iv. Host System Requirements

You should be able to build a CLFS system from just about any Unix-type operating system. Your host system should have the following software with the minimum versions indicated. Also note that many distributions will place software headers into separate packages, often in the form of “[package-name]-devel” or “[package-name]-dev”. Be sure to install those if your distribution provides them.

To see whether your host system has all the appropriate versions, create and run the following script. Read the output carefully for any errors, and make sure to install any packages that are reported as not found.

cat > version-check.sh << "EOF"

# Simple script to list version numbers of critical development tools

bash --version | head -n1 | cut -d" " -f2-4
echo -n "Binutils: "; ld --version | head -n1 | cut -d" " -f3-
bison --version | head -n1
bzip2 --version 2>&1 < /dev/null | head -n1 | cut -d" " -f1,6-
echo -n "Coreutils: "; chown --version | head -n1 | cut -d")" -f2
diff --version | head -n1
find --version | head -n1
gawk --version | head -n1
gcc --version | head -n1
g++ --version | head -n1
ldd $(which ${SHELL}) | grep libc.so | cut -d ' ' -f 3 | ${SHELL} | head -n 1 | cut -d ' ' -f 1-7
grep --version | head -n1
gzip --version | head -n1
uname -s -r
make --version | head -n1
tic -V
patch --version | head -n1
sed --version | head -n1
tar --version | head -n1
makeinfo --version | head -n1
xz --version | head -n1
echo 'main(){}' | gcc -v -o /dev/null -x c - > dummy.log 2>&1
if ! grep -q ' error' dummy.log; then
  echo "Compilation successful" && rm dummy.log
  echo 1>&2  "Compilation FAILED - more development packages may need to be \
installed. If you like, you can also view dummy.log for more details."

bash version-check.sh 2>errors.log &&
[ -s errors.log ] && echo -e "\nThe following packages could not be found:\n$(cat errors.log)"