From 657273ac43e4dffda75d0bc58d9523907b8456b4 Mon Sep 17 00:00:00 2001
From: Ed Braaten <ed.braaten@protonmail.ch>
Date: Sat, 20 Apr 2024 15:10:11 -0700
Subject: [PATCH] Proposed fix to issue #77 Build Fail on Fedora
(https://github.com/OpenRTX/dmrconfig/issues/77)
Provides BSD strnstr() function if not defined by build
environment's C library.
---
radio.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/radio.c b/radio.c
index e81192f..b084e30 100644
--- a/radio.c
+++ b/radio.c
@@ -63,6 +63,37 @@ int radio_progress; // Read/write progress counter
static radio_device_t *device; // Device-dependent interface
+
+// strnstr() is a BSD function not found in many GNU/Linux distros
+#ifndef strnstr
+
+/*
+ * Find the first occurrence of find in s, where the search is limited to the
+ * first slen characters of s.
+ */
+char *
+strnstr(const char *s, const char *find, size_t slen)
+{
+ char c, sc;
+ size_t len;
+
+ if ((c = *find++) != '\0') {
+ len = strlen(find);
+ do {
+ do {
+ if (slen-- < 1 || (sc = *s++) == '\0')
+ return (NULL);
+ } while (sc != c);
+ if (len > slen)
+ return (NULL);
+ } while (strncmp(s, find, len) != 0);
+ s--;
+ }
+ return ((char *)s);
+}
+#endif
+
+
//
// Close the serial port.
//