent ce3a677802
commit 303e6218ec
1 changed files with 3 additions and 2 deletions
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5
tools/testing/selftests/Makefile
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@ -86,10 +86,10 @@ override LDFLAGS =
endif
ifneq ($(O),)
BUILD := $(O)
BUILD := $(abs_objtree)
else
ifneq ($(KBUILD_OUTPUT),)
BUILD := $(KBUILD_OUTPUT)/kselftest
BUILD := $(abs_objtree)/kselftest
else
BUILD := $(shell pwd)
DEFAULT_INSTALL_HDR_PATH := 1
@ -102,6 +102,7 @@ include $(top_srcdir)/scripts/subarch.include
ARCH ?= $(SUBARCH)
export KSFT_KHDR_INSTALL_DONE := 1
export BUILD
#$(info abd_objtree = $(abs_objtree) BUILD = $(BUILD))
# build and run gpio when output directory is the src dir.
# gpio has dependency on tools/gpio and builds tools/gpio