From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
To: buildroot@busybox.net
Subject: [Buildroot] external toolchain and sysroot
Date: Thu, 25 Mar 2010 23:34:52 +0100 [thread overview]
Message-ID: <20100325233452.3794166b@surf> (raw)
In-Reply-To: <hog8rg$sis$1@dough.gmane.org>
On Thu, 25 Mar 2010 18:08:49 +0000 (UTC)
Grant Edwards <grant.b.edwards@gmail.com> wrote:
> Based on my sample of three packages (two had the problem), I'm
> guessing it's a very common problem. It looks like the buildroot
> developers use external toolchains that don't require a --sysroot
> option.
They do. What we do to support external toolchains is :
* We copy the full sysroot of the toolchain into $(STAGING_DIR)
* We copy just the C library and related libraries from the sysroot to
the $(TARGET_DIR)
* We pass --sysroot $(STAGING_DIR) to every gcc/ld invocation, so that
gcc/ld find the libraries and header files correctly.
Actually, this mechanism *only* works with toolchain supporting
--sysroot. Toolchains *not* supporting --sysroot are rejected (see
toolchain/external-toolchain/ext-tool.mk).
Regards,
Thomas
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
next prev parent reply other threads:[~2010-03-25 22:34 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-25 15:28 [Buildroot] external toolchain and sysroot Yury Luneff
2010-03-25 16:14 ` Grant Edwards
2010-03-25 17:12 ` Yury Luneff
2010-03-25 17:16 ` Yury Luneff
2010-03-25 18:08 ` Grant Edwards
2010-03-25 22:34 ` Thomas Petazzoni [this message]
2010-03-26 1:04 ` Grant Edwards
2010-03-26 19:24 ` Thomas Petazzoni
2010-03-27 1:10 ` Grant Edwards
2010-03-27 8:22 ` Thomas Petazzoni
2010-03-27 15:05 ` Grant Edwards
2010-04-14 13:42 ` Grant Edwards
2010-03-25 22:32 ` Thomas Petazzoni
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