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Questions tagged [uclibc]

uclibc is a version of the C standard library for embedded systems

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is dst a special environment variable

I am trying to build code under OpenWRT. I find that the uClibc compilation breaks [fails to build saying linux/errno.h is not found] if I have an environment variable [defined as export dst=/projects//... on a network-share]. If I change the name…
pkal
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Custom glibc in non-standard path on machine with uclibc and gcc compiled against uclibc

I have machine with uClibc, and I've managed to get glibc work on it using a simple wrapper I made. It can compile simple programs like hello world, and almost any other c program. But, it doesn't compile most of gnu and others programs because of…
Ivan
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open dir failed. Value too large for defined data type

I have tried all the existing solutions in stack overflow for similar questions : Mostly it was suggested to declare _FILE_OFFSET_BITS to 64. But this did not work. Sample Code : dir = opendir("/data/system/dropbox"); if (!dir) { …
Sandeep
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unhandled MPU fault on Cortex-M3 with uclinux and uclibc

This is a hard question but I hope someone could help ;) Here is the crash I have from simplest app which just calls pthread_create(): / # /opt/zpm_thread 00032 : pthread_initialize: initial thread stack bounds: bos=0x1, tos=0xffffffff 00032 :…
pulse
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How to build FLAT userspace binary for ucLinux on buildroot with arm2010q1 toolchain

I have a buildroot system for cortex-M3 without MMU based on ucLinux kernel 2.6.33. Support for FLAT, ZFLAT, SHARED_FLAT enabled in kernel. Inside buildroot everything is set to M3 etc. I have working system with working kernel and busybox (which…
pulse
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How to Cross Compile a source code using Clang?

I have clang 3.4 installed in my host machine(Ubuntu 12.04 LTS) and trying to cross compile a simple C++11 program to execute in a mips32r1(little endian) + uclibc environment. While trying to cross compile, I'm getting below error,(attached a…
Arunprasad Rajkumar
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Need to build automake for the host in buildroot

I have just upgraded to latest version of buildroot. With the previous version after buildroot was done, I would see automake/autoconf in my uclibc/usr/bin. But with the latest version of buildroot ( 2014 ), I dont see that anymore. Can anyone let…
eldukae
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Strange compiler behaviour

I'm trying to compile my project, which uses boost. Main integer type for me is a int32_t and int64_t from sys/types.h. If I compile project with host-system compiler (GCC 4.8.3, x86_64) process finished with success and binary file is correct work,…
Dcow
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uClibc vfork() is causing segmentation fault

I am using armv7 for openwrt development and facing a segfault caused by vfork. I have wrote a small test program with the following segments: ... pid_t child_t; if((child_t = vfork()) < 0) { printf("error!\n"); …
dear_tzvi
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C http server stops after unpredictable time

I am writing a custom HTTP server in C for my OpenWrt router. It makes use of the uclibc library. I am only using one static buffer which I am very careful not to overflow, and no multi-threading is involved. It doesn't contain any complex data…
user3650388
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Why the function sleep() can not work when the klee execute the Objectfile?

Yesterday I asked question on stackoverflow, but I have not described it clearly, so I change the way to ask, maybe make the problem clear. First, I modify the example get_sign.c which the klee provide, I include the unistd.h in the program, and…
wangxf
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how to correct config buildroot/uCLibc to get the spawn function

I try to use buildroot (2014.02) to generate ucLibc(0.9.33.2) Toolchain for mips, but it would not generate the spawn.h and other spawn related files on output/build/uclibc-0.9.33.2/ nor output/host folder, I confirmed that the…
Yehudi
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pthread_exit() is reached before pthread_join call

Having this piece of code: #include #include #include #include void* PrintHello(void* data){ printf("Hello from new thread\n"); pthread_exit(NULL); } int main(int argc, char* argv[]){ …
MABC
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Fallback ipv4 mechanism when ipv6 communication failed

I have some problem to understand an issue which concerns fallback mechanism in network communication. Setup : Embedded device (mips) with uclibc and busybox I am a client with ipv6 adress. I need to contact a service on xxx.com. When I test the…
ArthurLambert
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Memory fault in memcpy call

Im facing with a "memory fault" when calling to: extern void *memcpy (void *__restrict __dest, __const void *__restrict __src, size_t __n) __THROW __nonnull ((1, 2)); This is the piece of code: fprintf(stderr, "sysconfig line 440…
MABC
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