1 # Setup functions and settings used in subdirectories.
3 # Their setup.sh script sources this file.
6 # csh gives the error "Unknown colorls variable `su'." when used with newer
7 # options supported by zsh or GNU ls.
10 # Get path to m4 because it's later redefined as function.
14 # Check if the given program is installed. Returns 0 if it exists, 1
15 # otherwise; so it can be used in if.
17 which $1 | grep -E '^/' > /dev/null
20 # Creates a symbolic link for file $1 in dirname of $2 with name of basenmae
23 # `./link.sh example ~/.examplerc` creates a symbolic link to example
24 # (wherever it is located) in ~/ named .examplerc.
26 # Get all necessary paths.
29 source=`echo -n "$pwd/$1" | sed "s|$base/||"`
30 target=`basename "$2"`
32 # Go to the directory where the link is going to be created.
35 # Abort if the target file exists and is no symbolic link. Prevents
36 # overwriting real files.
37 if [ -e "$target" -a ! -h "$target" ]; then
38 echo "link(): target '$target' exists already and is no symbolic link!" >&2
42 # Make sure the source exists.
43 if [ ! -e "$source" ]; then
44 echo "link(): source '$source' doesn't exist!" >&2
48 # Create the new symbolic link; remove the old one if necessary.
49 echo "link(): linking '$source' to '$target'"
51 ln -s "$source" "$target"
53 # Go back to the directory where we were before.
56 unset pwd base source target
59 # m4 wrapper which uses $1.m4 as template file, feeds it to m4 and writes it
60 # to $1 with a warning at the beginning to not edit the generated file.
62 # All arguments (except the first which is the filename) are passed to m4.
64 # First argument is file name.
68 # Write a warning to the generated file.
69 echo "###################################" > $file
70 echo "# WARNING! DO NOT EDIT THIS FILE! #" >> $file
71 echo "###################################" >> $file
73 echo "# It was generated from $file.m4 on `date`." >> $file
76 # Process $1.m4 with m4 using the given options.
77 echo "m4(): generating '$file' from '$file.m4' with options '$*'"
78 $m4 $* $file.m4 >> $file