Building GDB always builds the bundles libreadline.a, even if use of the libreadline installed on the system was requested with --with- system-readline.
The change below is for binutils-gdb’s/configure.ac, which is maintained by gcc. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87741 [GCC] and https://sourceware.org/bugzilla/show_bug.cgi?id=18632 [GDB] for details. diff --git a/configure.ac b/configure.ac --- a/configure.ac +++ b/configure.ac @@ -253,6 +253,12 @@ if test x$with_system_zlib = xyes ; then noconfigdirs="$noconfigdirs zlib" fi +# Don't compile the bundled readline/libreadline.a in gdb-binutils if +# --with-system-readline is provided. +if test x$with_system_readline = xyes ; then + noconfigdirs="$noconfigdirs readline" +fi + # some tools are so dependent upon X11 that if we're not building with X, # it's not even worth trying to configure, much less build, that tool.
