mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-22 19:00:07 +00:00
307bcd7783
1997-04-18 02:18 Ulrich Drepper <drepper@cygnus.com> * csu/initfini.c: Rewrite by Zack Weinberg <zack@rabi.phys.columbia.edu>. * csu/Makefile: Add rules for rewrite. * csu/defs.awk: Helper script to generate derived header.
118 lines
4.1 KiB
Makefile
118 lines
4.1 KiB
Makefile
# Makefile for csu code for GNU C library.
|
|
|
|
# Copyright (C) 1995, 1996, 1997 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 Library General Public License
|
|
# as published by the Free Software Foundation; either version 2 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
|
|
# Library General Public License for more details.
|
|
|
|
# You should have received a copy of the GNU Library General Public
|
|
# License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
# write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
# Boston, MA 02111-1307, USA.
|
|
|
|
# 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 in used in the link
|
|
# to make the .init and .fini sections work right; both these files are
|
|
# built (in an arcane manner) from initfini.c.
|
|
|
|
subdir := csu
|
|
|
|
routines = init-first
|
|
csu-dummies = $(filter-out $(start-installed-name),crt1.o Mcrt1.o)
|
|
extra-objs = start.o gmon-start.o \
|
|
$(start-installed-name) g$(start-installed-name) \
|
|
$(csu-dummies)
|
|
omit-deps = $(patsubst %.o,%,$(start-installed-name) g$(start-installed-name) \
|
|
$(csu-dummies))
|
|
install-lib = $(start-installed-name) g$(start-installed-name) \
|
|
$(csu-dummies)
|
|
distribute = initfini.c gmon-start.c start.c
|
|
|
|
all: # Make this the default target; it will be defined in Rules.
|
|
|
|
include ../Makeconfig
|
|
|
|
ifneq ($(elf),yes)
|
|
|
|
# When not using ELF, there is just one startfile, called crt0.o.
|
|
start-installed-name = crt0.o
|
|
|
|
else
|
|
|
|
# In the ELF universe, crt0.o is called crt1.o, and there are
|
|
# some additional bizarre files.
|
|
start-installed-name = crt1.o
|
|
have-initfini = yes
|
|
|
|
endif
|
|
|
|
ifeq ($(have-initfini),yes)
|
|
|
|
CPPFLAGS += -DHAVE_INITFINI
|
|
|
|
# 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)
|
|
generated += $(crtstuff:=.S) initfini.s align.h end.h
|
|
omit-deps += $(crtstuff)
|
|
|
|
# Special rules for the building of crti.o and crtn.o
|
|
$(objpfx)crt%.o: $(objpfx)crt%.S $(objpfx)defs.h
|
|
$(CC) -c -fPIC -g0 -I$(..) -I$(common-objpfx) -DASSEMBLER $< -o $@
|
|
|
|
$(objpfx)initfini.s: initfini.c
|
|
$(CC) -S -fPIC -finhibit-size-directive $(no-exceptions) $< -o $@
|
|
|
|
$(objpfx)crti.S: $(objpfx)initfini.s
|
|
sed -n -e '1,/@HEADER_ENDS/p' \
|
|
-e '/@_.*_PROLOG_BEGINS/,/@_.*_PROLOG_ENDS/p' \
|
|
-e '/@TRAILER_BEGINS/,$$p' $< > $@
|
|
|
|
$(objpfx)crtn.S: $(objpfx)initfini.s
|
|
sed -n -e '1,/@HEADER_ENDS/p' \
|
|
-e '/@_.*_EPILOG_BEGINS/,/@_.*_EPILOG_ENDS/p' \
|
|
-e '/@TRAILER_BEGINS/,$$p' $< > $@
|
|
|
|
$(objpfx)defs.h: $(objpfx)initfini.s
|
|
sed -n -e '/@TESTS_BEGIN/,/@TESTS_END/p' $< | \
|
|
awk -f defs.awk > $@
|
|
|
|
endif
|
|
|
|
include ../Rules
|
|
|
|
ifndef start-installed-name-rule
|
|
# The startfile is installed under different names, so we just call our
|
|
# source file `start.c' and copy to the installed name after compiling.
|
|
$(objpfx)$(start-installed-name): $(objpfx)start.o
|
|
-rm -f $@
|
|
ln $< $@
|
|
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.
|
|
$(objpfx)g$(start-installed-name): $(objpfx)start.o $(objpfx)gmon-start.o
|
|
$(CC) -nostdlib -nostartfiles -r -o $@ $^
|
|
|
|
# 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))):
|
|
cp /dev/null $(@:.o=.c)
|
|
$(COMPILE.c) $(@:.o=.c) $(OUTPUT_OPTION)
|
|
rm -f $(@:.o=.c)
|