diff --git a/ChangeLog b/ChangeLog
index 0a85999575..5278330606 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,6 +5,8 @@ Sun Feb 11 16:00:30 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
 
 	* gc.c (rb_gc, Init_stack): ditto.
 
+	* configure.in: add ac_cv_func_getpgrp_void=yes on DJGPP.
+
 Fri Feb 10 00:00:30 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
 
 	* win32/win32.c (win32_stat): replace stat for enable when pathname
diff --git a/configure.in b/configure.in
index 2dce3d9fcb..609d68510a 100644
--- a/configure.in
+++ b/configure.in
@@ -194,6 +194,8 @@ mingw*)		LIBS="-lwsock32 -lmsvcrt $LIBS"
 		ac_cv_func_times=yes;;
 os2_emx*)	LIBS="-lm $LIBS"
 		ac_cv_lib_dir_opendir=no;;
+msdosdjgpp*)	LIBS="-lm $LIBS"
+		ac_cv_func_getpgrp_void=yes;;
 freebsd*)	LIBS="-lm $LIBS"
 		AC_CACHE_CHECK([whether -lxpg4 has to be linked],
 		  rb_cv_lib_xpg4_needed,