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Sylixos x86 platform C + + symbol table

Source: Internet
Author: User
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1.c++ Cross-platform problem description
After compiling the C + + engineering process under the x86 platform, there is a problem with the symbol table __atomic_fetch_sub_4 not found when running the compiled C + + shared library, as shown in 1.1. 

             图 1.1 符号表缺失

2. Problem solving
The reason why the symbol table is missing is because the platform compilation option is added to the cross-platform compilation, and the-march=i686 option is added under the x86 platform, as shown in 2.1.

       图 2.1 增加Makefile编译选项编译上传后，再运行动态库，发现动态库没有出现符号表未定义的问题， 2.2所示。

      图 2.2 动态库正常运行

Sylixos x86 platform C + + symbol table

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