Error in Android build

[andrea1bergamini]

Building the Android branch I get the following errors:

C:/test/qsqlcipher-qt5-android/android-libs/arm64-v8a/libsqlcipher.a(printf.o): In function `sqlite3_str_vappendf':
printf.c:(.text+0x110): undefined reference to `strchrnul'
C:/test/qsqlcipher-qt5-android/android-libs/arm64-v8a/libsqlcipher.a(crypto_impl.o): In function `sqlcipher_cipher_profile':
crypto_impl.c:(.text+0x3b84): undefined reference to `stderr'
crypto_impl.c:(.text+0x3b88): undefined reference to `stderr'
crypto_impl.c:(.text+0x3b8c): undefined reference to `stdout'
crypto_impl.c:(.text+0x3b90): undefined reference to `stdout'
C:/test/qsqlcipher-qt5-android/android-libs/arm64-v8a/libcrypto.a(cryptlib.o): In function `OPENSSL_showfatal':
cryptlib.c:(.text+0x28): undefined reference to `stderr'
cryptlib.c:(.text+0x30): undefined reference to `stderr'
C:/test/qsqlcipher-qt5-android/android-libs/arm64-v8a/libcrypto.a(ui_openssl.o): In function `open_console':
ui_openssl.c:(.text+0x68): undefined reference to `stdin'
ui_openssl.c:(.text+0x6c): undefined reference to `stdin'
ui_openssl.c:(.text+0x9c): undefined reference to `stderr'
ui_openssl.c:(.text+0xa0): undefined reference to `stderr'
C:/test/qsqlcipher-qt5-android/android-libs/arm64-v8a/libcrypto.a(ui_openssl.o): In function `close_console':
ui_openssl.c:(.text+0x374): undefined reference to `stdin'
ui_openssl.c:(.text+0x378): undefined reference to `stdin'
ui_openssl.c:(.text+0x3a0): undefined reference to `stderr'
ui_openssl.c:(.text+0x3a4): undefined reference to `stderr'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [Makefile:75: plugins\sqldrivers\libqsqlcipher.so] Error 1

NDK version: 21.3.6528147
QT: 5.12.9
Same error with both Windows and Linux host

Error does not show with armeabi-v7a architecure, so it seems related to shared libraries for arm64-v8a or incompatible NDK used for build that libraries.

On the other hand, by using the Android-5.15 branch, the build is successfull for both ABI using QT 5.15 but fails with QT 5.12 using armeabi-v7a architecture (ok with arm64-v8a):

C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libsqlcipher.a(mem1.o):mem1.c:function sqlite3MemRealloc: error: undefined reference to 'malloc_usable_size'
C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libsqlcipher.a(mem1.o):mem1.c:function sqlite3MemSize: error: undefined reference to 'malloc_usable_size'
C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libsqlcipher.a(os_unix.o):os_unix.c:aSyscall: error: undefined reference to 'mmap64'
C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libsqlcipher.a(rtree.o):rtree.c:function geopolyParseNumber: error: undefined reference to 'atof'
C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libcrypto.a(armcap.o):armcap.c:function OPENSSL_cpuid_setup: error: undefined reference to 'sigfillset'
C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libcrypto.a(armcap.o):armcap.c:function OPENSSL_cpuid_setup: error: undefined reference to 'sigdelset'
C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libcrypto.a(armcap.o):armcap.c:function OPENSSL_cpuid_setup: error: undefined reference to 'sigdelset'
C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libcrypto.a(armcap.o):armcap.c:function OPENSSL_cpuid_setup: error: undefined reference to 'sigdelset'
C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libcrypto.a(armcap.o):armcap.c:function OPENSSL_cpuid_setup: error: undefined reference to 'sigdelset'
C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libcrypto.a(ui_openssl.o):ui_openssl.c:function open_console: error: undefined reference to 'tcgetattr'
C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libcrypto.a(ui_openssl.o):ui_openssl.c:function read_string_inner: error: undefined reference to 'signal'
C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libcrypto.a(ui_openssl.o):ui_openssl.c:function read_string_inner: error: undefined reference to 'tcsetattr'
C:/test/qsqlcipher-qt5-android-5.15/android-libs/armeabi-v7a/libcrypto.a(ui_openssl.o):ui_openssl.c:function read_string_inner: error: undefined reference to 'tcsetattr'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [Makefile:75: plugins\sqldrivers\libqsqlcipher.so] Error 1

Same error with Windows and Linux host