Add support for sendfile() on Solaris.

trunk/Makefile

@@ -20,7 +20,7 @@ bsd linux:
 	make darkhttpd
 
 solaris:
-	make darkhttpd LIBS=-lxnet
+	make darkhttpd LIBS="-lxnet -lsendfile"
 
 darkhttpd: darkhttpd.c
 	$(CC) $(CFLAGS) $(LIBS) darkhttpd.c -o darkhttpd

trunk/darkhttpd.c

@@ -33,6 +33,10 @@ static const int debug = 1;
 #include <sys/sendfile.h>
 #endif
 
+#ifdef __sun__
+#include <sys/sendfile.h>
+#endif
+
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
@@ -2041,7 +2045,7 @@ static ssize_t send_from_file(const int s, const int fd,
     }
     else return size;
 #else
-#ifdef __linux
+#if defined(__linux) || defined(__sun__)
     return sendfile(s, fd, &ofs, size);
 #else
     #define BUFSIZE 20000