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Date: Sat, 18 Jan 2020 00:14:47 -0500
From: Rich Felker <dalias@...c.org>
To: musl@...ts.openwall.com
Subject: Re: Absolute symlink breaks cross compilation
On Sat, Jan 18, 2020 at 02:24:49AM +0300, Андрей Аладьев wrote:
> Hello. Gentoo users find that it is not possible to cross compile musl. See
> here https://bugs.gentoo.org/645626 more details.
>
> I am sending to you proposed patch that is related to upstream. Please keep
> all installed symlinks relative. Thank you.
> diff --git a/Makefile b/Makefile
> index bd8f5c38..81bf33d5 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -209,7 +209,7 @@ $(DESTDIR)$(includedir)/%: $(srcdir)/include/%
> $(INSTALL) -D -m 644 $< $@
>
> $(DESTDIR)$(LDSO_PATHNAME): $(DESTDIR)$(libdir)/libc.so
> - $(INSTALL) -D -l $(libdir)/libc.so $@ || true
> + $(INSTALL) -D -l $$(realpath --no-symlinks --relative-to=$$(dirname $@) $(DESTDIR)$(libdir)/libc.so) $@ || true
>
> install-libs: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(if $(SHARED_LIBS),$(DESTDIR)$(LDSO_PATHNAME),)
>
I don't understand what you mean by it "breaks cross compilation". The
ldso link produced is not used for compiling anything; it's only used
for executing programs, which you don't do when cross compiling musl
or cross compiling applications against it. The link is setup to be
installed on the $host, not to be used on the $build where it's not
needed.
Could you could explain what specifically you're trying to do that's
not working as desired?
Rich
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