fix: remove -fPIE from generic CXXFLAGS

[felixonmars]

They are not applicable for shared libraries and breaks building. Please use --enable-default-pie for gcc instead of inserting PIE flags to every package.

relocation R_X86_64_PC32 against symbol `_ZN26ComDeepinAnythingInterface16staticMetaObjectE' can not be used when making a shared object; recompile with -fPIC

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[felixonmars]

Still the case in 5.4.5. Is this project still maintained?

[Decodetalkers]

@Clauszy

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New tag: 5.4.8
DISTRIBUTION: unstable
Suggest: synchronizing this PR through rebase #89

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New tag: 5.4.9
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Suggest: synchronizing this PR through rebase #90

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New tag: 5.5.0
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New tag: 5.5.1
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New tag: 5.5.2
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New tag: 5.5.4
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New tag: 5.5.6
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New tag: 5.5.7
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New tag: 5.5.8
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New tag: 5.5.10
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New tag: 5.5.11
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Suggest: synchronizing this PR through rebase #165