diff --git a/ndk/platforms/android-21/arch-arm/symbols/libc.so.functions.txt b/ndk/platforms/android-21/arch-arm/symbols/libc.so.functions.txt
index 578a08072..25d1a938a 100644
--- a/ndk/platforms/android-21/arch-arm/symbols/libc.so.functions.txt
+++ b/ndk/platforms/android-21/arch-arm/symbols/libc.so.functions.txt
@@ -1,99 +1,7 @@
-SHA1Final
-SHA1Init
-SHA1Transform
-SHA1Update
 _Exit
-_Unwind_Backtrace
-_Unwind_Complete
-_Unwind_DeleteException
-_Unwind_ForcedUnwind
-_Unwind_GetCFA
-_Unwind_GetDataRelBase
-_Unwind_GetLanguageSpecificData
-_Unwind_GetRegionStart
-_Unwind_GetTextRelBase
-_Unwind_RaiseException
-_Unwind_Resume
-_Unwind_Resume_or_Rethrow
-_Unwind_VRS_Get
-_Unwind_VRS_Pop
-_Unwind_VRS_Set
-_Z16__libc_init_vdsov
 __FD_CLR_chk
 __FD_ISSET_chk
 __FD_SET_chk
-___Unwind_Backtrace
-___Unwind_ForcedUnwind
-___Unwind_RaiseException
-___Unwind_Resume
-___Unwind_Resume_or_Rethrow
-__accept4
-__adddf3
-__addsf3
-__aeabi_atexit
-__aeabi_cdcmpeq
-__aeabi_cdcmple
-__aeabi_cdrcmple
-__aeabi_d2f
-__aeabi_d2iz
-__aeabi_dadd
-__aeabi_dcmpeq
-__aeabi_dcmpge
-__aeabi_dcmpgt
-__aeabi_dcmple
-__aeabi_dcmplt
-__aeabi_dcmpun
-__aeabi_ddiv
-__aeabi_dmul
-__aeabi_drsub
-__aeabi_dsub
-__aeabi_f2d
-__aeabi_f2iz
-__aeabi_f2uiz
-__aeabi_fadd
-__aeabi_fcmpun
-__aeabi_fdiv
-__aeabi_fmul
-__aeabi_frsub
-__aeabi_fsub
-__aeabi_i2d
-__aeabi_i2f
-__aeabi_idiv
-__aeabi_idiv0
-__aeabi_idivmod
-__aeabi_l2d
-__aeabi_l2f
-__aeabi_lasr
-__aeabi_ldiv0
-__aeabi_ldivmod
-__aeabi_llsl
-__aeabi_llsr
-__aeabi_lmul
-__aeabi_memclr
-__aeabi_memclr4
-__aeabi_memclr8
-__aeabi_memcpy
-__aeabi_memcpy4
-__aeabi_memcpy8
-__aeabi_memmove
-__aeabi_memmove4
-__aeabi_memmove8
-__aeabi_memset
-__aeabi_memset4
-__aeabi_memset8
-__aeabi_ui2d
-__aeabi_ui2f
-__aeabi_uidiv
-__aeabi_uidivmod
-__aeabi_ul2d
-__aeabi_ul2f
-__aeabi_uldivmod
-__aeabi_unwind_cpp_pr0
-__aeabi_unwind_cpp_pr1
-__aeabi_unwind_cpp_pr2
-__arm_fadvise64_64
-__ashldi3
-__ashrdi3
 __assert
 __assert2
 __atomic_cmpxchg
@@ -107,7 +15,6 @@ __cmpdf2
 __cmsg_nxthdr
 __connect
 __ctype_get_mb_cur_max
-__cxa_atexit
 __cxa_finalize
 __divdf3
 __divdi3
@@ -152,26 +59,8 @@ __getcwd
 __getdents64
 __getpid
 __getpriority
-__gnu_Unwind_Backtrace
-__gnu_Unwind_Find_exidx
-__gnu_Unwind_ForcedUnwind
-__gnu_Unwind_RaiseException
-__gnu_Unwind_Restore_VFP
-__gnu_Unwind_Restore_VFP_D
-__gnu_Unwind_Restore_VFP_D_16_to_31
-__gnu_Unwind_Restore_WMMXC
-__gnu_Unwind_Restore_WMMXD
-__gnu_Unwind_Resume
-__gnu_Unwind_Resume_or_Rethrow
-__gnu_Unwind_Save_VFP
-__gnu_Unwind_Save_VFP_D
-__gnu_Unwind_Save_VFP_D_16_to_31
-__gnu_Unwind_Save_WMMXC
-__gnu_Unwind_Save_WMMXD
 __gnu_ldivmod_helper
 __gnu_uldivmod_helper
-__gnu_unwind_execute
-__gnu_unwind_frame
 __gtdf2
 __hostalias
 __ioctl
@@ -355,7 +244,6 @@ asctime64_r
 asctime_r
 asprintf
 at_quick_exit
-atexit
 atof
 atoi
 atol
@@ -411,7 +299,6 @@ dirfd
 dirname
 dirname_r
 div
-dlmalloc_usable_size
 dn_expand
 dprintf
 drand48
diff --git a/ndk/platforms/android-21/arch-arm/symbols/libc.so.variables.txt b/ndk/platforms/android-21/arch-arm/symbols/libc.so.variables.txt
index 1c2a0740d..5fa9d800d 100644
--- a/ndk/platforms/android-21/arch-arm/symbols/libc.so.variables.txt
+++ b/ndk/platforms/android-21/arch-arm/symbols/libc.so.variables.txt
@@ -1,6 +1,3 @@
-__bionic_brk
-__bionic_libgcc_compat_symbols
-__dso_handle
 __isthreaded
 __p_class_syms
 __p_type_syms
diff --git a/ndk/platforms/android-21/arch-arm64/symbols/libc.so.functions.txt b/ndk/platforms/android-21/arch-arm64/symbols/libc.so.functions.txt
index 7dddb2a4a..35dc9b1ad 100644
--- a/ndk/platforms/android-21/arch-arm64/symbols/libc.so.functions.txt
+++ b/ndk/platforms/android-21/arch-arm64/symbols/libc.so.functions.txt
@@ -1,5 +1,4 @@
 _Exit
-_Z16__libc_init_vdsov
 __FD_CLR_chk
 __FD_ISSET_chk
 __FD_SET_chk
@@ -9,7 +8,6 @@ __b64_ntop
 __b64_pton
 __cmsg_nxthdr
 __ctype_get_mb_cur_max
-__cxa_atexit
 __cxa_finalize
 __dn_comp
 __dn_count_labels
diff --git a/ndk/platforms/android-21/arch-mips/symbols/libc.so.functions.txt b/ndk/platforms/android-21/arch-mips/symbols/libc.so.functions.txt
index 829f8d1e4..382e5b649 100644
--- a/ndk/platforms/android-21/arch-mips/symbols/libc.so.functions.txt
+++ b/ndk/platforms/android-21/arch-mips/symbols/libc.so.functions.txt
@@ -1,13 +1,7 @@
-SHA1Final
-SHA1Init
-SHA1Transform
-SHA1Update
 _Exit
-_Z16__libc_init_vdsov
 __FD_CLR_chk
 __FD_ISSET_chk
 __FD_SET_chk
-__accept4
 __assert
 __assert2
 __b64_ntop
@@ -16,7 +10,6 @@ __brk
 __cmsg_nxthdr
 __connect
 __ctype_get_mb_cur_max
-__cxa_atexit
 __cxa_finalize
 __divdi3
 __dn_comp
@@ -273,7 +266,6 @@ dirfd
 dirname
 dirname_r
 div
-dlmalloc_usable_size
 dn_expand
 dprintf
 drand48
diff --git a/ndk/platforms/android-21/arch-mips/symbols/libc.so.variables.txt b/ndk/platforms/android-21/arch-mips/symbols/libc.so.variables.txt
index 3b462b6b2..224980e67 100644
--- a/ndk/platforms/android-21/arch-mips/symbols/libc.so.variables.txt
+++ b/ndk/platforms/android-21/arch-mips/symbols/libc.so.variables.txt
@@ -1,4 +1,3 @@
-__bionic_brk
 __isthreaded
 __p_class_syms
 __p_type_syms
diff --git a/ndk/platforms/android-21/arch-mips64/symbols/libc.so.functions.txt b/ndk/platforms/android-21/arch-mips64/symbols/libc.so.functions.txt
index 7dddb2a4a..35dc9b1ad 100644
--- a/ndk/platforms/android-21/arch-mips64/symbols/libc.so.functions.txt
+++ b/ndk/platforms/android-21/arch-mips64/symbols/libc.so.functions.txt
@@ -1,5 +1,4 @@
 _Exit
-_Z16__libc_init_vdsov
 __FD_CLR_chk
 __FD_ISSET_chk
 __FD_SET_chk
@@ -9,7 +8,6 @@ __b64_ntop
 __b64_pton
 __cmsg_nxthdr
 __ctype_get_mb_cur_max
-__cxa_atexit
 __cxa_finalize
 __dn_comp
 __dn_count_labels
diff --git a/ndk/platforms/android-21/arch-x86/symbols/libc.so.functions.txt b/ndk/platforms/android-21/arch-x86/symbols/libc.so.functions.txt
index cf05fd4d7..be7220e6c 100644
--- a/ndk/platforms/android-21/arch-x86/symbols/libc.so.functions.txt
+++ b/ndk/platforms/android-21/arch-x86/symbols/libc.so.functions.txt
@@ -1,13 +1,7 @@
-SHA1Final
-SHA1Init
-SHA1Transform
-SHA1Update
 _Exit
-_Z16__libc_init_vdsov
 __FD_CLR_chk
 __FD_ISSET_chk
 __FD_SET_chk
-__accept4
 __assert
 __assert2
 __b64_ntop
@@ -16,7 +10,6 @@ __brk
 __cmsg_nxthdr
 __connect
 __ctype_get_mb_cur_max
-__cxa_atexit
 __cxa_finalize
 __divdi3
 __dn_comp
@@ -269,7 +262,6 @@ dirfd
 dirname
 dirname_r
 div
-dlmalloc_usable_size
 dn_expand
 dprintf
 drand48
diff --git a/ndk/platforms/android-21/arch-x86/symbols/libc.so.variables.txt b/ndk/platforms/android-21/arch-x86/symbols/libc.so.variables.txt
index fecf385c4..5fa9d800d 100644
--- a/ndk/platforms/android-21/arch-x86/symbols/libc.so.variables.txt
+++ b/ndk/platforms/android-21/arch-x86/symbols/libc.so.variables.txt
@@ -1,4 +1,3 @@
-__bionic_brk
 __isthreaded
 __p_class_syms
 __p_type_syms
diff --git a/ndk/platforms/android-21/arch-x86_64/symbols/libc.so.functions.txt b/ndk/platforms/android-21/arch-x86_64/symbols/libc.so.functions.txt
index 7dddb2a4a..35dc9b1ad 100644
--- a/ndk/platforms/android-21/arch-x86_64/symbols/libc.so.functions.txt
+++ b/ndk/platforms/android-21/arch-x86_64/symbols/libc.so.functions.txt
@@ -1,5 +1,4 @@
 _Exit
-_Z16__libc_init_vdsov
 __FD_CLR_chk
 __FD_ISSET_chk
 __FD_SET_chk
@@ -9,7 +8,6 @@ __b64_ntop
 __b64_pton
 __cmsg_nxthdr
 __ctype_get_mb_cur_max
-__cxa_atexit
 __cxa_finalize
 __dn_comp
 __dn_count_labels