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  VS Arduino › Visual Micro › Installation & Troubleshooting › Linking to precompiled libraries
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Normal Topic Linking to precompiled libraries (Read 4664 times)
JustinL
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Linking to precompiled libraries
Jan 9th, 2015 at 11:12pm
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Hi,

I have been using VisualMicro for a while with no problems. Its been great.

However I now need to link to a thirdparty precompiled library as part of my project.

Looking at the verbose compile output, the linker is not being passed the library. 

Is there anyway I can force the linker commandline arguments as Amtel Studio options are ignored?

Or is there another way of forcing the linker to include the library?

At the moment I am just getting loads of "warning: undefined reference to"

Any help will be brilliant.

cheers,
Justin
  
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Tim@Visual Micro
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Re: Linking to precompiled libraries
Reply #1 - Jan 10th, 2015 at 1:17pm
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Hi,

They are not catered for in the Arduino build process but we will shortly be providing a "convert to atmel" function that would make your arduino project a real atmel studio gcc project. That would then allow you more control but less vm help.

An alternative is to edit the avr\platform.txt below the arduino ide hardware folder and add your own {my_libs} variable to the appropriate build .pattern. Then edit the boards.txt and add your own board by copying and renaming an existing board. You can then add a key to the cloned board def such as 

Code
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myboard.my_libs=


In atmel studio then click tools>visual micro>reload toolchains or re-start the ide and select your new board.

Sorry it's a bit messy
« Last Edit: Jan 10th, 2015 at 1:19pm by Tim@Visual Micro »  
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JustinL
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Re: Linking to precompiled libraries
Reply #2 - Jan 10th, 2015 at 5:31pm
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Hi,

Thanks for the quick reply. 

Editing the boards.txt as below:
build.variant_system_lib=libsam_sam3x8e_gcc_rel.a"  "C:\anotherlib.a

adds "anotherlib.a"  to the linker commandline perfectly.

Thanks for the help. 

cheers,
Justin 
  
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Tim@Visual Micro
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Re: Linking to precompiled libraries
Reply #3 - Jan 10th, 2015 at 9:29pm
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Great, thanks for the update I will make a note of that for others

« Last Edit: Jan 10th, 2015 at 9:29pm by Tim@Visual Micro »  
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