`install' rule uses non-portable construct

[Alexandre Oliva]

$(cmd) is not portable shell code; `cmd` is portable (as long as there
is no nesting).  It's ill-advised to use non-portable shell code in
Makefile (as is the case of GNU electric) or configure scripts.

So far, I've been surviving with make SHELL=/path/to/bash, but someone
may not have bash or may not realize this trick is needed.

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  address@hidden, redhat.com}
CS PhD student at IC-Unicamp        address@hidden, gnu.org}
Free Software Evangelist    *Please* write to mailing lists, not to me