New configure option --disable-crypt.

Some Linux distributions are experimenting with a new, separately
maintained and hopefully more agile implementation of the crypt
API.  To facilitate this, add a configure option which disables
glibc's embedded libcrypt.  When this option is given, libcrypt.*
and crypt.h will not be built nor installed.

1 files changed, 11 insertions, 0 deletions

diff --git a/manual/install.texi b/manual/install.texi
index 4bbbfcffa5..422da1447e 100644
--- a/manual/install.texi
+++ b/manual/install.texi
@@ -230,6 +230,17 @@ libnss_nisplus are not built at all.
 Use this option to enable libnsl with all depending NSS modules and
 header files.
 
+@item --disable-crypt
+Do not install the passphrase-hashing library @file{libcrypt} or the
+header file @file{crypt.h}.  @file{unistd.h} will still declare the
+function @code{crypt}.  Using this option does not change the set of
+programs that may need to be linked with @option{-lcrypt}; it only
+means that @theglibc{} will not provide that library.
+
+This option is for hackers and distributions experimenting with
+independently-maintained implementations of libcrypt.  It may become
+the default in a future release.
+
 @item --disable-experimental-malloc
 By default, a per-thread cache is enabled in @code{malloc}.  While
 this cache can be disabled on a per-application basis using tunables