mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
178 lines
6.3 KiB
Makefile
178 lines
6.3 KiB
Makefile
# Makefile for csu code for GNU C library.
|
|
# Copyright (C) 1995-2018 Free Software Foundation, Inc.
|
|
# This file is part of the GNU C Library.
|
|
|
|
# The GNU C Library is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU Lesser General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2.1 of the License, or (at your option) any later version.
|
|
|
|
# The GNU C Library is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# Lesser General Public License for more details.
|
|
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with the GNU C Library; if not, see
|
|
# <http://www.gnu.org/licenses/>.
|
|
|
|
# This directory contains the C startup code (that which calls main). This
|
|
# consists of the startfile, built from start.c and installed as crt0.o
|
|
# (traditionally) or crt1.o (for ELF). In ELF we also install crti.o and
|
|
# crtn.o, special "initializer" and "finalizer" files used in the link
|
|
# to make the .init and .fini sections work right.
|
|
|
|
subdir := csu
|
|
|
|
include ../Makeconfig
|
|
|
|
routines = init-first libc-start $(libc-init) sysdep version check_fds \
|
|
libc-tls elf-init dso_handle
|
|
aux = errno
|
|
elide-routines.os = libc-tls
|
|
static-only-routines = elf-init
|
|
csu-dummies = $(filter-out $(start-installed-name),crt1.o Mcrt1.o)
|
|
extra-objs = start.o \
|
|
$(start-installed-name) g$(start-installed-name) $(csu-dummies) \
|
|
S$(start-installed-name)
|
|
omit-deps = $(patsubst %.o,%,$(start-installed-name) g$(start-installed-name) \
|
|
b$(start-installed-name) $(csu-dummies) \
|
|
S$(start-installed-name) \
|
|
r$(start-installed-name) \
|
|
gr$(start-installed-name))
|
|
install-lib = $(start-installed-name) g$(start-installed-name) $(csu-dummies)
|
|
|
|
# No tests are allowed in the csu/ subdirectory because the startup
|
|
# code is compiled with special flags.
|
|
tests =
|
|
|
|
CFLAGS-.o += $(no-stack-protector)
|
|
CFLAGS-.op += $(no-stack-protector)
|
|
CFLAGS-.os += $(no-stack-protector)
|
|
|
|
ifeq (yes,$(build-shared))
|
|
extra-objs += S$(start-installed-name) gmon-start.os
|
|
ifneq ($(start-installed-name),$(static-start-installed-name))
|
|
extra-objs += gmon-start.o
|
|
endif
|
|
install-lib += S$(start-installed-name)
|
|
generated += start.os
|
|
else
|
|
extra-objs += gmon-start.o
|
|
endif
|
|
|
|
ifneq ($(start-installed-name),$(static-start-installed-name))
|
|
# FIXME: Only Hurd defines static-start-installed-name. Hurd needs to
|
|
# provide special rules to support static PIE.
|
|
extra-objs += $(static-start-installed-name) g$(static-start-installed-name)
|
|
omit-deps += $(patsubst %.o,%,$(static-start-installed-name) \
|
|
g$(static-start-installed-name))
|
|
install-lib += $(static-start-installed-name) g$(static-start-installed-name)
|
|
else
|
|
ifeq (yes,$(enable-static-pie))
|
|
extra-objs += r$(start-installed-name) gr$(start-installed-name)
|
|
install-lib += r$(start-installed-name) gr$(start-installed-name)
|
|
endif
|
|
endif
|
|
|
|
before-compile += $(objpfx)abi-tag.h
|
|
generated += abi-tag.h
|
|
|
|
# These are the special initializer/finalizer files. They are always the
|
|
# first and last file in the link. crti.o ... crtn.o define the global
|
|
# "functions" _init and _fini to run the .init and .fini sections.
|
|
crtstuff = crti crtn
|
|
|
|
install-lib += $(crtstuff:=.o)
|
|
extra-objs += $(crtstuff:=.o)
|
|
|
|
ifneq ($(multidir),.)
|
|
multilib-extra-objs = $(addprefix $(multidir)/, $(install-lib))
|
|
extra-objs += $(multilib-extra-objs)
|
|
endif
|
|
|
|
extra-objs += abi-note.o init.o static-reloc.o
|
|
ifeq (yes,$(build-shared))
|
|
extra-objs += static-reloc.os
|
|
endif
|
|
asm-CPPFLAGS += -I$(objpfx).
|
|
|
|
# Enable unwinding so backtrace unwinds to __libc_start_main
|
|
CFLAGS-libc-start.c += -funwind-tables
|
|
|
|
include ../Rules
|
|
|
|
# Make these in the lib pass so they're available in time to link things with.
|
|
subdir_lib: $(extra-objs:%=$(objpfx)%)
|
|
|
|
define link-relocatable
|
|
$(CC) -nostdlib -nostartfiles -r -o $@ $^
|
|
endef
|
|
|
|
ifndef start-installed-name-rule
|
|
# We link the ELF startfile along with a SHT_NOTE section indicating
|
|
# the kernel ABI the binaries linked with this library will require.
|
|
$(objpfx)$(start-installed-name): $(objpfx)start.o $(objpfx)abi-note.o \
|
|
$(objpfx)init.o $(objpfx)static-reloc.o
|
|
$(link-relocatable)
|
|
$(objpfx)r$(start-installed-name): $(objpfx)start.o $(objpfx)abi-note.o \
|
|
$(objpfx)init.o
|
|
$(link-relocatable)
|
|
$(objpfx)S$(start-installed-name): $(objpfx)start.os $(objpfx)abi-note.o \
|
|
$(objpfx)init.o
|
|
$(link-relocatable)
|
|
endif
|
|
|
|
# The profiling startfile is made by linking together the normal
|
|
# startfile with gmon-start.o, which defines a constructor function
|
|
# to turn on profiling code at startup.
|
|
ifeq (yes,$(build-shared))
|
|
$(objpfx)g$(start-installed-name): \
|
|
$(objpfx)g%: $(objpfx)S% $(objpfx)gmon-start.os $(objpfx)static-reloc.os
|
|
$(link-relocatable)
|
|
$(objpfx)gr$(start-installed-name): \
|
|
$(objpfx)gr%: $(objpfx)r% $(objpfx)gmon-start.o
|
|
$(link-relocatable)
|
|
ifneq ($(start-installed-name),$(static-start-installed-name))
|
|
$(objpfx)g$(static-start-installed-name): \
|
|
$(objpfx)g%: $(objpfx)% $(objpfx)gmon-start.o
|
|
$(link-relocatable)
|
|
endif
|
|
else
|
|
$(addprefix $(objpfx),$(sort g$(start-installed-name) \
|
|
g$(static-start-installed-name))): \
|
|
$(objpfx)g%: $(objpfx)% $(objpfx)gmon-start.o
|
|
$(link-relocatable)
|
|
endif
|
|
|
|
# These extra files are sometimes expected by system standard linking
|
|
# procedures, but we have nothing for them to do. So compile empty files.
|
|
$(addprefix $(objpfx),$(filter-out $(start-installed-name), $(csu-dummies))):\
|
|
$(before-compile)
|
|
$(COMPILE.c) -o $@ -x c /dev/null
|
|
|
|
# These headers are used by the startup code.
|
|
$(objpfx)abi-tag.h: $(..)abi-tags
|
|
$(make-target-directory)
|
|
rm -f $@.new
|
|
sed -e 's/#.*$$//' -e '/^[ ]*$$/d' $< | \
|
|
while read conf tagos tagver; do \
|
|
test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
|
|
: "$$conf"` != 0 || continue; \
|
|
( echo "$$tagos" | \
|
|
sed -e 's/[^0-9xXa-fA-F ]//' \
|
|
-e 's/^/#define __ABI_TAG_OS /'; \
|
|
echo "#ifndef __ABI_TAG_VERSION"; \
|
|
echo "$$tagver" | \
|
|
sed -e 's/[^0-9xXa-fA-F]/ /g' -e 's/ *$$//' \
|
|
-e 's/ /,/g' -e 's/^/# define __ABI_TAG_VERSION /'; \
|
|
echo "#endif" ) > $@.new; \
|
|
done
|
|
if test -r $@.new; then mv -f $@.new $@; \
|
|
else echo >&2 'This configuration not matched in $<'; exit 1; fi
|
|
|
|
ifneq ($(multidir),.)
|
|
$(addprefix $(objpfx)$(multidir)/, $(install-lib)): $(addprefix $(objpfx), $(install-lib))
|
|
$(make-link-multidir)
|
|
endif
|