diff options
Diffstat (limited to 'tools/testing/selftests/lib.mk')
| -rw-r--r-- | tools/testing/selftests/lib.mk | 91 |
1 files changed, 83 insertions, 8 deletions
diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index aa646e0661f3..d6edcfcb5be8 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -7,6 +7,8 @@ else ifneq ($(filter -%,$(LLVM)),) LLVM_SUFFIX := $(LLVM) endif +CLANG := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) + CLANG_TARGET_FLAGS_arm := arm-linux-gnueabi CLANG_TARGET_FLAGS_arm64 := aarch64-linux-gnu CLANG_TARGET_FLAGS_hexagon := hexagon-linux-musl @@ -18,7 +20,13 @@ CLANG_TARGET_FLAGS_riscv := riscv64-linux-gnu CLANG_TARGET_FLAGS_s390 := s390x-linux-gnu CLANG_TARGET_FLAGS_x86 := x86_64-linux-gnu CLANG_TARGET_FLAGS_x86_64 := x86_64-linux-gnu -CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(ARCH)) + +# Default to host architecture if ARCH is not explicitly given. +ifeq ($(ARCH),) +CLANG_TARGET_FLAGS := $(shell $(CLANG) -print-target-triple) +else +CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(ARCH)) +endif ifeq ($(CROSS_COMPILE),) ifeq ($(CLANG_TARGET_FLAGS),) @@ -30,7 +38,15 @@ else CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) endif # CROSS_COMPILE -CC := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) $(CLANG_FLAGS) -fintegrated-as +# gcc defaults to silence (off) for the following warnings, but clang defaults +# to the opposite. The warnings are not useful for the kernel itself, which is +# why they have remained disabled in gcc for the main kernel build. And it is +# only due to including kernel data structures in the selftests, that we get the +# warnings from clang. Therefore, disable the warnings for clang builds. +CFLAGS += -Wno-address-of-packed-member +CFLAGS += -Wno-gnu-variable-sized-type-not-at-end + +CC := $(CLANG) $(CLANG_FLAGS) -fintegrated-as else CC := $(CROSS_COMPILE)gcc endif # LLVM @@ -44,10 +60,33 @@ endif selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST)))) top_srcdir = $(selfdir)/../../.. +# msg: emit succinct information message describing current building step +# $1 - generic step name (e.g., CC, LINK, etc); +# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; +# $3 - target (assumed to be file); only file name will be emitted; +# $4 - optional extra arg, emitted as-is, if provided. +ifeq ($(V),1) +Q = +msg = +else +Q = @ +msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))"; +MAKEFLAGS += --no-print-directory +endif + ifeq ($(KHDR_INCLUDES),) KHDR_INCLUDES := -isystem $(top_srcdir)/usr/include endif +# In order to use newer items that haven't yet been added to the user's system +# header files, add $(TOOLS_INCLUDES) to the compiler invocation in each +# each selftest. +# You may need to add files to that location, or to refresh an existing file. In +# order to do that, run "make headers" from $(top_srcdir), then copy the +# header file that you want from $(top_srcdir)/usr/include/... , to the matching +# subdir in $(TOOLS_INCLUDE). +TOOLS_INCLUDES := -isystem $(top_srcdir)/tools/include/uapi + # The following are built by lib.mk common compile rules. # TEST_CUSTOM_PROGS should be used by tests that require # custom build rule and prevent common build rule use. @@ -58,7 +97,8 @@ TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS)) TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED)) TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES)) -all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) +all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) \ + $(if $(TEST_GEN_MODS_DIR),gen_mods_dir) define RUN_TESTS BASE_DIR="$(selfdir)"; \ @@ -69,11 +109,29 @@ define RUN_TESTS run_many $(1) endef +define INSTALL_INCLUDES + $(if $(TEST_INCLUDES), \ + relative_files=""; \ + for entry in $(TEST_INCLUDES); do \ + entry_dir=$$(readlink -e "$$(dirname "$$entry")"); \ + entry_name=$$(basename "$$entry"); \ + relative_dir=$${entry_dir#"$$SRC_PATH"/}; \ + if [ "$$relative_dir" = "$$entry_dir" ]; then \ + echo "Error: TEST_INCLUDES entry \"$$entry\" not located inside selftests directory ($$SRC_PATH)" >&2; \ + exit 1; \ + fi; \ + relative_files="$$relative_files $$relative_dir/$$entry_name"; \ + done; \ + cd $(SRC_PATH) && rsync -aR $$relative_files $(OBJ_PATH)/ \ + ) +endef + run_tests: all ifdef building_out_of_srctree - @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \ - rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \ + @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)$(TEST_GEN_MODS_DIR)" != "X" ]; then \ + rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(TEST_GEN_MODS_DIR) $(OUTPUT); \ fi + @$(INSTALL_INCLUDES) @if [ "X$(TEST_PROGS)" != "X" ]; then \ $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \ $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \ @@ -84,11 +142,22 @@ else @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS)) endif +gen_mods_dir: + $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) + +clean_mods_dir: + $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) clean + define INSTALL_SINGLE_RULE $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)) $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/) endef +define INSTALL_MODS_RULE + $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)/$(INSTALL_LIST)) + $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST)/*.ko $(INSTALL_PATH)/$(INSTALL_LIST)) +endef + define INSTALL_RULE $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) @@ -97,12 +166,14 @@ define INSTALL_RULE $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE) + $(eval INSTALL_LIST = $(notdir $(TEST_GEN_MODS_DIR))) $(INSTALL_MODS_RULE) $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE) endef install: all ifdef INSTALL_PATH $(INSTALL_RULE) + $(INSTALL_INCLUDES) else $(error Error: set INSTALL_PATH to use install) endif @@ -122,9 +193,12 @@ define CLEAN $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN) endef -clean: +clean: $(if $(TEST_GEN_MODS_DIR),clean_mods_dir) $(CLEAN) +# Build with _GNU_SOURCE by default +CFLAGS += -D_GNU_SOURCE= + # Enables to extend CFLAGS and LDFLAGS from command line, e.g. # make USERCFLAGS=-Werror USERLDFLAGS=-static CFLAGS += $(USERCFLAGS) @@ -144,7 +218,8 @@ endif ifeq ($(OVERRIDE_TARGETS),) LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h $(OUTPUT)/%:%.c $(LOCAL_HDRS) - $(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@ + $(call msg,CC,,$@) + $(Q)$(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@ $(OUTPUT)/%.o:%.S $(COMPILE.S) $^ -o $@ @@ -153,4 +228,4 @@ $(OUTPUT)/%:%.S $(LINK.S) $^ $(LDLIBS) -o $@ endif -.PHONY: run_tests all clean install emit_tests +.PHONY: run_tests all clean install emit_tests gen_mods_dir clean_mods_dir |