On Wed, Mar 16, 2011 at 22:29:43 (CET), Sean McGovern wrote:
> No, this is a patch I've had locally for ages now and just wanted to make
> sure I didn't lose it and also gauge(sp?) reaction to have it committed
> publicly.
>
> I use it when I build MPlayer OS X packages -- it saves me having to use
> 'install_name_tool' manually after the build completes.
please don't top-post
> -- Sean
> -----Original Message-----
> From: Måns Rullgård <m...@mansr.com>
> Sender: libav-devel-boun...@libav.org
> Date: Wed, 16 Mar 2011 21:19:30
> To: libav development<libav-devel@libav.org>
> Reply-To: libav development <libav-devel@libav.org>
> Subject: Re: [libav-devel] [PATCH 2/2] Darwin/MacOS X: allow user-specified
> library install path
>
> Sean McGovern <gsean...@gmail.com> writes:
>
>> 2011/3/15 Måns Rullgård <m...@mansr.com>:
>>> Sean McGovern <gsean...@gmail.com> writes:
>>>
>>>> In Darwin/MacOS X, it is advantageous to be able to set a
>>>> custom library install path when embedding a library alongside or
>>>> in a path relative to it's calling binary application
>>>> This allows constructions such as:
>>>> @executable_path/lib
>>>> which is evaluated by dyld at runtime.
>>>> ---
>>>> configure | 3 ++-
>>>> 1 files changed, 2 insertions(+), 1 deletions(-)
>>>>
>>>> diff --git a/configure b/configure
>>>> index 49f59e0..85c93c4 100755
>>>> --- a/configure
>>>> +++ b/configure
>>>> @@ -2386,7 +2386,7 @@ case $target_os in
>>>> enable malloc_aligned
>>>> gas="gas-preprocessor.pl $cc"
>>>> enabled ppc && add_asflags -force_cpusubtype_ALL
>>>> - SHFLAGS='-dynamiclib -Wl,-single_module
>>>> -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
>>>> + SHFLAGS='-dynamiclib -Wl,-single_module
>>>> -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
>>>> enabled x86_32 && SHFLAGS='$(SHFLAGS)
>>>> -Wl,-read_only_relocs,suppress'
>>>> strip="${strip} -x"
>>>> add_ldflags -Wl,-dynamic,-search_paths_first
>>>> @@ -3215,6 +3215,7 @@ INCDIR=\$(DESTDIR)$incdir
>>>> BINDIR=\$(DESTDIR)$bindir
>>>> DATADIR=\$(DESTDIR)$datadir
>>>> MANDIR=\$(DESTDIR)$mandir
>>>> +INSTALL_NAME_DIR=${INSTALL_NAME_DIR:=\$(SHLIBDIR)}
>>>> SRC_PATH="$source_path"
>>>> SRC_PATH_BARE=$source_path
>>>> BUILD_ROOT="$PWD"
>>>> --
>>>> 1.7.4
>>>
>>> Could you explain what the -install_name flag does or point out some
>>> documentation for same?
>>>
>> Sure, here's the manual page:
>> http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man1/ld.1.html
>
> So it's a primitive form of the ELF SONAME field. We should probably do
> something generic that covers all lib formats. I can imagine cases
> where setting a custom ELF SONAME would be useful too. Do you need this
> urgently?
It seems pretty similar to GNU's -rpath-link option, right?
If yes, I'd suggest to add some configure switch that enables this
behavior transparently.
--
Gruesse/greetings,
Reinhard Tartler, KeyID 945348A4
_______________________________________________
libav-devel mailing list
libav-devel@libav.org
https://lists.libav.org/mailman/listinfo/libav-devel
