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Building cross compilers for Cygwin
This howto provides step-by-step instructions on building Unix hosted
cross compilers for i585-cygwin32 (Cygwin) target. The instructions shown
here have been tested on a i686-pc-linux-gnu host, but should work on any
host that is well supported by GNU binutils and EGCS compiler.
TOC:
- Building CROSS Cygwin B20+ tools
- Building CROSS egcs-1.1.1 for Cygwin b20+
- Building NATIVE B20+ tools using CROSS tools just built.
- Building NATIVE egcs-1.1.1 tools using CROSS tools just built.
Last Modified: Wed Feb 17 21:56:13 CST 1999
============ Building CROSS Cygwin B20+ tools
Step 1: build the entire b20.1 cross-toolchain before you start with
egcs-1.1.1
1. Download the b20.1 source tree:
ftp://sourceware.cygnus.com/pub/cygwin/latest/dev-src.tar.bz2
2. unpack, configure and build:
$ mkdir /usr/local/src/cygwin-b20
$ cd /usr/local/src/cygwin-b20
$ bunzip2 -c /tmp/dev-src.tar.bz2 | tar -xf -
[ this will unpack everything under src subdirectory ]
$ mkdir CROSS
$ cd CROSS
$ ../src/configure --prefix=/usr/local/cygb20 --target=i586-cygwin32 -v
$ make > make.log 2>&1
[ the '2>&1' depends on your shell of course. check for errors . If OK ]
$ make install > install.log 2>&1
============ Building CROSS egcs-1.1.1 for Cygwin b20+
1. Download sources and patches:
ftp://egcs.cygnus.com/pub/egcs/releases/egcs-1.1.1/egcs-1.1.1.tar.bz2
ftp://ftp.xraylith.wisc.edu/pub/khan/gnu-win32/cygwin/egcs-1.1.1/patches/
Get the egcs-1.1.1-x86-win32-patches.tar.gz
2. Unpack, patch, prep:
$ cd /usr/local/src
$ bunzip2 -c /tmp/egcs-1.1.1.tar.bz2 | tar -xf -
Now patch time. If you look inside egcs-1.1.1-x86-win32-patches.tar.gz,
you'll see the actual patch file -- egcs-1.1.1-x86-win32.diff. This
is the file you need.
$ tar zxvf egcs-1.1.1-x86-win32-patches.tar.gz egcs-1.1.1-x86-win32.diff
$ mv egcs-1.1.1-x86-win32.diff /tmp
$ cd egcs-1.1.1
$ patch -p1 -s < /tmp/egcs-1.1.1-x86-win32.diff
3. Now build and install.
$ mkdir CROSS
$ cd CROSS
$ ../configure --prefix=/usr/local/cygb20 --target=i586-cygwin32 -v
$ cd gcc; make installdirs; cd ..
[ this step is important, otherwise libobjc, libstdc++ etc will fail ]
$ make > make.log 2>&1
[ the '2>&1' depends on your shell of course. check for errors . If OK ]
$ make install > install.log 2>&1
After you're done, add it to path (if you're using a bourne-shell
compatible, otherwise use csh syntax).
$ export PATH=$PATH:/usr/local/cygb20/bin
$ i586-cygwin32-gcc -v
[ should report egcs-1.1.1 etc ]
All the binaries for i586-cygwin32 target are prefixed with i586-cygwin32-
prefix.
============ Building NATIVE B20+ tools using CROSS tools just built.
Now if you want to build native tools on eg., a i686-pc-linux-gnu box with
the same pathnames that Cygnus uses:
$ cd /usr/local/src/cygwin-b20
$ mkdir NATIVE
$ cd NATIVE
$ ../src/configure --prefix=/Cygnus/cygwin-b20 \
--exec-prefix=/Cygnus/cygwin-b20/H-i586-cygwin32 \
--target=i586-cygwin32 --host=i586-cygwin32 \
--build=i686-pc-linux-gnu -v
$ make > make.log 2>&1
[ check for errors . If OK ]
============ Building NATIVE egcs-1.1.1 tools using CROSS tools just built.
Now if you want to build native tools on eg., a i686-pc-linux-gnu box with
the same pathnames that Cygnus uses:
$ cd /usr/local/src/egcs-1.1.1
$ mkdir NATIVE
$ cd NATIVE
$ ../configure --prefix=/Cygnus/cygwin-b20 \
--exec-prefix=/Cygnus/cygwin-b20/H-i586-cygwin32 \
--target=i586-cygwin32 --host=i586-cygwin32 \
--build=i686-pc-linux-gnu -v
$ make > make.log 2>&1
[ check for errors . If OK ]
Now of course, you may want to install it to a *DIFFERENT* location
than /Cygnus/cygwin-b20 on your Unix host before creating an archive
to copy to a Cygwin box. Let's say you first install it to /tmp/cygwin.
$ make prefix=/tmp/cygwin exec_prefix=/tmp/cygwin/H-i586-cygwin32 \
install > install.log 2>&1
$ cd /tmp/cygwin
$ tar zcvf /tmp/dev-cygwin-b20.tar.gz .
Copy /tmp/dev-cygwin-b20.tar.gz to your Cygwin box and unpack:
[win32]$ cd /Cygnus/cygwin-b20
[win32]$ tar zxvf /tmp/dev-cygwin-b20.tar.gz
The patches you added to egcs-1.1.1 also makes these binaries work no
matter where you install them (provided your Cygnus installation is
in /Cygnus/cygwin-b20):
[win32]$ mkdir /usr/local/egcs-1.1.1
[win32]$ cd /usr/local/egcs-1.1.1
[win32]$ tar zxvf /tmp/dev-cygwin-b20.tar.gz
===== THE END
For more information about Cygwin, see Cygnus's cygwin project page:
http://sourceware.cygnus.com/cygwin/
Latest version of this documentation, and other information related to
GNU tools on various types of windows32 system, is available from my
gnu-win32 page:
http://www.xraylith.wisc.edu/~khan/software/gnu-win32/
Last Modified: Wed Feb 17 21:56:13 CST 1999
Mumit Khan <khan@xraylith.wisc.edu>