parisc: regs_return_value() should return gpr28
[muen/linux.git] / tools / build / Makefile.feature
1 feature_dir := $(srctree)/tools/build/feature
2
3 ifneq ($(OUTPUT),)
4   OUTPUT_FEATURES = $(OUTPUT)feature/
5   $(shell mkdir -p $(OUTPUT_FEATURES))
6 endif
7
8 feature_check = $(eval $(feature_check_code))
9 define feature_check_code
10   feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" CXXFLAGS="$(EXTRA_CXXFLAGS) $(FEATURE_CHECK_CXXFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) $(OUTPUT_FEATURES)test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
11 endef
12
13 feature_set = $(eval $(feature_set_code))
14 define feature_set_code
15   feature-$(1) := 1
16 endef
17
18 #
19 # Build the feature check binaries in parallel, ignore errors, ignore return value and suppress output:
20 #
21
22 #
23 # Note that this is not a complete list of all feature tests, just
24 # those that are typically built on a fully configured system.
25 #
26 # [ Feature tests not mentioned here have to be built explicitly in
27 #   the rule that uses them - an example for that is the 'bionic'
28 #   feature check. ]
29 #
30 FEATURE_TESTS_BASIC :=                  \
31         backtrace                       \
32         dwarf                           \
33         dwarf_getlocations              \
34         eventfd                         \
35         fortify-source                  \
36         sync-compare-and-swap           \
37         get_current_dir_name            \
38         glibc                           \
39         gtk2                            \
40         gtk2-infobar                    \
41         libaudit                        \
42         libbfd                          \
43         libelf                          \
44         libelf-getphdrnum               \
45         libelf-gelf_getnote             \
46         libelf-getshdrstrndx            \
47         libelf-mmap                     \
48         libnuma                         \
49         numa_num_possible_cpus          \
50         libperl                         \
51         libpython                       \
52         libpython-version               \
53         libslang                        \
54         libcrypto                       \
55         libunwind                       \
56         pthread-attr-setaffinity-np     \
57         pthread-barrier                 \
58         reallocarray                    \
59         stackprotector-all              \
60         timerfd                         \
61         libdw-dwarf-unwind              \
62         zlib                            \
63         lzma                            \
64         get_cpuid                       \
65         bpf                             \
66         sched_getcpu                    \
67         sdt                             \
68         setns                           \
69         libaio                          \
70         disassembler-four-args
71
72 # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
73 # of all feature tests
74 FEATURE_TESTS_EXTRA :=                  \
75          bionic                         \
76          compile-32                     \
77          compile-x32                    \
78          cplus-demangle                 \
79          hello                          \
80          libbabeltrace                  \
81          libbfd-liberty                 \
82          libbfd-liberty-z               \
83          libopencsd                     \
84          libunwind-x86                  \
85          libunwind-x86_64               \
86          libunwind-arm                  \
87          libunwind-aarch64              \
88          libunwind-debug-frame          \
89          libunwind-debug-frame-arm      \
90          libunwind-debug-frame-aarch64  \
91          cxx                            \
92          llvm                           \
93          llvm-version                   \
94          clang
95
96 FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
97
98 ifeq ($(FEATURE_TESTS),all)
99   FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
100 endif
101
102 FEATURE_DISPLAY ?=              \
103          dwarf                  \
104          dwarf_getlocations     \
105          glibc                  \
106          gtk2                   \
107          libaudit               \
108          libbfd                 \
109          libelf                 \
110          libnuma                \
111          numa_num_possible_cpus \
112          libperl                \
113          libpython              \
114          libslang               \
115          libcrypto              \
116          libunwind              \
117          libdw-dwarf-unwind     \
118          zlib                   \
119          lzma                   \
120          get_cpuid              \
121          bpf                    \
122          libaio                 \
123          disassembler-four-args
124
125 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
126 # If in the future we need per-feature checks/flags for features not
127 # mentioned in this list we need to refactor this ;-).
128 set_test_all_flags = $(eval $(set_test_all_flags_code))
129 define set_test_all_flags_code
130   FEATURE_CHECK_CFLAGS-all  += $(FEATURE_CHECK_CFLAGS-$(1))
131   FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
132 endef
133
134 $(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
135
136 #
137 # Special fast-path for the 'all features are available' case:
138 #
139 $(call feature_check,all,$(MSG))
140
141 #
142 # Just in case the build freshly failed, make sure we print the
143 # feature matrix:
144 #
145 ifeq ($(feature-all), 1)
146   #
147   # test-all.c passed - just set all the core feature flags to 1:
148   #
149   $(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
150   #
151   # test-all.c does not comprise these tests, so we need to
152   # for this case to get features proper values
153   #
154   $(call feature_check,compile-32)
155   $(call feature_check,compile-x32)
156   $(call feature_check,bionic)
157   $(call feature_check,libbabeltrace)
158 else
159   $(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
160 endif
161
162 #
163 # Print the result of the feature test:
164 #
165 feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
166
167 define feature_print_status_code
168   ifeq ($(feature-$(1)), 1)
169     MSG = $(shell printf '...%30s: [ \033[32mon\033[m  ]' $(1))
170   else
171     MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
172   endif
173 endef
174
175 feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
176 define feature_print_text_code
177     MSG = $(shell printf '...%30s: %s' $(1) $(2))
178 endef
179
180 #
181 # generates feature value assignment for name, like:
182 #   $(call feature_assign,dwarf) == feature-dwarf=1
183 #
184 feature_assign = feature-$(1)=$(feature-$(1))
185
186 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
187 FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
188
189 feature_dump_check = $(eval $(feature_dump_check_code))
190 define feature_dump_check_code
191   ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
192     $(2) := 1
193   endif
194 endef
195
196 #
197 # First check if any test from FEATURE_DISPLAY
198 # and set feature_display := 1 if it does
199 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
200
201 #
202 # Now also check if any other test changed,
203 # so we force FEATURE-DUMP generation
204 $(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
205
206 # The $(feature_display) controls the default detection message
207 # output. It's set if:
208 # - detected features differes from stored features from
209 #   last build (in $(FEATURE_DUMP_FILENAME) file)
210 # - one of the $(FEATURE_DISPLAY) is not detected
211 # - VF is enabled
212
213 ifeq ($(feature_dump_changed),1)
214   $(shell rm -f $(FEATURE_DUMP_FILENAME))
215   $(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
216 endif
217
218 feature_display_check = $(eval $(feature_check_display_code))
219 define feature_check_display_code
220   ifneq ($(feature-$(1)), 1)
221     feature_display := 1
222   endif
223 endef
224
225 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
226
227 ifeq ($(VF),1)
228   feature_display := 1
229   feature_verbose := 1
230 endif
231
232 ifeq ($(feature_display),1)
233   $(info )
234   $(info Auto-detecting system features:)
235   $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
236   ifneq ($(feature_verbose),1)
237     $(info )
238   endif
239 endif
240
241 ifeq ($(feature_verbose),1)
242   TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
243   $(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
244   $(info )
245 endif