kopia lustrzana https://github.com/espressif/esp-idf
41 wiersze
936 B
ReStructuredText
41 wiersze
936 B
ReStructuredText
GCC
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***
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:link_to_translation:`zh_CN:[中文]`
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Common Porting Problems and Fixes
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=================================
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``sys/dirent.h`` No Longer Includes Function Prototypes
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-------------------------------------------------------
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Issue
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^^^^^^
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Compilation errors may occur in code that previously worked with the old toolchain. For example:
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.. code-block:: c
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#include <sys/dirent.h>
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/* .... */
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DIR* dir = opendir("test_dir");
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/* .... */
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/**
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* Compile error:
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* test.c: In function 'test_opendir':
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* test.c:100:16: error: implicit declaration of function 'opendir' [-Werror=implicit-function-declaration]
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* 100 | DIR* dir = opendir(path);
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* | ^~~~~~~
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*/
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Solution
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^^^^^^^^^
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To resolve this issue, the correct header must be included. Refactor the code like this:
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.. code-block:: c
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#include <dirent.h>
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/* .... */
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DIR* dir = opendir("test_dir");
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