diff --git a/src/porting.h b/src/porting.h
index 0f2007fa7..c03ae40aa 100644
--- a/src/porting.h
+++ b/src/porting.h
@@ -88,11 +88,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 	#define strtoull(x, y, z) _strtoui64(x, y, z)
 	#define strcasecmp(x, y) stricmp(x, y)
 	#define strncasecmp(x, y, n) strnicmp(x, y, n)
-
-	// We can't simply alias strlcpy() to MSVC's strcpy_s(), since strcpy_s
-	// by default raises an assertion error and aborts the program if the
-	// buffer is too small.  So we need to define our own.
-	#define strlcpy(x, y, n) mystrlcpy(x, y, n)
 #else
 	#define ALIGNOF(x) __alignof__(x)
 #endif
@@ -101,6 +96,24 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 	#define strtok_r(x, y, z) mystrtok_r(x, y, z)
 #endif
 
+// strlcpy is missing from glibc.  thanks a lot, drepper.
+// strlcpy is also missing from AIX and HP-UX because they aim to be weird.
+// We can't simply alias strlcpy to MSVC's strcpy_s, since strcpy_s by
+// default raises an assertion error and aborts the program if the buffer is
+// too small.
+#if defined(__FreeBSD__) || defined(__NetBSD__)    || \
+	defined(__OpenBSD__) || defined(__DragonFly__) || \
+	defined(__APPLE__)   ||                           \
+	defined(__sun)       || defined(sun)           || \
+	defined(__QNX__)     || defined(__QNXNTO__)
+	#define HAVE_STRLCPY
+#endif
+
+// So we need to define our own.
+#ifndef HAVE_STRLCPY
+	#define strlcpy(d, s, n) mystrlcpy(d, s, n)
+#endif
+
 #define PADDING(x, y) ((ALIGNOF(y) - ((uintptr_t)(x) & (ALIGNOF(y) - 1))) & (ALIGNOF(y) - 1))
 
 namespace porting
diff --git a/src/script/common/c_content.cpp b/src/script/common/c_content.cpp
index 4e26dc245..8e4da1b05 100644
--- a/src/script/common/c_content.cpp
+++ b/src/script/common/c_content.cpp
@@ -30,6 +30,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "log.h"
 #include "tool.h"
 #include "serverobject.h"
+#include "porting.h"
 #include "mapgen.h"
 #include "json/json.h"