20 lines
966 B
C
20 lines
966 B
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* When building position independent code with GCC using the -fPIC option,
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* (or even the -fPIE one on older versions), it will assume that we are
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* building a dynamic object (either a shared library or an executable) that
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* may have symbol references that can only be resolved at load time. For a
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* variety of reasons (ELF symbol preemption, the CoW footprint of the section
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* that is modified by the loader), this results in all references to symbols
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* with external linkage to go via entries in the Global Offset Table (GOT),
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* which carries absolute addresses which need to be fixed up when the
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* executable image is loaded at an offset which is different from its link
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* time offset.
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*
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* Fortunately, there is a way to inform the compiler that such symbol
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* references will be satisfied at link time rather than at load time, by
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* giving them 'hidden' visibility.
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*/
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#pragma GCC visibility push(hidden)
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