NB: Ripped (and modified) from : http://tredosoft.com/comment/reply/37
How to install TrueCrypt 4.3a on Fedora 7
We are going to compile TrueCrypt from source so first grab TrueCrypt's source code. When it's downloaded, extract the source code and navigate to the Linux folder :
tar xfz truecrypt-4.3a-source-code.tar.gz cd truecrypt-4.3a-source-code cd Linux
Truecrypt needs to compile a kernel module during the build process. Unfortunately the kernel headers included with Fedora 7 (in the kernel-devel package) are missing the dm.h header file which is needed for compiling the kernel module.
We need to download the source RPM for the kernel (it's roughly a 45MB download) and install it so we can get to the dm.h file. Since this is for the release version of Fedora 7 (which has the 2.6 kernel) the commands to get at the source would be...
su yumdownloader --source kernel ; mkdir /usr/src/redhat # May have to do this due to packaging problems rpm -ivh kernel-$(uname -r).src.rpm ; yum install sparse # May need this if rpmbuild complains ``rpmbuild -bp --target=noarch /usr/src/redhat/SPECS/kernel-2.6.spec ; there's a lot of activity at this point...` `; Now copy over the dm.h file into the right place... (make sure the kernel major-minor matches the current) : cp /usr/src/redhat/BUILD/kernel-2.6.22/linux-2.6.22.noarch/drivers/md/dm.h /usr/src/kernels/$(uname -r)-$(uname -m)/drivers/md/
Once we are done installing the source RPM we edit the
build.sh file located in TrueCrypt's Linux folder. To do this, change the line :
save and run `build.sh` as root to start the build process `su ./build.sh
still logged in as root run the install script and modprobe the kernel module, using an 'su -' login to set the root paths properly :
./install.sh /sbin/modprobe truecrypt
We successfully installed truecrypt!
To load this as a normal user, we need to create a mount point, and then use the truecrypt command with the --user-mount option :
mkdir /media/Fieldstone truecrypt --user-mount /media/1GB/Fieldstone.truecrypt /media/Fieldstone
Previously, to make this work, one needed to chown u+s /usr/bin/truecrypt (which was convenient, if a little insecure according to the truecrypt website). Now, with version 4.3a, this method of allowing a regular user to 'escalate' privileges to mount the volume doesn't work. So the user has to be made 'sudo' capable. As root, do '/usr/sbin/visudo' (ugg - I hate vi, try
export EDITOR=joe first to avoid using this). Navigate to the bottom of the file, (and, if in
vi hit 'i' for insert mode) and add :
where username is the user that will be using truecrypt. That should do the trick, and then the two commands :
truecrypt --user-mount /media/1GB/Fieldstone.truecrypt /media/Fieldstone truecrypt --dismount
should work. Phew!