fix(picolibc): fix missed headers in sources

components/newlib/platform_include/sys/lock.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -12,7 +12,7 @@
 extern "C" {
 #endif
 
-#ifdef _RETARGETABLE_LOCKING
+#if defined(_RETARGETABLE_LOCKING) || defined(CONFIG_LIBC_PICOLIBC)
 
 /* Actual platfrom-specific definition of struct __lock.
  * The size here should be sufficient for a FreeRTOS mutex.
@@ -52,10 +52,6 @@ int _lock_try_acquire_recursive(_lock_t *plock);
 void _lock_release(_lock_t *plock);
 void _lock_release_recursive(_lock_t *plock);
 
-#if CONFIG_LIBC_PICOLIBC
-#define __lock_try_acquire(lock) _lock_try_acquire(&(lock))
-#define __lock_try_acquire_recursive(lock) _lock_try_acquire_recursive(&(lock))
-#endif // CONFIG_LIBC_PICOLIBC
 #endif // _RETARGETABLE_LOCKING
 
 #ifdef __cplusplus

components/newlib/platform_include/sys/select.h

@@ -26,6 +26,10 @@ int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *errorfds, struct
 
 #endif // fd_set
 
+#if __BSD_VISIBLE && !defined(fds_bits)
+#define fds_bits    __fds_bits
+#endif
+
 #if defined(FD_ISSET) || defined(FD_SET) || defined(FD_CLR)
 #undef FD_SET
 #undef FD_CLR

components/newlib/src/getentropy.c

@@ -6,6 +6,7 @@
 
 #include <sys/random.h>
 #include <errno.h>
+#include <stddef.h>
 
 int getentropy(void *buffer, size_t length)
 {

components/newlib/src/picolibc/picolibc_init.c

@@ -13,7 +13,7 @@
 #include <stdio-bufio.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-#include <sys/signal.h>
+#include <signal.h>
 #include <sys/unistd.h>
 #include <sys/reent.h>
 #include <assert.h>

components/newlib/src/pthread.c

@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 #include <pthread.h>
+#include <signal.h>
 #include "esp_log.h"
 
 const static char *TAG = "esp32_asio_pthread";
@@ -22,6 +23,8 @@ int pthread_sigmask(int how, const sigset_t *restrict set, sigset_t *restrict os
     return 0;
 }
 
+// picolibc has sigfillset macro in signal.h
+#if !CONFIG_LIBC_PICOLIBC
 int sigfillset(sigset_t *what)
 {
     ESP_LOGD(TAG, "%s: Signals not supported in ESP pthread", __func__);
@@ -30,6 +33,7 @@ int sigfillset(sigset_t *what)
     }
     return 0;
 }
+#endif /* !CONFIG_LIBC_PICOLIBC */
 
 void esp_libc_include_pthread_impl(void)
 {

components/newlib/src/reent_syscalls.c

@@ -13,6 +13,7 @@
 #include <errno.h>
 #include <reent.h>
 #include <sys/fcntl.h>
+#include <sys/stat.h>
 #include "sdkconfig.h"
 #include "esp_rom_uart.h"
 #include "esp_system_console.h"

components/newlib/src/syscalls.c

@@ -10,6 +10,7 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <sys/time.h>
+#include <sys/stat.h>
 
 #if CONFIG_LIBC_PICOLIBC
 int open(const char *pathname, int flags, ...)

components/newlib/test_apps/newlib/main/test_newlib.c

@@ -10,6 +10,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
+#include <signal.h>
 #include <sys/time.h>
 #include "unity.h"
 #include "sdkconfig.h"