--- dosbox-0.74-2/configure.ac	2018-08-27 12:32:24.000000000 +0000
+++ dosbox-0.74-2/configure.ac.new	2019-02-17 22:24:31.631418267 +0000
@@ -525,6 +525,11 @@ case "$host" in
        AC_DEFINE(BSD, 1, [Compiling on BSD])
        AC_DEFINE(C_DIRECTSERIAL, 1, [ Define to 1 if you want serial passthrough support (Win32, Posix and OS/2).])
        ;;
+    *-*-solaris*)
+       AC_DEFINE(SOLARIS, 1, [Compiling on Oracle Solaris])
+       AC_DEFINE(C_DIRECTSERIAL, 1, [ Define to 1 if you want serial passthrough support (Win32, Posix and OS/2).])
+       LIBS="$LIBS -lnsl -lsocket"
+       ;;
     *-*-os2-emx*)
        AC_DEFINE(OS2, 1, [Compiling on OS/2 EMX])
        AC_DEFINE(C_DIRECTSERIAL, 1, [ Define to 1 if you want serial passthrough support (Win32, Posix and OS/2).])
--- dosbox-0.74/src/hardware/serialport/libserial.cpp	Mon May 10 19:43:54 2010
+++ dosbox-0.74-patch/src/hardware/serialport/libserial.cpp	Fri Jun 25 15:07:06 2010
@@ -254,7 +254,7 @@
 }
 #endif
 
-#if defined (LINUX) || defined (MACOSX) || defined (BSD)
+#if defined (LINUX) || defined (MACOSX) || defined (BSD) || defined (SOLARIS)
 
 #include <string.h> // strlen
 #include <stdlib.h>