Since commit d9f4ff50d2aa ("kbuild: spilt cc-option and friends to scripts/Makefile.compiler"), some kselftests fail to build.
The tools/ directory opted out Kbuild, and went in a different direction. They copy any kind of files to the tools/ directory in order to do whatever they want to do in their world.
tools/build/Build.include mimics scripts/Kbuild.include, but some tool Makefiles included the Kbuild one to import a feature that is missing in tools/build/Build.include:
- Commit ec04aa3ae87b ("tools/thermal: tmon: use "-fstack-protector" only if supported") included scripts/Kbuild.include from tools/thermal/tmon/Makefile to import the cc-option macro.
- Commit c2390f16fc5b ("selftests: kvm: fix for compilers that do not support -no-pie") included scripts/Kbuild.include from tools/testing/selftests/kvm/Makefile to import the try-run macro.
- Commit 9cae4ace80ef ("selftests/bpf: do not ignore clang failures") included scripts/Kbuild.include from tools/testing/selftests/bpf/Makefile to import the .DELETE_ON_ERROR target.
- Commit 0695f8bca93e ("selftests/powerpc: Handle Makefile for unrecognized option") included scripts/Kbuild.include from tools/testing/selftests/powerpc/pmu/ebb/Makefile to import the try-run macro.
Copy what they want there, and stop including scripts/Kbuild.include from the tool Makefiles.
Link: https://lore.kernel.org/lkml/86dadf33-70f7-a5ac-cb8c-64966d2f45a1@linux.ibm.... Fixes: d9f4ff50d2aa ("kbuild: spilt cc-option and friends to scripts/Makefile.compiler") Reported-by: Janosch Frank frankja@linux.ibm.com Reported-by: Christian Borntraeger borntraeger@de.ibm.com Signed-off-by: Masahiro Yamada masahiroy@kernel.org ---
tools/testing/selftests/bpf/Makefile | 3 ++- tools/testing/selftests/kvm/Makefile | 12 +++++++++++- .../selftests/powerpc/pmu/ebb/Makefile | 11 ++++++++++- tools/thermal/tmon/Makefile | 19 +++++++++++++++++-- 4 files changed, 40 insertions(+), 5 deletions(-)
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 044bfdcf5b74..d872b9f41543 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -1,5 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 -include ../../../../scripts/Kbuild.include include ../../../scripts/Makefile.arch include ../../../scripts/Makefile.include
@@ -476,3 +475,5 @@ EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ prog_tests/tests.h map_tests/tests.h verifier/tests.h \ feature \ $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32 bpf_gcc bpf_testmod.ko) + +.DELETE_ON_ERROR: diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index a6d61f451f88..8b45bc417d83 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -1,5 +1,15 @@ # SPDX-License-Identifier: GPL-2.0-only -include ../../../../scripts/Kbuild.include + +TMPOUT = .tmp_$$$$ + +try-run = $(shell set -e; \ + TMP=$(TMPOUT)/tmp; \ + mkdir -p $(TMPOUT); \ + trap "rm -rf $(TMPOUT)" EXIT; \ + if ($(1)) >/dev/null 2>&1; \ + then echo "$(2)"; \ + else echo "$(3)"; \ + fi)
all:
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/Makefile b/tools/testing/selftests/powerpc/pmu/ebb/Makefile index af3df79d8163..d5d3e869df93 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/Makefile +++ b/tools/testing/selftests/powerpc/pmu/ebb/Makefile @@ -1,5 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 -include ../../../../../../scripts/Kbuild.include
noarg: $(MAKE) -C ../../ @@ -8,6 +7,16 @@ noarg: CFLAGS += -m64
TMPOUT = $(OUTPUT)/TMPDIR/ + +try-run = $(shell set -e; \ + TMP=$(TMPOUT)/tmp; \ + mkdir -p $(TMPOUT); \ + trap "rm -rf $(TMPOUT)" EXIT; \ + if ($(1)) >/dev/null 2>&1; \ + then echo "$(2)"; \ + else echo "$(3)"; \ + fi) + # Toolchains may build PIE by default which breaks the assembly no-pie-option := $(call try-run, echo 'int main() { return 0; }' | \ $(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie) diff --git a/tools/thermal/tmon/Makefile b/tools/thermal/tmon/Makefile index 59e417ec3e13..92a683e4866c 100644 --- a/tools/thermal/tmon/Makefile +++ b/tools/thermal/tmon/Makefile @@ -1,6 +1,21 @@ # SPDX-License-Identifier: GPL-2.0 -# We need this for the "cc-option" macro. -include ../../../scripts/Kbuild.include + +TMPOUT = .tmp_$$$$ + +try-run = $(shell set -e; \ + TMP=$(TMPOUT)/tmp; \ + mkdir -p $(TMPOUT); \ + trap "rm -rf $(TMPOUT)" EXIT; \ + if ($(1)) >/dev/null 2>&1; \ + then echo "$(2)"; \ + else echo "$(3)"; \ + fi) + +__cc-option = $(call try-run,\ + $(1) -Werror $(2) $(3) -c -x c /dev/null -o "$$TMP",$(3),$(4)) + +cc-option = $(call __cc-option, $(CC),\ + $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS),$(1),$(2))
VERSION = 1.0