diff --git a/README.md b/README.md
index bf649dd..dab6643 100644
--- a/README.md
+++ b/README.md
@@ -7,8 +7,8 @@ Originally ported by [cjacker](http://ios-toolchain-based-on-clang-for-linux.goo
 
 **SUPPORTED OPERATING SYSTEMS:**
 
-Linux, FreeBSD, Mac OS X, iOS,  
-OpenBSD and NetBSD
+Linux, Android (Termux), FreeBSD,  
+Mac OS X, iOS, OpenBSD and NetBSD
 
 **SUPPORTED HOST ARCHITECTURES:**
 
diff --git a/cctools/ar/archive.c b/cctools/ar/archive.c
index 74a679d..045dd8c 100644
--- a/cctools/ar/archive.c
+++ b/cctools/ar/archive.c
@@ -78,6 +78,7 @@ static char rcsid[] = "$NetBSD: archive.c,v 1.7 1995/03/26 03:27:46 glass Exp $"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <unistd.h>
 
 #include <mach-o/fat.h>
diff --git a/cctools/as/arm.c b/cctools/as/arm.c
index 680225d..68fe77d 100644
--- a/cctools/as/arm.c
+++ b/cctools/as/arm.c
@@ -3,6 +3,7 @@
 #include <stdlib.h>
 #include <stdarg.h>
 #include <string.h>
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <mach-o/arm/reloc.h>
 #include "as.h"
 #include "flonum.h"
diff --git a/cctools/as/driver.c b/cctools/as/driver.c
index 24b468b..cbc1263 100644
--- a/cctools/as/driver.c
+++ b/cctools/as/driver.c
@@ -9,6 +9,7 @@
 #include "stdio.h"
 #include "stdlib.h"
 #include "string.h"
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include "libc.h"
 #include <sys/file.h>
 #include <mach/mach.h>
diff --git a/cctools/as/dwarf2dbg.c b/cctools/as/dwarf2dbg.c
index 9c4c31e..5f15fca 100644
--- a/cctools/as/dwarf2dbg.c
+++ b/cctools/as/dwarf2dbg.c
@@ -30,6 +30,7 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <unistd.h>
 #include <sys/param.h>
 #include <libgen.h>
diff --git a/cctools/as/input-file.c b/cctools/as/input-file.c
index f7ec600..636bac1 100644
--- a/cctools/as/input-file.c
+++ b/cctools/as/input-file.c
@@ -29,6 +29,7 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <assert.h>
 #include <libc.h>
 #include "input-file.h"
diff --git a/cctools/as/symbols.c b/cctools/as/symbols.c
index e5d76b5..699efec 100644
--- a/cctools/as/symbols.c
+++ b/cctools/as/symbols.c
@@ -19,6 +19,7 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 #include <stdlib.h>
 #include <string.h>
+#include <strings.h>    /* cctools-port: For bcmp, bzero ... */
 #include <ctype.h>
 #include "as.h"
 #include "hash.h"
diff --git a/cctools/autogen.sh b/cctools/autogen.sh
index 9258d0d..ca899f5 100755
--- a/cctools/autogen.sh
+++ b/cctools/autogen.sh
@@ -19,7 +19,7 @@ fi
 export LIBTOOLIZE
 mkdir -p m4
 
-$LIBTOOLIZE -c -i
+$LIBTOOLIZE -c -i --force
 aclocal -I m4
 autoconf
 
diff --git a/cctools/configure b/cctools/configure
index 8e42007..21ac3d6 100755
--- a/cctools/configure
+++ b/cctools/configure
@@ -16995,6 +16995,18 @@ _ACEOF
 fi
 done
 
+for ac_func in bcopy bcmp bzero index rindex
+do :
+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
+if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
 
 ### Check how to access struct stat's tv_nsec field.
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for st_mtimespec.tv_nsec in struct stat" >&5
diff --git a/cctools/configure.ac b/cctools/configure.ac
index 22cee73..05068a6 100644
--- a/cctools/configure.ac
+++ b/cctools/configure.ac
@@ -202,6 +202,7 @@ AC_CHECK_LIB([uuid],[uuid_generate_random],[
 AC_SUBST(UUID_LIB)
 
 AC_CHECK_FUNCS([strmode utimens utimensat])
+AC_CHECK_FUNCS([bcopy bcmp bzero index rindex])
 
 ### Check how to access struct stat's tv_nsec field.
 AC_MSG_CHECKING(for st_mtimespec.tv_nsec in struct stat)
diff --git a/cctools/include/foreign/mach/i386/vm_param.h b/cctools/include/foreign/mach/i386/vm_param.h
index 1f9da2f..abd089c 100644
--- a/cctools/include/foreign/mach/i386/vm_param.h
+++ b/cctools/include/foreign/mach/i386/vm_param.h
@@ -95,7 +95,8 @@
 #define I386_PGBYTES		4096		/* bytes per 80386 page */
 #define I386_PGSHIFT		12		/* bitshift for pages */
 
-#undef	PAGE_SIZE				/* Cygwin */
+#undef	PAGE_SIZE               /* cctools-port */
+#undef  PAGE_MASK
 #define	PAGE_SIZE		I386_PGBYTES
 #define	PAGE_SHIFT		I386_PGSHIFT
 #define	PAGE_MASK		(PAGE_SIZE - 1)
diff --git a/cctools/include/sys/cdefs.h b/cctools/include/sys/cdefs.h
index 9fac96f..61e4e8b 100644
--- a/cctools/include/sys/cdefs.h
+++ b/cctools/include/sys/cdefs.h
@@ -1,5 +1,5 @@
 #if defined(__GLIBC__) || defined(__APPLE__) || defined(__FreeBSD__) || \
-    defined(__OpenBSD__) || defined(__NetBSD__)
+    defined(__OpenBSD__) || defined(__NetBSD__) || defined(__ANDROID__)
 
 #include_next <sys/cdefs.h>
 
diff --git a/cctools/ld64/src/3rd/helper.h b/cctools/ld64/src/3rd/helper.h
index 5d34afb..4fac2e1 100644
--- a/cctools/ld64/src/3rd/helper.h
+++ b/cctools/ld64/src/3rd/helper.h
@@ -5,18 +5,6 @@
 #define __USE_GNU
 #endif
 
-#ifndef __has_extension
-#define __has_extension(x) 0
-#endif
-
-#ifndef __has_include
-#define __has_include(x) 0
-#endif
-
-#ifndef __has_include_next
-#define __has_include_next(x) 0
-#endif
-
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/cctools/ld64/src/ld/Options.cpp b/cctools/ld64/src/ld/Options.cpp
index 523eb10..e4b37ec 100644
--- a/cctools/ld64/src/ld/Options.cpp
+++ b/cctools/ld64/src/ld/Options.cpp
@@ -34,7 +34,9 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <string.h>
+#ifndef __ANDROID__ // ld64-port
 #include <spawn.h>
+#endif
 #include <cxxabi.h>
 #include <Availability.h>
 #ifdef TAPI_SUPPORT
diff --git a/cctools/ld64/src/ld/debugline.c b/cctools/ld64/src/ld/debugline.c
index c4e151d..dd43c63 100644
--- a/cctools/ld64/src/ld/debugline.c
+++ b/cctools/ld64/src/ld/debugline.c
@@ -22,6 +22,7 @@
  */
 #ifndef KLD
 #include <string.h>
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <stdlib.h>
 #include <stdbool.h>
 #include <stdio.h>
diff --git a/cctools/libstuff/execute.c b/cctools/libstuff/execute.c
index 4eee640..244a2ba 100644
--- a/cctools/libstuff/execute.c
+++ b/cctools/libstuff/execute.c
@@ -24,6 +24,7 @@
 #include <libc.h> /* first to get rid of pre-comp warning */
 #include <mach/mach.h> /* first to get rid of pre-comp warning */
 #include "stdio.h"
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <signal.h>
 #include <sys/wait.h>
 #include <sys/file.h>
diff --git a/cctools/libstuff/llvm.c b/cctools/libstuff/llvm.c
index 30952bb..76674d4 100644
--- a/cctools/libstuff/llvm.c
+++ b/cctools/libstuff/llvm.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <stdlib.h>
 #include <libc.h>
 #include <sys/file.h>
diff --git a/cctools/libstuff/lto.c b/cctools/libstuff/lto.c
index 286ac5b..598f919 100644
--- a/cctools/libstuff/lto.c
+++ b/cctools/libstuff/lto.c
@@ -1,6 +1,7 @@
 #ifdef LTO_SUPPORT
 
 #include <stdio.h>
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <stdlib.h>
 #include <libc.h>
 #include <sys/file.h>
diff --git a/cctools/libstuff/port.c b/cctools/libstuff/port.c
index 1137dc8..4191454 100644
--- a/cctools/libstuff/port.c
+++ b/cctools/libstuff/port.c
@@ -1,5 +1,6 @@
 #include <stdlib.h>
 #include <string.h>
+#include <strings.h>
 #include <unistd.h>
 #include <stdio.h>
 #include <sys/stat.h>
diff --git a/cctools/misc/nm.c b/cctools/misc/nm.c
index 88d359d..9ca98fd 100644
--- a/cctools/misc/nm.c
+++ b/cctools/misc/nm.c
@@ -85,6 +85,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <ctype.h>
 #include <libc.h>
 #include <dlfcn.h>
diff --git a/cctools/misc/redo_prebinding.c b/cctools/misc/redo_prebinding.c
index bfca128..b3e15bf 100644
--- a/cctools/misc/redo_prebinding.c
+++ b/cctools/misc/redo_prebinding.c
@@ -86,6 +86,7 @@
 #import <stdio.h>
 #import <stdlib.h>
 #import <string.h>
+#import <strings.h> /* cctools-port: For bcmp, bzero ... */
 #import <limits.h>
 #import <libc.h>
 #import <malloc/malloc.h>
diff --git a/cctools/misc/segedit.c b/cctools/misc/segedit.c
index 9ec7eaf..b043864 100644
--- a/cctools/misc/segedit.c
+++ b/cctools/misc/segedit.c
@@ -32,6 +32,7 @@
 #include <stdlib.h>
 #include <stdarg.h>
 #include <string.h>
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <errno.h>
 #include <stdio.h>
 #include <sys/file.h>
diff --git a/cctools/misc/strip.c b/cctools/misc/strip.c
index 8e16f62..6a638e3 100644
--- a/cctools/misc/strip.c
+++ b/cctools/misc/strip.c
@@ -28,6 +28,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <limits.h>
 #include <ctype.h>
 #include <libc.h>
diff --git a/cctools/otool/arm64_disasm.c b/cctools/otool/arm64_disasm.c
index e29d1cb..8e3e5d2 100644
--- a/cctools/otool/arm64_disasm.c
+++ b/cctools/otool/arm64_disasm.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <string.h>
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <stdlib.h>
 #include <mach-o/loader.h>
 #include <mach-o/nlist.h>
diff --git a/cctools/otool/i386_disasm.c b/cctools/otool/i386_disasm.c
index 1fe7894..55f9409 100644
--- a/cctools/otool/i386_disasm.c
+++ b/cctools/otool/i386_disasm.c
@@ -57,6 +57,7 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include <mach-o/loader.h>
 #include <mach-o/nlist.h>
 #include <mach-o/reloc.h>
diff --git a/cctools/otool/print_objc2_64bit.c b/cctools/otool/print_objc2_64bit.c
index 00993a8..67304e2 100644
--- a/cctools/otool/print_objc2_64bit.c
+++ b/cctools/otool/print_objc2_64bit.c
@@ -32,6 +32,7 @@
 #include "stdlib.h"
 #include "stddef.h"
 #include "string.h"
+#include <strings.h> /* cctools-port: For bcmp, bzero ... */
 #include "mach-o/loader.h"
 #include "mach-o/arm64/reloc.h"
 #include "stuff/allocate.h"
diff --git a/usage_examples/ios_toolchain/build.sh b/usage_examples/ios_toolchain/build.sh
index 8a92c0a..bb78112 100755
--- a/usage_examples/ios_toolchain/build.sh
+++ b/usage_examples/ios_toolchain/build.sh
@@ -4,6 +4,12 @@ export LC_ALL=C
 pushd "${0%/*}" &>/dev/null
 
 PLATFORM=$(uname -s)
+OPERATING_SYSTEM=$(uname -o || echo "-")
+
+if [ $OPERATING_SYSTEM == "Android" ]; then
+  export CC="clang -D__ANDROID_API__=26"
+  export CXX="clang++ -D__ANDROID_API__=26"
+fi
 
 if [ -z "$LLVM_DSYMUTIL" ]; then
     LLVM_DSYMUTIL=llvm-dsymutil
@@ -141,7 +147,7 @@ if [ $OK -eq 1 ]; then
     pushd $TARGETDIR/bin &>/dev/null
     ln -sf $TRIPLE-lipo lipo
     popd &>/dev/null
-else
+elif ! which dsymutil &>/dev/null; then
     echo "int main(){return 0;}" | cc -xc -O2 -o $TARGETDIR/bin/dsymutil -
 fi
 
diff --git a/usage_examples/ios_toolchain/wrapper.c b/usage_examples/ios_toolchain/wrapper.c
index b44b6fe..4d1bbf5 100644
--- a/usage_examples/ios_toolchain/wrapper.c
+++ b/usage_examples/ios_toolchain/wrapper.c
@@ -147,7 +147,7 @@ int main(int argc, char *argv[])
 
     target_info(argv, &target, &compiler);
     if (!get_executable_path(execpath, sizeof(execpath))) abort();
-    snprintf(sdkpath, sizeof(sdkpath), "%s/../SDK/" SDK_DIR, execpath);
+    snprintf(sdkpath, sizeof(sdkpath) - 1, "%s/../SDK/" SDK_DIR, execpath);
 
     snprintf(codesign_allocate, sizeof(codesign_allocate),
              "%s-codesign_allocate", target);