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_SIGNAL_SOURCES
= \
60 $(shell find
$(LIBC_BOTTOM_HALF_DIR
)/signal
-name \
*.c
)
61 LIBWASI_EMULATED_SIGNAL_MUSL_SOURCES
= \
62 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/signal
/psignal.c \
63 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/string
/strsignal.c
64 LIBC_BOTTOM_HALF_CRT_SOURCES
= $(wildcard $(LIBC_BOTTOM_HALF_DIR
)/crt
/*.c
)
65 LIBC_TOP_HALF_DIR
= $(CURDIR
)/libc-top-half
66 LIBC_TOP_HALF_MUSL_DIR
= $(LIBC_TOP_HALF_DIR
)/musl
67 LIBC_TOP_HALF_MUSL_SRC_DIR
= $(LIBC_TOP_HALF_MUSL_DIR
)/src
68 LIBC_TOP_HALF_MUSL_INC
= $(LIBC_TOP_HALF_MUSL_DIR
)/include
69 LIBC_TOP_HALF_MUSL_SOURCES
= \
70 $(addprefix $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/, \
78 misc
/getdomainname.c \
93 network
/in6addr_any.c \
94 network
/in6addr_loopback.c \
98 fenv
/fesetexceptflag.c \
99 fenv
/fegetexceptflag.c \
100 fenv
/feholdexcept.c \
105 exit
/at_quick_exit.c \
118 time
/timespec_get.c \
123 time
/__tm_to_secs.c \
124 time
/__month_to_secs.c \
125 time
/__secs_to_tm.c \
126 time
/__year_to_secs.c \
130 dirent
/versionsort.c \
136 unistd
/posix_close.c \
138 $(filter-out %/procfdname.c
%/syscall.c
%/syscall_ret.c
%/vdso.c
%/version.c
, \
139 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/internal
/*.c
)) \
140 $(filter-out %/flockfile.c
%/funlockfile.c
%/__lockfile.c
%/ftrylockfile.c \
142 %/tmpnam.c
%/tmpfile.c
%/tempnam.c \
143 %/popen.c
%/pclose.c \
146 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdio
/*.c
)) \
147 $(filter-out %/strsignal.c
, \
148 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/string
/*.c
)) \
149 $(filter-out %/dcngettext.c
%/textdomain.c
%/bind_textdomain_codeset.c
, \
150 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/locale
/*.c
)) \
151 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdlib
/*.c
) \
152 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/search
/*.c
) \
153 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/multibyte
/*.c
) \
154 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/regex
/*.c
) \
155 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/prng
/*.c
) \
156 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/conf
/*.c
) \
157 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/ctype
/*.c
) \
158 $(filter-out %/__signbit.c
%/__signbitf.c
%/__signbitl.c \
159 %/__fpclassify.c
%/__fpclassifyf.c
%/__fpclassifyl.c \
161 %/floorf.c
%/floor.c \
162 %/truncf.c
%/trunc.c \
164 %/nearbyintf.c
%/nearbyint.c \
167 %/copysignf.c
%/copysign.c \
168 %/fminf.c
%/fmaxf.c \
170 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/math
/*.c
)) \
171 $(filter-out %/crealf.c
%/creal.c
%creall.c \
172 %/cimagf.c
%/cimag.c
%cimagl.c
, \
173 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/complex
/*.c
)) \
174 $(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/crypt
/*.c
)
175 MUSL_PRINTSCAN_SOURCES
= \
176 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/internal
/floatscan.c \
177 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdio
/vfprintf.c \
178 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdio
/vfwprintf.c \
179 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdio
/vfscanf.c \
180 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdlib
/strtod.c \
181 $(LIBC_TOP_HALF_MUSL_SRC_DIR
)/stdlib
/wcstod.c
182 LIBC_TOP_HALF_HEADERS_PRIVATE
= $(LIBC_TOP_HALF_DIR
)/headers
/private
183 LIBC_TOP_HALF_SOURCES
= $(LIBC_TOP_HALF_DIR
)/sources
184 LIBC_TOP_HALF_ALL_SOURCES
= \
185 $(LIBC_TOP_HALF_MUSL_SOURCES
) \
186 $(shell find
$(LIBC_TOP_HALF_SOURCES
) -name \
*.c
)
189 CFLAGS
= $(WASM_CFLAGS
) --target
=$(TARGET_TRIPLE
)
190 # WebAssembly floating-point match doesn't trap.
191 # TODO: Add -fno-signaling-nans when the compiler supports it.
192 CFLAGS
+= -fno-trapping-math
193 # Add all warnings, but disable a few which occur in third-party code.
194 CFLAGS
+= -Wall
-Wextra
-Werror \
195 -Wno-null-pointer-arithmetic \
196 -Wno-unused-parameter \
198 -Wno-unused-variable \
199 -Wno-unused-function \
200 -Wno-ignored-attributes \
201 -Wno-missing-braces \
204 # Configure support for threads.
205 ifeq ($(THREAD_MODEL
), single
)
206 CFLAGS
+= -mthread-model single
208 ifeq ($(THREAD_MODEL
), posix
)
209 CFLAGS
+= -mthread-model posix
-pthread
213 CFLAGS
+= --sysroot
="$(SYSROOT)"
215 # These variables describe the locations of various files and directories in
217 objs
= $(patsubst $(CURDIR
)/%.c
,$(OBJDIR
)/%.o
,$(1))
218 DLMALLOC_OBJS
= $(call objs
,$(DLMALLOC_SOURCES
))
219 LIBC_BOTTOM_HALF_ALL_OBJS
= $(call objs
,$(LIBC_BOTTOM_HALF_ALL_SOURCES
))
220 LIBC_TOP_HALF_ALL_OBJS
= $(call objs
,$(LIBC_TOP_HALF_ALL_SOURCES
))
221 ifeq ($(BUILD_DLMALLOC
),yes
)
222 LIBC_OBJS
+= $(DLMALLOC_OBJS
)
224 # Add libc-bottom-half's objects.
225 LIBC_OBJS
+= $(LIBC_BOTTOM_HALF_ALL_OBJS
)
226 ifeq ($(BUILD_LIBC_TOP_HALF
),yes
)
227 # libc-top-half is musl.
228 LIBC_OBJS
+= $(LIBC_TOP_HALF_ALL_OBJS
)
230 MUSL_PRINTSCAN_OBJS
= $(call objs
,$(MUSL_PRINTSCAN_SOURCES
))
231 MUSL_PRINTSCAN_LONG_DOUBLE_OBJS
= $(patsubst %.o
,%.long-double.o
,$(MUSL_PRINTSCAN_OBJS
))
232 MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS
= $(patsubst %.o
,%.no-floating-point.o
,$(MUSL_PRINTSCAN_OBJS
))
233 LIBWASI_EMULATED_MMAN_OBJS
= $(call objs
,$(LIBWASI_EMULATED_MMAN_SOURCES
))
234 LIBWASI_EMULATED_PROCESS_CLOCKS_OBJS
= $(call objs
,$(LIBWASI_EMULATED_PROCESS_CLOCKS_SOURCES
))
235 LIBWASI_EMULATED_SIGNAL_OBJS
= $(call objs
,$(LIBWASI_EMULATED_SIGNAL_SOURCES
))
236 LIBWASI_EMULATED_SIGNAL_MUSL_OBJS
= $(call objs
,$(LIBWASI_EMULATED_SIGNAL_MUSL_SOURCES
))
238 # These variables describe the locations of various files and
239 # directories in the generated sysroot tree.
240 SYSROOT_LIB
:= $(SYSROOT
)/lib
/$(MULTIARCH_TRIPLE
)
241 SYSROOT_INC
= $(SYSROOT
)/include
242 SYSROOT_SHARE
= $(SYSROOT
)/share
/$(MULTIARCH_TRIPLE
)
244 # Files from musl's include directory that we don't want to install in the
245 # sysroot's include directory.
248 # Remove files which aren't headers (we generate alltypes.h below).
249 MUSL_OMIT_HEADERS
+= \
250 "bits/syscall.h.in" \
251 "bits/alltypes.h.in" \
254 # Use the compiler's version of these headers.
255 MUSL_OMIT_HEADERS
+= \
259 # Use the WASI errno definitions.
260 MUSL_OMIT_HEADERS
+= \
263 # Remove headers that aren't supported yet or that aren't relevant for WASI.
264 MUSL_OMIT_HEADERS
+= \
267 "sys/kd.h" "sys/vt.h" "sys/soundcard.h" "sys/sem.h" \
268 "sys/shm.h" "sys/msg.h" "sys/ipc.h" "sys/ptrace.h" \
270 "bits/kd.h" "bits/vt.h" "bits/soundcard.h" "bits/sem.h" \
271 "bits/shm.h" "bits/msg.h" "bits/ipc.h" "bits/ptrace.h" \
275 "syslog.h" "sys/syslog.h" \
276 "wait.h" "sys/wait.h" \
277 "ucontext.h" "sys/ucontext.h" \
283 "sys/epoll.h" "sys/reboot.h" "sys/swap.h" \
284 "sys/sendfile.h" "sys/inotify.h" \
293 "sys/personality.h" \
294 "elf.h" "link.h" "bits/link.h" \
295 "scsi/scsi.h" "scsi/scsi_ioctl.h" "scsi/sg.h" \
297 "pwd.h" "shadow.h" "grp.h" \
317 "netinet/if_ether.h" \
323 ifeq ($(THREAD_MODEL
), single
)
324 # Remove headers not supported in single-threaded mode.
325 MUSL_OMIT_HEADERS
+= "aio.h" "pthread.h"
330 $(SYSROOT_LIB
)/libc.a
: $(LIBC_OBJS
)
332 $(SYSROOT_LIB
)/libc-printscan-long-double.a
: $(MUSL_PRINTSCAN_LONG_DOUBLE_OBJS
)
334 $(SYSROOT_LIB
)/libc-printscan-no-floating-point.a
: $(MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS
)
336 $(SYSROOT_LIB
)/libwasi-emulated-mman.a
: $(LIBWASI_EMULATED_MMAN_OBJS
)
338 $(SYSROOT_LIB
)/libwasi-emulated-process-clocks.a
: $(LIBWASI_EMULATED_PROCESS_CLOCKS_OBJS
)
340 $(SYSROOT_LIB
)/libwasi-emulated-signal.a
: $(LIBWASI_EMULATED_SIGNAL_OBJS
) $(LIBWASI_EMULATED_SIGNAL_MUSL_OBJS
)
344 # On Windows, the commandline for the ar invocation got too long, so it needs to be split up.
345 $(WASM_AR
) crs
$@
$(wordlist
1, 199, $^
)
346 $(WASM_AR
) crs
$@
$(wordlist
200, 399, $^
)
347 $(WASM_AR
) crs
$@
$(wordlist
400, 599, $^
)
348 $(WASM_AR
) crs
$@
$(wordlist
600, 799, $^
)
349 # This might eventually overflow again, but at least it'll do so in a loud way instead of
350 # silently dropping the tail.
351 $(WASM_AR
) crs
$@
$(wordlist
800, 100000, $^
)
353 $(MUSL_PRINTSCAN_OBJS
): CFLAGS
+= \
354 -D__wasilibc_printscan_no_long_double \
355 -D__wasilibc_printscan_full_support_option
="\"add -lc-printscan-long-double to the link command\""
357 $(MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS
): CFLAGS
+= \
358 -D__wasilibc_printscan_no_floating_point \
359 -D__wasilibc_printscan_floating_point_support_option
="\"remove -lc-printscan-no-floating-point from the link command\""
361 $(LIBWASI_EMULATED_SIGNAL_MUSL_OBJS
): CFLAGS
+= \
362 -D_WASI_EMULATED_SIGNAL
364 $(OBJDIR
)/%.long-double.o
: $(CURDIR
)/%.c include_dirs
366 "$(WASM_CC)" $(CFLAGS
) -MD
-MP
-o
$@
-c
$<
368 $(OBJDIR
)/%.no-floating-point.o
: $(CURDIR
)/%.c include_dirs
370 "$(WASM_CC)" $(CFLAGS
) -MD
-MP
-o
$@
-c
$<
372 $(OBJDIR
)/%.o
: $(CURDIR
)/%.c include_dirs
374 "$(WASM_CC)" $(CFLAGS
) -MD
-MP
-o
$@
-c
$<
376 -include $(shell find
$(OBJDIR
) -name \
*.d
)
378 $(DLMALLOC_OBJS
): CFLAGS
+= \
381 startup_files
$(LIBC_BOTTOM_HALF_ALL_OBJS
): CFLAGS
+= \
382 -I
$(LIBC_BOTTOM_HALF_HEADERS_PRIVATE
) \
383 -I
$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC_INC
) \
384 -I
$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC
)
386 $(LIBC_TOP_HALF_ALL_OBJS
) $(MUSL_PRINTSCAN_LONG_DOUBLE_OBJS
) $(MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS
) $(LIBWASI_EMULATED_SIGNAL_MUSL_OBJS
): CFLAGS
+= \
387 -I
$(LIBC_TOP_HALF_MUSL_SRC_DIR
)/include \
388 -I
$(LIBC_TOP_HALF_MUSL_SRC_DIR
)/internal \
389 -I
$(LIBC_TOP_HALF_MUSL_DIR
)/arch
/wasm32 \
390 -I
$(LIBC_TOP_HALF_MUSL_DIR
)/arch
/generic \
391 -I
$(LIBC_TOP_HALF_HEADERS_PRIVATE
) \
393 -Wno-shift-op-parentheses \
394 -Wno-bitwise-op-parentheses \
395 -Wno-logical-op-parentheses \
396 -Wno-string-plus-int \
400 $(LIBWASI_EMULATED_PROCESS_CLOCKS_OBJS
): CFLAGS
+= \
401 -I
$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC
)
404 $(RM
) -r
"$(SYSROOT)"
407 # Install the include files.
409 mkdir
-p
"$(SYSROOT_INC)"
410 cp
-r
"$(LIBC_BOTTOM_HALF_HEADERS_PUBLIC)"/* "$(SYSROOT_INC)"
412 # Generate musl's bits/alltypes.h header.
413 mkdir
-p
"$(SYSROOT_INC)/bits"
414 sed
-f
$(LIBC_TOP_HALF_MUSL_DIR
)/tools
/mkalltypes.sed \
415 $(LIBC_TOP_HALF_MUSL_DIR
)/arch
/wasm32
/bits
/alltypes.h.in \
416 $(LIBC_TOP_HALF_MUSL_DIR
)/include/alltypes.h.in \
417 > "$(SYSROOT_INC)/bits/alltypes.h"
419 # Copy in the bulk of musl's public header files.
420 cp
-r
"$(LIBC_TOP_HALF_MUSL_INC)"/* "$(SYSROOT_INC)"
421 # Copy in the musl's "bits" header files.
422 cp
-r
"$(LIBC_TOP_HALF_MUSL_DIR)"/arch
/generic
/bits
/* "$(SYSROOT_INC)/bits"
423 cp
-r
"$(LIBC_TOP_HALF_MUSL_DIR)"/arch
/wasm32
/bits
/* "$(SYSROOT_INC)/bits"
425 # Remove selected header files.
426 $(RM
) $(patsubst %,$(SYSROOT_INC
)/%,$(MUSL_OMIT_HEADERS
))
428 startup_files
: include_dirs
430 # Build the startup files.
432 @mkdir
-p
"$(OBJDIR)"
434 "$(WASM_CC)" $(CFLAGS
) -c
$(LIBC_BOTTOM_HALF_CRT_SOURCES
) -MD
-MP
&& \
435 mkdir
-p
"$(SYSROOT_LIB)" && \
436 mv
*.o
"$(SYSROOT_LIB)"
439 $(SYSROOT_LIB
)/libc.a \
440 $(SYSROOT_LIB
)/libc-printscan-long-double.a \
441 $(SYSROOT_LIB
)/libc-printscan-no-floating-point.a \
442 $(SYSROOT_LIB
)/libwasi-emulated-mman.a \
443 $(SYSROOT_LIB
)/libwasi-emulated-process-clocks.a \
444 $(SYSROOT_LIB
)/libwasi-emulated-signal.a
446 finish
: startup_files libc
448 # Create empty placeholder libraries.
450 for name in m rt pthread crypt util xnet resolv dl
; do \
451 $(WASM_AR
) crs
"$(SYSROOT_LIB)/lib$${name}.a"; \
455 # Collect metadata on the sysroot and perform sanity checks.
457 mkdir
-p
"$(SYSROOT_SHARE)"
460 # Collect symbol information.
462 @
# TODO: Use llvm-nm --extern-only instead of grep. This is blocked on
463 @
# LLVM PR40497, which is fixed in 9.0, but not in 8.0.
464 @
# Ignore certain llvm builtin symbols such as those starting with __mul
465 @
# since these dependencies can vary between llvm versions.
466 "$(WASM_NM)" --defined-only
"$(SYSROOT_LIB)"/libc.a
"$(SYSROOT_LIB)"/libwasi-emulated-
*.a
"$(SYSROOT_LIB)"/*.o \
467 |grep
' [[:upper:]] ' |sed
's/.* [[:upper:]] //' |LC_ALL
=C
sort > "$(SYSROOT_SHARE)/defined-symbols.txt"
468 for undef_sym in
$$("$(WASM_NM)" --undefined-only
"$(SYSROOT_LIB)"/libc.a
"$(SYSROOT_LIB)"/libc-
*.a
"$(SYSROOT_LIB)"/*.o \
469 |grep
' U ' |sed
's/.* U //' |LC_ALL
=C
sort |uniq
); do \
470 grep
-q
'\<'$$undef_sym'\>' "$(SYSROOT_SHARE)/defined-symbols.txt" || echo
$$undef_sym; \
471 done | grep
-v
"^__mul" > "$(SYSROOT_SHARE)/undefined-symbols.txt"
472 grep
'^_*imported_wasi_' "$(SYSROOT_SHARE)/undefined-symbols.txt" \
473 > "$(SYSROOT_LIB)/libc.imports"
476 # Generate a test file that includes all public header files.
479 for header in
$$(find
include -type f
-not
-name mman.h
-not
-name signal.h
-not
-name times.h
-not
-name resource.h |grep
-v
/bits
/); do \
480 echo
'#include <'$$header'>' | sed
's/include\///' ; \
481 done |LC_ALL
=C
sort >share
/$(MULTIARCH_TRIPLE
)/include-all.c
; \
485 # Test that it compiles.
487 "$(WASM_CC)" $(CFLAGS
) -fsyntax-only
"$(SYSROOT_SHARE)/include-all.c" -Wno-\
#warnings
490 # Collect all the predefined macros, except for compiler version macros
491 # which we don't need to track here.
494 @
# For the __*_ATOMIC_*_LOCK_FREE macros, squash individual compiler names
495 @
# to attempt, toward keeping these files compiler-independent.
497 @
# We have to add `-isystem $(SYSROOT_INC)` because otherwise clang puts
498 @
# its builtin include path first, which produces compiler-specific
501 @
# TODO: Undefine __FLOAT128__ for now since it's not in clang 8.0.
502 @
# TODO: Filter out __FLT16_* for now, as not all versions of clang have these.
503 "$(WASM_CC)" $(CFLAGS
) "$(SYSROOT_SHARE)/include-all.c" \
504 -isystem
$(SYSROOT_INC
) \
506 -E
-dM
-Wno-\
#warnings \
512 -U__clang_patchlevel__ \
513 -U__clang_version__ \
516 -U__GNUC_PATCHLEVEL__ \
519 | sed
-e
's/__[[:upper:][:digit:]]*_ATOMIC_\([[:upper:][:digit:]_]*\)_LOCK_FREE/__compiler_ATOMIC_\1_LOCK_FREE/' \
520 | grep
-v
'^#define __FLT16_' \
521 > "$(SYSROOT_SHARE)/predefined-macros.txt"
523 # Check that the computed metadata matches the expected metadata.
524 # This ignores whitespace because on Windows the output has CRLF line endings.
525 diff
-wur
"$(CURDIR)/expected/$(MULTIARCH_TRIPLE)" "$(SYSROOT_SHARE)"
528 # The build succeeded! The generated sysroot is in $(SYSROOT).
532 mkdir
-p
"$(INSTALL_DIR)"
533 cp
-r
"$(SYSROOT)/lib" "$(SYSROOT)/share" "$(SYSROOT)/include" "$(INSTALL_DIR)"
535 .PHONY
: default startup_files libc finish
install include_dirs