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Date: Wed, 23 Oct 2013 07:07:24 -0400
From: Andrew Bradford <andrew@...dfordembedded.com>
To: musl@...ts.openwall.com
CC: CLFS development discussion <clfs-dev@...ts.cross-lfs.org>,
CLFS Support <clfs-support@...ts.cross-lfs.org>,
Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
Gregor Richards <gr@...due.edu>
Subject: Re: Re: [Clfs-dev] CLFS embedded book switches to musl-libc
On 10/22/13 17:08, Rich Felker wrote:
> On Tue, Oct 22, 2013 at 02:58:24PM -0400, Kevyn-Alexandre Paré wrote:
>> For the musl installation [2], the make install have an error that
>> seem to be fix with the next command you propose:
>>
>> ../tools/install.sh -D -m 644 lib/crt1.o
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/crt1.o
>> ../tools/install.sh -D -m 644 lib/Scrt1.o
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/Scrt1.o
>> ../tools/install.sh -D -m 644 lib/crti.o
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/crti.o
>> ../tools/install.sh -D -m 644 lib/crtn.o
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/crtn.o
>> ../tools/install.sh -D -m 644 lib/libc.a
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/libc.a
>> ../tools/install.sh -D -m 755 lib/libc.so
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/libc.so
>> ../tools/install.sh -D -m 644 lib/libm.a
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/libm.a
>> ../tools/install.sh -D -m 644 lib/librt.a
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/librt.a
>> ../tools/install.sh -D -m 644 lib/libpthread.a
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/libpthread.a
>> ../tools/install.sh -D -m 644 lib/libcrypt.a
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/libcrypt.a
>> ../tools/install.sh -D -m 644 lib/libutil.a
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/libutil.a
>> ../tools/install.sh -D -m 644 lib/libxnet.a
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/libxnet.a
>> ../tools/install.sh -D -m 644 lib/libresolv.a
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/libresolv.a
>> ../tools/install.sh -D -m 644 lib/libdl.a
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/libdl.a
>> ../tools/install.sh -D -l
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/lib/libc.so
>> /lib/ld-musl-arm.so.1 || true
>> ln: failed to create symbolic link `/lib/ld-musl-arm.so.1.tmp.47054':
>> Permission denied
>> ../tools/install.sh -D -m 644 arch/arm/bits/alltypes.h
>> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/include/bits/alltypes.h
>
> This (attempting to install the dynamic linker symlink in /lib) is
> caused by specifying the installation location
> /mnt/clfs/cross-tools/armv7a-unknown-linux-musleabi/ as part of the
> prefix rather than as the DESTDIR at "make install" time. If this is
> part of the installation into the new filesystem root that will be
> later used as chroot or the root for booting, DESTDIR is the proper
> approach. If this is just a temporary musl build for use in
> bootstrapping, the current --prefix is fine, but you also need either
> --syslibdir or --disable-shared.
Yes, I had run into this issue as well. I had just missed that
permission denied failure in haste and thus my brute force symlink.
The goal is to build a cross toolchain which is stand alone but from
which the libs are copied into the actual target which will boot. This
is roughly what buildroot does when using an external toolchain (I believe).
In this case, using --disable-shared does not seem reasonable as I'd
like to have shared libs. I'll take a look at --syslibdir and DESTDIR
and see if they accomplish what I think I want. The symlink from ld to
libc.so was my quick work around and produces a system which boots and
runs fine as far as I can tell but which now seems as though it may not
be the best method (besides my symlink command not covering all cases
for the archs used in the CLFS book or supported by musl).
Thanks,
Andrew
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