1 # These variables are specifically meant to be overridable via
2 # the make command-line.
4 WASM_NM ?
= $(patsubst %clang
,%llvm-nm
,$(WASM_CC
))
5 WASM_AR ?
= $(patsubst %clang
,%llvm-ar
,$(WASM_CC
))
7 # The directory where we build the sysroot.
8 SYSROOT ?
= $(CURDIR
)/sysroot
9 # A directory to install to for "make install".
10 INSTALL_DIR ?
= /usr
/local
15 BUILD_LIBC_BOTTOM_HALF
= yes
16 BUILD_LIBC_TOP_HALF
= yes
17 # The directory where we're store intermediate artifacts.
18 OBJDIR
= $(CURDIR
)/build
21 ifeq ($(BUILD_LIBC_TOP_HALF
),yes
)
22 ifneq ($(BUILD_LIBC_BOTTOM_HALF
),yes
)
23 $(error BUILD_LIBC_TOP_HALF
=yes depends on BUILD_LIBC_BOTTOM_HALF
=yes
)
26 ifeq ($(BUILD_LIBC_BOTTOM_HALF
),yes
)
27 ifneq ($(BUILD_DLMALLOC
),yes
)
28 $(error BUILD_LIBC_BOTTOM_HALF
=yes depends on BUILD_DLMALLOC
=yes
)
32 # These variables describe the locations of various files and
33 # directories in the source tree.
34 BASICS_DIR
= $(CURDIR
)/basics
35 BASICS_INC
= $(BASICS_DIR
)/include
36 BASICS_CRT_SOURCES
= $(wildcard $(BASICS_DIR
)/crt
/*.c
)
37 BASICS_SOURCES
= $(wildcard $(BASICS_DIR
)/sources
/*.c
)
38 DLMALLOC_DIR
= $(CURDIR
)/dlmalloc
39 DLMALLOC_SRC_DIR
= $(DLMALLOC_DIR
)/src
40 DLMALLOC_SOURCES
= $(DLMALLOC_SRC_DIR
)/dlmalloc.c
41 DLMALLOC_INC
= $(DLMALLOC_DIR
)/include
42 LIBC_BOTTOM_HALF_DIR
= $(CURDIR
)/libc-bottom-half
43 LIBC_BOTTOM_HALF_CLOUDLIBC_SRC
= $(LIBC_BOTTOM_HALF_DIR
)/cloudlibc
/src
44 LIBC_BOTTOM_HALF_CLOUDLIBC_SRC_INC
= $(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC
)/include
45 LIBC_BOTTOM_HALF_HEADERS_PUBLIC
= $(LIBC_BOTTOM_HALF_DIR
)/headers
/public
46 LIBC_BOTTOM_HALF_HEADERS_PRIVATE
= $(LIBC_BOTTOM_HALF_DIR
)/headers
/private
47 LIBC_BOTTOM_HALF_LIBPREOPEN_DIR
= $(LIBC_BOTTOM_HALF_DIR
)/libpreopen
48 LIBC_BOTTOM_HALF_LIBPREOPEN_LIB
= $(LIBC_BOTTOM_HALF_LIBPREOPEN_DIR
)/lib
49 LIBC_BOTTOM_HALF_LIBPREOPEN_INC
= $(LIBC_BOTTOM_HALF_LIBPREOPEN_DIR
)/include
50 LIBC_BOTTOM_HALF_SOURCES
= $(LIBC_BOTTOM_HALF_DIR
)/sources
51 LIBC_BOTTOM_HALF_ALL_SOURCES
= \
52 $(shell find
$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC
) -name \
*.c
) \
53 $(LIBC_BOTTOM_HALF_LIBPREOPEN_LIB
)/po_libc_wrappers.c \
54 $(shell find
$(LIBC_BOTTOM_HALF_SOURCES
) -name \
*.c
)
55 LIBWASI_EMULATED_MMAN_SOURCES
= \
56 $(shell find
$(LIBC_BOTTOM_HALF_DIR
)/mman
-name \
*.c
)
57 LIBC_BOTTOM_HALF_CRT_SOURCES
= $(wildcard $(LIBC_BOTTOM_HALF_DIR
)/crt
/*.c
)
58 LIBC_TOP_HALF_DIR
= $(CURDIR
)/libc-top-half
59 LIBC_TOP_HALF_MUSL_DIR
= $(LIBC_TOP_HALF_DIR
)/musl
60 LIBC_TOP_HALF_MUSL_SRC_DIR
= $(LIBC_TOP_HALF_MUSL_DIR
)/src
61 LIBC_TOP_HALF_MUSL_INC
= $(LIBC_TOP_HALF_MUSL_DIR
)/include
62 LIBC_TOP_HALF_MUSL_SOURCES
= \
63 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/a64l.c \
64 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/basename.c \
65 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/dirname.c \
66 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/ffs.c \
67 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/ffsl.c \
68 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/ffsll.c \
69 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/fmtmsg.c \
70 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/getdomainname.c \
71 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/gethostid.c \
72 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/getopt.c \
73 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/getopt_long.c \
74 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/getsubopt.c \
75 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/uname.c \
76 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/misc
/nftw.c \
77 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/errno
/strerror.c \
78 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/network
/htonl.c \
79 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/network
/htons.c \
80 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/network
/ntohl.c \
81 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/network
/ntohs.c \
82 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/network
/inet_ntop.c \
83 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/network
/inet_pton.c \
84 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/network
/inet_aton.c \
85 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/network
/in6addr_any.c \
86 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/network
/in6addr_loopback.c \
87 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/fenv
/fenv.c \
88 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/fenv
/fesetround.c \
89 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/fenv
/feupdateenv.c \
90 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/fenv
/fesetexceptflag.c \
91 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/fenv
/fegetexceptflag.c \
92 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/fenv
/feholdexcept.c \
93 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/exit
/exit.c \
94 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/exit
/atexit.c \
95 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/exit
/assert.c \
96 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/exit
/quick_exit.c \
97 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/exit
/at_quick_exit.c \
98 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/strftime.c \
99 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/asctime.c \
100 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/asctime_r.c \
101 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/ctime.c \
102 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/ctime_r.c \
103 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/wcsftime.c \
104 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/strptime.c \
105 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/difftime.c \
106 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/timegm.c \
107 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/ftime.c \
108 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/gmtime.c \
109 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/gmtime_r.c \
110 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/timespec_get.c \
111 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/getdate.c \
112 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/localtime.c \
113 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/localtime_r.c \
114 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/mktime.c \
115 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/__tm_to_secs.c \
116 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/__month_to_secs.c \
117 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/__secs_to_tm.c \
118 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/__year_to_secs.c \
119 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/time
/__tz.c \
120 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/fcntl
/creat.c \
121 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/dirent
/alphasort.c \
122 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/dirent
/versionsort.c \
123 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/env
/__environ.c \
124 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/env
/clearenv.c \
125 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/env
/getenv.c \
126 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/env
/putenv.c \
127 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/env
/setenv.c \
128 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/env
/unsetenv.c \
129 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/unistd
/posix_close.c \
130 $(filter-out %/procfdname.c
%/syscall.c
%/syscall_ret.c
%/vdso.c
%/version.c
, \
131 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/internal
/*.c
)) \
132 $(filter-out %/flockfile.c
%/funlockfile.c
%/__lockfile.c
%/ftrylockfile.c \
134 %/tmpnam.c
%/tmpfile.c
%/tempnam.c \
135 %/popen.c
%/pclose.c \
138 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdio
/*.c
)) \
139 $(filter-out %/strsignal.c
, \
140 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/string
/*.c
)) \
141 $(filter-out %/dcngettext.c
%/textdomain.c
, \
142 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/locale
/*.c
)) \
143 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdlib
/*.c
) \
144 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/search
/*.c
) \
145 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/multibyte
/*.c
) \
146 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/regex
/*.c
) \
147 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/prng
/*.c
) \
148 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/conf
/*.c
) \
149 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/ctype
/*.c
) \
150 $(filter-out %/__signbit.c
%/__signbitf.c
%/__signbitl.c \
151 %/__fpclassify.c
%/__fpclassifyf.c
%/__fpclassifyl.c \
153 %/floorf.c
%/floor.c \
154 %/truncf.c
%/trunc.c \
156 %/nearbyintf.c
%/nearbyint.c \
159 %/copysignf.c
%/copysign.c
, \
160 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/math
/*.c
)) \
161 $(filter-out %/crealf.c
%/creal.c \
162 %/cimagf.c
%/cimag.c
, \
163 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/complex
/*.c
)) \
164 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/crypt
/*.c
)
165 MUSL_PRINTSCAN_SOURCES
= \
166 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/internal
/floatscan.c \
167 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdio
/vfprintf.c \
168 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdio
/vfwprintf.c \
169 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdio
/vfscanf.c \
170 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdlib
/strtod.c \
171 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdlib
/wcstod.c
172 LIBC_TOP_HALF_HEADERS_PRIVATE
= $(LIBC_TOP_HALF_DIR
)/headers
/private
173 LIBC_TOP_HALF_SOURCES
= $(LIBC_TOP_HALF_DIR
)/sources
174 LIBC_TOP_HALF_ALL_SOURCES
= \
175 $(LIBC_TOP_HALF_MUSL_SOURCES
) \
176 $(shell find
$(LIBC_TOP_HALF_SOURCES
) -name \
*.c
)
178 # Set the target variables. Multiarch triples notably omit the vendor
179 # field, which happens to be what we do for the main target triple too.
180 TARGET_TRIPLE
= wasm32-wasi
181 MULTIARCH_TRIPLE
= wasm32-wasi
183 # These variables describe the locations of various files and
184 # directories in the generated sysroot tree.
185 SYSROOT_LIB
= $(SYSROOT
)/lib
/$(MULTIARCH_TRIPLE
)
186 SYSROOT_INC
= $(SYSROOT
)/include
187 SYSROOT_SHARE
= $(SYSROOT
)/share
/$(MULTIARCH_TRIPLE
)
190 override WASM_CFLAGS
+= --target
=$(TARGET_TRIPLE
)
191 # We're compiling libc.
192 override WASM_CFLAGS
+= -fno-builtin
193 # WebAssembly floating-point match doesn't trap.
194 # TODO: Add -fno-signaling-nans when the compiler supports it.
195 override WASM_CFLAGS
+= -fno-trapping-math
197 # Configure support for threads.
198 ifeq ($(THREAD_MODEL
), single
)
199 override WASM_CFLAGS
+= -mthread-model single
201 ifeq ($(THREAD_MODEL
), posix
)
202 override WASM_CFLAGS
+= -mthread-model posix
-pthread
206 override WASM_CFLAGS
+= --sysroot
="$(SYSROOT)"
208 objs
= $(patsubst $(CURDIR
)/%.c
,$(OBJDIR
)/%.o
,$(1))
209 override BASICS_OBJS
= $(call objs
,$(BASICS_SOURCES
))
210 override DLMALLOC_OBJS
= $(call objs
,$(DLMALLOC_SOURCES
))
211 override LIBC_BOTTOM_HALF_ALL_OBJS
= $(call objs
,$(LIBC_BOTTOM_HALF_ALL_SOURCES
))
212 override LIBC_TOP_HALF_ALL_OBJS
= $(call objs
,$(LIBC_TOP_HALF_ALL_SOURCES
))
213 override LIBC_OBJS
:= $(BASICS_OBJS
)
214 ifeq ($(BUILD_DLMALLOC
),yes
)
215 override LIBC_OBJS
+= $(DLMALLOC_OBJS
)
217 ifeq ($(BUILD_LIBC_BOTTOM_HALF
),yes
)
218 # Override basics' string.o with libc-bottom-half's.
219 override LIBC_OBJS
:= $(filter-out %/string.o
,$(LIBC_OBJS
))
220 # Add libc-bottom-half's objects.
221 override LIBC_OBJS
+= $(LIBC_BOTTOM_HALF_ALL_OBJS
)
223 ifeq ($(BUILD_LIBC_TOP_HALF
),yes
)
224 # Override libc-bottom-half's string.o with libc-top-half's.
225 override LIBC_OBJS
:= $(filter-out %/string.o
,$(LIBC_OBJS
))
226 # Override libc-bottom-half's qsort.o with libc-top-half's.
227 override LIBC_OBJS
:= $(filter-out %/qsort.o
,$(LIBC_OBJS
))
228 # libc-top-half is musl.
229 override LIBC_OBJS
+= $(LIBC_TOP_HALF_ALL_OBJS
)
231 override MUSL_PRINTSCAN_OBJS
= $(call objs
,$(MUSL_PRINTSCAN_SOURCES
))
232 override MUSL_PRINTSCAN_LONG_DOUBLE_OBJS
= $(patsubst %.o
,%.long-double.o
,$(MUSL_PRINTSCAN_OBJS
))
233 override MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS
= $(patsubst %.o
,%.no-floating-point.o
,$(MUSL_PRINTSCAN_OBJS
))
234 override LIBWASI_EMULATED_MMAN_OBJS
= $(call objs
,$(LIBWASI_EMULATED_MMAN_SOURCES
))
238 $(SYSROOT_LIB
)/libc.a
: $(LIBC_OBJS
)
240 $(SYSROOT_LIB
)/libc-printscan-long-double.a
: $(MUSL_PRINTSCAN_LONG_DOUBLE_OBJS
)
242 $(SYSROOT_LIB
)/libc-printscan-no-floating-point.a
: $(MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS
)
244 $(SYSROOT_LIB
)/libwasi-emulated-mman.a
: $(LIBWASI_EMULATED_MMAN_OBJS
)
248 # On Windows, the commandline for the ar invocation got too long, so it needs to be split up.
249 $(WASM_AR
) crs
$@
$(wordlist
1, 199, $^
)
250 $(WASM_AR
) crs
$@
$(wordlist
200, 399, $^
)
251 $(WASM_AR
) crs
$@
$(wordlist
400, 599, $^
)
252 $(WASM_AR
) crs
$@
$(wordlist
600, 799, $^
)
253 # This might eventually overflow again, but at least it'll do so in a loud way instead of
254 # silently dropping the tail.
255 $(WASM_AR
) crs
$@
$(wordlist
800, 100000, $^
)
257 $(MUSL_PRINTSCAN_OBJS
): override WASM_CFLAGS
+= \
258 -D__wasilibc_printscan_no_long_double \
259 -D__wasilibc_printscan_full_support_option
="\"add -lc-printscan-long-double to the link command\""
261 $(MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS
): override WASM_CFLAGS
+= \
262 -D__wasilibc_printscan_no_floating_point \
263 -D__wasilibc_printscan_floating_point_support_option
="\"remove -lc-printscan-no-floating-point from the link command\""
265 $(OBJDIR
)/%.long-double.o
: $(CURDIR
)/%.c include_dirs
267 "$(WASM_CC)" $(WASM_CFLAGS
) -MD
-MP
-o
$@
-c
$<
269 $(OBJDIR
)/%.no-floating-point.o
: $(CURDIR
)/%.c include_dirs
271 "$(WASM_CC)" $(WASM_CFLAGS
) -MD
-MP
-o
$@
-c
$<
273 $(OBJDIR
)/%.o
: $(CURDIR
)/%.c include_dirs
275 "$(WASM_CC)" $(WASM_CFLAGS
) -MD
-MP
-o
$@
-c
$<
277 -include $(shell find
$(OBJDIR
) -name \
*.d
)
279 $(DLMALLOC_OBJS
): override WASM_CFLAGS
+= \
282 $(LIBC_BOTTOM_HALF_ALL_OBJS
): override WASM_CFLAGS
+= \
283 -I
$(LIBC_BOTTOM_HALF_HEADERS_PRIVATE
) \
284 -I
$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC_INC
) \
285 -I
$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC
) \
286 -I
$(LIBC_BOTTOM_HALF_LIBPREOPEN_LIB
) \
287 -I
$(LIBC_BOTTOM_HALF_LIBPREOPEN_INC
)
289 $(LIBC_TOP_HALF_ALL_OBJS
) $(MUSL_PRINTSCAN_LONG_DOUBLE_OBJS
) $(MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS
): override WASM_CFLAGS
+= \
290 -I
$(LIBC_TOP_HALF_MUSL_SRC_DIR
)/include \
291 -I
$(LIBC_TOP_HALF_MUSL_SRC_DIR
)/internal \
292 -I
$(LIBC_TOP_HALF_MUSL_DIR
)/arch
/wasm32 \
293 -I
$(LIBC_TOP_HALF_MUSL_DIR
)/arch
/generic \
294 -I
$(LIBC_TOP_HALF_HEADERS_PRIVATE
) \
296 -Wno-shift-op-parentheses \
297 -Wno-bitwise-op-parentheses \
298 -Wno-logical-op-parentheses \
299 -Wno-string-plus-int \
304 $(RM
) -r
"$(SYSROOT)"
307 # Install the include files.
309 mkdir
-p
"$(SYSROOT_INC)"
310 cp
-r
"$(BASICS_INC)" "$(SYSROOT)"
311 cp
-r
"$(LIBC_BOTTOM_HALF_HEADERS_PUBLIC)"/* "$(SYSROOT_INC)"
313 # Generate musl's bits/alltypes.h header.
314 mkdir
-p
"$(SYSROOT_INC)/bits"
315 sed
-f
$(LIBC_TOP_HALF_MUSL_DIR
)/tools
/mkalltypes.sed \
316 $(LIBC_TOP_HALF_MUSL_DIR
)/arch
/wasm32
/bits
/alltypes.h.in \
317 $(LIBC_TOP_HALF_MUSL_DIR
)/include/alltypes.h.in \
318 > "$(SYSROOT_INC)/bits/alltypes.h"
320 # Copy in the bulk of musl's public header files.
321 cp
-r
"$(LIBC_TOP_HALF_MUSL_INC)"/* "$(SYSROOT_INC)"
322 # Copy in the musl's "bits" header files.
323 cp
-r
"$(LIBC_TOP_HALF_MUSL_DIR)"/arch
/generic
/bits
/* "$(SYSROOT_INC)/bits"
324 cp
-r
"$(LIBC_TOP_HALF_MUSL_DIR)"/arch
/wasm32
/bits
/* "$(SYSROOT_INC)/bits"
326 # Remove files that aren't headers or that aren't supported yet or that aren't relevant for wasm.
327 $(RM
) "$(SYSROOT_INC)/bits/syscall.h.in" \
328 "$(SYSROOT_INC)/bits/alltypes.h.in" \
329 "$(SYSROOT_INC)/alltypes.h.in" \
330 "$(SYSROOT_INC)/sys/procfs.h" \
331 "$(SYSROOT_INC)/sys/user.h" \
332 "$(SYSROOT_INC)/sys/kd.h" \
333 "$(SYSROOT_INC)/bits/kd.h" \
334 "$(SYSROOT_INC)/sys/vt.h" \
335 "$(SYSROOT_INC)/bits/vt.h" \
336 "$(SYSROOT_INC)/sys/soundcard.h" \
337 "$(SYSROOT_INC)/bits/soundcard.h" \
338 "$(SYSROOT_INC)/sys/sem.h" \
339 "$(SYSROOT_INC)/bits/sem.h" \
340 "$(SYSROOT_INC)/sys/statfs.h" \
341 "$(SYSROOT_INC)/sys/vfs.h" \
342 "$(SYSROOT_INC)/bits/statfs.h" \
343 "$(SYSROOT_INC)/sys/statvfs.h" \
344 "$(SYSROOT_INC)/sys/shm.h" \
345 "$(SYSROOT_INC)/bits/shm.h" \
346 "$(SYSROOT_INC)/sys/msg.h" \
347 "$(SYSROOT_INC)/bits/msg.h" \
348 "$(SYSROOT_INC)/sys/ipc.h" \
349 "$(SYSROOT_INC)/bits/ipc.h" \
350 "$(SYSROOT_INC)/syslog.h" \
351 "$(SYSROOT_INC)/sys/syslog.h" \
352 "$(SYSROOT_INC)/paths.h" \
353 "$(SYSROOT_INC)/utmp.h" \
354 "$(SYSROOT_INC)/utmpx.h" \
355 "$(SYSROOT_INC)/lastlog.h" \
356 "$(SYSROOT_INC)/sys/acct.h" \
357 "$(SYSROOT_INC)/sys/cachectl.h" \
358 "$(SYSROOT_INC)/sys/epoll.h" \
359 "$(SYSROOT_INC)/sys/ptrace.h" \
360 "$(SYSROOT_INC)/bits/ptrace.h" \
361 "$(SYSROOT_INC)/sys/reboot.h" \
362 "$(SYSROOT_INC)/sys/swap.h" \
363 "$(SYSROOT_INC)/sys/sendfile.h" \
364 "$(SYSROOT_INC)/sys/quota.h" \
365 "$(SYSROOT_INC)/sys/inotify.h" \
366 "$(SYSROOT_INC)/sys/klog.h" \
367 "$(SYSROOT_INC)/sys/fsuid.h" \
368 "$(SYSROOT_INC)/sys/io.h" \
369 "$(SYSROOT_INC)/sys/prctl.h" \
370 "$(SYSROOT_INC)/sys/mtio.h" \
371 "$(SYSROOT_INC)/sys/mount.h" \
372 "$(SYSROOT_INC)/sys/fanotify.h" \
373 "$(SYSROOT_INC)/sys/personality.h" \
374 "$(SYSROOT_INC)/sys/wait.h" \
375 "$(SYSROOT_INC)/wait.h" \
376 "$(SYSROOT_INC)/bits/errno.h" \
377 "$(SYSROOT_INC)/bits/link.h" \
378 "$(SYSROOT_INC)/link.h" \
379 "$(SYSROOT_INC)/elf.h" \
380 "$(SYSROOT_INC)/scsi/scsi.h" \
381 "$(SYSROOT_INC)/scsi/scsi_ioctl.h" \
382 "$(SYSROOT_INC)/scsi/sg.h" \
383 "$(SYSROOT_INC)/sys/auxv.h" \
384 "$(SYSROOT_INC)/setjmp.h" \
385 "$(SYSROOT_INC)/pwd.h" \
386 "$(SYSROOT_INC)/shadow.h" \
387 "$(SYSROOT_INC)/grp.h" \
388 "$(SYSROOT_INC)/mntent.h" \
389 "$(SYSROOT_INC)/netdb.h" \
390 "$(SYSROOT_INC)/resolv.h" \
391 "$(SYSROOT_INC)/pty.h" \
392 "$(SYSROOT_INC)/dlfcn.h" \
393 "$(SYSROOT_INC)/ulimit.h" \
394 "$(SYSROOT_INC)/sys/xattr.h" \
395 "$(SYSROOT_INC)/wordexp.h" \
396 "$(SYSROOT_INC)/spawn.h" \
397 "$(SYSROOT_INC)/ucontext.h" \
398 "$(SYSROOT_INC)/sys/ucontext.h" \
399 "$(SYSROOT_INC)/sys/membarrier.h" \
400 "$(SYSROOT_INC)/sys/signalfd.h" \
401 "$(SYSROOT_INC)/termios.h" \
402 "$(SYSROOT_INC)/sys/termios.h" \
403 "$(SYSROOT_INC)/bits/termios.h" \
404 "$(SYSROOT_INC)/net/if.h" \
405 "$(SYSROOT_INC)/net/if_arp.h" \
406 "$(SYSROOT_INC)/net/ethernet.h" \
407 "$(SYSROOT_INC)/net/route.h" \
408 "$(SYSROOT_INC)/netinet/if_ether.h" \
409 "$(SYSROOT_INC)/netinet/ether.h" \
410 "$(SYSROOT_INC)/sys/timerfd.h"
411 ifeq ($(THREAD_MODEL
), single
)
412 $(RM
) "$(SYSROOT_INC)/aio.h" \
413 "$(SYSROOT_INC)/pthread.h"
416 ifeq ($(BUILD_LIBC_BOTTOM_HALF
),no
)
417 override CRT_SOURCES
= $(BASICS_CRT_SOURCES
)
419 override CRT_SOURCES
= $(LIBC_BOTTOM_HALF_CRT_SOURCES
)
422 startup_files
: include_dirs
424 # Build the startup files.
426 @mkdir
-p
"$(OBJDIR)"
428 "$(WASM_CC)" $(WASM_CFLAGS
) -c
$(CRT_SOURCES
) -MD
-MP
&& \
429 mkdir
-p
"$(SYSROOT_LIB)" && \
430 mv
*.o
"$(SYSROOT_LIB)"
433 $(SYSROOT_LIB
)/libc.a \
434 $(SYSROOT_LIB
)/libc-printscan-long-double.a \
435 $(SYSROOT_LIB
)/libc-printscan-no-floating-point.a \
436 $(SYSROOT_LIB
)/libwasi-emulated-mman.a
438 finish
: startup_files libc
440 # Create empty placeholder libraries.
442 for name in m rt pthread crypt util xnet resolv dl
; do \
443 $(WASM_AR
) crs
"$(SYSROOT_LIB)/lib$${name}.a"; \
447 # Collect metadata on the sysroot and perform sanity checks.
449 mkdir
-p
"$(SYSROOT_SHARE)"
451 # Collect symbol information.
452 # TODO: Use llvm-nm --extern-only instead of grep. This is blocked on
453 # LLVM PR40497, which is fixed in 9.0, but not in 8.0.
454 # Ignore certain llvm builtin symbols such as those starting with __mul
455 # since these dependencies can vary between llvm versions.
456 "$(WASM_NM)" --defined-only
"$(SYSROOT_LIB)"/libc.a
"$(SYSROOT_LIB)"/*.o \
457 |grep
' [[:upper:]] ' |sed
's/.* [[:upper:]] //' |LC_ALL
=C
sort > "$(SYSROOT_SHARE)/defined-symbols.txt"
458 for undef_sym in
$$("$(WASM_NM)" --undefined-only
"$(SYSROOT_LIB)"/*.a
"$(SYSROOT_LIB)"/*.o \
459 |grep
' U ' |sed
's/.* U //' |LC_ALL
=C
sort |uniq
); do \
460 grep
-q
'\<'$$undef_sym'\>' "$(SYSROOT_SHARE)/defined-symbols.txt" || echo
$$undef_sym; \
461 done | grep
-v
"^__mul" > "$(SYSROOT_SHARE)/undefined-symbols.txt"
462 grep
'^_*wasi_' "$(SYSROOT_SHARE)/undefined-symbols.txt" \
463 > "$(SYSROOT_LIB)/libc.imports"
465 # Generate a test file that includes all public header files.
467 for header in
$$(find
include -type f
-not
-name mman.h |grep
-v
/bits
/); do \
468 echo
'#include <'$$header'>' | sed
's/include\///' ; \
469 done |LC_ALL
=C
sort >share
/$(MULTIARCH_TRIPLE
)/include-all.c
; \
472 # Test that it compiles.
473 "$(WASM_CC)" $(WASM_CFLAGS
) -fsyntax-only
"$(SYSROOT_SHARE)/include-all.c" -Wno-\
#warnings
475 # Collect all the predefined macros, except for compiler version macros
476 # which we don't need to track here. For the __*_ATOMIC_*_LOCK_FREE
477 # macros, squash individual compiler names to attempt, toward keeping
478 # these files compiler-independent.
480 # We have to add `-isystem $(SYSROOT_INC)` because otherwise clang puts
481 # its builtin include path first, which produces compiler-specific
484 # TODO: Undefine __FLOAT128__ for now since it's not in clang 8.0.
485 # TODO: Filter out __FLT16_* for now, as not all versions of clang have these.
486 "$(WASM_CC)" $(WASM_CFLAGS
) "$(SYSROOT_SHARE)/include-all.c" \
487 -isystem
$(SYSROOT_INC
) \
488 -E
-dM
-Wno-\
#warnings \
494 -U__clang_patchlevel__ \
495 -U__clang_version__ \
498 -U__GNUC_PATCHLEVEL__ \
501 | sed
-e
's/__[[:upper:][:digit:]]*_ATOMIC_\([[:upper:][:digit:]_]*\)_LOCK_FREE/__compiler_ATOMIC_\1_LOCK_FREE/' \
502 | grep
-v
'^#define __FLT16_' \
503 > "$(SYSROOT_SHARE)/predefined-macros.txt"
506 # The build succeeded! The generated sysroot is in $(SYSROOT).
510 # Check that the computed metadata matches the expected metadata.
511 # This ignores whitespace because on Windows the output has CRLF line endings.
512 diff
-wur
"$(CURDIR)/expected/$(MULTIARCH_TRIPLE)" "$(SYSROOT_SHARE)"
515 mkdir
-p
"$(INSTALL_DIR)"
516 cp
-r
"$(SYSROOT)/lib" "$(SYSROOT)/share" "$(SYSROOT)/include" "$(INSTALL_DIR)"
518 .PHONY
: default startup_files libc finish
check install include_dirs
projects / wasi-libc.git / blob