diff --git a/newlib/libc/include/sys/unistd.h b/newlib/libc/include/sys/unistd.h
index 05962219a..c811eb649 100644
--- a/newlib/libc/include/sys/unistd.h
+++ b/newlib/libc/include/sys/unistd.h
@@ -582,6 +582,10 @@ int	_EXFUN(unlinkat, (int, const char *, int));
 #define _CS_POSIX_V7_THREADS_LDFLAGS          19
 #define _CS_V7_ENV                            20
 #define _CS_V6_ENV                            _CS_V7_ENV
+#define _CS_LFS_CFLAGS                        21
+#define _CS_LFS_LDFLAGS                       22
+#define _CS_LFS_LIBS                          23
+#define _CS_LFS_LINTFLAGS                     24
 #endif
 
 #ifdef __cplusplus
diff --git a/winsup/cygwin/sysconf.cc b/winsup/cygwin/sysconf.cc
index ecd9aeb93..9563b889a 100644
--- a/winsup/cygwin/sysconf.cc
+++ b/winsup/cygwin/sysconf.cc
@@ -719,10 +719,14 @@ static struct
   {ls ("")},				/* _CS_POSIX_V7_THREADS_CFLAGS */
   {ls ("")},				/* _CS_POSIX_V7_THREADS_LDFLAGS */
   {ls ("POSIXLY_CORRECT=1")},		/* _CS_V7_ENV */
+  {ls ("")},				/* _CS_LFS_CFLAGS */
+  {ls ("")},				/* _CS_LFS_LDFLAGS */
+  {ls ("")},				/* _CS_LFS_LIBS */
+  {ls ("")},				/* _CS_LFS_LINTFLAGS */
 };
 
 #define CS_MIN _CS_PATH
-#define CS_MAX _CS_V7_ENV
+#define CS_MAX _CS_LFS_LINTFLAGS
 
 extern "C" size_t
 confstr (int in, char *buf, size_t len)
diff --git a/winsup/utils/getconf.c b/winsup/utils/getconf.c
index 256bddb1a..5ac84abd2 100644
--- a/winsup/utils/getconf.c
+++ b/winsup/utils/getconf.c
@@ -97,6 +97,10 @@ static const struct conf_variable conf_table[] =
   { "XBS5_WIDTH_RESTRICTED_ENVS",	CONFSTR,	_CS_XBS5_WIDTH_RESTRICTED_ENVS	},
   { "V7_ENV",				CONFSTR,	_CS_V7_ENV	},
   { "V6_ENV",				CONFSTR,	_CS_V6_ENV	},
+  { "LFS_CFLAGS",			CONFSTR,	_CS_LFS_CFLAGS	},
+  { "LFS_LDFLAGS",			CONFSTR,	_CS_LFS_LDFLAGS	},
+  { "LFS_LIBS",				CONFSTR,	_CS_LFS_LIBS	},
+  { "LFS_LINTFLAGS",			CONFSTR,	_CS_LFS_LINTFLAGS	},
 
   /* Symbolic constants from <limits.h> */
   { "_POSIX_AIO_LISTIO_MAX",		CONSTANT,	_POSIX_AIO_LISTIO_MAX	},