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| # 09:45:37 | V0idExp | Hello everybody! |
| # 09:45:41 | diorcety1 | hi |
| # 09:45:45 | V0idExp | I need your help for a simple task :( |
| # 09:45:55 | V0idExp | so simple, that it may seem stupid asking stuff like that |
| # 09:46:17 | V0idExp | well, using latest stable ct-ng I've built a GCC-Glibc toolchain successfully. |
| # 09:47:34 | V0idExp | I'm running a x86-64 distro, and built a toolchain which also targets x86-64. Just to distinguish between my system compiler and toolchain's one, i've set the vendor string to 'acme', so I ended up having a lot of executables like x86_64-acme-linux-gnu-g++ and so on... |
| # 09:48:58 | V0idExp | I have a basic Linux micro-distro, which consists only of a module-less kernel and a busybox toolset, which is running inside a virtual machine. Just boots and opens a shell.. So there's nothing a part /bin, /dev/, /etc directories. MINIMAL ;) |
| # 09:49:42 | V0idExp | What I want is to cross compile a simple dynamically-linked 'hello' program, which is a simple C++ hello world, using the generated toolchain ('acme' ;)) |
| # 09:50:39 | V0idExp | so, the command is simple: |
| # 09:50:39 | V0idExp | x86_64-acme-linux-gnu-g++ hello.cpp -o hello |
| # 09:52:42 | V0idExp | there are two problems: |
| # 09:52:42 | V0idExp | 1) `ldd hello` says that it's linked to my system libc and libstdc++ libraries |
| # 09:52:42 | V0idExp | 2) if I use the LD_LIBRARY_PATH env var to point to my toolchain's library directory, libstdc++ links to my toolchain's lib, but libc still links to system... |
| # 09:52:42 | V0idExp | So, the hello program doesn't execute on my microdistro, even if I copy all the sysroot/usr/lib directory to distro's /lib |
| # 09:54:26 | V0idExp | What I'm doing wrong? :( |
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| # 22:12:24 | bhundven | muhahaha: http://git.pengutronix.de/?p=ukl/linux.git;a=summary |
| # 22:12:51 | bhundven | specifically: http://git.pengutronix.de/?p=ukl/linux.git;a=shortlog;h=refs/heads/efm32 |
| # 22:14:09 | y_morin | bhundven: Hello! efm32 == ? |
| # 22:14:14 | bhundven | linux on a cortex-m3 mcu |
| # 22:14:21 | bhundven | by energy micro |
| # 22:14:23 | bhundven | lol |
| # 22:14:50 | bhundven | http://en.wikipedia.org/wiki/EFM32 |
| # 22:15:36 | bhundven | granted, I'd have to hack userspace a bit, to make it smaller. |
| # 22:15:48 | y_morin | bhundven: cortex-m3 are thunb2 only, iirc? And last I heard, it is absolutely possible to build the kernel in thumb2 only. |
| # 22:16:12 | bhundven | I've been doing my builds with thumb (1) |
| # 22:17:08 | bhundven | it should support both |
| # 22:17:19 | y_morin | bhundven: The kernel can't run in thumb-1 only. Thumb-1 misses a few insns (interrupt-related). |
| # 22:17:25 | bhundven | ah |
| # 22:17:29 | bhundven | ok |
| # 22:17:50 | y_morin | bhundven: I really mean: the Linux _kernel_, not the userland, which can indeed run in thunb1 only. |
| # 22:18:00 | bhundven | right |
| # 22:18:17 | bhundven | does ctng support thumb2 yet? |
| # 22:18:40 | y_morin | bhundven: However, thunb2 is thunb1 plus a few 32-bit insns that makes it possible to run the kernel in Thumb2 mode (ie. 16-bit, no 32-bit arm-mode) |
| # 22:18:52 | y_morin | bhundven: Well, yes. |
| # 22:19:19 | y_morin | bhundven: If by support you men "there's an option for that in the menu", then yes. |
| # 22:19:29 | bhundven | hah |
| # 22:19:44 | y_morin | bhundven: Then, whether thumb2 or thumb1 is used depends on the processor you configure gcc for. |
| # 22:20:01 | bhundven | -march=cortex-m3 |
| # 22:20:44 | y_morin | bhundven: yes, something like that. Or even "-march=cortex-a9 -mthumb" will generate thumb2 |
| # 22:21:11 | y_morin | Well: s/will/should/ |
| # 22:21:14 | y_morin | :-) |
| # 22:21:17 | bhundven | right |
| # 22:28:26 | bhundven | anyways, seems like a fun project |
| # 22:29:20 | y_morin | bhundven: Yep. |
| # 22:29:37 | bhundven | trying with uclibc |
| # 22:29:48 | y_morin | Anyway, 00:30 here, sleepiness is kicking in... |
| # 22:29:55 | bhundven | g'night yann |
| # 22:30:08 | y_morin | Bye, see ya! |
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