1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/docs/MacOS-X.txt Sun Jan 17 23:06:02 2010 +0100
1.3 @@ -0,0 +1,283 @@
1.4 +Introduction
1.5 +------------
1.6 +
1.7 +This file introduces you to building a cross-toolchain on MacOS-X.
1.8 +Apart from the crosstool-NG configuration options for the specific target,
1.9 +what is important is:
1.10 + - what pre-requisites to install
1.11 + - how to install them
1.12 + - how to work around the case-insensitivity of HFS+
1.13 +
1.14 +This file was submitted by:
1.15 + Blair Burtan <info@northernlightstactical.com>
1.16 +The original version was found at:
1.17 + http://homepage.mac.com/macg3/TS7390-OSX-crosstool-instructions.txt
1.18 +
1.19 +
1.20 +Text
1.21 +----
1.22 +
1.23 +Compiling cross compiler for default TS-7390 debian system on Mac OS X
1.24 +
1.25 +Forewarning: It's kind of a pain. Several of OS X's packages aren't good enough
1.26 +so you need to install some GNU stuff. You might have an easier time using a
1.27 +package manager for OS X but I prefer to compile everything from source so I'm
1.28 +going to provide the instructions for that. Also there are a few little catches
1.29 +with how some of the older gcc/glibc stuff compiles on OS X.
1.30 +
1.31 +The version of glibc on the TS-7390 default file system is 2.3.6. So we need to
1.32 +make a compiler with glibc 2.3.6 or older. I guess you can pick whatever version
1.33 +of gcc you want to use. I'll pick 4.1.2, which is what is included with the 7390
1.34 +debian. But you could theoretically do something newer like 4.3.3 (or older,
1.35 +like 4.0.4) if you want, I think. All I know is the following works fine for gcc
1.36 +4.1.2 and glibc 2.3.6.
1.37 +
1.38 +First, you have to install some prerequisites. Go in a temporary folder
1.39 +somewhere and follow these directions.
1.40 +
1.41 +Some of the included OS X utilities aren't cool enough. So we need to download
1.42 +and install some GNU utilities. Luckily they compile with no trouble in
1.43 +Mac OS X! Nice work GNU people!
1.44 +
1.45 +First make sure you've installed the latest version of Xcode so you have gcc
1.46 +on your Mac.
1.47 +
1.48 +Install GNU sed into /usr/local. Note: I believe configure defaults to
1.49 +/usr/local as a prefix, but better safe than sorry.
1.50 +
1.51 + curl -O http://ftp.gnu.org/gnu/sed/sed-4.2.1.tar.bz2
1.52 + tar -xf sed-4.2.1.tar.bz2
1.53 + cd sed-4.2.1
1.54 + ./configure --prefix=/usr/local
1.55 + make -j 2 (or 4 or whatever...# of jobs that can run in parallel...
1.56 + on a dual core machine I use 4)
1.57 + sudo make install
1.58 +
1.59 +Install GNU coreutils:
1.60 +
1.61 + curl -O http://ftp.gnu.org/gnu/coreutils/coreutils-7.4.tar.gz
1.62 + tar -xf coreutils-7.4.tar.gz
1.63 + cd coreutils-7.4
1.64 + ./configure --prefix=/usr/local
1.65 + make -j 2
1.66 + sudo make install
1.67 +
1.68 +Install GNU libtool:
1.69 +
1.70 + curl -O http://ftp.gnu.org/gnu/libtool/libtool-2.2.6a.tar.gz
1.71 + tar -xf libtool-2.2.6a.tar.gz
1.72 + cd libtool-2.2.6
1.73 + ./configure --prefix=/usr/local
1.74 + make -j 2
1.75 + sudo make install
1.76 +
1.77 +Install GNU awk, needed to fix a weird error in glibc compile:
1.78 +
1.79 + curl -O http://ftp.gnu.org/gnu/gawk/gawk-3.1.7.tar.bz2
1.80 + tar -xf gawk-3.1.7.tar.bz2
1.81 + cd gawk-3.1.7
1.82 + ./configure --prefix=/usr/local
1.83 + make -j 2
1.84 + sudo make install
1.85 +
1.86 +Xcode doesn't come with objcopy/objdump, but you need them. Download GNU
1.87 +binutils 2.19.1 and install just objcopy and objdump. Not sure how exactly to
1.88 +do only them so I compile it all and copy them manually....there may be a
1.89 +better way.
1.90 +
1.91 + curl -O http://ftp.gnu.org/gnu/binutils/binutils-2.19.1.tar.bz2
1.92 + tar -xf binutils-2.19.1.tar.bz2
1.93 + cd binutils-2.19.1
1.94 + ./configure --prefix=/usr/local
1.95 + make -j 2
1.96 + sudo cp binutils/obj{dump,copy} /usr/local/bin
1.97 +
1.98 +
1.99 +Done installing prerequisites...now do the fun stuff!
1.100 +
1.101 +
1.102 +1) Create a disk image with Disk Utility (in /Utilities/Disk Utility).
1.103 + Open it and go to File->New->Blank Disk Image.
1.104 + Save As: Call it whatever you want.
1.105 + Volume name: Call it CrosstoolCompile
1.106 + Volume size: Go to custom and choose 2000 MB. This is a temporary image you
1.107 + can delete once you're done compiling if you wish.
1.108 + Volume format: Choose Mac OS Extended (Case-sensitive, journaled).
1.109 + Mac OS X's default file system does not allow you to name two files
1.110 + the same with different cases (abcd and ABCD) but you need this for
1.111 + crosstool. So that's why we're creating a disk image. Leave everything
1.112 + else the default and save it wherever you want.
1.113 +
1.114 +2) Create another disk image where the final toolchain will be installed.
1.115 + Your crosstool needs to go on a disk image for the same reason--needs a
1.116 + case sensitive file system and regular Mac OS X HFS+ is not. So we have to
1.117 + make another one. Follow the steps above but set the volume name to
1.118 + Crosstool and then make the volume size something like 300MB. Just make
1.119 + sure you leave plenty of room for any libraries you want to add to your
1.120 + cross compiler and that kind of stuff. The resulting toolchain will be about
1.121 + 110 MB in size. Set the Volume Format to
1.122 + Mac OS Extended (Case-sensitive, journaled).
1.123 + Save this image somewhere handy. You'll be using it forever after this.
1.124 +
1.125 +
1.126 +3) Make sure they're both mounted.
1.127 +
1.128 +4) cd /Volumes/CrosstoolCompile
1.129 +
1.130 +5) Grab crosstool-ng:
1.131 + curl -O http://ymorin.is-a-geek.org/download \
1.132 + /crosstool-ng/crosstool-ng-1.4.2.tar.bz2
1.133 + (OS X doesn't come with wget by default)
1.134 +
1.135 +6) Expand it
1.136 + tar -xf crosstool-ng-1.4.2.tar.bz2
1.137 + cd crosstool-ng-1.4.2
1.138 +
1.139 +7) Build it
1.140 + export PATH=/usr/local/bin:$PATH
1.141 +
1.142 + Make sure you do it like this.
1.143 + /usr/local/bin has to come in the path BEFORE anything else.
1.144 +
1.145 + ./configure --local
1.146 + make
1.147 +
1.148 +8) Configure crosstool
1.149 + ./ct-ng menuconfig
1.150 +
1.151 +At this point you should have a screen up similar to the Linux kernel config.
1.152 +Now set up options. Leave options as default if I haven't mentioned them.
1.153 +
1.154 +Paths and misc options:
1.155 + Enable Use obsolete features
1.156 + Enable Try features marked as EXPERIMENTAL
1.157 + Set prefix directory to:
1.158 + /Volumes/Crosstool/${CT_TARGET}
1.159 + (this tells it to install on the disk image you created)
1.160 + Number of parallel jobs: Multiply the number of cores you have times 2.
1.161 + That's what I generally do. So my dual core can do 4 jobs.
1.162 + Makes compiling the toolchain faster.
1.163 +
1.164 +Target options:
1.165 + Target Architecture: ARM
1.166 + Use EABI: Do NOT check this. The default TS Debian filesystem is OABI.
1.167 + If you are doing an EABI one, you can set this to true (but may want
1.168 + to do a different version of gcc/glibc)
1.169 + Architecture level: armv4t
1.170 + armv4t is for the EP9302. other processors you would pick the
1.171 + right architecture here.
1.172 + Floating point: Hardware
1.173 +
1.174 + I believe this is correct even though it's not really using an FPU because
1.175 + the pre-EABI debian distro was compiled with hardfloat instructions so
1.176 + whenever you do a floating point instruction the kernel is actually
1.177 + trapping an illegal instruction error, makes for slow floating point...
1.178 + EABI is so much better.
1.179 +
1.180 + I know hardware is the default, but I just wanted to clarify that you need
1.181 + to choose hardware here. I'm pretty sure anyway.
1.182 +
1.183 +Toolchain Options:
1.184 + Tuple's vendor string: whatever you want.
1.185 + It'll be arm-yourtuple-linux-gnu when you're finished.
1.186 +
1.187 +Operating System:
1.188 + Target OS: linux
1.189 + Linux kernel version: 2.6.21.7 (best match for TS kernel!)
1.190 +
1.191 +binutils:
1.192 + version: 2.19.1
1.193 +C compiler:
1.194 + gcc
1.195 + version: 4.1.2
1.196 + choose C++ below, so you can compile C++!
1.197 +C-library:
1.198 + glibc (NOT eglibc for this)
1.199 + glibc version: 2.3.6
1.200 + Threading implementation to use: linuxthreads
1.201 +
1.202 +(note: nptl is better than linuxthreads, but it looks like nptl didn't support
1.203 + ARM back in glibc 2.3.6?
1.204 +
1.205 +Exit and save config.
1.206 +
1.207 +Now we need to add a patch. Looks like the configure script for glibc does not
1.208 +like some of apple's binutils, so we need to patch it to skip the version tests
1.209 +for as and ld. Stick this patch in crosstool-ng-1.4.2/patches/glibc/2.3.6 to
1.210 +skip the version test for as and ld:
1.211 +
1.212 +http://homepage.mac.com/macg3/300-glibc-2.3.6-configure-patch-OSX.patch
1.213 +
1.214 +(or see below, at the end of this file)
1.215 +
1.216 +---------
1.217 +
1.218 +Okay, done setting up crosstool...now...
1.219 +
1.220 +./ct-ng build
1.221 +
1.222 +Sit back, relax, wait a while. Crosstool-ng will do the rest, automatically
1.223 +downloading tarballs, patching them, installing them. Could take quite a long
1.224 +time. The actual compiling took about 30 minutes on my older MacBook Pro. When
1.225 +you're done you have a cross compiler on your disk image that you named
1.226 +"Crosstool". Look in there and you're all set!
1.227 +
1.228 +So whenever you want to use the cross compiler, you need to mount this disk
1.229 +image. You could also create an actual partition on your computer that is
1.230 +Mac OS X extended case-sensitive if you wish. Then you don't need the disk
1.231 +image.
1.232 +
1.233 +You can delete the CrosstoolCompile disk image. It was just used temporarily
1.234 +while compiling everything.
1.235 +
1.236 +Note that I'm pretty sure gcc 4.1.2 has a bug in assembly generation that will
1.237 +cause Qt 4.5 to segfault. I'm fairly sure I saw this problem before with 4.1.2.
1.238 +I know for a fact that gcc 4.3.3 has the bug. This bug report:
1.239 +http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39429 has the details. I adapted the
1.240 +patch at the bottom to work with gcc 4.3.3. you might be able to apply it to
1.241 +other gcc versions. Not sure. I think 4.0.4 does not have this bug so you might
1.242 +even try compiling 4.0.4 instead of 4.1.2. Lots of options. Hope this helps,
1.243 +I've struggled with this stuff a lot but it's so convenient to have a native
1.244 +OS X toolchain!
1.245 +
1.246 +
1.247 +Patch
1.248 +-----
1.249 +
1.250 +Here is the afore-mentioned patch:
1.251 +
1.252 +---8<---
1.253 +Mac OS X fails configuring because its included binutils kind of suck.
1.254 +This patch makes the glibc 2.3.6 configure script ignore the
1.255 +installed version of as and ld. It just makes the configure
1.256 +script believe that it's as version 2.13 and ld 2.13.
1.257 +
1.258 +Made on 2009-08-08 by Doug Brown
1.259 +
1.260 +--- glibc-2.3.6/configure.orig 2009-08-08 10:40:10.000000000 -0700
1.261 ++++ glibc-2.3.6/configure 2009-08-08 10:42:49.000000000 -0700
1.262 +@@ -3916,10 +3916,7 @@ else
1.263 + echo $ECHO_N "checking version of $AS... $ECHO_C" >&6
1.264 + ac_prog_version=`$AS -v </dev/null 2>&1 | sed -n 's/^.*GNU assembler.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
1.265 + case $ac_prog_version in
1.266 +- '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
1.267 +- 2.1[3-9]*)
1.268 +- ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
1.269 +- *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
1.270 ++ *) ac_prog_version="2.13, ok"; ac_verc_fail=no;;
1.271 +
1.272 + esac
1.273 + echo "$as_me:$LINENO: result: $ac_prog_version" >&5
1.274 +@@ -3977,10 +3974,7 @@ else
1.275 + echo $ECHO_N "checking version of $LD... $ECHO_C" >&6
1.276 + ac_prog_version=`$LD --version 2>&1 | sed -n 's/^.*GNU ld.* \([0-9][0-9]*\.[0-9.]*\).*$/\1/p'`
1.277 + case $ac_prog_version in
1.278 +- '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
1.279 +- 2.1[3-9]*)
1.280 +- ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
1.281 +- *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
1.282 ++ *) ac_prog_version="2.13, ok"; ac_verc_fail=no;;
1.283 +
1.284 + esac
1.285 + echo "$as_me:$LINENO: result: $ac_prog_version" >&5
1.286 +---8<---