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fix the log file path error when using system environment variables in log.conf #75

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fix the log file path error when using system environment variables in log.conf #75

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siyuhong
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system : ubuntu20
compiler : x86_64-linux-gnu g++
compiler version : 9.4.0
build error : undefined reference to 'Log4Qt::AppenderAttachable::~AppenderAttachable()'

@andibacher
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Hallo, I can not reproduce this on Ubuntu 20.04 and gcc 9.4. It should not be necessary to define a empty destruction in MainThreadAppender. Any more details why this fails for you?

@siyuhong
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This problem will occur when I inherit the MainThreadAppender Class to implement a custom Adapter Class.

@siyuhong siyuhong changed the title fix x86_64-linux-gnu g++ build error: undefined reference fix the log file path error when using system environment variables in log.conf Oct 31, 2022
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@siyuhong @andibacher