From 84ad761e7d44b1f1cbde58a9fc1d834849b074ad Mon Sep 17 00:00:00 2001
From: Robin Getz <robin.getz@analog.com>
Date: Mon, 22 Nov 2021 18:25:49 -0500
Subject: [PATCH] Windows doesn't provide strtok_r, it uses strtok_s

so wrap it to make sure we can find it.

Signed-off-by: Robin Getz <robin.getz@analog.com>
---
 CMakeLists.txt       |  1 +
 iio-config.h.cmakein |  1 +
 iio-private.h        |  1 +
 utilities.c          | 11 +++++++++++
 4 files changed, 14 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 30576c045..698676f6e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -130,6 +130,7 @@ include(CheckSymbolExists)
 check_symbol_exists(strdup "string.h" HAS_STRDUP)
 check_symbol_exists(strndup "string.h" HAS_STRNDUP)
 check_symbol_exists(strerror_r "string.h" HAS_STRERROR_R)
+check_symbol_exists(strtok_r "string.h" HAS_STRTOK_R)
 check_symbol_exists(newlocale "locale.h" HAS_NEWLOCALE)
 
 option(ENABLE_IPV6 "Define if you want to enable IPv6 support" ON)
diff --git a/iio-config.h.cmakein b/iio-config.h.cmakein
index ab2687dc2..6f8932536 100644
--- a/iio-config.h.cmakein
+++ b/iio-config.h.cmakein
@@ -28,6 +28,7 @@
 #cmakedefine HAS_PIPE2
 #cmakedefine HAS_STRDUP
 #cmakedefine HAS_STRNDUP
+#cmakedefine HAS_STRTOK_R
 #cmakedefine HAS_STRERROR_R
 #cmakedefine HAS_NEWLOCALE
 #cmakedefine HAS_PTHREAD_SETNAME_NP
diff --git a/iio-private.h b/iio-private.h
index 6938a9e9c..71a46afef 100644
--- a/iio-private.h
+++ b/iio-private.h
@@ -261,6 +261,7 @@ unsigned int find_channel_modifier(const char *s, size_t *len_p);
 
 char *iio_strdup(const char *str);
 char *iio_strndup(const char *str, size_t n);
+char *iio_strtok_r(char *str, const char *delim, char **saveptr);
 size_t iio_strlcpy(char * __restrict dst, const char * __restrict src, size_t dsize);
 char * iio_getenv (char * envvar);
 
diff --git a/utilities.c b/utilities.c
index 132c75845..87b7f516e 100644
--- a/utilities.c
+++ b/utilities.c
@@ -213,6 +213,17 @@ void iio_strerror(int err, char *buf, size_t len)
 	}
 }
 
+char *iio_strtok_r(char *str, const char *delim, char **saveptr)
+{
+#if defined(_WIN32)
+	return strtok_s(str, delim, saveptr);
+#elif defined(HAS_STRTOK_R)
+	return strtok_r(str, delim, saveptr);
+#else
+#error Need a implentation of strtok_r for this platform
+#endif
+}
+
 char *iio_strdup(const char *str)
 {
 #if defined(_WIN32)