'--enable-tunables'
Tunables support allows additional library parameters to be
customized at runtime. This is an experimental feature and affects
- startup time and is thus disabled by default.
+ startup time and is thus disabled by default. This option can take
+ the following values:
+
+ 'no'
+ This is the default if the option is not passed to configure.
+ This disables tunables.
+
+ 'yes'
+ This is the default if the option is passed to configure.
+ This enables tunables and selects the default frontend
+ (currently 'valstring').
+
+ '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'.
'--build=BUILD-SYSTEM'
'--host=HOST-SYSTEM'