diff --git a/ndk/platforms/android-18/arch-arm/symbols/libc.so.functions.txt b/ndk/platforms/android-18/arch-arm/symbols/libc.so.functions.txt
index 3ebc908..a05aae6 100644
--- a/ndk/platforms/android-18/arch-arm/symbols/libc.so.functions.txt
+++ b/ndk/platforms/android-18/arch-arm/symbols/libc.so.functions.txt
@@ -1,89 +1,6 @@
 MD5_Final
 MD5_Init
 MD5_Update
-SHA1Final
-SHA1Init
-SHA1Transform
-SHA1Update
-_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
-___Unwind_Backtrace
-___Unwind_ForcedUnwind
-___Unwind_RaiseException
-___Unwind_Resume
-___Unwind_Resume_or_Rethrow
-__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_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_ldiv0
-__aeabi_ldivmod
-__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
 __arc4_getbyte
 __assert
 __assert2
@@ -152,26 +69,8 @@
 __get_thread
 __getcwd
 __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
 __init_tls
@@ -350,7 +249,6 @@
 asctime64_r
 asctime_r
 asprintf
-atexit
 atoi
 atol
 atoll
@@ -403,12 +301,9 @@
 dlindependent_calloc
 dlindependent_comalloc
 dlmallinfo
-dlmalloc
 dlmalloc_footprint
 dlmalloc_max_footprint
 dlmalloc_stats
-dlmalloc_trim
-dlmalloc_usable_size
 dlmallopt
 dlmemalign
 dlpvalloc
diff --git a/ndk/platforms/android-18/arch-arm/symbols/libc.so.variables.txt b/ndk/platforms/android-18/arch-arm/symbols/libc.so.variables.txt
index 5fc19bc..2b3a476 100644
--- a/ndk/platforms/android-18/arch-arm/symbols/libc.so.variables.txt
+++ b/ndk/platforms/android-18/arch-arm/symbols/libc.so.variables.txt
@@ -3,7 +3,6 @@
 _C_toupper_
 __atexit
 __atexit_invalid
-__bionic_brk
 __isthreaded
 __libc_malloc_default_dispatch
 __libc_malloc_dispatch
diff --git a/ndk/platforms/android-18/arch-mips/symbols/libc.so.functions.txt b/ndk/platforms/android-18/arch-mips/symbols/libc.so.functions.txt
index 367350f..886d614 100644
--- a/ndk/platforms/android-18/arch-mips/symbols/libc.so.functions.txt
+++ b/ndk/platforms/android-18/arch-mips/symbols/libc.so.functions.txt
@@ -1,10 +1,6 @@
 MD5_Final
 MD5_Init
 MD5_Update
-SHA1Final
-SHA1Init
-SHA1Transform
-SHA1Update
 __arc4_getbyte
 __assert
 __assert2
@@ -219,7 +215,6 @@
 asctime64_r
 asctime_r
 asprintf
-atexit
 atoi
 atol
 atoll
@@ -272,12 +267,9 @@
 dlindependent_calloc
 dlindependent_comalloc
 dlmallinfo
-dlmalloc
 dlmalloc_footprint
 dlmalloc_max_footprint
 dlmalloc_stats
-dlmalloc_trim
-dlmalloc_usable_size
 dlmallopt
 dlmemalign
 dlpvalloc
diff --git a/ndk/platforms/android-18/arch-mips/symbols/libc.so.variables.txt b/ndk/platforms/android-18/arch-mips/symbols/libc.so.variables.txt
index 5fc19bc..2b3a476 100644
--- a/ndk/platforms/android-18/arch-mips/symbols/libc.so.variables.txt
+++ b/ndk/platforms/android-18/arch-mips/symbols/libc.so.variables.txt
@@ -3,7 +3,6 @@
 _C_toupper_
 __atexit
 __atexit_invalid
-__bionic_brk
 __isthreaded
 __libc_malloc_default_dispatch
 __libc_malloc_dispatch
diff --git a/ndk/platforms/android-18/arch-x86/symbols/libc.so.functions.txt b/ndk/platforms/android-18/arch-x86/symbols/libc.so.functions.txt
index 74dd9b4..a730ec7 100644
--- a/ndk/platforms/android-18/arch-x86/symbols/libc.so.functions.txt
+++ b/ndk/platforms/android-18/arch-x86/symbols/libc.so.functions.txt
@@ -1,10 +1,6 @@
 MD5_Final
 MD5_Init
 MD5_Update
-SHA1Final
-SHA1Init
-SHA1Transform
-SHA1Update
 __arc4_getbyte
 __assert
 __assert2
@@ -267,12 +263,9 @@
 dlindependent_calloc
 dlindependent_comalloc
 dlmallinfo
-dlmalloc
 dlmalloc_footprint
 dlmalloc_max_footprint
 dlmalloc_stats
-dlmalloc_trim
-dlmalloc_usable_size
 dlmallopt
 dlmemalign
 dlpvalloc
diff --git a/ndk/platforms/android-18/arch-x86/symbols/libc.so.variables.txt b/ndk/platforms/android-18/arch-x86/symbols/libc.so.variables.txt
index 5fc19bc..2b3a476 100644
--- a/ndk/platforms/android-18/arch-x86/symbols/libc.so.variables.txt
+++ b/ndk/platforms/android-18/arch-x86/symbols/libc.so.variables.txt
@@ -3,7 +3,6 @@
 _C_toupper_
 __atexit
 __atexit_invalid
-__bionic_brk
 __isthreaded
 __libc_malloc_default_dispatch
 __libc_malloc_dispatch