cross.sh
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上传日期:2019-07-14
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- #!/bin/bash
- # $Id$
- # Copyright 2006 Michael Mohr with modifications by Roger Dingledine
- # See LICENSE for licensing information.
- #######################################################################
- # Tor-cross: a tool to help cross-compile Tor
- #
- # The purpose of a cross-compiler is to produce an executable for
- # one system (CPU) on another. This is useful, for example, when
- # the target system does not have a native compiler available.
- # You might, for example, wish to cross-compile a program on your
- # host (the computer you're working on now) for a target such as
- # a router or handheld computer.
- #
- # A number of environment variables must be set in order for this
- # script to work:
- # $PREFIX, $CROSSPATH, $HOST_TRIPLET, $HOST,
- # and (optionally) $BUILD
- # Please run the script for a description of each one. If automated
- # builds are desired, the above variables can be exported at the top
- # of this script.
- #
- # Recent releases of Tor include test programs in configure. Normally
- # this is a good thing, since it catches a number of problems.
- # However, this also presents a problem when cross compiling, since
- # you can't run binary images for the target system on the host.
- #
- # Tor-cross assumes that you know what you're doing and removes a
- # number of checks known to cause problems with this process.
- # Note that this does not guarantee that the program will run or
- # even compile; it simply allows configure to generate the Makefiles.
- #
- # Stripping the binaries should almost always be done for an
- # embedded environment where space is at an exacting premium.
- # However, the default is NOT to strip them since they are useful for
- # debugging. If you do not plan to do any debugging and you
- # don't care about the debugging symbols, set $STRIP to "yes" before
- # running this script.
- #
- # Tor-cross was written by Michael Mohr. He can be contacted at
- # m(dot)mohr(at)laposte(dot)net. Comments are appreciated, but
- # flames go to /dev/null.
- #
- # The target with which this script is tested is little-endian
- # MIPS Linux, built on an Athlon-based Linux desktop.
- #
- #######################################################################
- # disable the platform-specific tests in configure
- export CROSS_COMPILE=yes
- # for error conditions
- EXITVAL=0
- if [ ! -f autogen.sh ]
- then
- echo "Please run this script from the root of the Tor distribution"
- exit -1
- fi
- if [ ! -f configure ]
- then
- if [ -z $GEN_BUILD ]
- then
- echo "To automatically generate the build environment, set $GEN_BUILD"
- echo "to yes; for example,"
- echo " export GEN_BUILD=yes"
- EXITVAL=-1
- fi
- fi
- if [ -z $PREFIX ]
- then
- echo "You must define $PREFIX since you are cross-compiling."
- echo "Select a non-system location (i.e. /tmp/tor-cross):"
- echo " export PREFIX=/tmp/tor-cross"
- EXITVAL=-1
- fi
- if [ -z $CROSSPATH ]
- then
- echo "You must define the location of your cross-compiler's"
- echo "directory using $CROSSPATH; for example,"
- echo " export CROSSPATH=/opt/cross/staging_dir_mipsel/bin"
- EXITVAL=-1
- fi
- if [ -z $HOST_TRIPLET ]
- then
- echo "You must define $HOST_TRIPLET to continue. For example,"
- echo "if you normally cross-compile applications using"
- echo "mipsel-linux-uclibc-gcc, you would set $HOST_TRIPLET like so:"
- echo " export HOST_TRIPLET=mipsel-linux-uclibc-"
- EXITVAL=-1
- fi
- if [ -z $HOST ]
- then
- echo "You must specify a target processor with $HOST; for example:"
- echo " export HOST=mipsel-unknown-elf"
- EXITVAL=-1
- fi
- if [ -z $BUILD ]
- then
- echo "You should specify the host machine's type with $BUILD; for example:"
- echo " export BUILD=i686-pc-linux-gnu"
- echo "If you wish to let configure autodetect the host, set $BUILD to 'auto':"
- echo " export BUILD=auto"
- EXITVAL=-1
- fi
- if [ ! -x $CROSSPATH/$HOST_TRIPLETgcc ]
- then
- echo "The specified toolchain does not contain an executable C compiler."
- echo "Please double-check your settings and rerun cross.sh."
- EXITVAL=-1
- fi
- if [ $EXITVAL -ne 0 ]
- then
- echo "Remember, you can hard-code these values in cross.sh if needed."
- exit $EXITVAL
- fi
- if [ ! -z "$GEN_BUILD" -a ! -f configure ]
- then
- export NOCONF=yes
- ./autogen.sh
- fi
- # clean up any existing object files
- if [ -f src/or/tor ]
- then
- make clean
- fi
- # Set up the build environment and try to run configure
- export PATH=$PATH:$CROSSPATH
- export RANLIB=${HOST_TRIPLET}ranlib
- export CC=${HOST_TRIPLET}gcc
- if [ $BUILD == "auto" ]
- then
- ./configure
- --enable-debug
- --enable-eventdns
- --prefix=$PREFIX
- --host=$HOST
- else
- ./configure
- --enable-debug
- --enable-eventdns
- --prefix=$PREFIX
- --host=$HOST
- --build=$BUILD
- fi
- # has a problem occurred?
- if [ $? -ne 0 ]
- then
- echo ""
- echo "A problem has been detected with configure."
- echo "Please check the output above and rerun cross.sh"
- echo ""
- exit -1
- fi
- # Now we're cookin'
- make
- # has a problem occurred?
- if [ $? -ne 0 ]
- then
- echo ""
- echo "A problem has been detected with make."
- echo "Please check the output above and rerun make."
- echo ""
- exit -1
- fi
- # if $STRIP has length (i.e. STRIP=yes), strip the binaries
- if [ ! -z $STRIP ]
- then
- ${HOST_TRIPLET}strip
- src/or/tor
- src/or/test
- src/tools/tor-resolve
- fi
- echo ""
- echo "Tor should be compiled at this point. Now run 'make install' to"
- echo "install to $PREFIX"
- echo ""