1 # These variables are specifically meant to be overridable via the make
4 WASM_NM ?
= $(patsubst %clang
,%llvm-nm
,$(WASM_CC
))
5 WASM_AR ?
= $(patsubst %clang
,%llvm-ar
,$(WASM_CC
))
6 WASM_CFLAGS ?
= -O2
-DNDEBUG
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
12 THREAD_MODEL ?
= single
15 BUILD_LIBC_TOP_HALF ?
= yes
16 # The directory where we're store intermediate artifacts.
17 OBJDIR ?
= $(CURDIR
)/build
20 ifneq ($(BUILD_DLMALLOC
),yes
)
21 $(error build currently depends on BUILD_DLMALLOC
=yes
)
24 # Variables from this point on are not meant to be overridable via the
27 # Set the target variables. Multiarch triples notably omit the vendor field,
28 # which happens to be what we do for the main target triple too.
29 TARGET_TRIPLE
= wasm32-wasi
30 MULTIARCH_TRIPLE
= wasm32-wasi
32 # These variables describe the locations of various files and directories in
34 DLMALLOC_DIR
= $(CURDIR
)/dlmalloc
35 DLMALLOC_SRC_DIR
= $(DLMALLOC_DIR
)/src
36 DLMALLOC_SOURCES
= $(DLMALLOC_SRC_DIR
)/dlmalloc.c
37 DLMALLOC_INC
= $(DLMALLOC_DIR
)/include
38 LIBC_BOTTOM_HALF_DIR
= $(CURDIR
)/libc-bottom-half
39 LIBC_BOTTOM_HALF_CLOUDLIBC_SRC
= $(LIBC_BOTTOM_HALF_DIR
)/cloudlibc
/src
40 LIBC_BOTTOM_HALF_CLOUDLIBC_SRC_INC
= $(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC
)/include
41 LIBC_BOTTOM_HALF_HEADERS_PUBLIC
= $(LIBC_BOTTOM_HALF_DIR
)/headers
/public
42 LIBC_BOTTOM_HALF_HEADERS_PRIVATE
= $(LIBC_BOTTOM_HALF_DIR
)/headers
/private
43 LIBC_BOTTOM_HALF_SOURCES
= $(LIBC_BOTTOM_HALF_DIR
)/sources
44 LIBC_BOTTOM_HALF_ALL_SOURCES
= \
45 $(shell find
$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC
) -name \
*.c
) \
46 $(shell find
$(LIBC_BOTTOM_HALF_SOURCES
) -name \
*.c
)
48 # FIXME(https://reviews.llvm.org/D85567) - due to a bug in LLD the weak
49 # references to a function defined in `chdir.c` only work if `chdir.c` is at the
50 # end of the archive, but once that LLD review lands and propagates into LLVM
51 # then we don't have to do this.
52 LIBC_BOTTOM_HALF_ALL_SOURCES
:= $(filter-out $(LIBC_BOTTOM_HALF_SOURCES
)/chdir.c
,$(LIBC_BOTTOM_HALF_ALL_SOURCES
))
53 LIBC_BOTTOM_HALF_ALL_SOURCES
:= $(LIBC_BOTTOM_HALF_ALL_SOURCES
) $(LIBC_BOTTOM_HALF_SOURCES
)/chdir.c
55 LIBWASI_EMULATED_MMAN_SOURCES
= \
56 $(shell find
$(LIBC_BOTTOM_HALF_DIR
)/mman
-name \
*.c
)
57 LIBWASI_EMULATED_PROCESS_CLOCKS_SOURCES
= \
58 $(shell find
$(LIBC_BOTTOM_HALF_DIR
)/clocks
-name \
*.c
)
59 LIBWASI_EMULATED_GETPID_SOURCES
= \
60 $(shell find
$(LIBC_BOTTOM_HALF_DIR
)/getpid
-name \
*.c
)
61 LIBWASI_EMULATED_SIGNAL_SOURCES
= \
62 $(shell find
$(LIBC_BOTTOM_HALF_DIR
)/signal
-name \
*.c
)
63 LIBWASI_EMULATED_SIGNAL_MUSL_SOURCES
= \
64 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/signal
/psignal.c \
65 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/string
/strsignal.c
66 LIBC_BOTTOM_HALF_CRT_SOURCES
= $(wildcard $(LIBC_BOTTOM_HALF_DIR
)/crt
/*.c
)
67 LIBC_TOP_HALF_DIR
= $(CURDIR
)/libc-top-half
68 LIBC_TOP_HALF_MUSL_DIR
= $(LIBC_TOP_HALF_DIR
)/musl
69 LIBC_TOP_HALF_MUSL_SRC_DIR
= $(LIBC_TOP_HALF_MUSL_DIR
)/src
70 LIBC_TOP_HALF_MUSL_INC
= $(LIBC_TOP_HALF_MUSL_DIR
)/include
71 LIBC_TOP_HALF_MUSL_SOURCES
= \
72 $(addprefix $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/, \
80 misc
/getdomainname.c \
95 network
/in6addr_any.c \
96 network
/in6addr_loopback.c \
100 fenv
/fesetexceptflag.c \
101 fenv
/fegetexceptflag.c \
102 fenv
/feholdexcept.c \
107 exit
/at_quick_exit.c \
120 time
/timespec_get.c \
125 time
/__tm_to_secs.c \
126 time
/__month_to_secs.c \
127 time
/__secs_to_tm.c \
128 time
/__year_to_secs.c \
132 dirent
/versionsort.c \
138 unistd
/posix_close.c \
140 $(filter-out %/procfdname.c
%/syscall.c
%/syscall_ret.c
%/vdso.c
%/version.c
, \
141 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/internal
/*.c
)) \
142 $(filter-out %/flockfile.c
%/funlockfile.c
%/__lockfile.c
%/ftrylockfile.c \
144 %/tmpnam.c
%/tmpfile.c
%/tempnam.c \
145 %/popen.c
%/pclose.c \
148 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdio
/*.c
)) \
149 $(filter-out %/strsignal.c
, \
150 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/string
/*.c
)) \
151 $(filter-out %/dcngettext.c
%/textdomain.c
%/bind_textdomain_codeset.c
, \
152 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/locale
/*.c
)) \
153 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdlib
/*.c
) \
154 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/search
/*.c
) \
155 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/multibyte
/*.c
) \
156 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/regex
/*.c
) \
157 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/prng
/*.c
) \
158 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/conf
/*.c
) \
159 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/ctype
/*.c
) \
160 $(filter-out %/__signbit.c
%/__signbitf.c
%/__signbitl.c \
161 %/__fpclassify.c
%/__fpclassifyf.c
%/__fpclassifyl.c \
163 %/floorf.c
%/floor.c \
164 %/truncf.c
%/trunc.c \
166 %/nearbyintf.c
%/nearbyint.c \
169 %/copysignf.c
%/copysign.c \
170 %/fminf.c
%/fmaxf.c \
172 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/math
/*.c
)) \
173 $(filter-out %/crealf.c
%/creal.c
%creall.c \
174 %/cimagf.c
%/cimag.c
%cimagl.c
, \
175 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/complex
/*.c
)) \
176 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/crypt
/*.c
)
177 MUSL_PRINTSCAN_SOURCES
= \
178 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/internal
/floatscan.c \
179 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdio
/vfprintf.c \
180 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdio
/vfwprintf.c \
181 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdio
/vfscanf.c \
182 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdlib
/strtod.c \
183 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdlib
/wcstod.c
184 LIBC_TOP_HALF_HEADERS_PRIVATE
= $(LIBC_TOP_HALF_DIR
)/headers
/private
185 LIBC_TOP_HALF_SOURCES
= $(LIBC_TOP_HALF_DIR
)/sources
186 LIBC_TOP_HALF_ALL_SOURCES
= \
187 $(LIBC_TOP_HALF_MUSL_SOURCES
) \
188 $(shell find
$(LIBC_TOP_HALF_SOURCES
) -name \
*.c
)
191 CFLAGS
= $(WASM_CFLAGS
) --target
=$(TARGET_TRIPLE
)
192 # WebAssembly floating-point match doesn't trap.
193 # TODO: Add -fno-signaling-nans when the compiler supports it.
194 CFLAGS
+= -fno-trapping-math
195 # Add all warnings, but disable a few which occur in third-party code.
196 CFLAGS
+= -Wall
-Wextra
-Werror \
197 -Wno-null-pointer-arithmetic \
198 -Wno-unused-parameter \
200 -Wno-unused-variable \
201 -Wno-unused-function \
202 -Wno-ignored-attributes \
203 -Wno-missing-braces \
206 # Configure support for threads.
207 ifeq ($(THREAD_MODEL
), single
)
208 CFLAGS
+= -mthread-model single
210 ifeq ($(THREAD_MODEL
), posix
)
211 CFLAGS
+= -mthread-model posix
-pthread
215 CFLAGS
+= --sysroot
="$(SYSROOT)"
217 # These variables describe the locations of various files and directories in
219 objs
= $(patsubst $(CURDIR
)/%.c
,$(OBJDIR
)/%.o
,$(1))
220 DLMALLOC_OBJS
= $(call objs
,$(DLMALLOC_SOURCES
))
221 LIBC_BOTTOM_HALF_ALL_OBJS
= $(call objs
,$(LIBC_BOTTOM_HALF_ALL_SOURCES
))
222 LIBC_TOP_HALF_ALL_OBJS
= $(call objs
,$(LIBC_TOP_HALF_ALL_SOURCES
))
223 ifeq ($(BUILD_DLMALLOC
),yes
)
224 LIBC_OBJS
+= $(DLMALLOC_OBJS
)
226 # Add libc-bottom-half's objects.
227 LIBC_OBJS
+= $(LIBC_BOTTOM_HALF_ALL_OBJS
)
228 ifeq ($(BUILD_LIBC_TOP_HALF
),yes
)
229 # libc-top-half is musl.
230 LIBC_OBJS
+= $(LIBC_TOP_HALF_ALL_OBJS
)
232 MUSL_PRINTSCAN_OBJS
= $(call objs
,$(MUSL_PRINTSCAN_SOURCES
))
233 MUSL_PRINTSCAN_LONG_DOUBLE_OBJS
= $(patsubst %.o
,%.long-double.o
,$(MUSL_PRINTSCAN_OBJS
))
234 MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS
= $(patsubst %.o
,%.no-floating-point.o
,$(MUSL_PRINTSCAN_OBJS
))
235 LIBWASI_EMULATED_MMAN_OBJS
= $(call objs
,$(LIBWASI_EMULATED_MMAN_SOURCES
))
236 LIBWASI_EMULATED_PROCESS_CLOCKS_OBJS
= $(call objs
,$(LIBWASI_EMULATED_PROCESS_CLOCKS_SOURCES
))
237 LIBWASI_EMULATED_GETPID_OBJS
= $(call objs
,$(LIBWASI_EMULATED_GETPID_SOURCES
))
238 LIBWASI_EMULATED_SIGNAL_OBJS
= $(call objs
,$(LIBWASI_EMULATED_SIGNAL_SOURCES
))
239 LIBWASI_EMULATED_SIGNAL_MUSL_OBJS
= $(call objs
,$(LIBWASI_EMULATED_SIGNAL_MUSL_SOURCES
))
241 # These variables describe the locations of various files and
242 # directories in the generated sysroot tree.
243 SYSROOT_LIB
:= $(SYSROOT
)/lib
/$(MULTIARCH_TRIPLE
)
244 SYSROOT_INC
= $(SYSROOT
)/include
245 SYSROOT_SHARE
= $(SYSROOT
)/share
/$(MULTIARCH_TRIPLE
)
247 # Files from musl's include directory that we don't want to install in the
248 # sysroot's include directory.
251 # Remove files which aren't headers (we generate alltypes.h below).
252 MUSL_OMIT_HEADERS
+= \
253 "bits/syscall.h.in" \
254 "bits/alltypes.h.in" \
257 # Use the compiler's version of these headers.
258 MUSL_OMIT_HEADERS
+= \
262 # Use the WASI errno definitions.
263 MUSL_OMIT_HEADERS
+= \
266 # Remove headers that aren't supported yet or that aren't relevant for WASI.
267 MUSL_OMIT_HEADERS
+= \
270 "sys/kd.h" "sys/vt.h" "sys/soundcard.h" "sys/sem.h" \
271 "sys/shm.h" "sys/msg.h" "sys/ipc.h" "sys/ptrace.h" \
273 "bits/kd.h" "bits/vt.h" "bits/soundcard.h" "bits/sem.h" \
274 "bits/shm.h" "bits/msg.h" "bits/ipc.h" "bits/ptrace.h" \
278 "syslog.h" "sys/syslog.h" \
279 "wait.h" "sys/wait.h" \
280 "ucontext.h" "sys/ucontext.h" \
286 "sys/epoll.h" "sys/reboot.h" "sys/swap.h" \
287 "sys/sendfile.h" "sys/inotify.h" \
296 "sys/personality.h" \
297 "elf.h" "link.h" "bits/link.h" \
298 "scsi/scsi.h" "scsi/scsi_ioctl.h" "scsi/sg.h" \
300 "pwd.h" "shadow.h" "grp.h" \
320 "netinet/if_ether.h" \
326 ifeq ($(THREAD_MODEL
), single
)
327 # Remove headers not supported in single-threaded mode.
328 MUSL_OMIT_HEADERS
+= "aio.h" "pthread.h"
333 $(SYSROOT_LIB
)/libc.a
: $(LIBC_OBJS
)
335 $(SYSROOT_LIB
)/libc-printscan-long-double.a
: $(MUSL_PRINTSCAN_LONG_DOUBLE_OBJS
)
337 $(SYSROOT_LIB
)/libc-printscan-no-floating-point.a
: $(MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS
)
339 $(SYSROOT_LIB
)/libwasi-emulated-mman.a
: $(LIBWASI_EMULATED_MMAN_OBJS
)
341 $(SYSROOT_LIB
)/libwasi-emulated-process-clocks.a
: $(LIBWASI_EMULATED_PROCESS_CLOCKS_OBJS
)
343 $(SYSROOT_LIB
)/libwasi-emulated-getpid.a
: $(LIBWASI_EMULATED_GETPID_OBJS
)
345 $(SYSROOT_LIB
)/libwasi-emulated-signal.a
: $(LIBWASI_EMULATED_SIGNAL_OBJS
) $(LIBWASI_EMULATED_SIGNAL_MUSL_OBJS
)
349 # On Windows, the commandline for the ar invocation got too long, so it needs to be split up.
350 $(WASM_AR
) crs
$@
$(wordlist
1, 199, $^
)
351 $(WASM_AR
) crs
$@
$(wordlist
200, 399, $^
)
352 $(WASM_AR
) crs
$@
$(wordlist
400, 599, $^
)
353 $(WASM_AR
) crs
$@
$(wordlist
600, 799, $^
)
354 # This might eventually overflow again, but at least it'll do so in a loud way instead of
355 # silently dropping the tail.
356 $(WASM_AR
) crs
$@
$(wordlist
800, 100000, $^
)
358 $(MUSL_PRINTSCAN_OBJS
): CFLAGS
+= \
359 -D__wasilibc_printscan_no_long_double \
360 -D__wasilibc_printscan_full_support_option
="\"add -lc-printscan-long-double to the link command\""
362 $(MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS
): CFLAGS
+= \
363 -D__wasilibc_printscan_no_floating_point \
364 -D__wasilibc_printscan_floating_point_support_option
="\"remove -lc-printscan-no-floating-point from the link command\""
366 $(LIBWASI_EMULATED_SIGNAL_MUSL_OBJS
): CFLAGS
+= \
367 -D_WASI_EMULATED_SIGNAL
369 $(OBJDIR
)/%.long-double.o
: $(CURDIR
)/%.c include_dirs
371 "$(WASM_CC)" $(CFLAGS
) -MD
-MP
-o
$@
-c
$<
373 $(OBJDIR
)/%.no-floating-point.o
: $(CURDIR
)/%.c include_dirs
375 "$(WASM_CC)" $(CFLAGS
) -MD
-MP
-o
$@
-c
$<
377 $(OBJDIR
)/%.o
: $(CURDIR
)/%.c include_dirs
379 "$(WASM_CC)" $(CFLAGS
) -MD
-MP
-o
$@
-c
$<
381 -include $(shell find
$(OBJDIR
) -name \
*.d
)
383 $(DLMALLOC_OBJS
): CFLAGS
+= \
386 startup_files
$(LIBC_BOTTOM_HALF_ALL_OBJS
): CFLAGS
+= \
387 -I
$(LIBC_BOTTOM_HALF_HEADERS_PRIVATE
) \
388 -I
$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC_INC
) \
389 -I
$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC
)
391 $(LIBC_TOP_HALF_ALL_OBJS
) $(MUSL_PRINTSCAN_LONG_DOUBLE_OBJS
) $(MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS
) $(LIBWASI_EMULATED_SIGNAL_MUSL_OBJS
): CFLAGS
+= \
392 -I
$(LIBC_TOP_HALF_MUSL_SRC_DIR
)/include \
393 -I
$(LIBC_TOP_HALF_MUSL_SRC_DIR
)/internal \
394 -I
$(LIBC_TOP_HALF_MUSL_DIR
)/arch
/wasm32 \
395 -I
$(LIBC_TOP_HALF_MUSL_DIR
)/arch
/generic \
396 -I
$(LIBC_TOP_HALF_HEADERS_PRIVATE
) \
398 -Wno-shift-op-parentheses \
399 -Wno-bitwise-op-parentheses \
400 -Wno-logical-op-parentheses \
401 -Wno-string-plus-int \
405 $(LIBWASI_EMULATED_PROCESS_CLOCKS_OBJS
): CFLAGS
+= \
406 -I
$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC
)
409 $(RM
) -r
"$(SYSROOT)"
412 # Install the include files.
414 mkdir
-p
"$(SYSROOT_INC)"
415 cp
-r
"$(LIBC_BOTTOM_HALF_HEADERS_PUBLIC)"/* "$(SYSROOT_INC)"
417 # Generate musl's bits/alltypes.h header.
418 mkdir
-p
"$(SYSROOT_INC)/bits"
419 sed
-f
$(LIBC_TOP_HALF_MUSL_DIR
)/tools
/mkalltypes.sed \
420 $(LIBC_TOP_HALF_MUSL_DIR
)/arch
/wasm32
/bits
/alltypes.h.in \
421 $(LIBC_TOP_HALF_MUSL_DIR
)/include/alltypes.h.in \
422 > "$(SYSROOT_INC)/bits/alltypes.h"
424 # Copy in the bulk of musl's public header files.
425 cp
-r
"$(LIBC_TOP_HALF_MUSL_INC)"/* "$(SYSROOT_INC)"
426 # Copy in the musl's "bits" header files.
427 cp
-r
"$(LIBC_TOP_HALF_MUSL_DIR)"/arch
/generic
/bits
/* "$(SYSROOT_INC)/bits"
428 cp
-r
"$(LIBC_TOP_HALF_MUSL_DIR)"/arch
/wasm32
/bits
/* "$(SYSROOT_INC)/bits"
430 # Remove selected header files.
431 $(RM
) $(patsubst %,$(SYSROOT_INC
)/%,$(MUSL_OMIT_HEADERS
))
433 startup_files
: include_dirs
435 # Build the startup files.
437 @mkdir
-p
"$(OBJDIR)"
439 "$(WASM_CC)" $(CFLAGS
) -c
$(LIBC_BOTTOM_HALF_CRT_SOURCES
) -MD
-MP
&& \
440 mkdir
-p
"$(SYSROOT_LIB)" && \
441 mv
*.o
"$(SYSROOT_LIB)"
444 $(SYSROOT_LIB
)/libc.a \
445 $(SYSROOT_LIB
)/libc-printscan-long-double.a \
446 $(SYSROOT_LIB
)/libc-printscan-no-floating-point.a \
447 $(SYSROOT_LIB
)/libwasi-emulated-mman.a \
448 $(SYSROOT_LIB
)/libwasi-emulated-process-clocks.a \
449 $(SYSROOT_LIB
)/libwasi-emulated-getpid.a \
450 $(SYSROOT_LIB
)/libwasi-emulated-signal.a
452 finish
: startup_files libc
454 # Create empty placeholder libraries.
456 for name in m rt pthread crypt util xnet resolv dl
; do \
457 $(WASM_AR
) crs
"$(SYSROOT_LIB)/lib$${name}.a"; \
461 # Collect metadata on the sysroot and perform sanity checks.
463 mkdir
-p
"$(SYSROOT_SHARE)"
466 # Collect symbol information.
468 @
# TODO: Use llvm-nm --extern-only instead of grep. This is blocked on
469 @
# LLVM PR40497, which is fixed in 9.0, but not in 8.0.
470 @
# Ignore certain llvm builtin symbols such as those starting with __mul
471 @
# since these dependencies can vary between llvm versions.
472 "$(WASM_NM)" --defined-only
"$(SYSROOT_LIB)"/libc.a
"$(SYSROOT_LIB)"/libwasi-emulated-
*.a
"$(SYSROOT_LIB)"/*.o \
473 |grep
' [[:upper:]] ' |sed
's/.* [[:upper:]] //' |LC_ALL
=C
sort > "$(SYSROOT_SHARE)/defined-symbols.txt"
474 for undef_sym in
$$("$(WASM_NM)" --undefined-only
"$(SYSROOT_LIB)"/libc.a
"$(SYSROOT_LIB)"/libc-
*.a
"$(SYSROOT_LIB)"/*.o \
475 |grep
' U ' |sed
's/.* U //' |LC_ALL
=C
sort |uniq
); do \
476 grep
-q
'\<'$$undef_sym'\>' "$(SYSROOT_SHARE)/defined-symbols.txt" || echo
$$undef_sym; \
477 done | grep
-v
"^__mul" > "$(SYSROOT_SHARE)/undefined-symbols.txt"
478 grep
'^_*imported_wasi_' "$(SYSROOT_SHARE)/undefined-symbols.txt" \
479 > "$(SYSROOT_LIB)/libc.imports"
482 # Generate a test file that includes all public header files.
485 for header in
$$(find
include -type f
-not
-name mman.h
-not
-name signal.h
-not
-name times.h
-not
-name resource.h |grep
-v
/bits
/); do \
486 echo
'#include <'$$header'>' | sed
's/include\///' ; \
487 done |LC_ALL
=C
sort >share
/$(MULTIARCH_TRIPLE
)/include-all.c
; \
491 # Test that it compiles.
493 "$(WASM_CC)" $(CFLAGS
) -fsyntax-only
"$(SYSROOT_SHARE)/include-all.c" -Wno-\
#warnings
496 # Collect all the predefined macros, except for compiler version macros
497 # which we don't need to track here.
500 @
# For the __*_ATOMIC_*_LOCK_FREE macros, squash individual compiler names
501 @
# to attempt, toward keeping these files compiler-independent.
503 @
# We have to add `-isystem $(SYSROOT_INC)` because otherwise clang puts
504 @
# its builtin include path first, which produces compiler-specific
507 @
# TODO: Undefine __FLOAT128__ for now since it's not in clang 8.0.
508 @
# TODO: Filter out __FLT16_* for now, as not all versions of clang have these.
509 "$(WASM_CC)" $(CFLAGS
) "$(SYSROOT_SHARE)/include-all.c" \
510 -isystem
$(SYSROOT_INC
) \
512 -E
-dM
-Wno-\
#warnings \
518 -U__clang_patchlevel__ \
519 -U__clang_version__ \
522 -U__GNUC_PATCHLEVEL__ \
525 | sed
-e
's/__[[:upper:][:digit:]]*_ATOMIC_\([[:upper:][:digit:]_]*\)_LOCK_FREE/__compiler_ATOMIC_\1_LOCK_FREE/' \
526 | grep
-v
'^#define __FLT16_' \
527 > "$(SYSROOT_SHARE)/predefined-macros.txt"
529 # Check that the computed metadata matches the expected metadata.
530 # This ignores whitespace because on Windows the output has CRLF line endings.
531 diff
-wur
"$(CURDIR)/expected/$(MULTIARCH_TRIPLE)" "$(SYSROOT_SHARE)"
534 # The build succeeded! The generated sysroot is in $(SYSROOT).
538 mkdir
-p
"$(INSTALL_DIR)"
539 cp
-r
"$(SYSROOT)/lib" "$(SYSROOT)/share" "$(SYSROOT)/include" "$(INSTALL_DIR)"
541 .PHONY
: default startup_files libc finish
install include_dirs