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Fix clock_t issue when compiling with newlib #9

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Fix clock_t issue when compiling with newlib #9

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14 changes: 14 additions & 0 deletions components/libc/compilers/common/include/sys/select.h
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,18 @@
* 2021-12-25 Meco Man Handle newlib 2.2.0 or lower version
*/

/*
* Newlib's <sys/types.h> includes <sys/select.h> before it defines clock_t.
* If this wrapper is picked up at that point, including RT-Thread's
* <sys/time.h> below pulls in <time.h> too early and newlib sees an undefined
* clock_t. In that specific in-progress newlib include, keep using newlib's
* own select definitions first.
*/
#if defined(__GNUC__) && !defined(__ARMCC_VERSION) && defined(_SYS_TYPES_H) && \
!defined(__clock_t_defined) && !defined(_CLOCK_T_DECLARED)
#include_next <sys/select.h>
#else
Comment on lines +19 to +22

#ifndef __SYS_SELECT_H__
#define __SYS_SELECT_H__

Expand Down Expand Up @@ -58,3 +70,5 @@ int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struc
#endif

#endif /* __SYS_SELECT_H__ */

#endif