From 14fcacaf27451ab30d00c6d0722644a9636e3a1a Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Tue, 12 Nov 2019 19:43:42 -0600
Subject: [PATCH] libs/libc/stdio/lib_libfgets.c:  Because of how the function
 is defined, getline() canot be used on platforms that require CR-LF line
 terminations.

---
 libs/libc/stdio/lib_getdelim.c | 22 +++++++++++++++++++++-
 libs/libc/stdio/lib_libfgets.c |  1 +
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/libs/libc/stdio/lib_getdelim.c b/libs/libc/stdio/lib_getdelim.c
index c01dc22a170..976049dce45 100644
--- a/libs/libc/stdio/lib_getdelim.c
+++ b/libs/libc/stdio/lib_getdelim.c
@@ -43,6 +43,24 @@
 
 #include "libc.h"
 
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Some environments may return CR as end-of-line, others LF, and others
+ * both.  Because of the definition of the getline() function, it can handle
+ * only single character line terminators.
+ */
+
+#undef HAVE_GETLINE
+#if defined(CONFIG_EOL_IS_CR)
+#  define HAVE_GETLINE 1
+#  define EOLCH        '/r'
+#elif defined(CONFIG_EOL_IS_LF)
+#  define HAVE_GETLINE 1
+#  define EOLCH        '/n'
+#endif
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -184,7 +202,9 @@ errout:
  *
  ****************************************************************************/
 
+#ifdef HAVE_GETLINE
 ssize_t getline(FAR char **lineptr, size_t *n, FAR FILE *stream)
 {
-  return getdelim(lineptr, n, '\n', stream);
+  return getdelim(lineptr, n, EOLCH, stream);
 }
+#endif
diff --git a/libs/libc/stdio/lib_libfgets.c b/libs/libc/stdio/lib_libfgets.c
index 4126d807382..4762aed3343 100644
--- a/libs/libc/stdio/lib_libfgets.c
+++ b/libs/libc/stdio/lib_libfgets.c
@@ -52,6 +52,7 @@
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
+
 /* Some environments may return CR as end-of-line, others LF, and others
  * both.  If not specified, the logic here assumes either (but not both) as
  * the default.