[pacman-dev] makepkg and (n)awk

[Allan McRae]

On 26/12/10 09:59, Nezmer wrote:
> Hi,
>
> In commit ef977865, awk was added as an external tool needed by makepkg.
>
> As you know, there is different awk implementations out there. nawk is
> the implementation shipped by default in non-GNU systems As far as I
> know.
>
> Unfortunately, awk usage in makepkg is not nawk-compatible.
>
> Command:
>
> %gawk '/^[[:space:]]*provides=/,/)/' B | sed "s/provides=/provides_list+=/"
>
> Output:
>
>   provides_list+=('p1' 'p2' '3') # comment
>
> Command:
>
> % awk '/^[[:space:]]*provides=/,/)/' B | sed "s/provides=/provides_list+=/"
>
> Output:
>
> awk: illegal primary in regular expression ) at
>   source line number 1
>   context is
>           >>>  /^[[:space:]]*provides=/,/)/<<<
>
>
> ======================
>
> Anyway, what is awk doing here? Is it the same as:
> egrep '^\s*provides=\(.*\)'
>

No its not...  it handles depends/provides arrays going over multiple lines.

Perhaps there is a way that both gawk/nawk can do that using the same 
regex.  That would be the best solution.   Otherwise we need to either 
use gawk explicitly or do some autoconf stuff...

Allan