From 198abcbb94618730dae1b3f4393efaa49e0ec8c7 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Mon, 11 Apr 2022 11:30:31 +0200 Subject: Default to --with-default-link=no (bug 25812) This is necessary to place the libio vtables into the RELRO segment. New tests elf/tst-relro-ldso and elf/tst-relro-libc are added to verify that this is what actually happens. The new tests fail on ia64 due to lack of (default) RELRO support inbutils, so they are XFAILed there. --- manual/install.texi | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'manual') diff --git a/manual/install.texi b/manual/install.texi index 29c52f2..fcfb690 100644 --- a/manual/install.texi +++ b/manual/install.texi @@ -117,6 +117,12 @@ problem and suppress these constructs, so that the library will still be usable, but functionality may be lost---for example, you can't build a shared libc with old binutils. +@item --with-default-link=@var{FLAG} +With @code{--with-default-link=yes}, the build system does not use a +custom linker script for linking shared objects. The default for +@var{FLAG} is the opposite, @samp{no}, because the custom linker script +is needed for full RELRO protection. + @item --with-nonshared-cflags=@var{cflags} Use additional compiler flags @var{cflags} to build the parts of the library which are always statically linked into applications and -- cgit v1.1