335 lines
9.1 KiB
Plaintext
335 lines
9.1 KiB
Plaintext
# Copyright (C) 1991, 1992 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., 675 Mass Ave,
|
||
# Cambridge, MA 02139, USA.
|
||
|
||
#
|
||
# Makefile configuration options for the GNU C library.
|
||
#
|
||
ifneq (,)
|
||
This makefile requires GNU Make.
|
||
endif
|
||
|
||
ifneq "$(origin +included-Makeconfig)" "file"
|
||
|
||
+included-Makeconfig := yes
|
||
|
||
ifdef subdir
|
||
.. := ../
|
||
endif
|
||
|
||
ifndef ARCH
|
||
ifdef machine
|
||
# If config.make exists, the source directory was configured,
|
||
# so don't try to be clever and find another directory to build in.
|
||
ifeq (,$(wildcard $(..)config.make))
|
||
ARCH = $(machine)
|
||
endif # config.make
|
||
endif # machine
|
||
endif # ARCH
|
||
|
||
# Directory for object files and libc.a. If this is not defined, the
|
||
# object files live in the subdirectories where their sources live, and
|
||
# libc.a lives in the parent directory (this probably doesn't work any
|
||
# more).
|
||
ifdef ARCH
|
||
ifeq ($(filter /%,$(ARCH)),)
|
||
objdir := $(..)$(ARCH)
|
||
else
|
||
objdir = $(ARCH)
|
||
endif
|
||
endif
|
||
|
||
# $(common-objdir) is the place to put objects and
|
||
# such that are not specific to a single subdir.
|
||
ifdef objdir
|
||
objpfx = $(objdir)/
|
||
common-objpfx = $(objpfx)
|
||
common-objdir = $(objdir)
|
||
else
|
||
objpfx :=
|
||
ifdef ..
|
||
common-objpfx = $(..)
|
||
common-objdir = ..
|
||
else
|
||
# This is a kludge. make wizards might grok.
|
||
common-objpfx = sysdeps/../
|
||
endif
|
||
endif
|
||
|
||
libc.a = $(common-objpfx)libc.a
|
||
|
||
|
||
# Get the values defined by options to `configure'.
|
||
include $(common-objpfx)config.make
|
||
|
||
# Force the user to configure before making.
|
||
$(objpfx)config.make:
|
||
@echo The GNU C library has not been configured. >&2
|
||
@echo Run \`configure\' to configure it before building. >&2
|
||
@exit 1
|
||
|
||
# Get the user's configuration parameters.
|
||
ifneq ($(wildcard $(..)configparms),)
|
||
include $(..)configparms
|
||
endif
|
||
ifneq ($(objpfx),)
|
||
ifneq ($(wildcard $(objpfx)configparms),)
|
||
include $(objpfx)configparms
|
||
endif
|
||
endif
|
||
|
||
####
|
||
#### These are the configuration variables. You can define values for
|
||
#### the variables below in the file `configparms'.
|
||
#### Do NOT edit this file.
|
||
####
|
||
|
||
|
||
# Common prefix for machine-independent installation directories.
|
||
ifndef prefix
|
||
prefix = /usr/local
|
||
endif
|
||
|
||
# Common prefix for machine-dependent installation directories.
|
||
ifndef exec_prefix
|
||
exec_prefix = $(prefix)
|
||
endif
|
||
|
||
# Where to install the library and object files.
|
||
ifndef libdir
|
||
libdir = $(exec_prefix)/lib
|
||
endif
|
||
|
||
# Where to install the header files.
|
||
ifndef includedir
|
||
includedir = $(exec_prefix)/include
|
||
endif
|
||
|
||
# Define if the library should install its own <stddef.h>.
|
||
# Do this unless you are using version 2.2 or later of GCC.
|
||
ifndef stddef.h
|
||
stddef.h = stddef.h
|
||
endif
|
||
|
||
# Define if the library should install its own <stdarg.h>.
|
||
# Do this unless you are using version 2.3 or later of GCC.
|
||
ifndef stdarg.h
|
||
stdarg.h := stdarg.h $(wildcard va-*.h)
|
||
endif
|
||
|
||
# Where to install machine-independent data files.
|
||
# These are the timezone database, and eventually the locale database.
|
||
ifndef datadir
|
||
datadir = $(prefix)/lib
|
||
endif
|
||
|
||
# Where to install programs.
|
||
ifndef bindir
|
||
bindir = $(exec_prefix)/bin
|
||
endif
|
||
|
||
# What timezone should be the installed default (e.g., US/Eastern).
|
||
# Run `make -C time echo-zonenames' to see a list of available zone names.
|
||
# The local timezone can be changed with `zic -l TIMEZONE' at any time.
|
||
ifndef localtime
|
||
localtime = Factory
|
||
endif
|
||
|
||
# Where to install the "localtime" timezone file; this is the file
|
||
# whose contents $(localtime) specifies. If this is a relative
|
||
# pathname, it is relative to $(datadir)/zoneinfo.
|
||
ifndef localtime-file
|
||
localtime-file = $(prefix)/etc/localtime
|
||
endif
|
||
|
||
# What timezone's DST rules should be used when a POSIX-style TZ
|
||
# environment variable doesn't specify any rules. For 1003.1 compliance
|
||
# this timezone must use rules that are as U.S. federal law defines DST.
|
||
# Run `make -C time echo-zonenames' to see a list of available zone names.
|
||
# This setting can be changed with `zic -p TIMEZONE' at any time.
|
||
ifndef posixrules
|
||
posixrules = US/Eastern
|
||
endif
|
||
|
||
# Where to install the "posixrules" timezone file; this is file
|
||
# whose contents $(posixrules) specifies. If this is a relative
|
||
# pathname, it is relative to $(datadir)/zoneinfo.
|
||
ifndef posixrules-file
|
||
posixrules-file = posixrules
|
||
endif
|
||
|
||
|
||
# Directory where your system's native header files live.
|
||
# This is used on Unix systems to generate some GNU libc header files.
|
||
ifndef sysincludedir
|
||
sysincludedir = /usr/include
|
||
endif
|
||
|
||
|
||
# Commands to install files.
|
||
ifndef INSTALL_DATA
|
||
INSTALL_DATA = $(INSTALL)
|
||
endif
|
||
ifndef INSTALL_PROGRAM
|
||
INSTALL_PROGRAM = $(INSTALL)
|
||
endif
|
||
ifndef INSTALL
|
||
INSTALL = install
|
||
endif
|
||
|
||
|
||
# The name of the C compiler.
|
||
# If you've got GCC, and it works, use it.
|
||
ifeq ($(origin CC),default)
|
||
CC := gcc
|
||
endif
|
||
|
||
# These are preprocessor macros we want to predefine. Define HAVE_GNU_LD
|
||
# if using GNU ld (which you should do if possible). If you do this, you
|
||
# may need the GNU assembler as well. If you don't do this, your library
|
||
# won't work as well (and won't be strictly compliant with the ANSI C
|
||
# and POSIX.1 standards).
|
||
+defines = $(defines) $(gnu_ld) $(gnu_as)
|
||
|
||
# Default flags to pass the C compiler.
|
||
ifndef default_cflags
|
||
+default_cflags := -g
|
||
endif
|
||
|
||
# Flags to pass the C compiler when assembling preprocessed assembly code
|
||
# (`.S' files). On some systems the assembler doesn't understand the `#' line
|
||
# directives the preprocessor produces. If you have troubling compiling
|
||
# assembly code, try using -P here to suppress these directives.
|
||
ifndef asm-CPPFLAGS
|
||
asm-CPPFLAGS =
|
||
endif
|
||
|
||
# Command for linking programs with the C library.
|
||
ifndef +link
|
||
+link = $(CC) -nostdlib -o $@ $(common-objpfx)start.o $(^:lib=$(libc.a)) \
|
||
$(gnulib) $(libc.a)
|
||
endif
|
||
ifndef gnulib
|
||
gnulib := -lgcc
|
||
endif
|
||
|
||
ifndef LD
|
||
LD := ld -X
|
||
endif
|
||
|
||
ifndef RANLIB
|
||
RANLIB = ranlib
|
||
endif
|
||
|
||
# Define non-empty if the C compiler understands -v (print version).
|
||
+cc_version = $(filter gcc,$(notdir $(firstword $(CC)))) # if using gcc
|
||
|
||
# Extra flags to pass to GCC.
|
||
+gccwarn := -Wall -Wwrite-strings -Wpointer-arith -Wstrict-prototypes
|
||
+gccopt := -fstrength-reduce
|
||
|
||
# This is the program that generates makefile
|
||
# dependencies from C source files.
|
||
ifndef +mkdep
|
||
+mkdep = $(CC) -M
|
||
endif
|
||
|
||
# The program that makes Emacs-style TAGS files.
|
||
ETAGS := etags -T
|
||
|
||
####
|
||
#### End of configuration variables.
|
||
####
|
||
|
||
# This tells some versions of GNU make before 3.63 not to export all variables.
|
||
.NOEXPORT:
|
||
|
||
# We want to echo the commands we're running without
|
||
# umpteem zillion filenames along with it (we use `...' instead)
|
||
# but we don't want this echoing done when the user has said
|
||
# he doesn't want to see commands echoed by using -s.
|
||
ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s
|
||
+cmdecho := echo >/dev/null
|
||
else # not -s
|
||
+cmdecho := echo
|
||
endif # -s
|
||
|
||
# These are the flags given to the compiler to tell
|
||
# it what sort of optimization and/or debugging output to do.
|
||
ifndef +cflags
|
||
# If `CFLAGS' was defined, use that.
|
||
ifdef CFLAGS
|
||
+cflags := $(filter-out -I%,$(CFLAGS))
|
||
endif # CFLAGS
|
||
endif # +cflags
|
||
|
||
# If none of the above worked, default to "-g".
|
||
ifeq "$(strip $(+cflags))" ""
|
||
+cflags := $(+default_cflags)
|
||
endif # $(+cflags) == ""
|
||
|
||
# If using gcc, add flags that only it will grok.
|
||
ifneq "$(findstring gcc,$(CC))" ""
|
||
+cflags := $(+cflags) $(+gccwarn)
|
||
ifneq "$(filter -O,$(+cflags))" ""
|
||
+cflags := $(+cflags) $(+gccopt)
|
||
+gcc-nowarn := -w
|
||
endif
|
||
else
|
||
+gcc-nowarn :=
|
||
endif # gcc
|
||
|
||
# Don't duplicate options if we inherited variables from the parent.
|
||
+cflags := $(sort $(+cflags))
|
||
|
||
|
||
ifneq "$(findstring v,$(MAKEFLAGS))" "" # if -v
|
||
ifneq "$(strip $(+cc_version))" ""
|
||
# If Make is telling us version info, tell the compiler to do so as well.
|
||
CC := $(CC) -v
|
||
endif # +cc_version
|
||
endif # -v
|
||
|
||
# These are flags given to the C compiler to
|
||
# tell it to look for include files (including ones
|
||
# given in angle brackets) in the current directory
|
||
# and in the parent library source directory.
|
||
ifneq "$(..)" ""
|
||
+includes = -I. -I$(patsubst %/,%,$(..)) $(includes)
|
||
else
|
||
+includes = -I. $(includes)
|
||
endif
|
||
|
||
|
||
# These are the variables that the implicit compilation rules use.
|
||
CPPFLAGS = $(+includes) $(+defines) -DLIBC
|
||
override CFLAGS = $(+cflags)
|
||
|
||
|
||
# This is the macro that the implicit linking rules use.
|
||
ifneq "$(filter -g,$(+cflags))" "" # -g is in $(+cflags)
|
||
LDFLAGS := -g
|
||
endif
|
||
|
||
|
||
ifneq "$(filter -DHAVE_GNU_LD,$(CPPFLAGS))" ""
|
||
+gnu-stabs := yes
|
||
endif
|
||
|
||
|
||
endif # Makeconfig not yet included
|