tools/testing/selftests/lib.mk

   1 # This mimics the top-level Makefile. We do it explicitly here so that this
   2 # Makefile can operate with or without the kbuild infrastructure.
   3 ifneq ($(LLVM),)
   4 CC := clang
   5 else
   6 CC := $(CROSS_COMPILE)gcc
   7 endif
   8
   9 ifeq (0,$(MAKELEVEL))
  10     ifeq ($(OUTPUT),)
  11         OUTPUT := $(shell pwd)
  12         DEFAULT_INSTALL_HDR_PATH := 1
  13     endif
  14 endif
  15 selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST))))
  16
  17 # The following are built by lib.mk common compile rules.
  18 # TEST_CUSTOM_PROGS should be used by tests that require
  19 # custom build rule and prevent common build rule use.
  20 # TEST_PROGS are for test shell scripts.
  21 # TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests
  22 # and install targets. Common clean doesn't touch them.
  23 TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))
  24 TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED))
  25 TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))
  26
  27 ifdef KSFT_KHDR_INSTALL
  28 top_srcdir ?= ../../../..
  29 include $(top_srcdir)/scripts/subarch.include
  30 ARCH            ?= $(SUBARCH)
  31
  32 # set default goal to all, so make without a target runs all, even when
  33 # all isn't the first target in the file.
  34 .DEFAULT_GOAL := all
  35
  36 # Invoke headers install with --no-builtin-rules to avoid circular
  37 # dependency in "make kselftest" case. In this case, second level
  38 # make inherits builtin-rules which will use the rule generate
  39 # Makefile.o and runs into
  40 # "Circular Makefile.o <- prepare dependency dropped."
  41 # and headers_install fails and test compile fails.
  42 # O= KBUILD_OUTPUT cases don't run into this error, since main Makefile
  43 # invokes them as sub-makes and --no-builtin-rules is not necessary,
  44 # but doesn't cause any failures. Keep it simple and use the same
  45 # flags in both cases.
  46 # Note that the support to install headers from lib.mk is necessary
  47 # when test Makefile is run directly with "make -C".
  48 # When local build is done, headers are installed in the default
  49 # INSTALL_HDR_PATH usr/include.
  50 .PHONY: khdr
  51 .NOTPARALLEL:
  52 khdr:
  53 ifndef KSFT_KHDR_INSTALL_DONE
  54 ifeq (1,$(DEFAULT_INSTALL_HDR_PATH))
  55         make --no-builtin-rules ARCH=$(ARCH) -C $(top_srcdir) headers_install
  56 else
  57         make --no-builtin-rules INSTALL_HDR_PATH=$$OUTPUT/usr \
  58                 ARCH=$(ARCH) -C $(top_srcdir) headers_install
  59 endif
  60 endif
  61
  62 all: khdr $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
  63 else
  64 all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
  65 endif
  66
  67 .ONESHELL:
  68 define RUN_TESTS
  69         @BASE_DIR="$(selfdir)";                 \
  70         . $(selfdir)/kselftest/runner.sh;       \
  71         if [ "X$(summary)" != "X" ]; then       \
  72                 per_test_logging=1;             \
  73         fi;                                     \
  74         run_many $(1)
  75 endef
  76
  77 run_tests: all
  78 ifdef building_out_of_srctree
  79         @if [ "X$(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES)" != "X" ]; then
  80                 @rsync -aq $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT)
  81         fi
  82         @if [ "X$(TEST_PROGS)" != "X" ]; then
  83                 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(OUTPUT)/$(TEST_PROGS))
  84         else
  85                 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS))
  86         fi
  87 else
  88         $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))
  89 endif
  90
  91 define INSTALL_SINGLE_RULE
  92         $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))
  93         $(if $(INSTALL_LIST),@echo rsync -a $(INSTALL_LIST) $(INSTALL_PATH)/)
  94         $(if $(INSTALL_LIST),@rsync -a $(INSTALL_LIST) $(INSTALL_PATH)/)
  95 endef
  96
  97 define INSTALL_RULE
  98         $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE)
  99         $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
 100         $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE)
 101         $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE)
 102         $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE)
 103         $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
 104         $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE)
 105 endef
 106
 107 install: all
 108 ifdef INSTALL_PATH
 109         $(INSTALL_RULE)
 110 else
 111         $(error Error: set INSTALL_PATH to use install)
 112 endif
 113
 114 emit_tests:
 115         for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \
 116                 BASENAME_TEST=`basename $$TEST`;        \
 117                 echo "  \\";                            \
 118                 echo -n "       \"$$BASENAME_TEST\"";   \
 119         done;                                           \
 120
 121 # define if isn't already. It is undefined in make O= case.
 122 ifeq ($(RM),)
 123 RM := rm -f
 124 endif
 125
 126 define CLEAN
 127         $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
 128 endef
 129
 130 clean:
 131         $(CLEAN)
 132
 133 # When make O= with kselftest target from main level
 134 # the following aren't defined.
 135 #
 136 ifdef building_out_of_srctree
 137 LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
 138 COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
 139 LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
 140 endif
 141
 142 # Selftest makefiles can override those targets by setting
 143 # OVERRIDE_TARGETS = 1.
 144 ifeq ($(OVERRIDE_TARGETS),)
 145 $(OUTPUT)/%:%.c
 146         $(LINK.c) $^ $(LDLIBS) -o $@
 147
 148 $(OUTPUT)/%.o:%.S
 149         $(COMPILE.S) $^ -o $@
 150
 151 $(OUTPUT)/%:%.S
 152         $(LINK.S) $^ $(LDLIBS) -o $@
 153 endif
 154
 155 .PHONY: run_tests all clean install emit_tests