10 Replies Latest reply on Jun 29, 2017 7:24 AM by victor_2221421

Linker creates incorrect order of commands to link library

ray.parker_1412866 Dec 29, 2015 7:22 AM

I am using the Project/Build Settings dialog to try to add an additional library to my project. Using the "Additional Libraries" and the "Additional Libraries Directories" tabs does add the items to the linker command but since the directories is added after the library is added it appears as though the library can't be found. The linker command becomes:

-mcpu=cortex-m0 -mthumb -g -ffunction-sections -O0 -l m -l ..\..\..\Documents\MotionDriver\Arm_Source\libmplmpu -L Generated_Source\PSoC4 -L ..\..\..\Documents\MotionDriver\MPL_Libraries -Wl,-Map,${OutputDir}/${ProjectShortName}.map -T Generated_Source\PSoC4\cm0gcc.ld -specs=nano.specs -Wl,--gc-sections

But seemingly: -l ..\..\..\Documents\MotionDriver\Arm_Source\libmplmpu

isn't found because the directory to look in: -L Generated_Source\PSoC4 -L ..\..\..\Documents\MotionDriver\MPL_Libraries

hasn't been added to the path yet. That's speculation on my part and I'd welcome any feedback on how to accomplish this. The error that is thrown looks like:

arm-none-eabi-ar.exe: creating .\CortexM0\ARM_GCC_493\Debug\PSoC_4_BLE_MPU_9150.a

arm-none-eabi-gcc.exe -Wl,--start-group -o .\CortexM0\ARM_GCC_493\Debug\PSoC_4_BLE_MPU_9150.elf .\CortexM0\ARM_GCC_493\Debug\data_builder.o .\CortexM0\ARM_GCC_493\Debug\eMPL_outputs.o .\CortexM0\ARM_GCC_493\Debug\hal_outputs.o .\CortexM0\ARM_GCC_493\Debug\inv_mpu.o .\CortexM0\ARM_GCC_493\Debug\inv_mpu_dmp_motion_driver.o .\CortexM0\ARM_GCC_493\Debug\log_stm32.o .\CortexM0\ARM_GCC_493\Debug\message_layer.o .\CortexM0\ARM_GCC_493\Debug\ml_math_func.o .\CortexM0\ARM_GCC_493\Debug\mlmath.o .\CortexM0\ARM_GCC_493\Debug\mpl.o .\CortexM0\ARM_GCC_493\Debug\results_holder.o .\CortexM0\ARM_GCC_493\Debug\start_manager.o .\CortexM0\ARM_GCC_493\Debug\storage_manager.o .\CortexM0\ARM_GCC_493\Debug\uart.o .\CortexM0\ARM_GCC_493\Debug\mpu9150.o .\CortexM0\ARM_GCC_493\Debug\BLEApplication.o .\CortexM0\ARM_GCC_493\Debug\main_original.o .\CortexM0\ARM_GCC_493\Debug\motion_driver_main.o .\CortexM0\ARM_GCC_493\Debug\cymetadata.o .\CortexM0\ARM_GCC_493\Debug\Cm0Start.o .\CortexM0\ARM_GCC_493\Debug\PSoC_4_BLE_MPU_9150.a "C:\Program Files (x86)\Cypress\PSoC Creator\3.3\PSoC Creator\psoc\content\cycomponentlibrary\CyComponentLibrary.cylib\BLE_v1_10\Library\gccCyBLEStack_BLE_SOC_PERIPHERAL.a" "C:\Program Files (x86)\Cypress\PSoC Creator\3.3\PSoC Creator\psoc\content\cycomponentlibrary\CyComponentLibrary.cylib\CortexM0\ARM_GCC_493\Debug\CyComponentLibrary.a" -mcpu=cortex-m0 -mthumb -g -ffunction-sections -O0 -l m -l C:\Users\raypa\Documents\MotionDriver\Arm_Source\liblibmplmpu.a -L Generated_Source\PSoC4 -Wl,-Map,.\CortexM0\ARM_GCC_493\Debug/PSoC_4_BLE_MPU_9150.map -T Generated_Source\PSoC4\cm0gcc.ld -specs=nano.specs -Wl,--gc-sections -Wl,--end-group

ERROR: cannot find -lC:\Users\raypa\Documents\MotionDriver\Arm_Source\liblibmplmpu.a

collect2.exe: error: ld returned 1 exit status

The command 'arm-none-eabi-gcc.exe' failed with exit code '1'.

1. Re: Linker creates incorrect order of commands to link library

ray.parker_1412866 Dec 29, 2015 7:24 AM (in response to ray.parker_1412866)

I'm wondering if I could get around this by placing my library file in the same directory as the libm.a file that is linked properly (I assume due to some default path). Any idea where that is on a PSOC installation?
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2. Re: Linker creates incorrect order of commands to link library

ScottA_91 Jan 5, 2016 12:31 PM (in response to ray.parker_1412866)

Ray,

Would you please post a simple example (including the libraries) so I can attempt to reproduce the behavior?

Scott
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3. Re: Linker creates incorrect order of commands to link library

ray.parker_1412866 Jan 5, 2016 1:31 PM (in response to ray.parker_1412866)

Scott, Thanks for the reply. I believe I have resolved this. I needed to add the include path also. In my defense I would have thought the -l and -L commands should have sufficed :-)
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4. Re: Linker creates incorrect order of commands to link library

andreas.diechmann May 24, 2016 5:03 AM (in response to ray.parker_1412866)

@ray.parker_1412866 can you please explain, how you made it work?
I'm facing a similar problem.
Build error: cannot find -l.\libEZPSoC5.a
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5. Re: Linker creates incorrect order of commands to link library

user_1377889 May 24, 2016 6:21 AM (in response to ray.parker_1412866)

Welcome in the forum!

Afaik libraries have to be named yourlibrarilib.a in the dialog you only need to enter "yourlibrary"

as an example: to include mlib.a (the math library) you enter just "m".



Bob
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6. Re: Linker creates incorrect order of commands to link library

bud.a Jul 1, 2016 7:50 AM (in response to ray.parker_1412866)

thank you bob. i had a similar problem. "libyourlibrary.a" should have been "yourlibrary"
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7. Re: Linker creates incorrect order of commands to link library

user_1377889 Jul 1, 2016 8:45 AM (in response to ray.parker_1412866)

Welcome in the forum.

Oh yes, can it be that the "lib" is preceded and not trailing.



Bob
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8. Re: Linker creates incorrect order of commands to link library

jack.yeoh.2214776 Feb 19, 2017 10:30 PM (in response to ray.parker_1412866)

Hi, I'm facing the same problem. How do I solve this? I have tried removing the .a and lib extensions to no avail
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9. Re: Linker creates incorrect order of commands to link library

user_1377889 Feb 20, 2017 12:54 AM (in response to ray.parker_1412866)

Welcome in the forum, Jack.

What do you set exactly where (in which dialog?)



Bob
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10. Re: Linker creates incorrect order of commands to link library

victor_2221421 Jun 29, 2017 7:24 AM (in response to ray.parker_1412866)

Im facing the same problem...Ok i get you must remove the lib and the .a but do i have to remove it directly from the file name too???
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