From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Thu, 27 Mar 2014 08:21:28 +0100 Subject: [Buildroot] NPTL compile error without MMU (ARM) In-Reply-To: <5333CF21.8040503@samsung.com> References: <5333C645.8000203@samsung.com> <20140327074058.4059aa56@skate> <5333CF21.8040503@samsung.com> Message-ID: <20140327082128.09a2a102@skate> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Dear Sangjung, On Thu, 27 Mar 2014 16:11:29 +0900, Sangjung wrote: > On 03/27/2014 03:40 PM, Thomas Petazzoni wrote: > > Thanks for your report. The problem really looks like a uClibc problem, > > so I would suggest you to take the uClibc configuration file in > > output/build/uclibc-/.config, and sent the report to the > > uClibc developers. I am also on the uClibc mailing list, so I will be > > able to add additional Buildroot-specific details if requested by the > > uClibc developers. > > Thank you for your quick reply. > I will also report this issue to uClibc mailing list ASAP. Excellent, thanks! > > Outside of this, it is interesting to see that you are looking at the > > ARM non-MMU support. Do you have an actual hardware platform? In fact, > > I have been interested by looking into ARM non-MMU support in Buildroot > > for a long time, but I have never found a hardware platform, or > > emulated platform, to test things on. If this is something you can help > > with, I'm pretty sure the ARM non-MMU support would make more > > significant progress. > > Our target device is for very small wearable thing. > Because of various issue such as power consumption and cost, > ARM Cortex M (that is MMU-less) series are commonly used. So I suppose these platforms have external RAM and Flash, right? Because most of the Cortex-M platforms I've seen have only the internal RAM and Flash of the Cortex-M processor, and the amount available internally is usually not sufficient to run Linux. Best regards, Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com