1 # Library Configuration rules 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.
8 # Copyright (C) 2000,2001 Erik Andersen <andersee@debian.org>
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 # Derived in part from the Linux-8086 C library, the GNU C Library, and several
25 # other sundry sources. Files within this library are copyright by their
26 # respective copyright holders.
30 # If you are running a cross compiler, you may want to set this
31 # to something more interesting... Target architecture is determined
32 # by asking this compiler what arch it compiles stuff for.
33 CROSS = #$(TARGET_ARCH)-linux-
38 STRIPTOOL = $(CROSS)strip
39 #STRIPTOOL = /bin/true
41 # Set the following to `true' to make a debuggable build, and `false' for
45 # Compiler warnings you want to see
48 # Note that the kernel source you use to compile with should be the same as the
49 # Linux kernel you run your apps on. uClibc doesn't even try to achieve binary
50 # compatibility across kernel versions. So don't expect, for example, uClibc
51 # compiled with Linux kernel 2.0.x to implement lchown properly, since 2.0.x
52 # can't do that. Similarly, if you compile uClibc vs Linux 2.4.x kernel headers,
53 # but then run on Linux 2.0.x, lchown will be compiled into uClibc, but won't
54 # work at all. You have been warned.
55 KERNEL_SOURCE=/usr/src/kernel-headers-2.2.19-sparc
57 # Set this to `false' if your CPU doesn't have a memory management unit (MMU).
58 # Set it to `true' otherwise.
61 # Set this to `false' if you don't have/need basic floating point support
62 # support in libc (strtod, printf, scanf). Set it to `true' otherwise.
63 # If this is not true, then libm will not be built.
64 HAS_FLOATING_POINT = true
66 # Set to `true' if you want the math library to contain the full set
67 # of C99 math library features. Costs an extra 35k or so on x86.
70 # Set this to `false' if you don't have/need "(unsigned) long long int" support.
71 # Set it to `true' otherwise.
72 # Affects *printf and *scanf functions.
73 # Also omits strto(u)ll, and (u)lltostr from the library if `false'.
76 # Set this to 'false if you don't need shadow password support.
79 # Set this to `false' if you don't have/need locale support; `true' otherwise.
80 # NOTE: Currently does not affect collation.
81 # You must also generate the locale data and associated .h file.
82 # See the README in directory extra/locale for details.
85 # Set this to `false' if you don't have/need wide char support.
88 # This specifies which malloc implementation is used.
90 # "malloc" use mmap for all allocations and so works very well on MMU-less
91 # systems that do not support the brk() system call. It is pretty smart
92 # about reusing already allocated memory, and minimizing memory wastage.
94 # "malloc-930716" is derived from libc-5.3.12 and uses the brk() system call
95 # for all memory allocations. This makes it very fast. It is also pretty
96 # smart about reusing already allocated memory, and minimizing memory wastage.
97 # Because this uses brk() it will not work on uClinux MMU-less systems.
99 MALLOC = malloc-930716
101 # Having brk allows one to use malloc-930716, which is an order
102 # of magnitude faster then "malloc" for most allocations, but
103 # will do very bad things on MMU-less systems...
106 # If you want to collect common syscall code into one function, set to this to
107 # `true'. Set it to false otherwise.
108 # On i386 this saves about than 2.8k over all syscalls.
109 # The idea came from the implementation in dietlibc.
110 # At present, only affects i386.
111 UNIFIED_SYSCALL = false
113 # If you want large file support (greater then 2 GiB) turn this on.
114 # Do not enable this unless your kernel provides large file support.
117 # Posix regular expression code is really big -- 27k all by itself.
118 # If you don't use regular expressions, turn this off and save space.
119 # Of course, if you only staticly link, leave this on, since it will
120 # only be included in your apps if you use regular expressions.
123 # If you want to include RPC support, enable this. RPC is almost never used
124 # for anything except NFS support, so unless you plan to use NFS, leave this
125 # disabled. This is off by default.
128 # If you want to include support for the next version of the Internet
129 # Protocol: IP version 6, enable this. This is off by default.
132 # If you want to include threads support, enable this. The C library will
133 # be compiled thread-safe, and the libpthread library will be built.
134 INCLUDE_THREADS=false
136 # If you want to support only Unix 98 PTYs enable this. Some older
137 # applications may need this disabled. For most current programs,
138 # you can generally leave this true.
139 UNIX98PTY_ONLY = true
141 # Enable this if /dev/pts is on a devpts or devfs file system. Both
142 # these filesystems automatically manage permissions on the /dev/pts
143 # devices. You may need to mount this fs on /dev/pts for this to work.
144 # This is true by default.
148 # If you want to compile the library as PIC code, turn this on.
149 # This is automagically enabled when HAVE_SHARED is true
152 # Enable support for shared libraries? If this is false, you can
153 # ignore all the rest of the options in this file...
156 # uClibc has a native shared library loader for some architectures.
157 BUILD_UCLIBC_LDSO=false
159 # If you are using shared libraries, but do not want/have a native
160 # uClibc shared library loader, please specify the name of your
161 # system's shared library loader here...
162 #SYSTEM_LDSO=/lib/ld-linux.so.2
163 SYSTEM_LDSO=$(shell for each in `$(CC) -print-search-dirs| \
164 grep ^libraries| sed -e 's/^libraries: //' -e 's/:/ /g'`;\
165 do ls $$each/ld.so.* 2>/dev/null;done)
167 # When using shared libraries, this path is the location where the
168 # shared library will be invoked. This value will be compiled into
169 # every binary compiled with uClibc.
172 # If you do not have a shared library loader with the correct name
173 # sitting in the directory this points to, your binaries will not run.
174 SHARED_LIB_LOADER_PATH=$(DEVEL_PREFIX)/lib
176 # DEVEL_PREFIX is the directory into which the uClibc development
177 # environment will be installed. The result will look something
178 # like the following:
180 # lib/ <contains all runtime and static libs>
181 # include/ <Where all the header files go>
182 # This value is used by the 'make install' Makefile target. Since this
183 # directory is compiled into the uclibc cross compiler spoofer, you
184 # have to recompile if you change this value...
185 DEVEL_PREFIX = /usr/$(TARGET_ARCH)-linux-uclibc
187 # SYSTEM_DEVEL_PREFIX is the directory prefix used when installing
188 # bin/arch-uclibc-gcc, bin/arch-uclibc-ld, etc. This is only used by
189 # the 'make install' target, and is not compiled into anything. This
190 # defaults to $DEVEL_PREFIX/usr, but makers of .rpms and .debs will
191 # want to set this to "/usr" instead.
192 SYSTEM_DEVEL_PREFIX = $(DEVEL_PREFIX)
194 # DEVEL_TOOL_PREFIX is the directory prefix used when installing
195 # bin/gcc, bin/ld, etc. This is only used by the 'make install'
196 # target, and is not compiled into anything. This defaults to
197 # $DEVEL_PREFIX/usr, but makers of .rpms and .debs may want to
198 # set this to something else.
199 DEVEL_TOOL_PREFIX = $(DEVEL_PREFIX)/usr
201 # If you want 'make install' to install everything under a temporary
202 # directory, the define PREFIX during the install step,
203 # i.e., 'make PREFIX=/var/tmp/uClibc install'.
204 #PREFIX = $(TOPDIR)/_install