Remove --enable-tunables configure option

And make always supported.  The configure option was added on glibc 2.25
and some features require it (such as hwcap mask, huge pages support, and
lock elisition tuning).  It also simplifies the build permutations.

Changes from v1:
 * Remove glibc.rtld.dynamic_sort changes, it is orthogonal and needs
   more discussion.
 * Cleanup more code.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>

1 files changed, 0 insertions, 19 deletions

diff --git a/INSTALL b/INSTALL
index 3253570..b406a11 100644
--- a/INSTALL
+++ b/INSTALL
@@ -228,25 +228,6 @@ if 'CFLAGS' is specified it must enable optimization.  For example:
      By default for x86_64, the GNU C Library is built with the vector
      math library.  Use this option to disable the vector math library.
 
-'--enable-tunables'
-     Tunables support allows additional library parameters to be
-     customized at runtime.  This feature is enabled by default.  This
-     option can take the following values:
-
-     'yes'
-          This is the default if no option is passed to configure.  This
-          enables tunables and selects the default frontend (currently
-          'valstring').
-
-     'no'
-          This option disables tunables.
-
-     'valstring'
-          This enables tunables and selects the 'valstring' frontend for
-          tunables.  This frontend allows users to specify tunables as a
-          colon-separated list in a single environment variable
-          'GLIBC_TUNABLES'.
-
 '--disable-crypt'
      Do not install the passphrase-hashing library 'libcrypt' or the
      header file 'crypt.h'.  'unistd.h' will still declare the function