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|
#
# Kbuild file for klibc
#
# Tell that we are building klibc
export klibc-build := y
# Generate syscall stubs
klib-y += syscalls/
# Generate socket calls stubs
klib-y += socketcalls/
# zlib, if configured
klib-$(CONFIG_KLIBC_ZLIB) += zlib/
# arch specific .o files
klib-y += arch/$(KLIBCARCHDIR)/
klib-y += vsnprintf.o snprintf.o vsprintf.o sprintf.o \
asprintf.o vasprintf.o \
vsscanf.o sscanf.o ctypes.o \
strntoumax.o strntoimax.o \
atoi.o atol.o atoll.o \
strtol.o strtoll.o strtoul.o strtoull.o \
strtoimax.o strtoumax.o \
globals.o exit.o atexit.o onexit.o \
execl.o execle.o execv.o execvpe.o execvp.o execlp.o execlpe.o \
fork.o vfork.o wait.o wait3.o waitpid.o system.o \
setpgrp.o getpgrp.o daemon.o \
printf.o vprintf.o fprintf.o vfprintf.o perror.o \
statfs.o fstatfs.o umount.o \
creat.o open.o openat.o \
fread2.o fwrite2.o fgets.o fputc.o fputs.o puts.o putchar.o \
clock_nanosleep.o nanosleep.o sleep.o usleep.o \
strtotimespec.o strtotimeval.o \
raise.o abort.o assert.o alarm.o pause.o \
__signal.o sysv_signal.o bsd_signal.o siglist.o sigabbrev.o \
siglongjmp.o \
sigaction.o sigpending.o sigprocmask.o sigsuspend.o \
pselect.o ppoll.o \
pread.o pwrite.o \
brk.o sbrk.o malloc.o realloc.o zalloc.o calloc.o \
mmap.o shm_open.o shm_unlink.o \
memcpy.o memcmp.o memset.o memccpy.o memmem.o memswap.o \
memmove.o memchr.o memrchr.o bzero.o \
strcasecmp.o strncasecmp.o strndup.o strerror.o strsignal.o \
strcat.o strchr.o strcmp.o strcpy.o strdup.o strlen.o strnlen.o \
strncat.o strlcpy.o strlcat.o \
strstr.o strncmp.o strncpy.o strrchr.o \
strxspn.o strspn.o strcspn.o strpbrk.o strsep.o strtok.o \
strtok_r.o \
fnmatch.o \
gethostname.o getdomainname.o getcwd.o \
seteuid.o setegid.o \
getenv.o setenv.o putenv.o __put_env.o unsetenv.o \
clearenv.o nullenv.o \
getopt.o getopt_long.o readdir.o scandir.o alphasort.o remove.o \
syslog.o closelog.o pty.o isatty.o reboot.o \
gettimeofday.o settimeofday.o time.o \
lseek.o nice.o getpriority.o \
futimesat.o utime.o utimes.o \
qsort.o bsearch.o \
lrand48.o jrand48.o mrand48.o nrand48.o srand48.o seed48.o \
inet/inet_ntoa.o inet/inet_aton.o inet/inet_addr.o \
inet/inet_ntop.o inet/inet_pton.o inet/bindresvport.o \
accept.o send.o recv.o \
access.o chmod.o chown.o dup2.o mknod.o poll.o rename.o renameat.o \
fstat.o fstatat.o lstat.o stat.o \
lchown.o link.o rmdir.o unlink.o mkdir.o \
readlink.o realpath.o select.o symlink.o pipe.o \
ctype/isalnum.o ctype/isalpha.o ctype/isascii.o \
ctype/isblank.o ctype/iscntrl.o ctype/isdigit.o \
ctype/isgraph.o ctype/islower.o ctype/isprint.o \
ctype/ispunct.o ctype/isspace.o ctype/isupper.o \
ctype/isxdigit.o ctype/tolower.o ctype/toupper.o \
userdb/getgrgid.o userdb/getgrnam.o userdb/getpwnam.o \
userdb/getpwuid.o userdb/root_group.o userdb/root_user.o \
setmntent.o endmntent.o getmntent.o \
stdio/fclose.o stdio/fopen.o stdio/fdopen.o \
stdio/fread.o stdio/fwrite.o stdio/fflush.o \
stdio/ungetc.o stdio/fgetc.o \
stdio/fseek.o stdio/ftell.o stdio/rewind.o \
stdio/fileno.o stdio/feof.o stdio/ferror.o stdio/clearerr.o \
sysconf/sysconf.o
klib-$(CONFIG_KLIBC_ERRLIST) += errlist.o
ifeq ($(CONFIG_KLIBC_ERRLIST),y)
KLIBCCFLAGS_strerror.o += -DWITH_ERRLIST
endif
# These pass a huge maximum length to the corresponding length-limiting
# functions
KLIBCCFLAGS_sprintf.o += $(call cc-option,-Wno-format-truncation, )
KLIBCCFLAGS_vsprintf.o += $(call cc-option,-Wno-format-truncation, )
# Clang 14 optimises zalloc() to recursively call calloc(), without
# this option
KLIBCCFLAGS_zalloc.o += $(call cc-option,-fno-builtin-malloc, )
# sigsuspend.c includes <klibc/havesyscall.h> generated by syscalls/
# build, so require that to build first
$(obj)/sigsuspend.o: $(obj)/syscalls/klib.list
#####
# Shared definitions
LIBC := libc.a
SOLIB := libc.so
SOHASH := klibc.so
CRT0 := arch/$(KLIBCARCHDIR)/crt0.o
SHARED_STUB := shared-stub.o
always := $(LIBC)
ifdef KLIBCSHAREDFLAGS
always += $(SOLIB) $(SOHASH) $(SHARED_STUB)
endif
LIBC := $(call objectify,$(LIBC))
SOLIB := $(call objectify,$(SOLIB))
SOHASH := $(call objectify,$(SOHASH))
CRT0 := $(call objectify,$(CRT0))
SHARED_STUB := $(call objectify,$(SHARED_STUB))
SOLIBHASH = $(shell cat $(SOLIB).hash)
#####
# Readable errormessages extracted from src..
targets += errlist.c
quiet_cmd_errlist = GEN $@
cmd_errlist = $(PERL) $< $(call flags,KLIBCCPPFLAGS) -errlist > $@ \
|| rm -f $@
$(obj)/errlist.c: $(srctree)/$(src)/makeerrlist.pl
$(call cmd,errlist)
# all .o files for all dirs
klib-o-files = $(shell cat $(obj)/klib.list \
$(addsuffix /klib.list, $(klib-dirs)))
######
# Build static library: libc.a
targets += libc.a __static_init.o
quiet_cmd_libc = KLIBCAR $@
cmd_libc = rm -f $@; \
$(KLIBCAR) Dcq $@ \
$(call objectify,__static_init.o) $(klib-o-files); \
$(KLIBCRANLIB) $@
$(LIBC): $(call objectify,__static_init.o) $(obj)/klib.list FORCE
$(call if_changed,libc)
######
# Build shared library
targets += libc.so __shared_init.o
quiet_cmd_libcso = KLIBCLD $@
cmd_libcso = $(KLIBCLD) $(KLIBCLDFLAGS) $(KLIBCSHAREDFLAGS) -o $@ \
--start-group \
$(CRT0) \
$(call objectify,__shared_init.o) \
$(klib-o-files) \
$(KLIBCLIBGCC) \
--end-group
$(SOLIB): $(call objectify,__shared_init.o) $(obj)/klib.list FORCE
$(call if_changed,libcso)
#####
# Build sha1 hash values
targets += klibc.so libc.so.hash
hostprogs-y := sha1hash
clean-files += klibc-???????????????????????????.so
quiet_cmd_solibhash = HASH $@
cmd_solibhash = $(KLIBCNM) $< | egrep '^[0-9a-fA-F]+ [ADRTW] ' | \
sort | $(obj)/sha1hash > $@
$(SOLIB).hash: $(SOLIB) $(obj)/sha1hash FORCE
$(call if_changed,solibhash)
quiet_cmd_sohash = GEN $@
cmd_sohash = cat $< > $@; \
$(KLIBCSTRIP) $(KLIBCSTRIPFLAGS) $@; \
chmod a+x $@; \
rm -f $(obj)/klibc-???????????????????????????.so; \
ln -f $@ $(obj)/klibc-$(SOLIBHASH).so
$(SOHASH): $(SOLIB) $(SOLIB).hash
$(call cmd,sohash)
#####
# build shared-stub.o
targets += shared-stub.o
quiet_cmd_interp = BUILD $@
cmd_interp = $(KLIBCCC) $(klibccflags) -D__ASSEMBLY__ \
-DLIBDIR=\"$(SHLIBDIR)\" \
-DSOHASH=\"$(SOLIBHASH)\" \
-c -o $@ $<
$(SHARED_STUB): $(obj)/shared-stub.S $(SOLIB).hash
$(call if_changed,interp)
#####
# Install klibc
install-rule:
@echo " INSTALL klibc to $(INSTALLROOT)$(INSTALLDIR)/$(KLIBCCROSS)lib"
$(Q)$(foreach f, $(LIBC) $(CRT0), \
$(shell $(install-data) $(f) \
$(INSTALLROOT)$(INSTALLDIR)/$(KLIBCCROSS)lib))
ifdef KLIBCSHAREDFLAGS
$(Q)$(foreach f, $(SOLIB) $(SHARED_STUB), \
$(shell $(install-data) $(f) \
$(INSTALLROOT)$(INSTALLDIR)/$(KLIBCCROSS)lib))
$(Q)$(install-lib) $(obj)/klibc-$(SOLIBHASH).so \
$(INSTALLROOT)$(INSTALLDIR)/$(KLIBCCROSS)lib
$(Q)$(install-lib) $(obj)/klibc-$(SOLIBHASH).so \
$(INSTALLROOT)$(SHLIBDIR)
endif
# Directories to visit during clean and install
subdir- := arch/$(KLIBCARCHDIR)/
|
