forked from WebAssembly/wasi-libc
/
Makefile
768 lines (705 loc) · 27.4 KB
/
Makefile
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# These variables are specifically meant to be overridable via the make
# command-line.
# ?= doesn't work for CC and AR because make has a default value for them.
ifeq ($(origin CC), default)
CC := clang
endif
NM ?= $(patsubst %clang,%llvm-nm,$(filter-out ccache sccache,$(CC)))
ifeq ($(origin AR), default)
AR = $(patsubst %clang,%llvm-ar,$(filter-out ccache sccache,$(CC)))
endif
EXTRA_CFLAGS ?= -O2 -DNDEBUG -ftls-model=local-exec -D_WASI_EMULATED_MMAN -D_WASI_EMULATED_PROCESS_CLOCKS
# The directory where we build the sysroot.
SYSROOT ?= $(CURDIR)/sysroot
# A directory to install to for "make install".
INSTALL_DIR ?= /usr/local
# single or posix; note that pthread support is still a work-in-progress.
THREAD_MODEL ?= posix
# dlmalloc or none
MALLOC_IMPL ?= dlmalloc
# yes or no
BUILD_LIBC_TOP_HALF ?= yes
# The directory where we will store intermediate artifacts.
OBJDIR ?= build/$(TARGET_TRIPLE)
# When the length is no larger than this threshold, we consider the
# overhead of bulk memory opcodes to outweigh the performance benefit,
# and fall back to the original musl implementation. See
# https://github.com/WebAssembly/wasi-libc/pull/263 for relevant
# discussion
BULK_MEMORY_THRESHOLD ?= 32
# Variables from this point on are not meant to be overridable via the
# make command-line.
# Set the target variables. Multiarch triples notably omit the vendor field,
# which happens to be what we do for the main target triple too.
#TARGET_ARCH = wasm32
TARGET_TRIPLE = $(TARGET_ARCH)-wasi
MULTIARCH_TRIPLE = $(TARGET_ARCH)-wasi
# These variables describe the locations of various files and directories in
# the source tree.
DLMALLOC_DIR = dlmalloc
DLMALLOC_SRC_DIR = $(DLMALLOC_DIR)/src
DLMALLOC_SOURCES = $(DLMALLOC_SRC_DIR)/dlmalloc.c
DLMALLOC_INC = $(DLMALLOC_DIR)/include
EMMALLOC_DIR = emmalloc
EMMALLOC_SOURCES = $(EMMALLOC_DIR)/emmalloc.c
LIBC_BOTTOM_HALF_DIR = libc-bottom-half
LIBC_BOTTOM_HALF_CLOUDLIBC_SRC = $(LIBC_BOTTOM_HALF_DIR)/cloudlibc/src
LIBC_BOTTOM_HALF_CLOUDLIBC_SRC_INC = $(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC)/include
LIBC_BOTTOM_HALF_HEADERS_PUBLIC = $(LIBC_BOTTOM_HALF_DIR)/headers/public
LIBC_BOTTOM_HALF_HEADERS_PRIVATE = $(LIBC_BOTTOM_HALF_DIR)/headers/private
LIBC_BOTTOM_HALF_SOURCES = $(LIBC_BOTTOM_HALF_DIR)/sources
LIBC_BOTTOM_HALF_ALL_SOURCES = \
$(sort \
$(shell find $(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC) -name \*.c) \
$(shell find $(LIBC_BOTTOM_HALF_SOURCES) -name \*.c))
# FIXME(https://reviews.llvm.org/D85567) - due to a bug in LLD the weak
# references to a function defined in `chdir.c` only work if `chdir.c` is at the
# end of the archive, but once that LLD review lands and propagates into LLVM
# then we don't have to do this.
LIBC_BOTTOM_HALF_ALL_SOURCES := $(filter-out $(LIBC_BOTTOM_HALF_SOURCES)/chdir.c,$(LIBC_BOTTOM_HALF_ALL_SOURCES))
LIBC_BOTTOM_HALF_ALL_SOURCES := $(LIBC_BOTTOM_HALF_ALL_SOURCES) $(LIBC_BOTTOM_HALF_SOURCES)/chdir.c
LIBWASI_EMULATED_MMAN_SOURCES = \
$(sort $(shell find $(LIBC_BOTTOM_HALF_DIR)/mman -name \*.c))
LIBWASI_EMULATED_PROCESS_CLOCKS_SOURCES = \
$(sort $(shell find $(LIBC_BOTTOM_HALF_DIR)/clocks -name \*.c))
LIBWASI_EMULATED_GETPID_SOURCES = \
$(sort $(shell find $(LIBC_BOTTOM_HALF_DIR)/getpid -name \*.c))
LIBWASI_EMULATED_SIGNAL_SOURCES = \
$(sort $(shell find $(LIBC_BOTTOM_HALF_DIR)/signal -name \*.c))
LIBC_BOTTOM_HALF_CRT_SOURCES = $(wildcard $(LIBC_BOTTOM_HALF_DIR)/crt/*.c)
LIBC_TOP_HALF_DIR = libc-top-half
LIBC_TOP_HALF_MUSL_DIR = $(LIBC_TOP_HALF_DIR)/musl
LIBC_TOP_HALF_MUSL_SRC_DIR = $(LIBC_TOP_HALF_MUSL_DIR)/src
LIBC_TOP_HALF_MUSL_INC = $(LIBC_TOP_HALF_MUSL_DIR)/include
LIBC_TOP_HALF_MUSL_SOURCES = \
$(addprefix $(LIBC_TOP_HALF_MUSL_SRC_DIR)/, \
internal/syscall_ret.c \
misc/a64l.c \
misc/basename.c \
misc/dirname.c \
misc/ffs.c \
misc/ffsl.c \
misc/ffsll.c \
misc/fmtmsg.c \
misc/getdomainname.c \
misc/gethostid.c \
misc/getopt.c \
misc/getopt_long.c \
misc/getsubopt.c \
misc/getrlimit.c \
misc/setrlimit.c \
misc/getrusage.c \
misc/uname.c \
misc/nftw.c \
misc/realpath.c \
misc/syslog.c \
errno/strerror.c \
\
network/services.c \
network/getaddrinfo.c \
network/getnameinfo.c \
network/gethostbyname.c \
network/gethostbyname_r.c \
network/gethostbyname2.c \
network/gethostbyname2_r.c \
network/getservbyname.c \
network/getservbyname_r.c \
network/gethostbyaddr.c \
network/gethostbyaddr_r.c \
network/lookup_ipliteral.c \
network/lookup_name.c \
network/lookup_serv.c \
network/freeaddrinfo.c \
network/resolvconf.c \
\
network/gai_strerror.c \
network/getservbyport.c \
network/h_errno.c \
network/hstrerror.c \
network/htonl.c \
network/htons.c \
network/ntohl.c \
network/ntohs.c \
network/inet_ntop.c \
network/inet_ntoa.c \
network/inet_pton.c \
network/inet_aton.c \
network/in6addr_any.c \
network/in6addr_loopback.c \
network/proto.c \
fenv/fenv.c \
fenv/fesetround.c \
fenv/feupdateenv.c \
fenv/fesetexceptflag.c \
fenv/fegetexceptflag.c \
fenv/feholdexcept.c \
exit/exit.c \
exit/atexit.c \
exit/assert.c \
exit/quick_exit.c \
exit/at_quick_exit.c \
time/strftime.c \
time/asctime.c \
time/asctime_r.c \
time/ctime.c \
time/ctime_r.c \
time/wcsftime.c \
time/strptime.c \
time/difftime.c \
time/timegm.c \
time/ftime.c \
time/times.c \
time/gmtime.c \
time/gmtime_r.c \
time/timespec_get.c \
time/getdate.c \
time/localtime.c \
time/localtime_r.c \
time/mktime.c \
time/gettimeofday.c \
time/__tm_to_secs.c \
time/__month_to_secs.c \
time/__secs_to_tm.c \
time/__year_to_secs.c \
time/__tz.c \
fcntl/creat.c \
dirent/alphasort.c \
dirent/versionsort.c \
env/__stack_chk_fail.c \
env/clearenv.c \
env/getenv.c \
env/putenv.c \
env/setenv.c \
env/unsetenv.c \
unistd/posix_close.c \
unistd/tcgetpgrp.c \
unistd/tcsetpgrp.c \
unistd/getpgid.c \
unistd/getpgrp.c \
unistd/setpgid.c \
unistd/setpgrp.c \
unistd/getsid.c \
unistd/setsid.c \
unistd/gethostname.c \
unistd/alarm.c \
unistd/ualarm.c \
unistd/ttyname.c \
unistd/ttyname_r.c \
linux/wait3.c \
linux/wait4.c \
linux/epoll.c \
linux/eventfd.c \
linux/setgroups.c \
stat/futimesat.c \
legacy/getpagesize.c \
thread/thrd_sleep.c \
) \
$(filter-out %/procfdname.c %/syscall.c %/syscall_ret.c %/vdso.c %/version.c, \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/internal/*.c)) \
$(filter-out %/rename.c \
%/tmpnam.c %/tempnam.c \
%/remove.c \
%/gets.c, \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/stdio/*.c)) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/string/*.c) \
$(filter-out %/bind_textdomain_codeset.c, \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/locale/*.c)) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/stdlib/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/setjmp/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/thread/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/signal/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/process/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/env/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/exit/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/search/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/multibyte/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/regex/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/prng/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/conf/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/passwd/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/ctype/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/termios/*.c) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/temp/*.c) \
$(filter-out %/__signbit.c %/__signbitf.c %/__signbitl.c \
%/__fpclassify.c %/__fpclassifyf.c %/__fpclassifyl.c \
%/ceilf.c %/ceil.c \
%/floorf.c %/floor.c \
%/truncf.c %/trunc.c \
%/rintf.c %/rint.c \
%/nearbyintf.c %/nearbyint.c \
%/sqrtf.c %/sqrt.c \
%/fabsf.c %/fabs.c \
%/copysignf.c %/copysign.c \
%/fminf.c %/fmaxf.c \
%/fmin.c %/fmax.c, \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/math/*.c)) \
$(filter-out %/crealf.c %/creal.c %creall.c \
%/cimagf.c %/cimag.c %cimagl.c, \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/complex/*.c)) \
$(wildcard $(LIBC_TOP_HALF_MUSL_SRC_DIR)/crypt/*.c)
ifeq ($(THREAD_MODEL), posix)
LIBC_TOP_HALF_MUSL_SOURCES += \
$(addprefix $(LIBC_TOP_HALF_MUSL_SRC_DIR)/, \
env/__init_tls.c \
stdio/__lockfile.c \
stdio/flockfile.c \
stdio/ftrylockfile.c \
stdio/funlockfile.c \
thread/__lock.c \
thread/__wait.c \
thread/__timedwait.c \
thread/default_attr.c \
thread/pthread_attr_destroy.c \
thread/pthread_attr_get.c \
thread/pthread_attr_init.c \
thread/pthread_attr_setstack.c \
thread/pthread_attr_setdetachstate.c \
thread/pthread_attr_setstacksize.c \
thread/pthread_barrier_destroy.c \
thread/pthread_barrier_init.c \
thread/pthread_barrier_wait.c \
thread/pthread_cleanup_push.c \
thread/pthread_cond_broadcast.c \
thread/pthread_cond_destroy.c \
thread/pthread_cond_init.c \
thread/pthread_cond_signal.c \
thread/pthread_cond_timedwait.c \
thread/pthread_cond_wait.c \
thread/pthread_condattr_destroy.c \
thread/pthread_condattr_init.c \
thread/pthread_condattr_setclock.c \
thread/pthread_condattr_setpshared.c \
thread/pthread_create.c \
thread/pthread_detach.c \
thread/pthread_equal.c \
thread/pthread_getspecific.c \
thread/pthread_join.c \
thread/pthread_key_create.c \
thread/pthread_mutex_consistent.c \
thread/pthread_mutex_destroy.c \
thread/pthread_mutex_init.c \
thread/pthread_mutex_getprioceiling.c \
thread/pthread_mutex_lock.c \
thread/pthread_mutex_timedlock.c \
thread/pthread_mutex_trylock.c \
thread/pthread_mutex_unlock.c \
thread/pthread_mutexattr_destroy.c \
thread/pthread_mutexattr_init.c \
thread/pthread_mutexattr_setprotocol.c \
thread/pthread_mutexattr_setpshared.c \
thread/pthread_mutexattr_setrobust.c \
thread/pthread_mutexattr_settype.c \
thread/pthread_once.c \
thread/pthread_rwlock_destroy.c \
thread/pthread_rwlock_init.c \
thread/pthread_rwlock_rdlock.c \
thread/pthread_rwlock_timedrdlock.c \
thread/pthread_rwlock_timedwrlock.c \
thread/pthread_rwlock_tryrdlock.c \
thread/pthread_rwlock_trywrlock.c \
thread/pthread_rwlock_unlock.c \
thread/pthread_rwlock_wrlock.c \
thread/pthread_rwlockattr_destroy.c \
thread/pthread_rwlockattr_init.c \
thread/pthread_rwlockattr_setpshared.c \
thread/pthread_setcancelstate.c \
thread/pthread_setspecific.c \
thread/pthread_self.c \
thread/pthread_spin_destroy.c \
thread/pthread_spin_init.c \
thread/pthread_spin_lock.c \
thread/pthread_spin_trylock.c \
thread/pthread_spin_unlock.c \
thread/pthread_testcancel.c \
thread/sem_destroy.c \
thread/sem_getvalue.c \
thread/sem_init.c \
thread/sem_post.c \
thread/sem_timedwait.c \
thread/sem_trywait.c \
thread/sem_wait.c \
thread/$(TARGET_ARCH)/wasi_thread_start.s \
)
endif
MUSL_PRINTSCAN_SOURCES = \
$(LIBC_TOP_HALF_MUSL_SRC_DIR)/internal/floatscan.c \
$(LIBC_TOP_HALF_MUSL_SRC_DIR)/stdio/vfprintf.c \
$(LIBC_TOP_HALF_MUSL_SRC_DIR)/stdio/vfwprintf.c \
$(LIBC_TOP_HALF_MUSL_SRC_DIR)/stdio/vfscanf.c \
$(LIBC_TOP_HALF_MUSL_SRC_DIR)/stdlib/strtod.c \
$(LIBC_TOP_HALF_MUSL_SRC_DIR)/stdlib/wcstod.c
BULK_MEMORY_SOURCES = \
$(LIBC_TOP_HALF_MUSL_SRC_DIR)/string/memcpy.c \
$(LIBC_TOP_HALF_MUSL_SRC_DIR)/string/memmove.c \
$(LIBC_TOP_HALF_MUSL_SRC_DIR)/string/memset.c
LIBC_TOP_HALF_HEADERS_PRIVATE = $(LIBC_TOP_HALF_DIR)/headers/private
LIBC_TOP_HALF_SOURCES = $(LIBC_TOP_HALF_DIR)/sources
LIBC_TOP_HALF_ALL_SOURCES = \
$(LIBC_TOP_HALF_MUSL_SOURCES) \
$(sort $(shell find $(LIBC_TOP_HALF_SOURCES) -name \*.[cs]))
# Add any extra flags
CFLAGS = $(EXTRA_CFLAGS)
# Set the target.
CFLAGS += --target=$(TARGET_TRIPLE)
ASMFLAGS += --target=$(TARGET_TRIPLE)
# WebAssembly floating-point match doesn't trap.
# TODO: Add -fno-signaling-nans when the compiler supports it.
CFLAGS += -fno-trapping-math
# Add all warnings, but disable a few which occur in third-party code.
CFLAGS += -Wall -Wextra -Werror \
-Wno-null-pointer-arithmetic \
-Wno-unused-parameter \
-Wno-sign-compare \
-Wno-unused-variable \
-Wno-unused-function \
-Wno-ignored-attributes \
-Wno-missing-braces \
-Wno-ignored-pragmas \
-Wno-unused-but-set-variable \
-Wno-unknown-warning-option
# Configure support for threads.
ifeq ($(THREAD_MODEL), single)
CFLAGS += -mthread-model single
endif
ifeq ($(THREAD_MODEL), posix)
# Specify the tls-model until LLVM 15 is released (which should contain
# https://reviews.llvm.org/D130053).
CFLAGS += -mthread-model posix -pthread -ftls-model=local-exec
# Include cloudlib's directory to access the structure definition of clockid_t
CFLAGS += -I$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC)
endif
# Expose the public headers to the implementation. We use `-isystem` for
# purpose for two reasons:
#
# 1. It only does `<...>` not `"...."` lookup. We are making a libc,
# which is a system library, so all public headers should be
# accessible via `<...>` and never also need `"..."`. `-isystem` main
# purpose is to only effect `<...>` lookup.
#
# 2. The `-I` for private headers added for specific C files below
# should come earlier in the search path, so they can "override"
# and/or `#include_next` the public headers. `-isystem` (like
# `-idirafter`) comes later in the search path than `-I`.
CFLAGS += -isystem "$(SYSROOT_INC)"
# These variables describe the locations of various files and directories in
# the build tree.
objs = $(patsubst %.c,$(OBJDIR)/%.o,$(1))
asmobjs = $(patsubst %.s,$(OBJDIR)/%.o,$(1))
DLMALLOC_OBJS = $(call objs,$(DLMALLOC_SOURCES))
EMMALLOC_OBJS = $(call objs,$(EMMALLOC_SOURCES))
LIBC_BOTTOM_HALF_ALL_OBJS = $(call objs,$(LIBC_BOTTOM_HALF_ALL_SOURCES))
LIBC_TOP_HALF_ALL_OBJS = $(call asmobjs,$(call objs,$(LIBC_TOP_HALF_ALL_SOURCES)))
ifeq ($(MALLOC_IMPL),dlmalloc)
LIBC_OBJS += $(DLMALLOC_OBJS)
else ifeq ($(MALLOC_IMPL),emmalloc)
LIBC_OBJS += $(EMMALLOC_OBJS)
else ifeq ($(MALLOC_IMPL),none)
# No object files to add.
else
$(error unknown malloc implementation $(MALLOC_IMPL))
endif
# Add libc-bottom-half's objects.
LIBC_OBJS += $(LIBC_BOTTOM_HALF_ALL_OBJS)
ifeq ($(BUILD_LIBC_TOP_HALF),yes)
# libc-top-half is musl.
LIBC_OBJS += $(LIBC_TOP_HALF_ALL_OBJS)
endif
MUSL_PRINTSCAN_OBJS = $(call objs,$(MUSL_PRINTSCAN_SOURCES))
MUSL_PRINTSCAN_LONG_DOUBLE_OBJS = $(patsubst %.o,%.long-double.o,$(MUSL_PRINTSCAN_OBJS))
MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS = $(patsubst %.o,%.no-floating-point.o,$(MUSL_PRINTSCAN_OBJS))
BULK_MEMORY_OBJS = $(call objs,$(BULK_MEMORY_SOURCES))
LIBWASI_EMULATED_MMAN_OBJS = $(call objs,$(LIBWASI_EMULATED_MMAN_SOURCES))
LIBWASI_EMULATED_PROCESS_CLOCKS_OBJS = $(call objs,$(LIBWASI_EMULATED_PROCESS_CLOCKS_SOURCES))
LIBWASI_EMULATED_GETPID_OBJS = $(call objs,$(LIBWASI_EMULATED_GETPID_SOURCES))
LIBWASI_EMULATED_SIGNAL_OBJS = $(call objs,$(LIBWASI_EMULATED_SIGNAL_SOURCES))
LIBC_BOTTOM_HALF_CRT_OBJS = $(call objs,$(LIBC_BOTTOM_HALF_CRT_SOURCES))
# These variables describe the locations of various files and
# directories in the generated sysroot tree.
SYSROOT_LIB := $(SYSROOT)/lib/$(TARGET_TRIPLE)
SYSROOT_INC = $(SYSROOT)/include
SYSROOT_SHARE = $(SYSROOT)/share/$(TARGET_TRIPLE)
# Files from musl's include directory that we don't want to install in the
# sysroot's include directory.
MUSL_OMIT_HEADERS :=
# Remove files which aren't headers (we generate alltypes.h below).
MUSL_OMIT_HEADERS += \
"bits/syscall.h.in" \
"bits/alltypes.h.in" \
"alltypes.h.in"
# Use the compiler's version of these headers.
MUSL_OMIT_HEADERS += \
"stdarg.h" \
"stddef.h"
# Use the WASI errno definitions.
MUSL_OMIT_HEADERS += \
"bits/errno.h"
# Remove headers that aren't supported yet or that aren't relevant for WASI.
MUSL_OMIT_HEADERS += \
"sys/procfs.h" \
"sys/user.h" \
"sys/kd.h" "sys/vt.h" "sys/soundcard.h" "sys/sem.h" \
"sys/shm.h" "sys/msg.h" "sys/ipc.h" "sys/ptrace.h" \
"sys/statfs.h" \
"bits/kd.h" "bits/vt.h" "bits/soundcard.h" "bits/sem.h" \
"bits/shm.h" "bits/msg.h" "bits/ipc.h" "bits/ptrace.h" \
"bits/statfs.h" \
"sys/vfs.h" \
"sys/statvfs.h" \
"sys/syslog.h" \
"ucontext.h" "sys/ucontext.h" \
"utmp.h" "utmpx.h" \
"lastlog.h" \
"sys/acct.h" \
"sys/cachectl.h" \
"sys/reboot.h" "sys/swap.h" \
"sys/inotify.h" \
"sys/quota.h" \
"sys/klog.h" \
"sys/fsuid.h" \
"sys/io.h" \
"sys/prctl.h" \
"sys/mtio.h" \
"sys/mount.h" \
"sys/fanotify.h" \
"sys/personality.h" \
"link.h" "bits/link.h" \
"scsi/scsi.h" "scsi/scsi_ioctl.h" "scsi/sg.h" \
"sys/auxv.h" \
"mntent.h" \
"resolv.h" \
"pty.h" \
"dlfcn.h" \
"ulimit.h" \
"sys/xattr.h" \
"wordexp.h" \
"sys/membarrier.h" \
"sys/signalfd.h" \
"sys/termios.h" \
"net/if_arp.h" \
"net/ethernet.h" \
"net/route.h" \
"netinet/if_ether.h" \
"netinet/ether.h" \
"sys/timerfd.h" \
"sys/sysmacros.h" \
"aio.h"
ifeq ($(THREAD_MODEL), single)
# Remove headers not supported in single-threaded mode.
MUSL_OMIT_HEADERS += "pthread.h"
endif
default: finish post-finish
wasix-headers:
git submodule init
git submodule update
cargo run --manifest-path tools/wasix-headers/Cargo.toml generate-libc
post-finish: finish
ifeq ($(TARGET_TRIPLE), wasm32-wasi)
cd $(SYSROOT)/lib/$(TARGET_TRIPLE) && \
mv libc.a libc-old.a && \
$(AR) -M < ../../../tools/append-builtins/$(TARGET_TRIPLE).mri && \
rm libc-old.a
endif
rm -f sysroot/lib/wasm32-wasi/libc-printscan-log-double.a
rsync -rtvu --delete ./sysroot/ ./sysroot32/
$(SYSROOT_LIB)/libc.a: $(LIBC_OBJS)
$(SYSROOT_LIB)/libc-printscan-long-double.a: $(MUSL_PRINTSCAN_LONG_DOUBLE_OBJS)
$(SYSROOT_LIB)/libc-printscan-no-floating-point.a: $(MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS)
$(SYSROOT_LIB)/libwasi-emulated-mman.a: $(LIBWASI_EMULATED_MMAN_OBJS)
$(SYSROOT_LIB)/libwasi-emulated-process-clocks.a: $(LIBWASI_EMULATED_PROCESS_CLOCKS_OBJS)
$(SYSROOT_LIB)/libwasi-emulated-getpid.a: $(LIBWASI_EMULATED_GETPID_OBJS)
%.a:
@mkdir -p "$(@D)"
# On Windows, the commandline for the ar invocation got too long, so it needs to be split up.
$(AR) crs $@ $(wordlist 1, 199, $(sort $^))
$(AR) crs $@ $(wordlist 200, 399, $(sort $^))
$(AR) crs $@ $(wordlist 400, 599, $(sort $^))
$(AR) crs $@ $(wordlist 600, 799, $(sort $^))
# This might eventually overflow again, but at least it'll do so in a loud way instead of
# silently dropping the tail.
$(AR) crs $@ $(wordlist 800, 100000, $(sort $^))
$(MUSL_PRINTSCAN_OBJS): CFLAGS += \
-D__wasilibc_printscan_full_support_option="\"add -lc-printscan-long-double to the link command\""
$(MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS): CFLAGS += \
-D__wasilibc_printscan_floating_point_support_option="\"remove -lc-printscan-no-floating-point from the link command\""
# TODO: apply -mbulk-memory globally, once
# https://github.com/llvm/llvm-project/issues/52618 is resolved
$(BULK_MEMORY_OBJS): CFLAGS += \
-mbulk-memory
$(BULK_MEMORY_OBJS): CFLAGS += \
-DBULK_MEMORY_THRESHOLD=$(BULK_MEMORY_THRESHOLD)
$(OBJDIR)/%.long-double.o: %.c include_dirs
@mkdir -p "$(@D)"
$(CC) $(CFLAGS) -MD -MP -o $@ -c $<
$(OBJDIR)/%.no-floating-point.o: %.c include_dirs
@mkdir -p "$(@D)"
$(CC) $(CFLAGS) -MD -MP -o $@ -c $<
$(OBJDIR)/%.o: %.c include_dirs
@mkdir -p "$(@D)"
$(CC) $(CFLAGS) -MD -MP -o $@ -c $<
$(OBJDIR)/%.o: %.s include_dirs
@mkdir -p "$(@D)"
$(CC) $(ASMFLAGS) -o $@ -c $<
-include $(shell find $(OBJDIR) -name \*.d)
$(DLMALLOC_OBJS): CFLAGS += \
-I$(DLMALLOC_INC)
startup_files $(LIBC_BOTTOM_HALF_ALL_OBJS): CFLAGS += \
-I$(LIBC_BOTTOM_HALF_HEADERS_PRIVATE) \
-I$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC_INC) \
-I$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC) \
-I$(LIBC_TOP_HALF_MUSL_SRC_DIR)/include \
-I$(LIBC_TOP_HALF_MUSL_SRC_DIR)/internal
$(LIBC_TOP_HALF_ALL_OBJS) $(MUSL_PRINTSCAN_LONG_DOUBLE_OBJS) $(MUSL_PRINTSCAN_NO_FLOATING_POINT_OBJS): CFLAGS += \
-I$(LIBC_TOP_HALF_MUSL_SRC_DIR)/include \
-I$(LIBC_TOP_HALF_MUSL_SRC_DIR)/internal \
-I$(LIBC_TOP_HALF_MUSL_DIR)/arch/$(TARGET_ARCH) \
-I$(LIBC_TOP_HALF_MUSL_DIR)/arch/generic \
-I$(LIBC_TOP_HALF_HEADERS_PRIVATE) \
-Wno-parentheses \
-Wno-shift-op-parentheses \
-Wno-bitwise-op-parentheses \
-Wno-logical-op-parentheses \
-Wno-string-plus-int \
-Wno-dangling-else \
-Wno-unknown-pragmas
$(LIBWASI_EMULATED_PROCESS_CLOCKS_OBJS): CFLAGS += \
-I$(LIBC_BOTTOM_HALF_CLOUDLIBC_SRC)
include_dirs:
#
# Install the include files.
#
mkdir -p "$(SYSROOT_INC)"
cp -r "$(LIBC_BOTTOM_HALF_HEADERS_PUBLIC)"/* "$(SYSROOT_INC)"
# Generate musl's bits/alltypes.h header.
mkdir -p "$(SYSROOT_INC)/bits"
sed -f $(LIBC_TOP_HALF_MUSL_DIR)/tools/mkalltypes.sed \
$(LIBC_TOP_HALF_MUSL_DIR)/arch/$(TARGET_ARCH)/bits/alltypes.h.in \
$(LIBC_TOP_HALF_MUSL_DIR)/include/alltypes.h.in \
> "$(SYSROOT_INC)/bits/alltypes.h"
# Copy in the bulk of musl's public header files.
cp -r "$(LIBC_TOP_HALF_MUSL_INC)"/* "$(SYSROOT_INC)"
# Copy in the musl's "bits" header files.
cp -r "$(LIBC_TOP_HALF_MUSL_DIR)"/arch/generic/bits/* "$(SYSROOT_INC)/bits"
cp -r "$(LIBC_TOP_HALF_MUSL_DIR)"/arch/$(TARGET_ARCH)/bits/* "$(SYSROOT_INC)/bits"
# Remove selected header files.
$(RM) $(patsubst %,$(SYSROOT_INC)/%,$(MUSL_OMIT_HEADERS))
startup_files: include_dirs $(LIBC_BOTTOM_HALF_CRT_OBJS)
#
# Install the startup files (crt1.o etc).
#
mkdir -p "$(SYSROOT_LIB)" && \
cp $(LIBC_BOTTOM_HALF_CRT_OBJS) "$(SYSROOT_LIB)"
libc: include_dirs \
$(SYSROOT_LIB)/libc.a \
$(SYSROOT_LIB)/libc-printscan-long-double.a \
$(SYSROOT_LIB)/libc-printscan-no-floating-point.a \
$(SYSROOT_LIB)/libwasi-emulated-mman.a \
$(SYSROOT_LIB)/libwasi-emulated-process-clocks.a \
$(SYSROOT_LIB)/libwasi-emulated-getpid.a
finish: startup_files libc
#
# Create empty placeholder libraries.
#
for name in m rt pthread crypt util xnet resolv dl; do \
$(AR) crs "$(SYSROOT_LIB)/lib$${name}.a"; \
done
#
# The build succeeded! The generated sysroot is in $(SYSROOT).
#
# The check for defined and undefined symbols expects there to be a heap
# alloctor (providing malloc, calloc, free, etc). Skip this step if the build
# is done without a malloc implementation.
ifneq ($(MALLOC_IMPL),none)
finish: check-symbols
endif
DEFINED_SYMBOLS = $(SYSROOT_SHARE)/defined-symbols.txt
UNDEFINED_SYMBOLS = $(SYSROOT_SHARE)/undefined-symbols.txt
check-symbols: startup_files libc
#
# Collect metadata on the sysroot and perform sanity checks.
#
mkdir -p "$(SYSROOT_SHARE)"
#
# Collect symbol information.
#
@# TODO: Use llvm-nm --extern-only instead of grep. This is blocked on
@# LLVM PR40497, which is fixed in 9.0, but not in 8.0.
@# Ignore certain llvm builtin symbols such as those starting with __mul
@# since these dependencies can vary between llvm versions.
"$(NM)" --defined-only "$(SYSROOT_LIB)"/libc.a "$(SYSROOT_LIB)"/libwasi-emulated-*.a "$(SYSROOT_LIB)"/*.o \
|grep ' [[:upper:]] ' |sed 's/.* [[:upper:]] //' |LC_ALL=C sort |uniq > "$(DEFINED_SYMBOLS)"
for undef_sym in $$("$(NM)" --undefined-only "$(SYSROOT_LIB)"/libc.a "$(SYSROOT_LIB)"/libc-*.a "$(SYSROOT_LIB)"/*.o \
|grep ' U ' |sed 's/.* U //' |LC_ALL=C sort |uniq); do \
grep -q '\<'$$undef_sym'\>' "$(DEFINED_SYMBOLS)" || echo $$undef_sym; \
done | grep -v "^__mul" > "$(UNDEFINED_SYMBOLS)"
grep '^_*imported_$(TARGET_OS)_' "$(UNDEFINED_SYMBOLS)" \
> "$(SYSROOT_LIB)/libc.imports"
#
# Generate a test file that includes all public C header files.
#
cd "$(SYSROOT_INC)" && \
for header in $$(find . -type f -not -name mman.h -not -name signal.h -not -name times.h -not -name resource.h |grep -v /bits/ |grep -v /c++/); do \
echo '#include <'$$header'>' | sed 's/\.\///' ; \
done |LC_ALL=C sort >$(SYSROOT_SHARE)/include-all.c ; \
cd - >/dev/null
#
# Test that it compiles.
#
$(CC) $(CFLAGS) -fsyntax-only "$(SYSROOT_SHARE)/include-all.c" -Wno-\#warnings
#
# Collect all the predefined macros, except for compiler version macros
# which we don't need to track here.
#
@#
@# For the __*_ATOMIC_*_LOCK_FREE macros, squash individual compiler names
@# to attempt, toward keeping these files compiler-independent.
@#
@# We have to add `-isystem $(SYSROOT_INC)` because otherwise clang puts
@# its builtin include path first, which produces compiler-specific
@# output.
@#
@# TODO: Filter out __NO_MATH_ERRNO_ and a few __*WIDTH__ that are new to clang 14.
@# TODO: Filter out __GCC_HAVE_SYNC_COMPARE_AND_SWAP_* that are new to clang 16.
@# TODO: clang defined __FLT_EVAL_METHOD__ until clang 15, so we force-undefine it
@# for older versions.
@# TODO: Undefine __wasm_mutable_globals__ and __wasm_sign_ext__, that are new to
@# clang 16 for -mcpu=generic.
@# TODO: As of clang 16, __GNUC_VA_LIST is #defined without a value.
$(CC) $(CFLAGS) "$(SYSROOT_SHARE)/include-all.c" \
-isystem $(SYSROOT_INC) \
-std=gnu17 \
-E -dM -Wno-\#warnings \
-D_ALL_SOURCE \
-U__llvm__ \
-U__clang__ \
-U__clang_major__ \
-U__clang_minor__ \
-U__clang_patchlevel__ \
-U__clang_version__ \
-U__clang_literal_encoding__ \
-U__clang_wide_literal_encoding__ \
-U__wasm_mutable_globals__ \
-U__wasm_sign_ext__ \
-U__GNUC__ \
-U__GNUC_MINOR__ \
-U__GNUC_PATCHLEVEL__ \
-U__VERSION__ \
-U__NO_MATH_ERRNO__ \
-U__BITINT_MAXWIDTH__ \
-U__FLT_EVAL_METHOD__ -Wno-builtin-macro-redefined \
| sed -e 's/__[[:upper:][:digit:]]*_ATOMIC_\([[:upper:][:digit:]_]*\)_LOCK_FREE/__compiler_ATOMIC_\1_LOCK_FREE/' \
| sed -e 's/__GNUC_VA_LIST $$/__GNUC_VA_LIST 1/' \
| grep -v '^#define __\(BOOL\|INT_\(LEAST\|FAST\)\(8\|16\|32\|64\)\|INT\|LONG\|LLONG\|SHRT\)_WIDTH__' \
| grep -v '^#define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_\(1\|2\|4\|8\)' \
> "$(SYSROOT_SHARE)/predefined-macros.txt"
# Check that the computed metadata matches the expected metadata.
# This ignores whitespace because on Windows the output has CRLF line endings.
diff -wur "expected/$(TARGET_TRIPLE)" "$(SYSROOT_SHARE)"
install: finish
mkdir -p "$(INSTALL_DIR)"
cp -r "$(SYSROOT)/lib" "$(SYSROOT)/share" "$(SYSROOT)/include" "$(INSTALL_DIR)"
clean:
$(RM) -r "$(OBJDIR)"
$(RM) -r "$(SYSROOT)"
$(RM) -r "$(SYSROOT)32"
$(RM) -r "$(SYSROOT)64"
.PHONY: default startup_files libc finish install include_dirs clean