The patch titled
Subject: selftests: vm: fix clang build error multiple output files
has been added to the -mm tree. Its filename is
selftests-vm-fix-clang-build-error-multiple-output-files.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/selftests-vm-fix-clang-build-error-multiple-output-files.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/selftests-vm-fix-clang-build-error-multiple-output-files.patch
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------------------------------------------------------
From: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
Subject: selftests: vm: fix clang build error multiple output files
When building the vm selftests using clang, some errors are seen due to
having headers in the compilation command:
clang -Wall -I ../../../../usr/include -no-pie gup_test.c ../../../../mm/gup_test.h -lrt -lpthread -o .../tools/testing/selftests/vm/gup_test
clang: error: cannot specify -o when generating multiple output files
make[1]: *** [../lib.mk:146: .../tools/testing/selftests/vm/gup_test] Error 1
Rework to add the header files to LOCAL_HDRS before including ../lib.mk,
since the dependency is evaluated in '$(OUTPUT)/%:%.c $(LOCAL_HDRS)' in
file lib.mk.
Link: https://lkml.kernel.org/r/20220304000645.1888133-1-yosryahmed@xxxxxxxxxx
Signed-off-by: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Cc: Nathan Chancellor <nathan@xxxxxxxxxx>
Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/vm/Makefile | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/tools/testing/selftests/vm/Makefile~selftests-vm-fix-clang-build-error-multiple-output-files
+++ a/tools/testing/selftests/vm/Makefile
@@ -1,6 +1,8 @@
# SPDX-License-Identifier: GPL-2.0
# Makefile for vm selftests
+LOCAL_HDRS += $(selfdir)/vm/local_config.h $(top_srcdir)/mm/gup_test.h
+
include local_config.mk
uname_M := $(shell uname -m 2>/dev/null || echo not)
@@ -140,10 +142,6 @@ endif
$(OUTPUT)/mlock-random-test $(OUTPUT)/memfd_secret: LDLIBS += -lcap
-$(OUTPUT)/gup_test: ../../../../mm/gup_test.h
-
-$(OUTPUT)/hmm-tests: local_config.h
-
# HMM_EXTRA_LIBS may get set in local_config.mk, or it may be left empty.
$(OUTPUT)/hmm-tests: LDLIBS += $(HMM_EXTRA_LIBS)
_
Patches currently in -mm which might be from yosryahmed@xxxxxxxxxx are
selftests-vm-fix-clang-build-error-multiple-output-files.patch
memcg-add-per-memcg-total-kernel-memory-stat.patch
