• Weak symbols with GCC and ARMCC

    Hi all,

    I am trying to use the weak attribute for global initialized variable. It works for a function I am also trying to re-implement, but fail to do so for variable.  I am trying to do it for quite common scenario: I have layered structure to support…

  • Linking an armcc pre-compiled lib with a GCC project

    Hi,

    Would it be possible to link a library that has been compiled using armcc 5 to a GNU (GCC) based project?

  • How to choose GCC options for Neon r0p4

    ARM cumunity,

    We are design a SOC with Neon (r0p4) integrated. I saw the GCC have multiple options for Neon:

    Known ARM FPUs (for use with the -mfpu= option):
    auto crypto-neon-fp-armv8 fp-armv8 fpv4-sp-d16 fpv5-d16 fpv5-sp-d16 neon
    neon-fp-armv8 neon-fp16…

  • arm-...-gcc 8.3.1 VS 4.9.3

    Dears,

    I have been compiling with arm-none-eabi-gcc version 4.9.3 for a while; and everything were just fine with a Cortex-M0  I recently have tried using version 8.3.1 and things are not going as well.

    I compiled the exact same code with the released…

  • Build failed when cross-compiling using arm-linux-gnueabihf toolchain in ARM DS

    I have downloaded the latest linaro gcc arm-linux-gnueabihf for cross compilation from windows to linux. I tried to test it with a simple c++ HelloWorld code but I couldn't get the project to be successfully built. 

    #include <iostream>
#include <bits…

  • Illegal exception in __start in newlib crt0.s for Cortex R52

    Hi

    I am attempting to run an in house benchmark on a cycle accurate model of the ARM Cortex R52, in a baremetal setup. I compiled and built my benchmark using GCC 7.2.1 - gcc version 7.2.1 20170904 (release) [ARM/embedded-7-branch revision 255204] (GNU…

  • arm-eabi-gcc-8.3.0.exe: error: CreateProcess: No such file or directory

    Hi,

    We have been trying to build with GNU ARM tool chain (Cortex-A specific tool) "gcc-arm-8.3-2019.03-i686-mingw32-arm-eabi", but we see the following error:

    arm-eabi-gcc.exe error: CreateProcess: No such file or directory

    Verified all the…

  • What are the compile option differences between --specs=nosys.specs and --specs=rdimon.specs in arm-none-eabi-gcc?

    1.

    As title. 

    and what time I need to add options  ?

    I know add --specs=nano.specs thas is mean using newlib-nano when I use arm-none-eabi-gcc.

    In readme, rdimon is for semihosting. Nosys is for retarget.

    We use bare metal system and printf retarget to AXI…

  • address sanitizer in ARM GNU-A 8.2-2018.11 arm-linux-gnueabihf

    Hi all,

    I'm trying to compile my application with -fsanitize but when linking it fails complaining that it cannot find any library for the linker flag '-lasan'. I did check and it seems that the ARM toolchain 8.2-2018.11 does not ship with…

  • what library used on arm gcc none eabi ?

    1. Does arm-gcc-none-eabi and newlib is packed?

    2. Why arm-gcc-none-eabi need glibc 2.14?

    I have a problem when I use arm gcc none eabi cross compiler.

    "version GLIBC_2.14 not found"

    Then I install glibc 2.14 and add to LD_LIBRARY_PATH. It's perfect…

  • Interoperability for c++ between armclang and gcc(linaro)

    Hi;

    I have built 'Compute Library'  as said in Bare Metal Building section of documentation by using Linaro toolchain on Ubuntu. I'm targetting bare-metal.

    On another machine, I want to use this library but this machine has an Arm Compiler…

  • How to assign own glibc path to aarch64-elf-gcc

    1.
    aarch64-elf-gcc need use glibc2.14 while our central version up to glibc-2.12 only
    2.
    I have downloaded glibc-2.14 in my local directory
    3.
    There is a limitation in my environment that if I add glibc-2.14 path into LD_LIBRARY_PATH directly, DS-5 eclipse…

  • How to use aarch64-elf-gcc to print hello world

    1.
    aarch64-elf-gcc need use glibc2.14 while our central version up to glibc-2.12 only
    2.
    I have downloaded glibc-2.14 in my local directory

    3
    I try to set LD_LIBRARY_PATH to my local glibc-2.14 directory then isuue following command:


    >>>>>>>>>>>>>>>>>>…

  • Problem with GCC and string.h and stdlib

    Note: This was originally posted on 8th October 2008 at http://forums.arm.com

    Hi everyone,

    i have following trouble with keil arm gnu compiler. i have recently moved to gnu and now i am having hard time to set it up.

    description of problem: i am using real…

  • Pass in an immediate value to an inline assembly function

    Note: This was originally posted on 6th March 2009 at http://forums.arm.com

    Hi,

    I would like to pass in an immediate value to an inline assembly function, such as in this example:

    inline int foo(int a, int b, const int immed)
    {
       register int result;…

  • ARM GCC Retarget dosen't work in coresight example

    I have not seen any axi transfer when I run coresight example helloworld.

    And the cpu program counter stopping in some code

    I have some questions when I check my IMAGE0.lst file

    1 .why printf is branch to putchar instead of printf in coresight example?

    2. Is…

  • Cross-compiling for Cortex-A9 with GCC

    Arm offers 2 different GCC toolchains: one for Cortex-M/R devices and the other one for Cortex-A devices. However, in the Cortex-M/R toolchain documentation, it is specified that Cortex-A targets are accepted too, so this confuses me: why is there another…

  • Support for std::thread and other synchronization primitives, e.g. std::mutex...

    I would like to know if any of the compilers/libraries for Cortex-M support the std::thread type (from the <thread> header) or if there is any plan to support that in the near future. I am interested in both Keil MDK / DS-5 or GCC for ARM. Thank you!…

  • gcc 8.3-2019.03 windows i686-mingw32_arm-linux-gnueabihf?

    hello,

    we use the linaro build: gcc-linaro-4.9.4-2017.01-i686-mingw32_arm-linux-gnueabihf and want now to update to v8.3.

    is the new version, or similar version gcc v8.3 also available for windows?

    i found only the bare-metal versions for windows.

    thanks…

  • ST HAL Driver + ST USB Stack middleware failing using GNU GCC

    Dear all,

    I am on the process of switching to GNU GCC for compiling an already working project. Most of the functionality has been tested. There is a failing test though: The USB VCP drivers do not seem to perform good.

    The client side (PC-Windows) is…

  • selected processor does not support `cpsid i' and `cpsie i' in arm mode.

    hi everyone,

    i'm new with ARMprocessor and dont know too much about DS-5. just alittle bit from my Softwares >>> SoC EDS 17.1 (from Altera)  - DS-5 5.28 and my OS is Windows 10. I am using DS-5 for my SoC FPGA (DE0_Nano_SoC) Altera, which…

  • the relationship between startup_ARMCM3.s and gcc_arm.ld from Cortex-M3 of MDK5.

    Dear All,
    Currently now I'm trying to undersatnd the relationship between startup_ARMCM3.s and gcc_arm.ld from Cortex-M3 of MDK5.
    the following codes are refered from Cortex-M3 of MDK5 example code.


    1 //---startup_ARMCM3.s----------//
    2
    3 __HeapLimit…

  • Eclipse not finding toolchain

    I've read everything I could put my hands on to figure this out but have had no luck.  I installed the win32 exe   gcc-arm-none-eabi-6-2017-q2-update-win32-sha2.exe  but it is not found by Eclipse.  I know it says to leave the environment variable blank…

  • Help.. moving from GNU linker to armld

    Presently, I use ARM cc compiler with GNU Linker, And I've been trying to move completely to the ARM toolchain. But I am not sure how to add symbols in ARM linker while using scatter file..

    In ARM GNU linker, while using the .ld file, I could add my…

  • ROM Self-Test in MDK-ARM - Another Approach Sought

    Hi,

    I'm in the process of porting my Flash memory check for STM32F0 from gcc to mdk. The gcc check follows a method similar to:

    http://stackoverflow.com/questions/24150030/storing-crc-into-an-axf-elf-file

    This is a great solution since beside the CRC…