RTEMS 4.5.0 On-Line Library

Installing Cygwin32 B19

Getting Started with RTEMS for C/C++ Users

7.2.2: Installing Cygwin32 B19

This section describes the process of installing the version B19 of the Cygwin32 environment. It assumes that this toolset is installed in a directory referred to as <RTOS>.

Execute cdk.exe. These instructions assume that you install Cygwin32 under the <RTOS>\cygnus\b19 directory.
Execute Cygwin.bat (either on the start menu or under <RTOS>\cygnus\b19).
At this point, you are at the command line of bash, a Unix-like shell. You have to mount the "/" directory. Type:
```
umount /
mount -b <RTOS> /
```
For example, the following sequence mounts the E:\unix as the root directory for the Cygwin32 environment. Note the use of two \s when specifying DOS paths in bash:
```
umount /
mount -b e:\\unix /
```

Create the /bin, /tmp, /source and /build directories.

mkdir /bin
mkdir /tmp
mkdir /source
mkdir /build
mkdir /build/binutils
mkdir /build/gcc

The light Bourne shell provided with Cygwin B19 is buggy. You should copy it to a fake name and copy bash.exe to sh.exe:
```
cd <RTOS>/cygnus/b19/H-i386-cygwin32/bin
mv sh.exe old_sh.exe
cp bash.exe sh.exe
```
The Bourne shell has to be present in /bin directory to run shell scripts properly:
```
cp <RTOS>/cygnus/b19/H-i386-cygwin32/bin/sh.exe /bin
cp <RTOS>/cygnus/b19/H-i386-cygwin32/bin/bash.exe /bin
```
Open the file /cygnus/b19/H-i386-cygwin32/lib/gcc-lib/i386-cygwin32/2.7-b19/specs, and append
```
-ladvapi32
```
to the following line:
```
-lcygwin %{mwindows:-luser32 -lgdi32 -lcomdlg32} -lkernel32
```

At this point, you have a native installation of Cygwin32 and are ready to proceed to building a cross-compiler.

Getting Started with RTEMS for C/C++ Users