On Fri, Oct 29, 2010 at 03:43:57PM +0200, Matthias Klose wrote: > For wheezy I'm planning to change the linking behaviour for DSOs (turning > on --as-needed and --no-copy-dt-needed-entries. The rationale is > summarized in http://wiki.debian.org/ToolChain/DSOLinking. I would like > to know about issues with these changes on some of the Debian ports, and > if we need to disable one of these changes on some port.
While I understand the rationale for --no-copy-dt-needed-entries for preventing encapsulation violations via indirect linking, I don't agree with the use of --as-needed *at all*. If a library has been explicitly linked in, it shouldn't be removed. This is an issue for fixing in individual packages, not in the toolchain. I can understand on using it on a per-package basis, but not in the actual toolchain defaults. The compiler and linker *should not be second-guessing the user*. This can break perfectly legitimate code making use of ELF constructors and other features which won't be picked out just by looking at symbol usage. Thanks, Roger -- .''`. Roger Leigh : :' : Debian GNU/Linux http://people.debian.org/~rleigh/ `. `' Printing on GNU/Linux? http://gutenprint.sourceforge.net/ `- GPG Public Key: 0x25BFB848 Please GPG sign your mail.
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