libc: indicate timeval is defined

In order to avoid multiple definition errors, indicate that struct
timeval is declared.

Signed-off-by: Chris Friedt <[email protected]>

Author: cfriedt

lib/libc/armstdc/include/sys/_timeval.h

@@ -23,5 +23,6 @@ struct timeval {
 	time_t tv_sec;
 	suseconds_t tv_usec;
 };
+#define __timeval_defined
 
 #endif /* ZEPHYR_LIB_LIBC_ARMSTDC_INCLUDE_SYS__TIMEVAL_H_ */

lib/libc/iar/include/sys/_timeval.h

@@ -23,5 +23,6 @@ struct timeval {
 	time_t tv_sec;
 	suseconds_t tv_usec;
 };
+#define __timeval_defined
 
 #endif /* ZEPHYR_LIB_LIBC_IAR_INCLUDE_SYS__TIMEVAL_H_ */

lib/libc/minimal/include/sys/_timeval.h

@@ -19,9 +19,13 @@ typedef _TIME_T_ time_t;
 typedef _SUSECONDS_T_ suseconds_t;
 #endif
 
+#if !defined(_TIMEVAL_DECLARED) && !defined(__timeval_defined)
 struct timeval {
 	time_t tv_sec;
 	suseconds_t tv_usec;
 };
+#define _TIMEVAL_DECLARED
+#define __timeval_defined
+#endif
 
 #endif /* ZEPHYR_LIB_LIBC_MINIMAL_INCLUDE_SYS__TIMEVAL_H_ */

lib/libc/newlib/include/sys/_timeval.h

@@ -0,0 +1,14 @@
+/*
+ * Copyright The Zephyr Project Contributors
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef ZEPHYR_LIB_LIBC_NEWLIB_INCLUDE_SYS__TIMEVAL_H_
+#define ZEPHYR_LIB_LIBC_NEWLIB_INCLUDE_SYS__TIMEVAL_H_
+
+#include_next <sys/_timeval.h>
+
+#define _TIMEVAL_DECLARED
+
+#endif /* ZEPHYR_LIB_LIBC_NEWLIB_INCLUDE_SYS__TIMEVAL_H_ */

lib/libc/picolibc/include/sys/_timeval.h

@@ -0,0 +1,14 @@
+/*
+ * Copyright The Zephyr Project Contributors
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef ZEPHYR_LIB_LIBC_PICOLIBC_INCLUDE_SYS__TIMEVAL_H_
+#define ZEPHYR_LIB_LIBC_PICOLIBC_INCLUDE_SYS__TIMEVAL_H_
+
+#include_next <sys/_timeval.h>
+
+#define _TIMEVAL_DECLARED
+
+#endif /* ZEPHYR_LIB_LIBC_PICOLIBC_INCLUDE_SYS__TIMEVAL_H_ */