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Not able to compile openssl for android

I am trying to compile openssl for android and facing some issues. I am following the steps given in this link.
I am using NDK version r20 and OpenSSL 1.1.1c and on a linux machine.
I am facing two issues:
(1) I am able to compile libs for “android-arm” architecture but getting the below errors while compiling sample application.
./libcrypto.so: error: undefined reference to ‘sigdelset’
./libcrypto.so: error: undefined reference to ‘sigfillset’
./libcrypto.so: error: undefined reference to ‘tcgetattr’
./libcrypto.so: error: undefined reference to ‘tcsetattr’
apps/ocsp.o:ocsp.c:function ocsp_main: error: undefined reference to ‘signal’
apps/ocsp.o:ocsp.c:function ocsp_main: error: undefined reference to ‘signal’
apps/ocsp.o:ocsp.c:function ocsp_main: error: undefined reference to ‘signal’
apps/ocsp.o:ocsp.c:function ocsp_main: error: undefined reference to ‘signal’
apps/ocsp.o:ocsp.c:function process_responder: error: undefined reference to ‘__FD_SET_chk’
apps/ocsp.o:ocsp.c:function process_responder: error: undefined reference to ‘__FD_SET_chk’
apps/s_client.o:s_client.c:function s_client_main: error: undefined reference to ‘__FD_SET_chk’
apps/s_client.o:s_client.c:function s_client_main: error: undefined reference to ‘__FD_SET_chk’
apps/s_client.o:s_client.c:function s_client_main: error: undefined reference to ‘__FD_ISSET_chk’
apps/s_client.o:s_client.c:function s_client_main: error: undefined reference to ‘__FD_ISSET_chk’
apps/s_client.o:s_client.c:function s_client_main: error: undefined reference to ‘__FD_ISSET_chk’
apps/s_client.o:s_client.c:function s_client_main: error: undefined reference to ‘__FD_ISSET_chk’
apps/speed.o:speed.c:function speed_main: error: undefined reference to ‘atof’
apps/speed.o:speed.c:function speed_main: error: undefined reference to ‘atof’
apps/speed.o:speed.c:function speed_main: error: undefined reference to ‘atof’
apps/speed.o:speed.c:function speed_main: error: undefined reference to ‘atof’
clang: error: linker command failed with exit code 1 (use -v to see invocation)
(2) I am not able to compile for any other architecture. If I change architecture to “android-arm64” (or any other), I am getting the below errors while compiling library.
crypto/aes/aesv8-armx.S:5:1: error: Unknown arch name
.arch armv8-a+crypto
^
crypto/aes/aesv8-armx.S:17:2: error: invalid instruction, did you mean: stc, stm, str, swp, tst?
stp x29,x30,[sp,#-16]!
^
crypto/aes/aesv8-armx.S:18:6: error: operand must be a register in range [r0, r15]
add x29,sp,#0
^
crypto/aes/aesv8-armx.S:19:6: error: operand must be a register in range [r0, r12] or r14
mov x3,#-1
^
I am changing the architecture by changing the “architecture=android-arm” in the “file-launcher-sh”. Do I need to modify any other variables/macros?

You built openssl for a newer API level than your app, so the library is not compatible with your app. Here's how I build openssl with r20:
$ export ANDROID_NDK=/path/to/ndk
$ export PATH=$ANDROID_NDK/toolchains/llvm/prebuilt/$HOST/bin:$PATH
$ path/to/openssl/Configure android-$ARCH -D__ANDROID_API__=$MINSDKVERSION --prefix=$INSTALLPATH --openssldir=$INSTALLPATH shared
$ make SHLIB_EXT=.so install_sw

I just had to open new putty for each new architecture.
I think somehow few of the configurations/variables exported for one architecture are not getting updated when I re-run the script with new architecture.

Add the compiler flag "no-asm" to ./Configure
./Configure no-asm no-shared android-$ARCH -D__ANDROID_API__=$MINSDKVERSION --prefix=$INSTALLPATH --openssldir=$INSTALLPATH shared

android cmake undefined reference to properties defined in libuv headers

there is a source code which is built fine (using cmake) for my host platform but when i target android(using android studio cmake) on the same platfrom it gives me the following errors:
Error:error: cannot find -l[/root/libuv-1.x/out/cmake/libuv.a]
Error:error: cannot find -lpthread
Error:(49) undefined reference to 'uv_default_loop'
Error:(84) undefined reference to 'uv_fs_open'
Error:(49) undefined reference to 'uv_now'
...
any reference to properties defined in uv headers creates a undefined reference to x error.
this is how i include uv in the project cmake:
set(UV_INCLUDE_DIR "[/root/libuv-1.x/include/]")
set(UV_LIBRARY "[/root/libuv-1.x/out/cmake/libuv.a]")
find_package(UV REQUIRED)
include_directories("/root/libuv-1.x/include/")
include_directories(${UV_INCLUDE_DIR})
and this is how i compile and link the source code in cmake:
add_library(proto-lib SHARED ${HEADERS} ${SOURCES} ${HTTPD_SOURCES})
target_link_libraries(proto-lib ${UV_LIBRARIES} ${EXTRA_LIBS})
the libuv doesn't seem to be included at all.
how can i fix this?

NCurses 6.0 Compilation Error Using Android-NDK

I'm trying to cross-compile ncurses using android-ndk but compilation error shows halfway the process.
Command:
CC=~/my-toolchain/bin/arm-linux-androideabi-gcc ./configure --host=arm-linux-androideabi --prefix=/Android
Output:
** Configuration summary for NCURSES 6.0 20150808:
extended funcs: yes
xterm terminfo: xterm-new
bin directory: /Android/bin
lib directory: /Android/lib
include directory: /Android/include/ncurses
man directory: /Android/share/man
terminfo directory: /Android/share/terminfo
** Include-directory is not in a standard location
Command
make
Output
../objects/tic.o:tic.c:function usage: error: undefined reference to 'stderr'
../objects/tic.o:tic.c:function put_translate: error: undefined reference to 'stdout'
../objects/tic.o:tic.c:function copy_input: error: undefined reference to 'stderr'
../objects/tic.o:tic.c:function open_input: error: undefined reference to 'stdin'
../objects/tic.o:tic.c:function open_input: error: undefined reference to 'stderr'
../objects/tic.o:tic.c:function show_databases: error: undefined reference to 'stdout'
../objects/tic.o:tic.c:function show_databases: error: undefined reference to 'stderr'
../objects/dump_entry.o:dump_entry.c:function show_entry: error: undefined reference to 'stdout'
../objects/dump_entry.o:dump_entry.c:function compare_entry: error: undefined reference to 'stdout'
../lib/libncurses.a(lib_twait.o):lib_twait.c:function _nc_timed_wait: error: undefined reference to '__FD_SET_chk'
../lib/libncurses.a(lib_twait.o):lib_twait.c:function _nc_timed_wait: error: undefined reference to '__FD_SET_chk'
../lib/libncurses.a(lib_twait.o):lib_twait.c:function _nc_timed_wait: error: undefined reference to '__FD_ISSET_chk'
../lib/libncurses.a(lib_twait.o):lib_twait.c:function _nc_timed_wait: error: undefined reference to '__FD_ISSET_chk'
collect2: error: ld returned 1 exit status
Makefile:242: recipe for target 'tic' failed
make[1]: *** [tic] Error 1
make[1]: Leaving directory '/home/jrm/softether/src/curses/ncurses-6.0/progs'
Makefile:113: recipe for target 'all' failed
make: *** [all] Error 2
I don't have any idea about the error. I tried using google but i can't seem to find similar problems like mine.

The usual reason for this error is that you've compiled against android-23 or higher but are linking against something earlier. Another variation of that issue is when you have multiple libraries built against different API levels.
It looks like you are using a standalone toolchain? If that's correct, then I'd suspect your issue is either a prebuilt library that's part of libcurses (FWIR there aren't any of those, so unlikely) or that there's something funky going on in their build scripts that causes one of the two issues I mentioned. Tons of projects add their own Android specific hacks to their build scripts that always end up being the cause of these sorts of issues, so that wouldn't surprise me at all.
Should look at both the compilation command for tic.c and the link command for whatever library/executable is failing to link there. Make sure both are using the same API levels (look for things like $NDK/platforms/android-$API_LEVEL, -D__ANDROID_API__=$API_LEVEL, and -target arm-linux-androideabi$API_LEVEL).
btw, not ncurses 6, but I do have an example showing how to use standalone toolchains that had to build ncurses 5.9: https://github.com/DanAlbert/lua-ndk/blob/master/build_lua_with_libreadline.sh#L75. Might be worth taking a look to see if that helps at all.

Iotivity scons build error(cbor)

This is my build environment
Ubuntu 14.04 LTS
Android NDK r10d
Android SDK API 21 SDK Platporm, build-tools 20
but, when I build scons TARGET_OS=android TARGET_ARCH=armeabi
they throw exception on building like
Archiving out/android/armeabi/release/resource/csdk/security/libocsrm.a
Indexing Archive out/android/armeabi/release/resource/csdk/security/libocsrm.a
Install file: "out/android/armeabi/release/resource/csdk/security/libocsrm.a" as "out/android/armeabi/release/libocsrm.a"
Linking out/android/armeabi/release/resource/csdk/liboctbstack.so
out/android/armeabi/release/resource/csdk/stack/src/ocpayloadparse.os:ocpayloadparse.c:function OCParseStringLL: error: undefined reference to '_cbor_value_dup_string'
out/android/armeabi/release/resource/csdk/stack/src/ocpayloadparse.os:ocpayloadparse.c:function OCParseSingleRepPayload: error: undefined reference to '_cbor_value_dup_string'
out/android/armeabi/release/resource/csdk/stack/src/ocpayloadparse.os:ocpayloadparse.c:function OCParseSingleRepPayload: error: undefined reference to '_cbor_value_dup_string'
out/android/armeabi/release/resource/csdk/stack/src/ocpayloadparse.os:ocpayloadparse.c:function OCParseSingleRepPayload: error: undefined reference to '_cbor_value_dup_string'
collect2: error: ld returned 1 exit status
scons: *** [out/android/armeabi/release/resource/csdk/liboctbstack.so] Error 1
scons: building terminated because of errors.
I don't know what to do, How can I resolve it?

Add one line in file tinycbor/SConscript
cbor_src = [
...
os.path.join(cborDir, 'src/cborparser_dup_string.c'), <- add this line

GStreamer "undefined reference to '__srget'"

I have troubles to run the GStreamer tutorials. I followed all tutorial steps, and run into an error.
My System:
android-ndk-r11c, gstreamer-sdk-android-arm-debug-2013.6
My System: Windows 10 - 64 bit
The Error:
C:\gstreamer-sdk-android-arm-debug-2013.6\share\gst-sdk\tutorials\android-tutorial-1>ndk-build
GStreamer : [GEN] => gst-build/gstreamer_android.c
GStreamer : [COMPILE] => gst-build/gstreamer_android.c
GStreamer : [LINK] => gst-build/libgstreamer_android.so
lex.priv_gst_parse_yy.c:1598: error: undefined reference to '__srget'
gutils.c:2406: error: undefined reference to 'issetugid'
localcharset.c:158: error: undefined reference to '__srget'
localcharset.c:167: error: undefined reference to '__srget'
./localcharset.c:195: error: undefined reference to '__srget'
/home/slomo/Projects/android/android-ndk-r8e/toolchains/arm-linux-androideabi-4.7/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.7/include-fixed/stdio.h:376: error: undefined reference to '__swbuf'
collect2.exe: error: ld returned 1 exit status
make: *** [buildsharedlibrary] Error 1
C:\gstreamer-sdk-android-arm-debug-2013.6\share\gst-sdk\tutorials\android-tutorial-1>
I tried:
Windows linkage problems : Due to problems related to the standard linker, Google’s Gold Linker is used to build GStreamer applications. Unfortunately, the Android NDK toolchain for Windows does not include the gold linker and the standard one has to be used.
If you observe linkage problems, you can replace the linker in your Android NDK with the gold one from this project. Download the android-ndk-r8b-ma-windows.7z file, extract \android-ndk-r8b\toolchains\arm-linux-androideabi-4.6\prebuilt\windows\arm-linux-androideabi\bin\ld.exe (only this file is needed) and overwrite the one in the same folder in your Android NDK installation.
No effect. Any ideas how to solve this?

I had similar problem before please give a try with ndk10b.It is always good to check in header files for __srget before move forward.