1 # Rules.make for uClibc
3 # This file contains rules which are shared between multiple Makefiles. All
4 # normal configuration options live in the file named "Config". You probably
5 # should not mess with this file unless you know what you are doing...
7 # Copyright (C) 2000 by Lineo, inc.
10 # This program is free software; you can redistribute it and/or modify it under
11 # the terms of the GNU Library General Public License as published by the Free
12 # Software Foundation; either version 2 of the License, or (at your option) any
15 # This program is distributed in the hope that it will be useful, but WITHOUT
16 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17 # FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
20 # You should have received a copy of the GNU Library General Public License
21 # along with this program; if not, write to the Free Software Foundation, Inc.,
22 # 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 -include $(TOPDIR)Config
26 # Be sure to update include/features.h when changing this...
30 VERSION:=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
34 SHARED_FULLNAME:=libuClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
35 SHARED_MAJORNAME:=libc.so.$(MAJOR_VERSION)
36 UCLIBC_LDSO:=ld-uClibc.so.$(MAJOR_VERSION)
37 LIBC:=$(TOPDIR)libc/libc.a
39 NATIVE_ARCH:= ${shell uname -m | sed \
41 -e 's/sparc.*/sparc/' \
44 -e 's/ppc/powerpc/g' \
45 -e 's/v850.*/v850/g' \
46 -e 's/sh[234].*/sh/' \
49 ifeq ($(strip $(TARGET_ARCH)),)
50 TARGET_ARCH:=${shell $(CC) -dumpmachine | sed -e s'/-.*//' \
52 -e 's/sparc.*/sparc/' \
55 -e 's/ppc/powerpc/g' \
56 -e 's/v850.*/v850/g' \
62 # Ensure consistent filename sort order
68 # Some nice architecture specific optimizations
71 # use '-Os' optimization if available, else use -O2, allow Config to override
72 OPTIMIZATION:= ${shell if $(CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \
73 then echo "-Os"; else echo "-O2" ; fi}
74 ifeq ($(strip $(TARGET_ARCH)),arm)
75 OPTIMIZATION+=-fstrict-aliasing
77 ifeq ($(strip $(TARGET_ARCH)),i386)
78 OPTIMIZATION+=-march=i386
79 OPTIMIZATION += ${shell if $(CC) -mpreferred-stack-boundary=2 -S -o /dev/null -xc \
80 /dev/null >/dev/null 2>&1; then echo "-mpreferred-stack-boundary=2"; fi}
81 OPTIMIZATION += ${shell if $(CC) -falign-functions=1 -falign-jumps=0 -falign-loops=0 \
82 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo \
83 "-falign-functions=1 -falign-jumps=0 -falign-loops=0"; else \
84 if $(CC) -malign-functions=0 -malign-jumps=0 -S -o /dev/null -xc \
85 /dev/null >/dev/null 2>&1; then echo "-malign-functions=0 -malign-jumps=0"; fi; fi}
89 # Add a bunch of extra pedantic annoyingly strict checks
90 WARNINGS+=-Wall -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing
93 CFLAGS:=$(WARNINGS) $(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) \
94 -I$(TOPDIR)include -iwithprefix include -I. -D_LIBC $(ARCH_CFLAGS)
95 NATIVE_CFLAGS:=-O2 -Wall
97 ifeq ($(strip $(DODEBUG)),true)
99 LDFLAGS:= -shared --warn-common --warn-once -z combreloc
100 STRIPTOOL:= /bin/true -Since_we_are_debugging
102 CFLAGS += -DNDEBUG #-fomit-frame-pointer
103 LDFLAGS := -s -shared --warn-common --warn-once -z combreloc
106 ifeq ($(strip $(HAVE_SHARED)),true)
108 LIBRARY_CACHE:=#-DUSE_CACHE
109 ifeq ($(strip $(BUILD_UCLIBC_LDSO)),true)
110 LDSO:=$(TOPDIR)lib/$(UCLIBC_LDSO)
111 DYNAMIC_LINKER:=$(SHARED_LIB_LOADER_PATH)/$(UCLIBC_LDSO)
112 BUILD_DYNAMIC_LINKER:=${shell cd $(TOPDIR) && pwd}/lib/$(UCLIBC_LDSO)
115 BUILD_UCLIBC_LDSO:=false
116 DYNAMIC_LINKER:=/lib/$(notdir $(SYSTEM_LDSO))
117 BUILD_DYNAMIC_LINKER:=/lib/$(notdir $(SYSTEM_LDSO))
120 ifeq ($(strip $(DOPIC)),true)
123 ifeq ($(strip $(INCLUDE_THREADS)),true)
124 CFLAGS += -D_LIBC_REENTRANT
126 # Currently locale support requires wide char support.
127 ifeq ($(strip $(HAS_LOCALE)),true)
131 # TARGET_PREFIX is the directory under which which the uClibc runtime
132 # environment will be installed and used on the target system. The
133 # result will look something like the following:
135 # lib/ <contains all runtime and static libs>
136 # usr/lib/ <this directory is searched for runtime libs>
137 # etc/ <weher the shared library cache and configuration
138 # information go if you enabled LIBRARY_CACHE above>
139 # Very few people will need to change this value from the default...