Bug 1315

Summary:	Allow use of older external toolchains without sysroot support
Product:	buildroot	Reporter:	Chris Seawood <cls>
Component:	Other	Assignee:	Thomas Petazzoni <thomas.petazzoni>
Status:	RESOLVED WONTFIX
Severity:	enhancement	CC:	buildroot
Priority:	P5
Version:	2010.02
Target Milestone:	2010.05
Hardware:	PC
OS:	Linux
Host:		Target:
Build:
Attachments:	v1.0

Description Chris Seawood 2010-03-16 00:36:30 UTC

I'm using buildroot to create packages that are binary compatible with the default rootfs provides in my Patriot Corza NAS.  As such, I'm unable to upgrade to a newer toolchain that supports --sysroot.

The attached patch updates package/Makefile.in, ext-tool.mk and various package .mks to allow buildroot to be built with an external toolchain that does not use --sysroot (gcc-3.4.6, in my case).  The use of --sysroot is now controlled by the BR2_TOOLCHAIN_EXTERNAL_SYSROOT option.  

Most of the other changes just involve passing TARGET_CONFIGURE_ENV to the configure or make calls for each package.

There's also a change to override the broken getline detection in sed when using an external glibc toolchain.

Comment 1 Chris Seawood 2010-03-16 04:39:44 UTC

Created attachment 1291 [details]
v1.0

Comment 2 Thomas Petazzoni 2010-03-16 07:42:50 UTC

Thanks for this patch.

In the past, we tried to handle toolchains not supporting --sysroot, but that proved to be very difficult with packages such as the Gtk stack or Qt. See for example the thread at http://lists.busybox.net/pipermail/buildroot/2008-November/023870.html or http://lists.busybox.net/pipermail/buildroot/2008-December/024147.html.

Does your patch works when compiling Qt, for example ?

Comment 3 Chris Seawood 2010-03-16 18:05:26 UTC

I have not systematically tested every package in the tree.  I only tested the ones needed for the Corza packages.  However, I just tried Qt and it built fine.

Comment 4 Thomas Petazzoni 2010-07-23 07:06:16 UTC

This is more an enhancement request than a real bug.

Comment 5 Thomas Petazzoni 2012-07-20 08:22:54 UTC

Two years later, sysroot capable toolchains are much more common, and we definitely don't want to add the complexity to add non-sysrooted toolchains into Buildroot.