New: Unable to use Ubuntu 11.10 arm cross compiler

https://bugs.busybox.net/show_bug.cgi?id=4399

Summary: Unable to use Ubuntu 11.10 arm cross compiler
Product: buildroot
Version: unspecified
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P5
Component: Other
AssignedTo: unassigned at buildroot.uclibc.org
ReportedBy: fenixk19 at mail.ru
CC: buildroot at uclibc.org
Estimated Hours: 0.0

Attempt to use ubuntu arm cross-compiler (package gcc-4.6-arm-linux-gnueabi) as an external toolchain fails with the following message:

Checking external toolchain settings
Incorrect selection of the C library
make: *** [/home/fenixk19/Development/samsung/OS/buildroot/output/stamps/ext-toolchain-checked] ?????? 255

Thats because there is a string in ext-tool.mk:
SYSROOT_DIR=readlink -f $$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) -print-file-name=libc.a) |sed -r -e 's:usr/lib/libc\.a::;' ;

But "arm-linux-gnueabi-gcc -print-file-name=libc.a" returns "/usr/lib/gcc/arm-linux-gnueabi/4.6.1/../../../../arm-linux-gnueabi/lib/../lib/libc.a"

So sed works with wrong pattern here. This should be 's:lib/libc\.a::;' for Ubuntu.

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https://bugs.busybox.net/show_bug.cgi?id=4399

--- Comment #1 from Alexander <[email protected]> 2011-10-29 15:36:25 UTC --- Created attachment 3703
--> https://bugs.busybox.net/attachment.cgi?id=3703
A patch, can be used as workaround

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https://bugs.busybox.net/show_bug.cgi?id=4399

Thomas Petazzoni <[email protected]> changed:

What |Removed |Added
----------------------------------------------------------------------------

             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID

--- Comment #2 from Thomas Petazzoni <[email protected]> 2011-10-30 20:27:21 UTC --- I had the same problem trying to use the Ubuntu ARM cross-compiler.
Unfortunately, while it allows to go a bit further, it doesn't fix the fact
that the Ubuntu ARM cross-compiler is not a *pure* toolchain: it contains many
more libraries and utilities compiled for the target than a normal toolchain,
and this doesn't play well with build systems, including Buildroot.

For that reason, we do not support building with the Ubuntu ARM cross-compiler at the moment. Either build your toolchain with Buildroot or Crosstool-NG, or get a pre-compiled one from CodeSourcery (which offers pure toolchains).

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