topic Re: Can't Build with Link-time Optimizer Enabled in S32 Design Studio

Can't Build with Link-time Optimizer Enabled

peterb2 — Tue, 22 Aug 2017 01:22:08 GMT

Enabling the link-time optimizer (-flto) option in the build settings causes my builds to fail in the following way:

Invoking: Standard S32DS C++ Linker
powerpc-eabivle-g++ -o "link_opt_Z7_0.elf" "@link_opt_Z7_0.args"    
powerpc-eabivle-g++.exe: error: nosys.specs: No such file or directory
lto-wrapper: c:\NXP\S32DS_Power_v1.2\Cross_Tools\powerpc-eabivle-4_9\bin\powerpc-eabivle-g++.exe returned 1 exit status
c:/nxp/s32ds_power_v1.2/cross_tools/powerpc-eabivle-4_9/bin/../lib/gcc/powerpc-eabivle/4.9.4/../../../../powerpc-eabivle/bin/real-ld.exe: error: lto-wrapper failed
collect2.exe: error: ld returned 1 exit status
make: *** [link_opt_Z7_0.elf] Error 1‍‍‍‍‍‍‍‍‍‍‍‍‍‍

It appears that the linker cannot find the nosys.specs file when this option is enabled. It doesn't have a problem when it is disabled.

If I am missing any other set-up I should also be doing in conjunction with enabling this option, does anyone have any tips or pointers for me?

This can be reproduced with a new S32DS project (I am using S32DS for PowerPC V1.2)

Start a new project
I selected the MPC5777C core (it probably doesn't matter)
1. C++ for the language
2. NewLib for the library
In the build settings of S32DS , enable the link-time optimizer (-flto) option. I did this for both C and C++ settings
Compile

Re: Can't Build with Link-time Optimizer Enabled

stanish — Wed, 23 Aug 2017 14:51:36 GMT

Hi Peter,

Thanks for this report. I'm able to reproduce it easily.

I've logged this issue into our defect tracking system.

Our compiler experts are going to analyze this particular issue.

At the moment the only workaround is not to use -flno switch

Regards,

Stan

Re: Can't Build with Link-time Optimizer Enabled

alexanderfedoto — Thu, 24 Aug 2017 20:28:57 GMT

This issue is common for ARM and Power GCC toolchain.

Regarding to Newlib libraries workaround is to move libraries from powerpc-eabivle\newlib\lib to powerpc-eabivle\lib

mv powerpc-eabivle\newlib\lib powerpc-eabivle\lib

Re: Can't Build with Link-time Optimizer Enabled

riccardolalli — Tue, 12 Sep 2017 15:59:38 GMT

Hello, I have the same issue with S32DS for ARM 1.3, with ewl_c library and -flto option.

This is my build log:

Building target: dummy_project.elf
Executing target #5 dummy_project.elf
Invoking: Standard S32DS C Linker
arm-none-eabi-gcc -o "dummy_project.elf" "@dummy_project.args"
arm-none-eabi-gcc.exe: error: ewl_c9x_noio.specs: No such file or directory
lto-wrapper: c:\NXP\S32DS_ARM_v1.3\Cross_Tools\gcc-arm-none-eabi-4_9\bin\arm-none-eabi-gcc.exe returned 1 exit status
c:/nxp/s32ds_arm_v1.3/cross_tools/gcc-arm-none-eabi-4_9/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/bin/ld.exe: lto-wrapper failed
collect2.exe: error: ld returned 1 exit status
make: *** [dummy_project.elf] Error 1

Is there a solution like the one for newlib?

Thanks,

Riccardo

Re: Can't Build with Link-time Optimizer Enabled

alexanderfedoto — Tue, 12 Sep 2017 19:30:26 GMT

Workaround should be the same:

mv S32DS\arm_ewl2\lib Cross_Tools\gcc-arm-none-eabi-4_9\arm-none-eabi\lib‍‍

Re: Can't Build with Link-time Optimizer Enabled

riccardolalli — Wed, 13 Sep 2017 07:15:51 GMT

It worked, thank you.

Re: Can't Build with Link-time Optimizer Enabled

fyw — Mon, 25 Sep 2017 01:40:23 GMT

Hi Sliva:

I use the method from "Alexander Fedotov " (mv powerpc-eabivle\newlib\lib powerpc-eabivle\lib)and still didn't work. I search the folder "Cross_Tools" and find no file named "ewl_c9x_noio.specs". Is there any way that i can enable the link-time optimizer (-flto) option

Thank you very much!

The build infomation list below:

Building target: SMS_PRJ_Z7_0.elf
Executing target #112 SMS_PRJ_Z7_0.elf
Invoking: Standard S32DS C Linker
powerpc-eabivle-gcc -o "SMS_PRJ_Z7_0.elf" "@SMS_PRJ_Z7_0.args"
powerpc-eabivle-gcc.exe: error: ewl_c9x_noio.specs: No such file or directory
lto-wrapper: c:\Freescale\S32_Power_v1.2\Cross_Tools\powerpc-eabivle-4_9\bin\powerpc-eabivle-gcc.exe returned 1 exit status
c:/freescale/s32_power_v1.2/cross_tools/powerpc-eabivle-4_9/bin/../lib/gcc/powerpc-eabivle/4.9.4/../../../../powerpc-eabivle/bin/real-ld.exe: error: lto-wrapper failed
collect2.exe: error: ld returned 1 exit status
make: *** [SMS_PRJ_Z7_0.elf] Error 1

Re: Can't Build with Link-time Optimizer Enabled

alexanderfedoto — Mon, 25 Sep 2017 09:03:39 GMT

You are using EWL2 specs and EWL2 libs respectively. so in this case you need to move/copy lib folder from EWL2.

See my answer below for ARM.

For Power the trick almost the same:

mv S32DS\e200_ewl2\lib Cross_Tools\powerpv-eabivle-4_9\powerpc-eabivle\lib
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