]> Git Repo - uclibc-ng.git/blob - Rules.mak
Fix the gcc wrapper to include crtbeginS.o and crtendS.o when we are compiling
[uclibc-ng.git] / Rules.mak
1 # Rules.make for uClibc
2 #
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...  
6
7 # Copyright (C) 2000 by Lineo, inc.
8 # Copyright (C) 2000-2002 Erik Andersen <[email protected]>
9 #
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
13 # later version.
14 #
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
18 # details.
19 #
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
23
24 -include $(TOPDIR)Config
25
26 # Be sure to update include/features.h when changing this...
27 MAJOR_VERSION:=0
28 MINOR_VERSION:=9
29 SUBLEVEL:=13
30 VERSION:=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
31
32
33 LIBNAME:=libc.a
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
38
39 NATIVE_ARCH:= ${shell uname -m | sed \
40                 -e 's/i.86/i386/' \
41                 -e 's/sparc.*/sparc/' \
42                 -e 's/arm.*/arm/g' \
43                 -e 's/m68k.*/m68k/' \
44                 -e 's/ppc/powerpc/g' \
45                 -e 's/v850.*/v850/g' \
46                 -e 's/sh[234].*/sh/' \
47                 -e 's/mips.*/mips/' \
48                 }
49 ifeq ($(strip $(TARGET_ARCH)),)
50 TARGET_ARCH:=${shell $(CC) -dumpmachine | sed -e s'/-.*//' \
51                 -e 's/i.86/i386/' \
52                 -e 's/sparc.*/sparc/' \
53                 -e 's/arm.*/arm/g' \
54                 -e 's/m68k.*/m68k/' \
55                 -e 's/ppc/powerpc/g' \
56                 -e 's/v850.*/v850/g' \
57                 -e 's/sh[234]/sh/' \
58                 -e 's/mips.*/mips/' \
59                 }
60 endif
61
62 # Ensure consistent filename sort order
63 LC_COLLATE      := C
64 export LC_COLLATE
65
66 ARFLAGS:=r
67
68 # Some nice architecture specific optimizations
69 ifndef OPTIMIZATION
70
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 $(TARGET_ARCH)),arm)
75         OPTIMIZATION+=-fstrict-aliasing
76 endif
77 ifeq ($(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 $(CC) -malign-functions=0 -malign-jumps=0 -S -o /dev/null -xc \
85                 /dev/null >/dev/null 2>&1; then echo "-malign-functions=0 -malign-jumps=0"; fi; fi}
86 endif
87 endif
88
89 # Add a bunch of extra pedantic annoyingly strict checks
90 WARNINGS+=-Wall -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing
91
92
93 CFLAGS:=$(WARNINGS) $(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) \
94         -I$(TOPDIR)include -iwithprefix include -I. -D_LIBC $(ARCH_CFLAGS)
95 NATIVE_CFLAGS:=-O2 -Wall
96
97 ifeq ($(strip $(DODEBUG)),true)
98     CFLAGS += -g
99     LDFLAGS:= -shared --warn-common --warn-once -z combreloc
100     STRIPTOOL:= /bin/true -Since_we_are_debugging
101 else
102     CFLAGS  += -DNDEBUG #-fomit-frame-pointer
103     LDFLAGS := -s -shared --warn-common --warn-once -z combreloc
104 endif
105
106 ifeq ($(strip $(HAVE_SHARED)),true)
107     DOPIC:=true
108     LIBRARY_CACHE:=#-DUSE_CACHE
109     ifeq ($(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)
113     else
114         LDSO:=$(SYSTEM_LDSO)
115         BUILD_UCLIBC_LDSO:=false
116         DYNAMIC_LINKER:=/lib/$(notdir $(SYSTEM_LDSO))
117         BUILD_DYNAMIC_LINKER:=/lib/$(notdir $(SYSTEM_LDSO))
118    endif
119 endif
120 ifeq ($(strip $(DOPIC)),true)
121     CFLAGS += -fPIC
122 endif
123 ifeq ($(strip $(INCLUDE_THREADS)),true)
124     CFLAGS  += -D_LIBC_REENTRANT
125 endif
126 # Currently locale support requires wide char support.
127 ifeq ($(strip $(HAS_LOCALE)),true)
128     HAS_WCHAR:=true
129 endif
130
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:
134 #   TARGET_PREFIX/
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...
140 TARGET_PREFIX = /
141
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