configure: Do not pass '-Wextra' option to GCC if unsupported
authorIvan Maidanski <ivmai@mail.ru>
Tue, 13 Dec 2011 06:36:24 +0000 (10:36 +0400)
committerIvan Maidanski <ivmai@mail.ru>
Tue, 13 Dec 2011 10:40:39 +0000 (14:40 +0400)
commitbcf29faf2e5cab7ab836ff5147d2fd3a73ffc426
treead28bf4d9e60aca6832e2042edf351404542c60c
parente8dde3446c1c92210414a73cb7198da6371485aa
configure: Do not pass '-Wextra' option to GCC if unsupported

* configure.ac (WEXTRA): New variable (set to "-Wextra" if the latter
is supported by GCC, otherwise to "-W").
* configure.ac (CFLAGS): Use WEXTRA variable.
configure.ac