diff --git a/include/MISCFILES b/include/MISCFILES
index c94439f..d3f827c 100644
--- a/include/MISCFILES
+++ b/include/MISCFILES
@@ -36,6 +36,7 @@ MISCFILES = 00README COPYMINT COPYING COPYING.LIB MISCFILES \
 	ifaddrs.h \
 	inttypes.h \
 	iovec.h \
+	langinfo.h \
 	lastlog.h \
 	libgen.h \
 	limits.h \
@@ -48,6 +49,7 @@ MISCFILES = 00README COPYMINT COPYING COPYING.LIB MISCFILES \
 	mintbind.h \
 	mntent.h \
 	netdb.h \
+	nl_types.h \
 	obstack.h \
 	osbind.h \
 	paths.h \
diff --git a/include/langinfo.h b/include/langinfo.h
new file mode 100644
index 0000000..2d5e2c8
--- /dev/null
+++ b/include/langinfo.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef _LANGINFO_H_
+#define _LANGINFO_H_
+#include <sys/cdefs.h>
+#include <nl_types.h>
+struct __locale_t;
+typedef struct __locale_t* locale_t;
+__BEGIN_DECLS
+#define CODESET 1
+#define D_T_FMT 2
+#define D_FMT 3
+#define T_FMT 4
+#define T_FMT_AMPM 5
+#define AM_STR 6
+#define PM_STR 7
+#define DAY_1 8
+#define DAY_2 9
+#define DAY_3 10
+#define DAY_4 11
+#define DAY_5 12
+#define DAY_6 13
+#define DAY_7 14
+#define ABDAY_1 15
+#define ABDAY_2 16
+#define ABDAY_3 17
+#define ABDAY_4 18
+#define ABDAY_5 19
+#define ABDAY_6 20
+#define ABDAY_7 21
+#define MON_1 22
+#define MON_2 23
+#define MON_3 24
+#define MON_4 25
+#define MON_5 26
+#define MON_6 27
+#define MON_7 28
+#define MON_8 29
+#define MON_9 30
+#define MON_10 31
+#define MON_11 32
+#define MON_12 33
+#define ABMON_1 34
+#define ABMON_2 35
+#define ABMON_3 36
+#define ABMON_4 37
+#define ABMON_5 38
+#define ABMON_6 39
+#define ABMON_7 40
+#define ABMON_8 41
+#define ABMON_9 42
+#define ABMON_10 43
+#define ABMON_11 44
+#define ABMON_12 45
+#define ERA 46
+#define ERA_D_FMT 47
+#define ERA_D_T_FMT 48
+#define ERA_T_FMT 49
+#define ALT_DIGITS 50
+#define RADIXCHAR 51
+#define THOUSEP 52
+#define YESEXPR 53
+#define NOEXPR 54
+#define CRNCYSTR 55
+char* nl_langinfo(nl_item __item);
+char* nl_langinfo_l(nl_item __item, locale_t __l);
+__END_DECLS
+#endif
diff --git a/include/nl_types.h b/include/nl_types.h
new file mode 100644
index 0000000..8b0aac7
--- /dev/null
+++ b/include/nl_types.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#pragma once
+/**
+ * @file nl_types.h
+ * @brief Message catalogs.
+ *
+ * Android offers a no-op implementation of these functions to ease porting of historical software.
+ */
+#include <sys/cdefs.h>
+__BEGIN_DECLS
+/**
+ * catopen() flag to use the current locale.
+ */
+#define NL_CAT_LOCALE 1
+/**
+ * catgets() default set number.
+ */
+#define NL_SETD 1
+/** Message catalog type. */
+typedef void* nl_catd;
+/** The type of the constants in `<langinfo.h>`, used by nl_langinfo(). */
+typedef int nl_item;
+/**
+ * [catopen(3)](https://man7.org/linux/man-pages/man3/catopen.3.html) opens a message catalog.
+ */
+nl_catd catopen(const char*  __name, int __flag);
+/**
+ * [catgets(3)](https://man7.org/linux/man-pages/man3/catgets.3.html) translates the given message
+ * using the given message catalog.
+ */
+char* catgets(nl_catd  __catalog, int __set_number, int __msg_number, const char*  __msg);
+/**
+ * [catclose(3)](https://man7.org/linux/man-pages/man3/catclose.3.html) closes a message catalog.
+ */
+int catclose(nl_catd  __catalog);
+__END_DECLS
\ No newline at end of file
diff --git a/posix/SRCFILES b/posix/SRCFILES
index 852b497..8010f0d 100644
--- a/posix/SRCFILES
+++ b/posix/SRCFILES
@@ -22,6 +22,8 @@ SRCFILES = \
 	nanosleep.c \
 	clock_gettime.c \
 	clock_nanosleep.c \
+	nl_types.c \
+	langinfo.c \
 	posix_fallocate.c \
 	pread.c \
 	pwrite.c \
diff --git a/posix/langinfo.c b/posix/langinfo.c
new file mode 100644
index 0000000..8ef9151
--- /dev/null
+++ b/posix/langinfo.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <langinfo.h>
+#include <stdlib.h>
+char* nl_langinfo(nl_item item) {
+  const char* result = "";
+  switch (item) {
+    case CODESET: result = (MB_CUR_MAX == 1) ? "ASCII" : "UTF-8"; break;
+    case D_T_FMT: result = "%F %T %z"; break;
+    case D_FMT: result = "%F"; break;
+    case T_FMT: result = "%T"; break;
+    case T_FMT_AMPM: result = "%I:%M:%S %p"; break;
+    case AM_STR: result = "AM"; break;
+    case PM_STR: result = "PM"; break;
+    case DAY_1: result = "Sunday"; break;
+    case DAY_2: result = "Monday"; break;
+    case DAY_3: result = "Tuesday"; break;
+    case DAY_4: result = "Wednesday"; break;
+    case DAY_5: result = "Thursday"; break;
+    case DAY_6: result = "Friday"; break;
+    case DAY_7: result = "Saturday"; break;
+    case ABDAY_1: result = "Sun"; break;
+    case ABDAY_2: result = "Mon"; break;
+    case ABDAY_3: result = "Tue"; break;
+    case ABDAY_4: result = "Wed"; break;
+    case ABDAY_5: result = "Thu"; break;
+    case ABDAY_6: result = "Fri"; break;
+    case ABDAY_7: result = "Sat"; break;
+    case MON_1: result = "January"; break;
+    case MON_2: result = "February"; break;
+    case MON_3: result = "March"; break;
+    case MON_4: result = "April"; break;
+    case MON_5: result = "May"; break;
+    case MON_6: result = "June"; break;
+    case MON_7: result = "July"; break;
+    case MON_8: result = "August"; break;
+    case MON_9: result = "September"; break;
+    case MON_10: result = "October"; break;
+    case MON_11: result = "November"; break;
+    case MON_12: result = "December"; break;
+    case ABMON_1: result = "Jan"; break;
+    case ABMON_2: result = "Feb"; break;
+    case ABMON_3: result = "Mar"; break;
+    case ABMON_4: result = "Apr"; break;
+    case ABMON_5: result = "May"; break;
+    case ABMON_6: result = "Jun"; break;
+    case ABMON_7: result = "Jul"; break;
+    case ABMON_8: result = "Aug"; break;
+    case ABMON_9: result = "Sep"; break;
+    case ABMON_10: result = "Oct"; break;
+    case ABMON_11: result = "Nov"; break;
+    case ABMON_12: result = "Dec"; break;
+    case ERA: result = ""; break;
+    case ERA_D_FMT: result = ""; break;
+    case ERA_D_T_FMT: result = ""; break;
+    case ERA_T_FMT: result = ""; break;
+    case ALT_DIGITS: result = ""; break;
+    case RADIXCHAR: result = "."; break;
+    case THOUSEP: result = ""; break;
+    case YESEXPR: result = "^[yY]"; break;
+    case NOEXPR: result = "^[nN]"; break;
+    case CRNCYSTR: result = ""; break;
+    default: break;
+  }
+  return (char*)result;
+}
+char* nl_langinfo_l(nl_item item, locale_t l) {
+  return nl_langinfo(item);
+}
diff --git a/posix/nl_types.c b/posix/nl_types.c
new file mode 100644
index 0000000..45fcdcb
--- /dev/null
+++ b/posix/nl_types.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <nl_types.h>
+#include <errno.h>
+
+nl_catd catopen(const char *name, int flag) {
+  return (nl_catd)(-1);
+}
+
+char *catgets(nl_catd catalog, int set_number, int message_number,
+                     const char *message ){
+  return (char*)message;
+}
+
+int catclose(nl_catd catalog) {
+  // Since we didn't hand out a valid nl_catd, you can't be returning one to us.
+  errno = EBADF;
+  return -1;
+}
\ No newline at end of file