Add "configure" script command.

[chandlerc@…]

The vast majority of packages in the *nix world use some form of "configure" script. Would it be useful to have a <c:configure> command to call this script? It can be done as is by the following:

<sh:exec file="./configure" args="--quiet CFLAGS=-O3 CXXFLAGS=-O2">

However this is understandably awkward, and needs fancy quoting practices to include more than one CFLAG.

[chandlerc@…]

My proposed syntax is:

<c:configure cflags="..." cxxflags="..." with="foo, bar, foobar" enable="foo, bar, foobar" />

Which would result in the following command being executed:

# ./configure --quiet --with-foo --with-bar --with-foobar --enable-foo --enable-bar --enable-foobar CFLAGS="..." CXXFLAGS="..."

Other arguments could perhaps be without and disable. Some other variable-setting arguments should also be provided.

[cmlenz]

Implemented in [247].

Note that features in with/without and packages in enable/disable are simply space separated.