Re: [PATCH] ld.so.8: add some multi-arch notes, linker paths are quite varied (but standardized to each arch)

[walter harms <wharms-fPG8STNUNVg@public.gmane.org>]

Am 31.03.2015 22:52, schrieb Shawn Landden:
> I started a multiarch.7 man-page, but I am not sure it belongs in man-pages...
> at least we should not cover all the package manager details.
> 
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> .\"
> .TH NPTL 7 2015-03-31 "Linux" "Linux Programmer's Manual"
> .SH NAME
> multiarch \- Multiarch support
> .SH DESCRIPTION
> Multiarch
> is a way of installing multiple binary targets (such as i386-linux-gnu and
> amd64-linux-gnu) on one
> .BR hier (7)
> filesystem, which originated in (but is not limited to)
> Debian and Ubuntu.
> .\"
> .SS Overview and scope
> Multiarch allows binaries of many ABI targets to co-exist on the same system.
> Through the use of
> .BR qemu-user-static (1)
> and
> .BR binfmt.d (5)
> it is even possible to run targets that are not natively runnable. It also can
> be used for cross-compilation.
> .sp
> The current spec does not address having multiple binaries of the same name, and
> thus does not effect
> .BR path_resolution (7)
> .
> .\"
> .SS Library paths
> .IR /lib/${TRIPLET}
> then
> .IR /usr/lib/${TRIPLET}
> then
> .IR /lib/
> then
> .IR /usr/lib/
> .\"
> .SS Include paths
> .IR /lib/include/${TRIPLET}
> then
> .IR /lib/include/
> then
> .IR /usr/lib/include/${TRIPLET}
> then
> .IR /usr/lib/include/
> .\"
> .SS Existing triplets
> The multiarch triplet is a normalized GNU triplet. 
> +               "/usr/lib/x86_64-linux-gnu/", "/lib/x86_64-linux-gnu/",
> +               "/usr/lib/i386-linux-gnu/", "/lib/i386-linux-gnu/",
> +               "/usr/lib/arm-linux-gnueabihf/", "/lib/arm-linux-gnueabihf/",

This is a very long list and will never be complete. You can drop may lines
by writing: "For example:" and explain in a few words what a "normalized GNU triplet"
is.

just my 2 cents,
re,
 wh


> +               "/usr/lib/arm-linux-gnueabi/", "/lib/arm-linux-gnueabi/",
> +               "/usr/lib/aarch64-linux-gnu/", "/lib/aarch64-linux-gnu/",
> +               "/usr/lib/ia64-linux-gnu/", "/lib/ia64-linux-gnu/",
> +               "/usr/lib/mips-linux-gnu/", "/lib/mips-linux-gnu/",
> +               "/usr/lib/mipsel-linux-gnu/", "/lib/mipsel-linux-gnu/",
> +               "/usr/lib/powerpc-linux-gnu/", "/lib/powerpc-linux-gnu/",
> +               "/usr/lib/ppc64-linux-gnu/", "/lib/ppc64-linux-gnu/",
> +               "/usr/lib/s390-linux-gnu/", "/lib/s390-linux-gnu/",
> +               "/usr/lib/s390x-linux-gnu/", "/lib/s390x-linux-gnu/",
> +               "/usr/lib/sh4-linux-gnu/", "/lib/sh4-linux-gnu/",
> +               "/usr/lib/sparc-linux-gnu/", "/lib/sparc-linux-gnu/",
> +               "/usr/lib/sparc64-linux-gnu/", "/lib/sparc64-linux-gnu/",
> +               "/usr/lib/x86_64-linux-gnux32/", "/lib/x86_64-linux-gnux32/",
> .\"
> .SH CONFORMING TO
> https://wiki.ubuntu.com/MultiarchSpec
> https://wiki.ubuntu.com/MultiarchCross
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