* [Buildroot] Buildroot + CoudeSourcery 2012.09 @ 2013-05-01 22:03 Sören Brinkmann 2013-05-02 7:00 ` [Buildroot] Smallish rootfs for wm8505 netbook Peter Faasse 2013-05-02 9:53 ` [Buildroot] Buildroot + CoudeSourcery 2012.09 Thomas Petazzoni 0 siblings, 2 replies; 6+ messages in thread From: Sören Brinkmann @ 2013-05-01 22:03 UTC (permalink / raw) To: buildroot Hi, I recently encountered some weird behavior, and couldn't really find anything about it. When I compile a rootfilesystem with CS2012.09 it looks like globbing is broken, resulting in init scripts are not executed. Using CS2012.03 and older works fine. The default shell is ash including bash compatibility stuff. Did anybody else see something like this? Thanks, S?ren ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Buildroot] Smallish rootfs for wm8505 netbook 2013-05-01 22:03 [Buildroot] Buildroot + CoudeSourcery 2012.09 Sören Brinkmann @ 2013-05-02 7:00 ` Peter Faasse 2013-05-02 9:57 ` Thomas Petazzoni 2013-05-02 9:53 ` [Buildroot] Buildroot + CoudeSourcery 2012.09 Thomas Petazzoni 1 sibling, 1 reply; 6+ messages in thread From: Peter Faasse @ 2013-05-02 7:00 UTC (permalink / raw) To: buildroot Hi, With varying degrees of success, i've been building buildroot based rootfs-s, toolchains and kernel images. All part of a hacking project with a few wm8505 (armv5) based netbooks. I'm attempting to use buildroot to build a rootfs & kernel that i can use to do some native development on the machines. The first set of bugs where no doubt caused by my own incompetence and learning curve, but there are one or two issues that i think are relevent for a wider audience. For reference, the target architecture is arm926t; Host is a Slackware-13.37 x86_64 machine; I'been using both the 2013.02 release of buildroot and the git-version as extracted yesterday. I let buildroot itself generate the toolchain (no croostool-ng etc..). I did manage to generate a few working toolchains, kernel uImages and rootfs.tar images, and i'm in the process of generating a fully satisfactory set of target files. But: 1) If i enable c++ support the toolchain, the build of the rootfs will fail because of a lack of UCLIBC_HAS_FENV (fenv.h not found). This can easily be remedied using make uclibc-menuconfig after configuring buildroot ('Target Architecture Features and Options'-->'Enable C99 Floating-point environment'), but i think it would make sense if that option is -if possible- automatically enabled by activating this uclibc option when c++ support is enabled in buildroot itself. 2) I do include the obsolete 'toolchain on the target'. The resulting gcc on- target is by default not usable because glibc.so (a linker script it seems) is not copied to the on-target directory. This can be remedied by adding *.so to the support/scripts/copy.sh, but i'm not quite sure if that has any side- effects. All-in-all i'm having lots of fun with buildroot... :-) greetings, Peter Faasse -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 490 bytes Desc: This is a digitally signed message part. URL: <http://lists.busybox.net/pipermail/buildroot/attachments/20130502/ff2ac27c/attachment.asc> ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Buildroot] Smallish rootfs for wm8505 netbook 2013-05-02 7:00 ` [Buildroot] Smallish rootfs for wm8505 netbook Peter Faasse @ 2013-05-02 9:57 ` Thomas Petazzoni 0 siblings, 0 replies; 6+ messages in thread From: Thomas Petazzoni @ 2013-05-02 9:57 UTC (permalink / raw) To: buildroot Dear Peter Faasse, Please do not reply to an e-mail on the list to start a new thread. Just send a new mail to buildroot at uclibc.org. Thanks. On Thu, 02 May 2013 09:00:49 +0200, Peter Faasse wrote: > With varying degrees of success, i've been building buildroot based > rootfs-s, toolchains and kernel images. All part of a hacking project > with a few wm8505 (armv5) based netbooks. > > I'm attempting to use buildroot to build a rootfs & kernel that i can > use to do some native development on the machines. We decided to no longer support native development on the target platform. If you're looking at a full-featured distribution that provides development tools, installing a Debian armel distribution is probably a wiser choice. > 1) If i enable c++ support the toolchain, the build of the rootfs > will fail because of a lack of UCLIBC_HAS_FENV (fenv.h not found). > This can easily be remedied using make uclibc-menuconfig after > configuring buildroot ('Target Architecture Features and > Options'-->'Enable C99 Floating-point environment'), but i think it > would make sense if that option is -if possible- automatically > enabled by activating this uclibc option when c++ support is enabled > in buildroot itself. Strange. Did you do a 'make clean; make' cycle? Can you share a Buildroot .config that exhibits the problem? > 2) I do include the obsolete 'toolchain on the target'. The resulting > gcc on- target is by default not usable because glibc.so (a linker > script it seems) is not copied to the on-target directory. This can > be remedied by adding *.so to the support/scripts/copy.sh, but i'm > not quite sure if that has any side- effects. Yes, we know the support for toolchain on the target is broken, and since no-one every sent patches to fix this, and because we think it's a bit outside of the scope of the Buildroot project, we decided to deprecate it. Best regards, Thomas -- Thomas Petazzoni, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Buildroot] Buildroot + CoudeSourcery 2012.09 2013-05-01 22:03 [Buildroot] Buildroot + CoudeSourcery 2012.09 Sören Brinkmann 2013-05-02 7:00 ` [Buildroot] Smallish rootfs for wm8505 netbook Peter Faasse @ 2013-05-02 9:53 ` Thomas Petazzoni 2013-05-02 16:02 ` Sören Brinkmann 1 sibling, 1 reply; 6+ messages in thread From: Thomas Petazzoni @ 2013-05-02 9:53 UTC (permalink / raw) To: buildroot Dear S?ren Brinkmann, On Wed, 1 May 2013 15:03:16 -0700, S?ren Brinkmann wrote: > I recently encountered some weird behavior, and couldn't really find > anything about it. > > When I compile a rootfilesystem with CS2012.09 it looks like globbing > is broken, resulting in init scripts are not executed. > > Using CS2012.03 and older works fine. I guess you're talking about ARM ? We don't have support for CS ARM 2012.09 in Buildroot because it's known to miscompile the Linux kernel. So it seems like this toolchain has problems. I think the kernel problem has been reported to Mentor Graphics, but nothing happened. Best regards, Thomas -- Thomas Petazzoni, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Buildroot] Buildroot + CoudeSourcery 2012.09 2013-05-02 9:53 ` [Buildroot] Buildroot + CoudeSourcery 2012.09 Thomas Petazzoni @ 2013-05-02 16:02 ` Sören Brinkmann 2013-05-02 16:39 ` Thomas Petazzoni 0 siblings, 1 reply; 6+ messages in thread From: Sören Brinkmann @ 2013-05-02 16:02 UTC (permalink / raw) To: buildroot On Thu, May 02, 2013 at 11:53:58AM +0200, Thomas Petazzoni wrote: > Dear S?ren Brinkmann, > > On Wed, 1 May 2013 15:03:16 -0700, S?ren Brinkmann wrote: > > > I recently encountered some weird behavior, and couldn't really find > > anything about it. > > > > When I compile a rootfilesystem with CS2012.09 it looks like globbing > > is broken, resulting in init scripts are not executed. > > > > Using CS2012.03 and older works fine. > > I guess you're talking about ARM ? We don't have support for CS > ARM 2012.09 in Buildroot because it's known to miscompile the Linux > kernel. Yes it's ARM. I can compile the kernel just fine with it. Though, I had to cherry-pick a commit to fix breakage with GCC 4.7.2. Commit 'ARM: 7668/1: fix memset-related crashes caused by recent GCC (4.7.2) optimizations' (sha1: 455bd4c430b0c0a361f38e8658a0d6cb469942b5). > > So it seems like this toolchain has problems. I think the kernel > problem has been reported to Mentor Graphics, but nothing happened. It's kinda weird. When I use hush it works. So it looks like some weirdness going on with ash and something in the toolchain. Google just found some >10 year old issue which seems similar to mine today. I wonder if that got reintroduced somehow. Thanks, S?ren ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Buildroot] Buildroot + CoudeSourcery 2012.09 2013-05-02 16:02 ` Sören Brinkmann @ 2013-05-02 16:39 ` Thomas Petazzoni 0 siblings, 0 replies; 6+ messages in thread From: Thomas Petazzoni @ 2013-05-02 16:39 UTC (permalink / raw) To: buildroot Dear S?ren Brinkmann, On Thu, 2 May 2013 09:02:18 -0700, S?ren Brinkmann wrote: > > I guess you're talking about ARM ? We don't have support for CS > > ARM 2012.09 in Buildroot because it's known to miscompile the Linux > > kernel. > Yes it's ARM. > I can compile the kernel just fine with it. Though, I had to > cherry-pick a commit to fix breakage with GCC 4.7.2. Commit 'ARM: > 7668/1: fix memset-related crashes caused by recent GCC (4.7.2) > optimizations' (sha1: 455bd4c430b0c0a361f38e8658a0d6cb469942b5). Ah, interesting. I never it myself, but we had a patch a while ago to introduce this toolchain, and the submitter said it wasn't working properly: http://lists.busybox.net/pipermail/buildroot/2012-November/062026.html. Thomas -- Thomas Petazzoni, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-05-02 16:39 UTC | newest] Thread overview: 6+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2013-05-01 22:03 [Buildroot] Buildroot + CoudeSourcery 2012.09 Sören Brinkmann 2013-05-02 7:00 ` [Buildroot] Smallish rootfs for wm8505 netbook Peter Faasse 2013-05-02 9:57 ` Thomas Petazzoni 2013-05-02 9:53 ` [Buildroot] Buildroot + CoudeSourcery 2012.09 Thomas Petazzoni 2013-05-02 16:02 ` Sören Brinkmann 2013-05-02 16:39 ` Thomas Petazzoni
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