diff --git a/src/libstd/libc.rs b/src/libstd/libc.rs
index 2aaeda69326b6..9d6755fc22d32 100644
--- a/src/libstd/libc.rs
+++ b/src/libstd/libc.rs
@@ -1176,6 +1176,63 @@ pub mod consts {
             pub static MS_ASYNC : int = 0x0001;
             pub static MS_INVALIDATE : int = 0x0002;
             pub static MS_SYNC : int = 0x0004;
+
+            pub static _SC_ARG_MAX : int = 0;
+            pub static _SC_CHILD_MAX : int = 1;
+            pub static _SC_CLK_TCK : int = 2;
+            pub static _SC_NGROUPS_MAX : int = 3;
+            pub static _SC_OPEN_MAX : int = 4;
+            pub static _SC_STREAM_MAX : int = 5;
+            pub static _SC_TZNAME_MAX : int = 6;
+            pub static _SC_JOB_CONTROL : int = 7;
+            pub static _SC_SAVED_IDS : int = 8;
+            pub static _SC_REALTIME_SIGNALS : int = 9;
+            pub static _SC_PRIORITY_SCHEDULING : int = 10;
+            pub static _SC_TIMERS : int = 11;
+            pub static _SC_ASYNCHRONOUS_IO : int = 12;
+            pub static _SC_PRIORITIZED_IO : int = 13;
+            pub static _SC_SYNCHRONIZED_IO : int = 14;
+            pub static _SC_FSYNC : int = 15;
+            pub static _SC_MAPPED_FILES : int = 16;
+            pub static _SC_MEMLOCK : int = 17;
+            pub static _SC_MEMLOCK_RANGE : int = 18;
+            pub static _SC_MEMORY_PROTECTION : int = 19;
+            pub static _SC_MESSAGE_PASSING : int = 20;
+            pub static _SC_SEMAPHORES : int = 21;
+            pub static _SC_SHARED_MEMORY_OBJECTS : int = 22;
+            pub static _SC_AIO_LISTIO_MAX : int = 23;
+            pub static _SC_AIO_MAX : int = 24;
+            pub static _SC_AIO_PRIO_DELTA_MAX : int = 25;
+            pub static _SC_DELAYTIMER_MAX : int = 26;
+            pub static _SC_MQ_OPEN_MAX : int = 27;
+            pub static _SC_VERSION : int = 29;
+            pub static _SC_PAGESIZE : int = 30;
+            pub static _SC_RTSIG_MAX : int = 31;
+            pub static _SC_SEM_NSEMS_MAX : int = 32;
+            pub static _SC_SEM_VALUE_MAX : int = 33;
+            pub static _SC_SIGQUEUE_MAX : int = 34;
+            pub static _SC_TIMER_MAX : int = 35;
+            pub static _SC_BC_BASE_MAX : int = 36;
+            pub static _SC_BC_DIM_MAX : int = 37;
+            pub static _SC_BC_SCALE_MAX : int = 38;
+            pub static _SC_BC_STRING_MAX : int = 39;
+            pub static _SC_COLL_WEIGHTS_MAX : int = 40;
+            pub static _SC_EXPR_NEST_MAX : int = 42;
+            pub static _SC_LINE_MAX : int = 43;
+            pub static _SC_RE_DUP_MAX : int = 44;
+            pub static _SC_2_VERSION : int = 46;
+            pub static _SC_2_C_BIND : int = 47;
+            pub static _SC_2_C_DEV : int = 48;
+            pub static _SC_2_FORT_DEV : int = 49;
+            pub static _SC_2_FORT_RUN : int = 50;
+            pub static _SC_2_SW_DEV : int = 51;
+            pub static _SC_2_LOCALEDEF : int = 52;
+            pub static _SC_2_CHAR_TERM : int = 95;
+            pub static _SC_2_C_VERSION : int = 96;
+            pub static _SC_2_UPE : int = 97;
+            pub static _SC_XBS5_ILP32_OFF32 : int = 125;
+            pub static _SC_XBS5_ILP32_OFFBIG : int = 126;
+            pub static _SC_XBS5_LPBIG_OFFBIG : int = 128;
         }
         pub mod posix01 {
             pub static SIGTRAP : int = 5;
@@ -1197,6 +1254,35 @@ pub mod consts {
             pub static POSIX_MADV_SEQUENTIAL : int = 2;
             pub static POSIX_MADV_WILLNEED : int = 3;
             pub static POSIX_MADV_DONTNEED : int = 4;
+
+            pub static _SC_MQ_PRIO_MAX : int = 28;
+            pub static _SC_IOV_MAX : int = 60;
+            pub static _SC_GETGR_R_SIZE_MAX : int = 69;
+            pub static _SC_GETPW_R_SIZE_MAX : int = 70;
+            pub static _SC_LOGIN_NAME_MAX : int = 71;
+            pub static _SC_TTY_NAME_MAX : int = 72;
+            pub static _SC_THREADS : int = 67;
+            pub static _SC_THREAD_SAFE_FUNCTIONS : int = 68;
+            pub static _SC_THREAD_DESTRUCTOR_ITERATIONS : int = 73;
+            pub static _SC_THREAD_KEYS_MAX : int = 74;
+            pub static _SC_THREAD_STACK_MIN : int = 75;
+            pub static _SC_THREAD_THREADS_MAX : int = 76;
+            pub static _SC_THREAD_ATTR_STACKADDR : int = 77;
+            pub static _SC_THREAD_ATTR_STACKSIZE : int = 78;
+            pub static _SC_THREAD_PRIORITY_SCHEDULING : int = 79;
+            pub static _SC_THREAD_PRIO_INHERIT : int = 80;
+            pub static _SC_THREAD_PRIO_PROTECT : int = 81;
+            pub static _SC_THREAD_PROCESS_SHARED : int = 82;
+            pub static _SC_ATEXIT_MAX : int = 87;
+            pub static _SC_XOPEN_VERSION : int = 89;
+            pub static _SC_XOPEN_XCU_VERSION : int = 90;
+            pub static _SC_XOPEN_UNIX : int = 91;
+            pub static _SC_XOPEN_CRYPT : int = 92;
+            pub static _SC_XOPEN_ENH_I18N : int = 93;
+            pub static _SC_XOPEN_SHM : int = 94;
+            pub static _SC_XOPEN_LEGACY : int = 129;
+            pub static _SC_XOPEN_REALTIME : int = 130;
+            pub static _SC_XOPEN_REALTIME_THREADS : int = 131;
         }
         pub mod posix08 {
         }
@@ -1345,6 +1431,59 @@ pub mod consts {
             pub static MS_SYNC : int = 0x0000;
             pub static MS_ASYNC : int = 0x0001;
             pub static MS_INVALIDATE : int = 0x0002;
+
+            pub static _SC_ARG_MAX : int = 1;
+            pub static _SC_CHILD_MAX : int = 2;
+            pub static _SC_CLK_TCK : int = 3;
+            pub static _SC_NGROUPS_MAX : int = 4;
+            pub static _SC_OPEN_MAX : int = 5;
+            pub static _SC_JOB_CONTROL : int = 6;
+            pub static _SC_SAVED_IDS : int = 7;
+            pub static _SC_VERSION : int = 8;
+            pub static _SC_BC_BASE_MAX : int = 9;
+            pub static _SC_BC_DIM_MAX : int = 10;
+            pub static _SC_BC_SCALE_MAX : int = 11;
+            pub static _SC_BC_STRING_MAX : int = 12;
+            pub static _SC_COLL_WEIGHTS_MAX : int = 13;
+            pub static _SC_EXPR_NEST_MAX : int = 14;
+            pub static _SC_LINE_MAX : int = 15;
+            pub static _SC_RE_DUP_MAX : int = 16;
+            pub static _SC_2_VERSION : int = 17;
+            pub static _SC_2_C_BIND : int = 18;
+            pub static _SC_2_C_DEV : int = 19;
+            pub static _SC_2_CHAR_TERM : int = 20;
+            pub static _SC_2_FORT_DEV : int = 21;
+            pub static _SC_2_FORT_RUN : int = 22;
+            pub static _SC_2_LOCALEDEF : int = 23;
+            pub static _SC_2_SW_DEV : int = 24;
+            pub static _SC_2_UPE : int = 25;
+            pub static _SC_STREAM_MAX : int = 26;
+            pub static _SC_TZNAME_MAX : int = 27;
+            pub static _SC_ASYNCHRONOUS_IO : int = 28;
+            pub static _SC_MAPPED_FILES : int = 29;
+            pub static _SC_MEMLOCK : int = 30;
+            pub static _SC_MEMLOCK_RANGE : int = 31;
+            pub static _SC_MEMORY_PROTECTION : int = 32;
+            pub static _SC_MESSAGE_PASSING : int = 33;
+            pub static _SC_PRIORITIZED_IO : int = 34;
+            pub static _SC_PRIORITY_SCHEDULING : int = 35;
+            pub static _SC_REALTIME_SIGNALS : int = 36;
+            pub static _SC_SEMAPHORES : int = 37;
+            pub static _SC_FSYNC : int = 38;
+            pub static _SC_SHARED_MEMORY_OBJECTS : int = 39;
+            pub static _SC_SYNCHRONIZED_IO : int = 40;
+            pub static _SC_TIMERS : int = 41;
+            pub static _SC_AIO_LISTIO_MAX : int = 42;
+            pub static _SC_AIO_MAX : int = 43;
+            pub static _SC_AIO_PRIO_DELTA_MAX : int = 44;
+            pub static _SC_DELAYTIMER_MAX : int = 45;
+            pub static _SC_MQ_OPEN_MAX : int = 46;
+            pub static _SC_PAGESIZE : int = 47;
+            pub static _SC_RTSIG_MAX : int = 48;
+            pub static _SC_SEM_NSEMS_MAX : int = 49;
+            pub static _SC_SEM_VALUE_MAX : int = 50;
+            pub static _SC_SIGQUEUE_MAX : int = 51;
+            pub static _SC_TIMER_MAX : int = 52;
         }
         pub mod posix01 {
             pub static SIGTRAP : int = 5;
@@ -1366,6 +1505,35 @@ pub mod consts {
             pub static POSIX_MADV_SEQUENTIAL : int = 2;
             pub static POSIX_MADV_WILLNEED : int = 3;
             pub static POSIX_MADV_DONTNEED : int = 4;
+
+            pub static _SC_IOV_MAX : int = 56;
+            pub static _SC_GETGR_R_SIZE_MAX : int = 70;
+            pub static _SC_GETPW_R_SIZE_MAX : int = 71;
+            pub static _SC_LOGIN_NAME_MAX : int = 73;
+            pub static _SC_MQ_PRIO_MAX : int = 75;
+            pub static _SC_THREAD_ATTR_STACKADDR : int = 82;
+            pub static _SC_THREAD_ATTR_STACKSIZE : int = 83;
+            pub static _SC_THREAD_DESTRUCTOR_ITERATIONS : int = 85;
+            pub static _SC_THREAD_KEYS_MAX : int = 86;
+            pub static _SC_THREAD_PRIO_INHERIT : int = 87;
+            pub static _SC_THREAD_PRIO_PROTECT : int = 88;
+            pub static _SC_THREAD_PRIORITY_SCHEDULING : int = 89;
+            pub static _SC_THREAD_PROCESS_SHARED : int = 90;
+            pub static _SC_THREAD_SAFE_FUNCTIONS : int = 91;
+            pub static _SC_THREAD_STACK_MIN : int = 93;
+            pub static _SC_THREAD_THREADS_MAX : int = 94;
+            pub static _SC_THREADS : int = 96;
+            pub static _SC_TTY_NAME_MAX : int = 101;
+            pub static _SC_ATEXIT_MAX : int = 107;
+            pub static _SC_XOPEN_CRYPT : int = 108;
+            pub static _SC_XOPEN_ENH_I18N : int = 109;
+            pub static _SC_XOPEN_LEGACY : int = 110;
+            pub static _SC_XOPEN_REALTIME : int = 111;
+            pub static _SC_XOPEN_REALTIME_THREADS : int = 112;
+            pub static _SC_XOPEN_SHM : int = 113;
+            pub static _SC_XOPEN_UNIX : int = 115;
+            pub static _SC_XOPEN_VERSION : int = 116;
+            pub static _SC_XOPEN_XCU_VERSION : int = 117;
         }
         pub mod posix08 {
         }
@@ -1494,6 +1662,63 @@ pub mod consts {
 
             pub static MS_KILLPAGES : int = 0x0004;
             pub static MS_DEACTIVATE : int = 0x0008;
+
+            pub static _SC_ARG_MAX : int = 1;
+            pub static _SC_CHILD_MAX : int = 2;
+            pub static _SC_CLK_TCK : int = 3;
+            pub static _SC_NGROUPS_MAX : int = 4;
+            pub static _SC_OPEN_MAX : int = 5;
+            pub static _SC_JOB_CONTROL : int = 6;
+            pub static _SC_SAVED_IDS : int = 7;
+            pub static _SC_VERSION : int = 8;
+            pub static _SC_BC_BASE_MAX : int = 9;
+            pub static _SC_BC_DIM_MAX : int = 10;
+            pub static _SC_BC_SCALE_MAX : int = 11;
+            pub static _SC_BC_STRING_MAX : int = 12;
+            pub static _SC_COLL_WEIGHTS_MAX : int = 13;
+            pub static _SC_EXPR_NEST_MAX : int = 14;
+            pub static _SC_LINE_MAX : int = 15;
+            pub static _SC_RE_DUP_MAX : int = 16;
+            pub static _SC_2_VERSION : int = 17;
+            pub static _SC_2_C_BIND : int = 18;
+            pub static _SC_2_C_DEV : int = 19;
+            pub static _SC_2_CHAR_TERM : int = 20;
+            pub static _SC_2_FORT_DEV : int = 21;
+            pub static _SC_2_FORT_RUN : int = 22;
+            pub static _SC_2_LOCALEDEF : int = 23;
+            pub static _SC_2_SW_DEV : int = 24;
+            pub static _SC_2_UPE : int = 25;
+            pub static _SC_STREAM_MAX : int = 26;
+            pub static _SC_TZNAME_MAX : int = 27;
+            pub static _SC_ASYNCHRONOUS_IO : int = 28;
+            pub static _SC_PAGESIZE : int = 29;
+            pub static _SC_MEMLOCK : int = 30;
+            pub static _SC_MEMLOCK_RANGE : int = 31;
+            pub static _SC_MEMORY_PROTECTION : int = 32;
+            pub static _SC_MESSAGE_PASSING : int = 33;
+            pub static _SC_PRIORITIZED_IO : int = 34;
+            pub static _SC_PRIORITY_SCHEDULING : int = 35;
+            pub static _SC_REALTIME_SIGNALS : int = 36;
+            pub static _SC_SEMAPHORES : int = 37;
+            pub static _SC_FSYNC : int = 38;
+            pub static _SC_SHARED_MEMORY_OBJECTS : int = 39;
+            pub static _SC_SYNCHRONIZED_IO : int = 40;
+            pub static _SC_TIMERS : int = 41;
+            pub static _SC_AIO_LISTIO_MAX : int = 42;
+            pub static _SC_AIO_MAX : int = 43;
+            pub static _SC_AIO_PRIO_DELTA_MAX : int = 44;
+            pub static _SC_DELAYTIMER_MAX : int = 45;
+            pub static _SC_MQ_OPEN_MAX : int = 46;
+            pub static _SC_MAPPED_FILES : int = 47;
+            pub static _SC_RTSIG_MAX : int = 48;
+            pub static _SC_SEM_NSEMS_MAX : int = 49;
+            pub static _SC_SEM_VALUE_MAX : int = 50;
+            pub static _SC_SIGQUEUE_MAX : int = 51;
+            pub static _SC_TIMER_MAX : int = 52;
+            pub static _SC_XBS5_ILP32_OFF32 : int = 122;
+            pub static _SC_XBS5_ILP32_OFFBIG : int = 123;
+            pub static _SC_XBS5_LP64_OFF64 : int = 124;
+            pub static _SC_XBS5_LPBIG_OFFBIG : int = 125;
         }
         pub mod posix01 {
             pub static SIGTRAP : int = 5;
@@ -1515,6 +1740,35 @@ pub mod consts {
             pub static POSIX_MADV_SEQUENTIAL : int = 2;
             pub static POSIX_MADV_WILLNEED : int = 3;
             pub static POSIX_MADV_DONTNEED : int = 4;
+
+            pub static _SC_IOV_MAX : int = 56;
+            pub static _SC_GETGR_R_SIZE_MAX : int = 70;
+            pub static _SC_GETPW_R_SIZE_MAX : int = 71;
+            pub static _SC_LOGIN_NAME_MAX : int = 73;
+            pub static _SC_MQ_PRIO_MAX : int = 75;
+            pub static _SC_THREAD_ATTR_STACKADDR : int = 82;
+            pub static _SC_THREAD_ATTR_STACKSIZE : int = 83;
+            pub static _SC_THREAD_DESTRUCTOR_ITERATIONS : int = 85;
+            pub static _SC_THREAD_KEYS_MAX : int = 86;
+            pub static _SC_THREAD_PRIO_INHERIT : int = 87;
+            pub static _SC_THREAD_PRIO_PROTECT : int = 88;
+            pub static _SC_THREAD_PRIORITY_SCHEDULING : int = 89;
+            pub static _SC_THREAD_PROCESS_SHARED : int = 90;
+            pub static _SC_THREAD_SAFE_FUNCTIONS : int = 91;
+            pub static _SC_THREAD_STACK_MIN : int = 93;
+            pub static _SC_THREAD_THREADS_MAX : int = 94;
+            pub static _SC_THREADS : int = 96;
+            pub static _SC_TTY_NAME_MAX : int = 101;
+            pub static _SC_ATEXIT_MAX : int = 107;
+            pub static _SC_XOPEN_CRYPT : int = 108;
+            pub static _SC_XOPEN_ENH_I18N : int = 109;
+            pub static _SC_XOPEN_LEGACY : int = 110;
+            pub static _SC_XOPEN_REALTIME : int = 111;
+            pub static _SC_XOPEN_REALTIME_THREADS : int = 112;
+            pub static _SC_XOPEN_SHM : int = 113;
+            pub static _SC_XOPEN_UNIX : int = 115;
+            pub static _SC_XOPEN_VERSION : int = 116;
+            pub static _SC_XOPEN_XCU_VERSION : int = 121;
         }
         pub mod posix08 {
         }