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-rw-r--r--gcc/doc/install.texi8
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index 2ec79c72044..683c82b4805 100644
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -309,7 +309,9 @@ implies that the host defaults to @var{target}.
@heading Options specification
Use @var{options} to override several configure time options for
-GCC@. A partial list of supported @var{options}:
+GCC@. A list of supported @var{options} follows; @command{configure
+--help} may list other options, but those not listed below may not
+work and should not normally be used.
@table @code
@item --prefix=@var{dirname}
@@ -711,6 +713,10 @@ inferior @code{catgets} interface, the GCC build procedure normally
ignores @code{catgets} and instead uses GCC's copy of the GNU
@code{gettext} library. The @option{--with-catgets} option causes the
build procedure to use the host's @code{catgets} in this situation.
+
+@item --with-system-zlib
+Use installed zlib rather than that included with GCC@. This option
+only applies if the Java front end is being built.
@end table
Some options which only apply to building cross compilers: