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How to force gcc to link an unused static library
http://forum.andestech.com/viewtopic.php?f=25&t=875
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Author:  cindy [ Sun Aug 03, 2014 12:28 am ]
Post subject:  How to force gcc to link an unused static library

Option:
Code:
Use --whole-archive linker option.

Libraries that come after it in the command line will not have unreferenced symbols discarded. You can resume normal linking behaviour by adding --no-whole-archive after these libraries.

In your example, the command will be:

g++ -o program main.o -Wl,--whole-archive /path/to/libmylib.a
In general, it will be:

g++ -o program main.o \
    -Wl,--whole-archive -lmylib \
    -Wl,--no-whole-archive -llib1 -llib2


Reference:
http://stackoverflow.com/questions/1411 ... ic-library

Sample code
Attachment:
usercode3_4.zip [117.38 KiB]
Downloaded 244 times


Attachment:
u3.png
u3.png [ 59.3 KiB | Viewed 3210 times ]


Attachment:
u4.png
u4.png [ 66.16 KiB | Viewed 3210 times ]

The link option of usercode4
nds32le-elf-gcc -O0 -static -L../ -Wl,--whole-archive -llibcount -Wl,--no-whole-archive -T"nds32.ld" -o "usercode4.adx" ./main.o

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