uclibc-ng/Rules.mak

# Rules.make for uCLibc
#
# This file contains rules which are shared between multiple Makefiles.
# All normal configuration options live in the file named "Config".
# You probably should not mess with this file unless you know what you
# are doing... 
#  -Erik Andersen <andersen@lineo.com> < andersee@debian.org>
# 
# Copyright (C) 2000 by Lineo, inc.
#
# This program 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.
#
# This program 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 General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
# Place, Suite 330, Boston, MA 02111-1307 USA
#

include Config

GCCINCDIR = $(shell gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp")

ARFLAGS=r

CCFLAGS=$(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) -Dlinux -D__linux__ -I$(TOPDIR)include -I$(GCCINCDIR) -I. -D__LIBC__
# Figure out what arch to build...
ARCH = $(shell uname -m | sed -e 's/i.86/i386/' -e 's/sparc.*/sparc/' -e 's/arm.*/arm/g')

ifeq ($(ARCH), arm)
    ARCH_CFLAGS=-fpic
endif

CFLAGS=$(ARCH_CFLAGS) $(CCFLAGS) $(DEFS)

ifeq ($(DODEBUG),true)
    CFLAGS += -Wall -g
    LDFLAGS = -nostdlib 
else
    CFLAGS  += -Wall #-fomit-frame-pointer
    LDFLAGS  = -s -nostdlib
endif

ifndef $(PREFIX)
    PREFIX = `pwd`/_install
endif

ifneq ($(HAS_MMU),true)
    CFLAGS += -D__HAS_NO_MMU__
endif

ifneq ($(HAS_FLOATS),true)
    CFLAGS += -D__HAS_NO_FLOATS__
endif

ifneq ($(DO_FIXME_STUFF),true)
    CFLAGS += -DFIXME
endif


# Use '-ffunction-sections -fdata-sections' and '--gc-sections' if they work
# to try and strip out any unused junk automagically....
#
ifeq ($(shell $(CC) -ffunction-sections -fdata-sections -S \
	-o /dev/null -xc /dev/null && $(LD) --gc-sections -v >/dev/null && echo 1),1)
    CFLAGS += -ffunction-sections -fdata-sections
    LDFLAGS += --gc-sections
endif