* PR19871, description of --pie
@ 2024-02-29 22:54 Alan Modra
0 siblings, 0 replies; only message in thread
From: Alan Modra @ 2024-02-29 22:54 UTC (permalink / raw)
To: binutils
Say why we even mention shared libraries here (ET_DYN), and clarify
symbol resolution. There are of course many other ways that PIEs
resemble PDEs more closely than shared libraries.
PR 19871
* ld.texi (-pie): Clarify.
diff --git a/ld/ld.texi b/ld/ld.texi
index 3cba778c9fb..6f234752278 100644
--- a/ld/ld.texi
+++ b/ld/ld.texi
@@ -2298,12 +2298,13 @@ the i386 PE and ELF targetted ports of the linker.
@item -pie
@itemx --pic-executable
@cindex position independent executables
-Create a position independent executable. This is currently only supported on
-ELF platforms. Position independent executables are similar to shared
-libraries in that they are relocated by the dynamic linker to the virtual
-address the OS chooses for them (which can vary between invocations). Like
-normal dynamically linked executables they can be executed and symbols
-defined in the executable cannot be overridden by shared libraries.
+Create a position independent executable. This is currently only
+supported on ELF platforms. Position independent executables are
+relocated by the dynamic linker to the virtual address the OS chooses
+for them, which can vary between invocations. They are marked ET_DYN
+in the ELF file header, but differ from shared libraries in a number
+of ways. In particular, defined symbols in a PIE by default can not
+be overridden by another object as they can be in a shared library.
@kindex -no-pie
@item -no-pie
--
Alan Modra
Australia Development Lab, IBM
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2024-02-29 22:54 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-02-29 22:54 PR19871, description of --pie Alan Modra
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).