diff --git a/libc-test/build.rs b/libc-test/build.rs
index 984a63ac8fb3194357fa295dcdabe309160b7e46..06cdfe88f6527d24e10201d27a4838739e129a39 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -100,10 +100,12 @@ fn main() {
     if android {
         cfg.header("arpa/inet.h");
         cfg.header("time64.h");
+        cfg.header("xlocale.h");
     } else if !windows {
         cfg.header("glob.h");
         cfg.header("ifaddrs.h");
         cfg.header("sys/statvfs.h");
+        cfg.header("langinfo.h");
 
         if !openbsd && !freebsd && !dragonfly {
             cfg.header("sys/quota.h");
@@ -114,6 +116,7 @@ fn main() {
 
             if !netbsd && !openbsd {
                 cfg.header("execinfo.h");
+                cfg.header("xlocale.h");
             }
         }
     }
diff --git a/src/unix/bsd/apple/mod.rs b/src/unix/bsd/apple/mod.rs
index f4c3e197d1b542d93d8ccf8aca7c8d873671d9d1..fc18a6d14adbae7124f652097a5dae3f3f98be08 100644
--- a/src/unix/bsd/apple/mod.rs
+++ b/src/unix/bsd/apple/mod.rs
@@ -18,6 +18,7 @@ pub type fsblkcnt_t = ::c_uint;
 pub type fsfilcnt_t = ::c_uint;
 pub type speed_t = ::c_ulong;
 pub type tcflag_t = ::c_ulong;
+pub type nl_item = ::c_int;
 
 pub enum timezone {}
 
@@ -286,6 +287,88 @@ s! {
     }
 }
 
+pub const LC_COLLATE_MASK: ::c_int = (1 << 0);
+pub const LC_CTYPE_MASK: ::c_int = (1 << 1);
+pub const LC_MESSAGES_MASK: ::c_int = (1 << 2);
+pub const LC_MONETARY_MASK: ::c_int = (1 << 3);
+pub const LC_NUMERIC_MASK: ::c_int = (1 << 4);
+pub const LC_TIME_MASK: ::c_int = (1 << 5);
+pub const LC_ALL_MASK: ::c_int = LC_COLLATE_MASK
+                               | LC_CTYPE_MASK
+                               | LC_MESSAGES_MASK
+                               | LC_MONETARY_MASK
+                               | LC_NUMERIC_MASK
+                               | LC_TIME_MASK;
+
+pub const CODESET: ::nl_item = 0;
+pub const D_T_FMT: ::nl_item = 1;
+pub const D_FMT: ::nl_item = 2;
+pub const T_FMT: ::nl_item = 3;
+pub const T_FMT_AMPM: ::nl_item = 4;
+pub const AM_STR: ::nl_item = 5;
+pub const PM_STR: ::nl_item = 6;
+
+pub const DAY_1: ::nl_item = 7;
+pub const DAY_2: ::nl_item = 8;
+pub const DAY_3: ::nl_item = 9;
+pub const DAY_4: ::nl_item = 10;
+pub const DAY_5: ::nl_item = 11;
+pub const DAY_6: ::nl_item = 12;
+pub const DAY_7: ::nl_item = 13;
+
+pub const ABDAY_1: ::nl_item = 14;
+pub const ABDAY_2: ::nl_item = 15;
+pub const ABDAY_3: ::nl_item = 16;
+pub const ABDAY_4: ::nl_item = 17;
+pub const ABDAY_5: ::nl_item = 18;
+pub const ABDAY_6: ::nl_item = 19;
+pub const ABDAY_7: ::nl_item = 20;
+
+pub const MON_1: ::nl_item = 21;
+pub const MON_2: ::nl_item = 22;
+pub const MON_3: ::nl_item = 23;
+pub const MON_4: ::nl_item = 24;
+pub const MON_5: ::nl_item = 25;
+pub const MON_6: ::nl_item = 26;
+pub const MON_7: ::nl_item = 27;
+pub const MON_8: ::nl_item = 28;
+pub const MON_9: ::nl_item = 29;
+pub const MON_10: ::nl_item = 30;
+pub const MON_11: ::nl_item = 31;
+pub const MON_12: ::nl_item = 32;
+
+pub const ABMON_1: ::nl_item = 33;
+pub const ABMON_2: ::nl_item = 34;
+pub const ABMON_3: ::nl_item = 35;
+pub const ABMON_4: ::nl_item = 36;
+pub const ABMON_5: ::nl_item = 37;
+pub const ABMON_6: ::nl_item = 38;
+pub const ABMON_7: ::nl_item = 39;
+pub const ABMON_8: ::nl_item = 40;
+pub const ABMON_9: ::nl_item = 41;
+pub const ABMON_10: ::nl_item = 42;
+pub const ABMON_11: ::nl_item = 43;
+pub const ABMON_12: ::nl_item = 44;
+
+pub const ERA: ::nl_item = 45;
+pub const ERA_D_FMT: ::nl_item = 46;
+pub const ERA_D_T_FMT: ::nl_item = 47;
+pub const ERA_T_FMT: ::nl_item = 48;
+pub const ALT_DIGITS: ::nl_item = 49;
+
+pub const RADIXCHAR: ::nl_item = 50;
+pub const THOUSEP: ::nl_item = 51;
+
+pub const YESEXPR: ::nl_item = 52;
+pub const NOEXPR: ::nl_item = 53;
+
+pub const YESSTR: ::nl_item = 54;
+pub const NOSTR: ::nl_item = 55;
+
+pub const CRNCYSTR: ::nl_item = 56;
+
+pub const D_MD_ORDER: ::nl_item = 57;
+
 pub const EXIT_FAILURE: ::c_int = 1;
 pub const EXIT_SUCCESS: ::c_int = 0;
 pub const RAND_MAX: ::c_int = 2147483647;
@@ -1027,6 +1110,14 @@ extern {
                    name: *mut ::c_char,
                    termp: *mut termios,
                    winp: *mut ::winsize) -> ::pid_t;
+    pub fn duplocale(base: ::locale_t) -> ::locale_t;
+    pub fn freelocale(loc: ::locale_t) -> ::c_int;
+    pub fn localeconv_l(loc: ::locale_t) -> *mut lconv;
+    pub fn newlocale(mask: ::c_int,
+                     locale: *const ::c_char,
+                     base: ::locale_t) -> ::locale_t;
+    pub fn uselocale(loc: ::locale_t) -> ::locale_t;
+    pub fn querylocale(mask: ::c_int, loc: ::locale_t) -> *const ::c_char;
 }
 
 cfg_if! {
diff --git a/src/unix/bsd/freebsdlike/mod.rs b/src/unix/bsd/freebsdlike/mod.rs
index 8828401e4b5a3d49e1b084b1c497d0cbced0f632..b32d4fb5bb423a5a40cfbab34b343ad210916240 100644
--- a/src/unix/bsd/freebsdlike/mod.rs
+++ b/src/unix/bsd/freebsdlike/mod.rs
@@ -9,6 +9,7 @@ pub type pthread_rwlock_t = *mut ::c_void;
 pub type pthread_key_t = ::c_int;
 pub type tcflag_t = ::c_uint;
 pub type speed_t = ::c_uint;
+pub type nl_item = ::c_int;
 
 pub enum timezone {}
 
@@ -149,6 +150,101 @@ s! {
     }
 }
 
+pub const LC_COLLATE_MASK: ::c_int = (1 << 0);
+pub const LC_CTYPE_MASK: ::c_int = (1 << 1);
+pub const LC_MESSAGES_MASK: ::c_int = (1 << 2);
+pub const LC_MONETARY_MASK: ::c_int = (1 << 3);
+pub const LC_NUMERIC_MASK: ::c_int = (1 << 4);
+pub const LC_TIME_MASK: ::c_int = (1 << 5);
+pub const LC_ALL_MASK: ::c_int = LC_COLLATE_MASK
+                               | LC_CTYPE_MASK
+                               | LC_MESSAGES_MASK
+                               | LC_MONETARY_MASK
+                               | LC_NUMERIC_MASK
+                               | LC_TIME_MASK;
+
+pub const CODESET: ::nl_item = 0;
+pub const D_T_FMT: ::nl_item = 1;
+pub const D_FMT: ::nl_item = 2;
+pub const T_FMT: ::nl_item = 3;
+pub const T_FMT_AMPM: ::nl_item = 4;
+pub const AM_STR: ::nl_item = 5;
+pub const PM_STR: ::nl_item = 6;
+
+pub const DAY_1: ::nl_item = 7;
+pub const DAY_2: ::nl_item = 8;
+pub const DAY_3: ::nl_item = 9;
+pub const DAY_4: ::nl_item = 10;
+pub const DAY_5: ::nl_item = 11;
+pub const DAY_6: ::nl_item = 12;
+pub const DAY_7: ::nl_item = 13;
+
+pub const ABDAY_1: ::nl_item = 14;
+pub const ABDAY_2: ::nl_item = 15;
+pub const ABDAY_3: ::nl_item = 16;
+pub const ABDAY_4: ::nl_item = 17;
+pub const ABDAY_5: ::nl_item = 18;
+pub const ABDAY_6: ::nl_item = 19;
+pub const ABDAY_7: ::nl_item = 20;
+
+pub const MON_1: ::nl_item = 21;
+pub const MON_2: ::nl_item = 22;
+pub const MON_3: ::nl_item = 23;
+pub const MON_4: ::nl_item = 24;
+pub const MON_5: ::nl_item = 25;
+pub const MON_6: ::nl_item = 26;
+pub const MON_7: ::nl_item = 27;
+pub const MON_8: ::nl_item = 28;
+pub const MON_9: ::nl_item = 29;
+pub const MON_10: ::nl_item = 30;
+pub const MON_11: ::nl_item = 31;
+pub const MON_12: ::nl_item = 32;
+
+pub const ABMON_1: ::nl_item = 33;
+pub const ABMON_2: ::nl_item = 34;
+pub const ABMON_3: ::nl_item = 35;
+pub const ABMON_4: ::nl_item = 36;
+pub const ABMON_5: ::nl_item = 37;
+pub const ABMON_6: ::nl_item = 38;
+pub const ABMON_7: ::nl_item = 39;
+pub const ABMON_8: ::nl_item = 40;
+pub const ABMON_9: ::nl_item = 41;
+pub const ABMON_10: ::nl_item = 42;
+pub const ABMON_11: ::nl_item = 43;
+pub const ABMON_12: ::nl_item = 44;
+
+pub const ERA: ::nl_item = 45;
+pub const ERA_D_FMT: ::nl_item = 46;
+pub const ERA_D_T_FMT: ::nl_item = 47;
+pub const ERA_T_FMT: ::nl_item = 48;
+pub const ALT_DIGITS: ::nl_item = 49;
+
+pub const RADIXCHAR: ::nl_item = 50;
+pub const THOUSEP: ::nl_item = 51;
+
+pub const YESEXPR: ::nl_item = 52;
+pub const NOEXPR: ::nl_item = 53;
+
+pub const YESSTR: ::nl_item = 54;
+pub const NOSTR: ::nl_item = 55;
+
+pub const CRNCYSTR: ::nl_item = 56;
+
+pub const D_MD_ORDER: ::nl_item = 57;
+
+pub const ALTMON_1: ::nl_item = 58;
+pub const ALTMON_2: ::nl_item = 59;
+pub const ALTMON_3: ::nl_item = 60;
+pub const ALTMON_4: ::nl_item = 61;
+pub const ALTMON_5: ::nl_item = 62;
+pub const ALTMON_6: ::nl_item = 63;
+pub const ALTMON_7: ::nl_item = 64;
+pub const ALTMON_8: ::nl_item = 65;
+pub const ALTMON_9: ::nl_item = 66;
+pub const ALTMON_10: ::nl_item = 67;
+pub const ALTMON_11: ::nl_item = 68;
+pub const ALTMON_12: ::nl_item = 69;
+
 pub const EXIT_FAILURE: ::c_int = 1;
 pub const EXIT_SUCCESS: ::c_int = 0;
 pub const EOF: ::c_int = -1;
@@ -626,7 +722,14 @@ extern {
                    name: *mut ::c_char,
                    termp: *mut termios,
                    winp: *mut ::winsize) -> ::pid_t;
-
+    pub fn nl_langinfo_l(item: ::nl_item, locale: ::locale_t) -> *mut ::c_char;
+    pub fn duplocale(base: ::locale_t) -> ::locale_t;
+    pub fn freelocale(loc: ::locale_t) -> ::c_int;
+    pub fn newlocale(mask: ::c_int,
+                     locale: *const ::c_char,
+                     base: ::locale_t) -> ::locale_t;
+    pub fn uselocale(loc: ::locale_t) -> ::locale_t;
+    pub fn querylocale(mask: ::c_int, loc: ::locale_t) -> *const ::c_char;
     pub fn pthread_set_name_np(tid: ::pthread_t, name: *const ::c_char);
     pub fn pthread_attr_get_np(tid: ::pthread_t,
                                attr: *mut ::pthread_attr_t) -> ::c_int;
diff --git a/src/unix/bsd/openbsdlike/bitrig.rs b/src/unix/bsd/openbsdlike/bitrig.rs
index aeba9fcfec798203f1ec886fcace53975a6058c9..32e7b3061db0f643f1e29f26f04980e0382ab9e4 100644
--- a/src/unix/bsd/openbsdlike/bitrig.rs
+++ b/src/unix/bsd/openbsdlike/bitrig.rs
@@ -135,6 +135,40 @@ s! {
     }
 }
 
+pub const LC_COLLATE_MASK: ::c_int = (1 << 0);
+pub const LC_CTYPE_MASK: ::c_int = (1 << 1);
+pub const LC_MESSAGES_MASK: ::c_int = (1 << 2);
+pub const LC_MONETARY_MASK: ::c_int = (1 << 3);
+pub const LC_NUMERIC_MASK: ::c_int = (1 << 4);
+pub const LC_TIME_MASK: ::c_int = (1 << 5);
+pub const LC_ALL_MASK: ::c_int = LC_COLLATE_MASK
+                               | LC_CTYPE_MASK
+                               | LC_MESSAGES_MASK
+                               | LC_MONETARY_MASK
+                               | LC_NUMERIC_MASK
+                               | LC_TIME_MASK;
+
+pub const ERA: ::nl_item = 52;
+pub const ERA_D_FMT: ::nl_item = 53;
+pub const ERA_D_T_FMT: ::nl_item = 54;
+pub const ERA_T_FMT: ::nl_item = 55;
+pub const ALT_DIGITS: ::nl_item = 56;
+
+pub const D_MD_ORDER: ::nl_item = 57;
+
+pub const ALTMON_1: ::nl_item = 58;
+pub const ALTMON_2: ::nl_item = 59;
+pub const ALTMON_3: ::nl_item = 60;
+pub const ALTMON_4: ::nl_item = 61;
+pub const ALTMON_5: ::nl_item = 62;
+pub const ALTMON_6: ::nl_item = 63;
+pub const ALTMON_7: ::nl_item = 64;
+pub const ALTMON_8: ::nl_item = 65;
+pub const ALTMON_9: ::nl_item = 66;
+pub const ALTMON_10: ::nl_item = 67;
+pub const ALTMON_11: ::nl_item = 68;
+pub const ALTMON_12: ::nl_item = 69;
+
 pub const O_CLOEXEC: ::c_int = 0x10000;
 
 pub const MS_SYNC : ::c_int = 0x0002;
@@ -271,4 +305,12 @@ extern {
                         newp: *mut ::c_void,
                         newlen: ::size_t)
                         -> ::c_int;
+    pub fn nl_langinfo_l(item: ::nl_item, locale: ::locale_t) -> *mut ::c_char;
+    pub fn duplocale(base: ::locale_t) -> ::locale_t;
+    pub fn freelocale(loc: ::locale_t) -> ::c_int;
+    pub fn newlocale(mask: ::c_int,
+                     locale: *const ::c_char,
+                     base: ::locale_t) -> ::locale_t;
+    pub fn uselocale(loc: ::locale_t) -> ::locale_t;
+    pub fn querylocale(mask: ::c_int, loc: ::locale_t) -> *const ::c_char;
 }
diff --git a/src/unix/bsd/openbsdlike/mod.rs b/src/unix/bsd/openbsdlike/mod.rs
index c772e2e9c72bc798559ec884a240a72527424367..6debacf5f7707deaae8838a25cffe8eb3ff1d06d 100644
--- a/src/unix/bsd/openbsdlike/mod.rs
+++ b/src/unix/bsd/openbsdlike/mod.rs
@@ -8,6 +8,7 @@ pub type pthread_key_t = ::c_int;
 pub type rlim_t = u64;
 pub type speed_t = ::c_uint;
 pub type tcflag_t = ::c_uint;
+pub type nl_item = c_long;
 pub type clockid_t = ::c_int;
 
 pub enum timezone {}
@@ -52,6 +53,65 @@ s! {
     }
 }
 
+pub const D_T_FMT: ::nl_item = 0;
+pub const D_FMT: ::nl_item = 1;
+pub const T_FMT: ::nl_item = 2;
+pub const T_FMT_AMPM: ::nl_item = 3;
+pub const AM_STR: ::nl_item = 4;
+pub const PM_STR: ::nl_item = 5;
+
+pub const DAY_1: ::nl_item = 6;
+pub const DAY_2: ::nl_item = 7;
+pub const DAY_3: ::nl_item = 8;
+pub const DAY_4: ::nl_item = 9;
+pub const DAY_5: ::nl_item = 10;
+pub const DAY_6: ::nl_item = 11;
+pub const DAY_7: ::nl_item = 12;
+
+pub const ABDAY_1: ::nl_item = 13;
+pub const ABDAY_2: ::nl_item = 14;
+pub const ABDAY_3: ::nl_item = 15;
+pub const ABDAY_4: ::nl_item = 16;
+pub const ABDAY_5: ::nl_item = 17;
+pub const ABDAY_6: ::nl_item = 18;
+pub const ABDAY_7: ::nl_item = 19;
+
+pub const MON_1: ::nl_item = 20;
+pub const MON_2: ::nl_item = 21;
+pub const MON_3: ::nl_item = 22;
+pub const MON_4: ::nl_item = 23;
+pub const MON_5: ::nl_item = 24;
+pub const MON_6: ::nl_item = 25;
+pub const MON_7: ::nl_item = 26;
+pub const MON_8: ::nl_item = 27;
+pub const MON_9: ::nl_item = 28;
+pub const MON_10: ::nl_item = 29;
+pub const MON_11: ::nl_item = 30;
+pub const MON_12: ::nl_item = 31;
+
+pub const ABMON_1: ::nl_item = 32;
+pub const ABMON_2: ::nl_item = 33;
+pub const ABMON_3: ::nl_item = 34;
+pub const ABMON_4: ::nl_item = 35;
+pub const ABMON_5: ::nl_item = 36;
+pub const ABMON_6: ::nl_item = 37;
+pub const ABMON_7: ::nl_item = 38;
+pub const ABMON_8: ::nl_item = 39;
+pub const ABMON_9: ::nl_item = 40;
+pub const ABMON_10: ::nl_item = 41;
+pub const ABMON_11: ::nl_item = 42;
+pub const ABMON_12: ::nl_item = 43;
+
+pub const RADIXCHAR: ::nl_item = 44;
+pub const THOUSEP: ::nl_item = 45;
+pub const YESSTR: ::nl_item = 46;
+pub const YESEXPR: ::nl_item = 47;
+pub const NOSTR: ::nl_item = 48;
+pub const NOEXPR: ::nl_item = 49;
+pub const CRNCYSTR: ::nl_item = 50;
+
+pub const CODESET: ::nl_item = 51;
+
 pub const EXIT_FAILURE : ::c_int = 1;
 pub const EXIT_SUCCESS : ::c_int = 0;
 pub const RAND_MAX : ::c_int = 2147483647;
diff --git a/src/unix/bsd/openbsdlike/netbsd.rs b/src/unix/bsd/openbsdlike/netbsd.rs
index 2d1def9c74448e35caf32b570d912e88e8eac52f..1c008dcdc942928b72a4f07cf257426778e7e741 100644
--- a/src/unix/bsd/openbsdlike/netbsd.rs
+++ b/src/unix/bsd/openbsdlike/netbsd.rs
@@ -219,6 +219,20 @@ s! {
     }
 }
 
+pub const LC_COLLATE_MASK: ::c_int = (1 << ::LC_COLLATE);
+pub const LC_CTYPE_MASK: ::c_int = (1 << ::LC_CTYPE);
+pub const LC_MONETARY_MASK: ::c_int = (1 << ::LC_MONETARY);
+pub const LC_NUMERIC_MASK: ::c_int = (1 << ::LC_NUMERIC);
+pub const LC_TIME_MASK: ::c_int = (1 << ::LC_TIME);
+pub const LC_MESSAGES_MASK: ::c_int = (1 << ::LC_MESSAGES);
+pub const LC_ALL_MASK: ::c_int = !0;
+
+pub const ERA: ::nl_item = 52;
+pub const ERA_D_FMT: ::nl_item = 53;
+pub const ERA_D_T_FMT: ::nl_item = 54;
+pub const ERA_T_FMT: ::nl_item = 55;
+pub const ALT_DIGITS: ::nl_item = 56;
+
 pub const O_CLOEXEC: ::c_int = 0x400000;
 pub const O_ALT_IO: ::c_int = 0x40000;
 pub const O_NOSIGPIPE: ::c_int = 0x1000000;
@@ -411,4 +425,10 @@ extern {
                         timeout: *const ::timespec) -> ::c_int;
     pub fn sigwaitinfo(set: *const sigset_t,
                        info: *mut siginfo_t) -> ::c_int;
+    pub fn duplocale(base: ::locale_t) -> ::locale_t;
+    pub fn freelocale(loc: ::locale_t);
+    pub fn localeconv_l(loc: ::locale_t) -> *mut lconv;
+    pub fn newlocale(mask: ::c_int,
+                     locale: *const ::c_char,
+                     base: ::locale_t) -> ::locale_t;
 }
diff --git a/src/unix/mod.rs b/src/unix/mod.rs
index 3170363ccfe39036bd0b0324611562343786d3eb..a62ec74a30773b98056411febdb9c3152808650a 100644
--- a/src/unix/mod.rs
+++ b/src/unix/mod.rs
@@ -14,6 +14,7 @@ pub type sighandler_t = ::size_t;
 pub type cc_t = ::c_uchar;
 
 pub enum DIR {}
+pub enum locale_t {}
 
 s! {
     pub struct utimbuf {
@@ -718,6 +719,7 @@ extern {
     pub fn mkstemps(template: *mut ::c_char, suffixlen: ::c_int) -> ::c_int;
     pub fn mkdtemp(template: *mut ::c_char) -> *mut ::c_char;
     pub fn futimes(fd: ::c_int, times: *const ::timeval) -> ::c_int;
+    pub fn nl_langinfo(item: ::nl_item) -> *mut ::c_char;
 }
 
 cfg_if! {
diff --git a/src/unix/notbsd/android/mod.rs b/src/unix/notbsd/android/mod.rs
index 8963ddf9146720f255281bc4688909aded150e1a..3f78e019212f1ff3da4631458f2c4834e22227a7 100644
--- a/src/unix/notbsd/android/mod.rs
+++ b/src/unix/notbsd/android/mod.rs
@@ -308,6 +308,24 @@ pub const LC_ADDRESS: ::c_int = 9;
 pub const LC_TELEPHONE: ::c_int = 10;
 pub const LC_MEASUREMENT: ::c_int = 11;
 pub const LC_IDENTIFICATION: ::c_int = 12;
+pub const LC_PAPER_MASK: ::c_int = (1 << LC_PAPER);
+pub const LC_NAME_MASK: ::c_int = (1 << LC_NAME);
+pub const LC_ADDRESS_MASK: ::c_int = (1 << LC_ADDRESS);
+pub const LC_TELEPHONE_MASK: ::c_int = (1 << LC_TELEPHONE);
+pub const LC_MEASUREMENT_MASK: ::c_int = (1 << LC_MEASUREMENT);
+pub const LC_IDENTIFICATION_MASK: ::c_int = (1 << LC_IDENTIFICATION);
+pub const LC_ALL_MASK: ::c_int = ::LC_CTYPE_MASK
+                               | ::LC_NUMERIC_MASK
+                               | ::LC_TIME_MASK
+                               | ::LC_COLLATE_MASK
+                               | ::LC_MONETARY_MASK
+                               | ::LC_MESSAGES_MASK
+                               | LC_PAPER_MASK
+                               | LC_NAME_MASK
+                               | LC_ADDRESS_MASK
+                               | LC_TELEPHONE_MASK
+                               | LC_MEASUREMENT_MASK
+                               | LC_IDENTIFICATION_MASK;
 
 pub const MAP_ANON: ::c_int = 0x0020;
 pub const MAP_ANONYMOUS: ::c_int = 0x0020;
diff --git a/src/unix/notbsd/linux/mips.rs b/src/unix/notbsd/linux/mips.rs
index 728c1a38da805f20173be68e16a9fac5a679e3c5..de17e488b808d9a486be41fdef6d62dfe1eb3418 100644
--- a/src/unix/notbsd/linux/mips.rs
+++ b/src/unix/notbsd/linux/mips.rs
@@ -300,6 +300,24 @@ pub const LC_ADDRESS: ::c_int = 9;
 pub const LC_TELEPHONE: ::c_int = 10;
 pub const LC_MEASUREMENT: ::c_int = 11;
 pub const LC_IDENTIFICATION: ::c_int = 12;
+pub const LC_PAPER_MASK: ::c_int = (1 << LC_PAPER);
+pub const LC_NAME_MASK: ::c_int = (1 << LC_NAME);
+pub const LC_ADDRESS_MASK: ::c_int = (1 << LC_ADDRESS);
+pub const LC_TELEPHONE_MASK: ::c_int = (1 << LC_TELEPHONE);
+pub const LC_MEASUREMENT_MASK: ::c_int = (1 << LC_MEASUREMENT);
+pub const LC_IDENTIFICATION_MASK: ::c_int = (1 << LC_IDENTIFICATION);
+pub const LC_ALL_MASK: ::c_int = ::LC_CTYPE_MASK
+                               | ::LC_NUMERIC_MASK
+                               | ::LC_TIME_MASK
+                               | ::LC_COLLATE_MASK
+                               | ::LC_MONETARY_MASK
+                               | ::LC_MESSAGES_MASK
+                               | LC_PAPER_MASK
+                               | LC_NAME_MASK
+                               | LC_ADDRESS_MASK
+                               | LC_TELEPHONE_MASK
+                               | LC_MEASUREMENT_MASK
+                               | LC_IDENTIFICATION_MASK;
 
 pub const MAP_NORESERVE: ::c_int = 0x400;
 pub const MAP_ANON: ::c_int = 0x800;
diff --git a/src/unix/notbsd/linux/mod.rs b/src/unix/notbsd/linux/mod.rs
index 374e0019d7774f0148389f61b02ae97574557b61..c31ed0c08600943385923dafdc11eec053747a46 100644
--- a/src/unix/notbsd/linux/mod.rs
+++ b/src/unix/notbsd/linux/mod.rs
@@ -15,6 +15,7 @@ pub type key_t = ::c_int;
 pub type shmatt_t = ::c_ulong;
 pub type mqd_t = ::c_int;
 pub type nfds_t = ::c_ulong;
+pub type nl_item = ::c_int;
 
 pub enum fpos64_t {} // TODO: fill this out with a struct
 
@@ -178,6 +179,74 @@ s! {
     }
 }
 
+pub const ABDAY_1: ::nl_item = 0x20000;
+pub const ABDAY_2: ::nl_item = 0x20001;
+pub const ABDAY_3: ::nl_item = 0x20002;
+pub const ABDAY_4: ::nl_item = 0x20003;
+pub const ABDAY_5: ::nl_item = 0x20004;
+pub const ABDAY_6: ::nl_item = 0x20005;
+pub const ABDAY_7: ::nl_item = 0x20006;
+
+pub const DAY_1: ::nl_item = 0x20007;
+pub const DAY_2: ::nl_item = 0x20008;
+pub const DAY_3: ::nl_item = 0x20009;
+pub const DAY_4: ::nl_item = 0x2000A;
+pub const DAY_5: ::nl_item = 0x2000B;
+pub const DAY_6: ::nl_item = 0x2000C;
+pub const DAY_7: ::nl_item = 0x2000D;
+
+pub const ABMON_1: ::nl_item = 0x2000E;
+pub const ABMON_2: ::nl_item = 0x2000F;
+pub const ABMON_3: ::nl_item = 0x20010;
+pub const ABMON_4: ::nl_item = 0x20011;
+pub const ABMON_5: ::nl_item = 0x20012;
+pub const ABMON_6: ::nl_item = 0x20013;
+pub const ABMON_7: ::nl_item = 0x20014;
+pub const ABMON_8: ::nl_item = 0x20015;
+pub const ABMON_9: ::nl_item = 0x20016;
+pub const ABMON_10: ::nl_item = 0x20017;
+pub const ABMON_11: ::nl_item = 0x20018;
+pub const ABMON_12: ::nl_item = 0x20019;
+
+pub const MON_1: ::nl_item = 0x2001A;
+pub const MON_2: ::nl_item = 0x2001B;
+pub const MON_3: ::nl_item = 0x2001C;
+pub const MON_4: ::nl_item = 0x2001D;
+pub const MON_5: ::nl_item = 0x2001E;
+pub const MON_6: ::nl_item = 0x2001F;
+pub const MON_7: ::nl_item = 0x20020;
+pub const MON_8: ::nl_item = 0x20021;
+pub const MON_9: ::nl_item = 0x20022;
+pub const MON_10: ::nl_item = 0x20023;
+pub const MON_11: ::nl_item = 0x20024;
+pub const MON_12: ::nl_item = 0x20025;
+
+pub const AM_STR: ::nl_item = 0x20026;
+pub const PM_STR: ::nl_item = 0x20027;
+
+pub const D_T_FMT: ::nl_item = 0x20028;
+pub const D_FMT: ::nl_item = 0x20029;
+pub const T_FMT: ::nl_item = 0x2002A;
+pub const T_FMT_AMPM: ::nl_item = 0x2002B;
+
+pub const ERA: ::nl_item = 0x2002C;
+pub const ERA_D_FMT: ::nl_item = 0x2002E;
+pub const ALT_DIGITS: ::nl_item = 0x2002F;
+pub const ERA_D_T_FMT: ::nl_item = 0x20030;
+pub const ERA_T_FMT: ::nl_item = 0x20031;
+
+pub const CODESET: ::nl_item = 14;
+
+pub const CRNCYSTR: ::nl_item = 0x4000F;
+
+pub const RADIXCHAR: ::nl_item = 0x10000;
+pub const THOUSEP: ::nl_item = 0x10001;
+
+pub const YESEXPR: ::nl_item = 0x50000;
+pub const NOEXPR: ::nl_item = 0x50001;
+pub const YESSTR: ::nl_item = 0x50002;
+pub const NOSTR: ::nl_item = 0x50003;
+
 pub const FILENAME_MAX: ::c_uint = 4096;
 pub const L_tmpnam: ::c_uint = 20;
 pub const _PC_NAME_MAX: ::c_int = 3;
@@ -541,6 +610,7 @@ extern {
                    name: *mut ::c_char,
                    termp: *const termios,
                    winp: *const ::winsize) -> ::pid_t;
+    pub fn nl_langinfo_l(item: ::nl_item, locale: ::locale_t) -> *mut ::c_char;
 }
 
 cfg_if! {
diff --git a/src/unix/notbsd/linux/other/mod.rs b/src/unix/notbsd/linux/other/mod.rs
index 337b625936733481a753000e49ef221aec5ee8c4..18b96f523a26bf842b0d126f0b71ad082c3acd6e 100644
--- a/src/unix/notbsd/linux/other/mod.rs
+++ b/src/unix/notbsd/linux/other/mod.rs
@@ -149,6 +149,24 @@ pub const LC_ADDRESS: ::c_int = 9;
 pub const LC_TELEPHONE: ::c_int = 10;
 pub const LC_MEASUREMENT: ::c_int = 11;
 pub const LC_IDENTIFICATION: ::c_int = 12;
+pub const LC_PAPER_MASK: ::c_int = (1 << LC_PAPER);
+pub const LC_NAME_MASK: ::c_int = (1 << LC_NAME);
+pub const LC_ADDRESS_MASK: ::c_int = (1 << LC_ADDRESS);
+pub const LC_TELEPHONE_MASK: ::c_int = (1 << LC_TELEPHONE);
+pub const LC_MEASUREMENT_MASK: ::c_int = (1 << LC_MEASUREMENT);
+pub const LC_IDENTIFICATION_MASK: ::c_int = (1 << LC_IDENTIFICATION);
+pub const LC_ALL_MASK: ::c_int = ::LC_CTYPE_MASK
+                               | ::LC_NUMERIC_MASK
+                               | ::LC_TIME_MASK
+                               | ::LC_COLLATE_MASK
+                               | ::LC_MONETARY_MASK
+                               | ::LC_MESSAGES_MASK
+                               | LC_PAPER_MASK
+                               | LC_NAME_MASK
+                               | LC_ADDRESS_MASK
+                               | LC_TELEPHONE_MASK
+                               | LC_MEASUREMENT_MASK
+                               | LC_IDENTIFICATION_MASK;
 
 pub const MAP_ANON: ::c_int = 0x0020;
 pub const MAP_ANONYMOUS: ::c_int = 0x0020;
diff --git a/src/unix/notbsd/mod.rs b/src/unix/notbsd/mod.rs
index c2405e3d1b7b62e8340ea39ee37d8ace427fe6ec..9914c0bb0ac54b439e2295e2a5a711207814cba0 100644
--- a/src/unix/notbsd/mod.rs
+++ b/src/unix/notbsd/mod.rs
@@ -291,6 +291,13 @@ pub const LC_COLLATE: ::c_int = 3;
 pub const LC_MONETARY: ::c_int = 4;
 pub const LC_MESSAGES: ::c_int = 5;
 pub const LC_ALL: ::c_int = 6;
+pub const LC_CTYPE_MASK: ::c_int = (1 << LC_CTYPE);
+pub const LC_NUMERIC_MASK: ::c_int = (1 << LC_NUMERIC);
+pub const LC_TIME_MASK: ::c_int = (1 << LC_TIME);
+pub const LC_COLLATE_MASK: ::c_int = (1 << LC_COLLATE);
+pub const LC_MONETARY_MASK: ::c_int = (1 << LC_MONETARY);
+pub const LC_MESSAGES_MASK: ::c_int = (1 << LC_MESSAGES);
+// LC_ALL_MASK defined per platform
 
 pub const MAP_FILE: ::c_int = 0x0000;
 pub const MAP_SHARED: ::c_int = 0x0001;
@@ -749,6 +756,12 @@ extern {
     pub fn futimens(fd: ::c_int, times: *const ::timespec) -> ::c_int;
     pub fn utimensat(dirfd: ::c_int, path: *const ::c_char,
                      times: *const ::timespec, flag: ::c_int) -> ::c_int;
+    pub fn duplocale(base: ::locale_t) -> ::locale_t;
+    pub fn freelocale(loc: ::locale_t);
+    pub fn newlocale(mask: ::c_int,
+                     locale: *const ::c_char,
+                     base: ::locale_t) -> ::locale_t;
+    pub fn uselocale(loc: ::locale_t) -> ::locale_t;
 }
 
 cfg_if! {
diff --git a/src/unix/solaris/mod.rs b/src/unix/solaris/mod.rs
index a47d1baaaab1be81fc0d6c20c207d4bbadfc2a34..e91caaf4e05337ab8614e97f6d1c166583eec348 100644
--- a/src/unix/solaris/mod.rs
+++ b/src/unix/solaris/mod.rs
@@ -31,6 +31,7 @@ pub type pthread_t = ::uintptr_t;
 pub type pthread_key_t = ::c_uint;
 pub type blksize_t = u32;
 pub type fflags_t = u32;
+pub type nl_item = ::c_int;
 
 pub enum timezone {}
 
@@ -272,8 +273,121 @@ s! {
         pub c_lflag: ::tcflag_t,
         pub c_cc: [::cc_t; ::NCCS]
     }
+
+    pub struct lconv {
+        pub decimal_point: *mut ::c_char,
+        pub thousands_sep: *mut ::c_char,
+        pub grouping: *mut ::c_char,
+        pub int_curr_symbol: *mut ::c_char,
+        pub currency_symbol: *mut ::c_char,
+        pub mon_decimal_point: *mut ::c_char,
+        pub mon_thousands_sep: *mut ::c_char,
+        pub mon_grouping: *mut ::c_char,
+        pub positive_sign: *mut ::c_char,
+        pub negative_sign: *mut ::c_char,
+        pub int_frac_digits: ::c_char,
+        pub frac_digits: ::c_char,
+        pub p_cs_precedes: ::c_char,
+        pub p_sep_by_space: ::c_char,
+        pub n_cs_precedes: ::c_char,
+        pub n_sep_by_space: ::c_char,
+        pub p_sign_posn: ::c_char,
+        pub n_sign_posn: ::c_char,
+        pub int_p_cs_precedes: ::c_char,
+        pub int_p_sep_by_space: ::c_char,
+        pub int_n_cs_precedes: ::c_char,
+        pub int_n_sep_by_space: ::c_char,
+        pub int_p_sign_posn: ::c_char,
+        pub int_n_sign_posn: ::c_char,
+    }
 }
 
+pub const LC_CTYPE: ::c_int = 0;
+pub const LC_NUMERIC: ::c_int = 1;
+pub const LC_TIME: ::c_int = 2;
+pub const LC_COLLATE: ::c_int = 3;
+pub const LC_MONETARY: ::c_int = 4;
+pub const LC_MESSAGES: ::c_int = 5;
+pub const LC_ALL: ::c_int = 6;
+pub const LC_CTYPE_MASK: ::c_int = (1 << LC_CTYPE);
+pub const LC_NUMERIC_MASK: ::c_int = (1 << LC_NUMERIC);
+pub const LC_TIME_MASK: ::c_int = (1 << LC_TIME);
+pub const LC_COLLATE_MASK: ::c_int = (1 << LC_COLLATE);
+pub const LC_MONETARY_MASK: ::c_int = (1 << LC_MONETARY);
+pub const LC_MESSAGES_MASK: ::c_int = (1 << LC_MESSAGES);
+pub const LC_ALL_MASK: ::c_int = LC_CTYPE_MASK
+                               | LC_NUMERIC_MASK
+                               | LC_TIME_MASK
+                               | LC_COLLATE_MASK
+                               | LC_MONETARY_MASK
+                               | LC_MESSAGES_MASK;
+
+pub const DAY_1: ::nl_item = 1;
+pub const DAY_2: ::nl_item = 2;
+pub const DAY_3: ::nl_item = 3;
+pub const DAY_4: ::nl_item = 4;
+pub const DAY_5: ::nl_item = 5;
+pub const DAY_6: ::nl_item = 6;
+pub const DAY_7: ::nl_item = 7;
+
+pub const ABDAY_1: ::nl_item = 8;
+pub const ABDAY_2: ::nl_item = 9;
+pub const ABDAY_3: ::nl_item = 10;
+pub const ABDAY_4: ::nl_item = 11;
+pub const ABDAY_5: ::nl_item = 12;
+pub const ABDAY_6: ::nl_item = 13;
+pub const ABDAY_7: ::nl_item = 14;
+
+pub const MON_1: ::nl_item = 15;
+pub const MON_2: ::nl_item = 16;
+pub const MON_3: ::nl_item = 17;
+pub const MON_4: ::nl_item = 18;
+pub const MON_5: ::nl_item = 19;
+pub const MON_6: ::nl_item = 20;
+pub const MON_7: ::nl_item = 21;
+pub const MON_8: ::nl_item = 22;
+pub const MON_9: ::nl_item = 23;
+pub const MON_10: ::nl_item = 24;
+pub const MON_11: ::nl_item = 25;
+pub const MON_12: ::nl_item = 26;
+
+pub const ABMON_1: ::nl_item = 27;
+pub const ABMON_2: ::nl_item = 28;
+pub const ABMON_3: ::nl_item = 29;
+pub const ABMON_4: ::nl_item = 30;
+pub const ABMON_5: ::nl_item = 31;
+pub const ABMON_6: ::nl_item = 32;
+pub const ABMON_7: ::nl_item = 33;
+pub const ABMON_8: ::nl_item = 34;
+pub const ABMON_9: ::nl_item = 35;
+pub const ABMON_10: ::nl_item = 36;
+pub const ABMON_11: ::nl_item = 37;
+pub const ABMON_12: ::nl_item = 38;
+
+pub const RADIXCHAR: ::nl_item = 39;
+pub const THOUSEP: ::nl_item = 40;
+pub const YESSTR: ::nl_item = 41;
+pub const NOSTR: ::nl_item = 42;
+pub const CRNCYSTR: ::nl_item = 43;
+
+pub const D_T_FMT: ::nl_item = 44;
+pub const D_FMT: ::nl_item = 45;
+pub const T_FMT: ::nl_item = 46;
+pub const AM_STR: ::nl_item = 47;
+pub const PM_STR: ::nl_item = 48;
+
+pub const CODESET: ::nl_item = 49;
+pub const T_FMT_AMPM: ::nl_item = 50;
+pub const ERA: ::nl_item = 51;
+pub const ERA_D_FMT: ::nl_item = 52;
+pub const ERA_D_T_FMT: ::nl_item = 53;
+pub const ERA_T_FMT: ::nl_item = 54;
+pub const ALT_DIGITS: ::nl_item = 55;
+pub const YESEXPR: ::nl_item = 56;
+pub const NOEXPR: ::nl_item = 57;
+pub const _DATE_FMT: ::nl_item = 58;
+pub const MAXSTRMSG: ::nl_item = 58;
+
 pub const SA_ONSTACK: ::c_int = 0x00000001;
 pub const SA_RESETHAND: ::c_int = 0x00000002;
 pub const SA_RESTART: ::c_int = 0x00000004;
@@ -778,5 +892,12 @@ extern {
                       buflen: ::size_t) -> *const passwd;
     pub fn readdir(dirp: *mut ::DIR) -> *const ::dirent;
     pub fn fdatasync(fd: ::c_int) -> ::c_int;
+    pub fn nl_langinfo_l(item: ::nl_item, locale: ::locale_t) -> *mut ::c_char;
+    pub fn duplocale(base: ::locale_t) -> ::locale_t;
+    pub fn freelocale(loc: ::locale_t);
+    pub fn newlocale(mask: ::c_int,
+                     locale: *const ::c_char,
+                     base: ::locale_t) -> ::locale_t;
+    pub fn uselocale(loc: ::locale_t) -> ::locale_t;
 }