I am cross-compiling Python 3.8 for the ARM platform on an x86_64 environment. After configuring with configure, I encountered the following message during make:

The necessary bits to build these optional modules were not found:
_bz2                  _curses               _curses_panel  
_dbm                  _gdbm                 _lzma  
_sqlite3              _tkinter              nis  
readline

I have already executed the following command:

sudo apt-get install libbz2-dev libncurses5-dev libncursesw5-dev libgdbm-dev liblzma-dev libsqlite3-dev tk-dev uuid-dev libreadline-dev libgdbm-compat-dev

However, I still receive the above warning message.

I tried downloading the source code for bzip2-1.0.8. After uncompressing it, I ran make && make install. Then, I wrote a shell script for configuration purposes.

    #!/bin/bash

make clean

ZLIB_ARM_LIB_LDFLAGS=/home/xjgc/Desktop/OpenPLC/tools/zlib/zlib-1.3.1/zlib_arm/lib
FFI_ARM_LIB_LDFLAGS=/home/xjgc/Desktop/OpenPLC/tools/libffi-3.3/libffi_arm/lib
SSL_ARM_LIB_LDFLAGS=/home/xjgc/Desktop/OpenPLC/tools/openssl-1.1.1i/openssl_arm/lib
UUID_ARM_LIB_LDFLAGS=/home/xjgc/Desktop/OpenPLC/tools/libuuid-1.0.3/uuid_arm/lib
BZIP2_ARM_LIB_LDFLAGS=/home/xjgc/Desktop/OpenPLC/tools/bzip2-1.0.8/bz2_arm/lib

ZLIB_ARM_INCLUDE=/home/xjgc/Desktop/OpenPLC/tools/zlib/zlib-1.3.1/zlib_arm/include
FFI_ARM_INCLUDE=/home/xjgc/Desktop/OpenPLC/tools/libffi-3.3/libffi_arm/include
SSL_ARM_INCLUDE=/home/xjgc/Desktop/OpenPLC/tools/openssl-1.1.1i/openssl_arm/include
UUID_ARM_INCLUDE=/home/xjgc/Desktop/OpenPLC/tools/libuuid-1.0.3/uuid_arm/include
BZIP2_ARM_INCLUDE=/home/xjgc/Desktop/OpenPLC/tools/bzip2-1.0.8/bz2_arm/include

ZLIB_ARM_PKG_CONFIG_PATH=/home/xjgc/Desktop/OpenPLC/tools/zlib/zlib-1.3.1/zlib_arm/lib/pkgconfig
FFI_ARM_PKG_CONFIG_PATH=/home/xjgc/Desktop/OpenPLC/tools/libffi-3.3/libffi_arm/lib/pkgconfig
SSL_ARM_PKG_CONFIG_PATH=/home/xjgc/Desktop/OpenPLC/tools/openssl-1.1.1i/openssl_arm/lib/pkgconfig
UUID_ARM_PKG_CONFIG_PATH=/home/xjgc/Desktop/OpenPLC/tools/libuuid-1.0.3/uuid_arm/lib/pkgconfig

export PKG_CONFIG_PATH=${ZLIB_ARM_PKG_CONFIG_PATH}:${FFI_ARM_PKG_CONFIG_PATH}:${SSL_ARM_PKG_CONFIG_PATH}:${UUID_ARM_PKG_CONFIG_PATH}:$PKG_CONFIG_PATH



./configure 
--prefix=$(pwd)/build_arm 
--host=arm-linux-gnueabihf 
--build=x86_64-linux-gnu 
--disable-ipv6 
CC=arm-linux-gnueabihf-gcc 
CXX=arm-linux-gnueabihf-g++ 
AR=arm-linux-gnueabihf-ar 
RANLIB=arm-linux-gnueabihf-ranlib 
STRIP=arm-linux-gnueabihf-strip 
LDFLAGS="-L${ZLIB_ARM_LIB_LDFLAGS} -L${FFI_ARM_LIB_LDFLAGS} -L${SSL_ARM_LIB_LDFLAGS} -L${UUID_ARM_LIB_LDFLAGS} -L${BZIP2_ARM_LIB_LDFLAGS}" 
CFLAGS="-Wall -g -I${ZLIB_ARM_INCLUDE} -I${FFI_ARM_INCLUDE} -I${SSL_ARM_INCLUDE} -I${UUID_ARM_INCLUDE} -I${BZIP2_ARM_INCLUDE}" 
CPPFLAGS="-Wall -g -I${ZLIB_ARM_INCLUDE} -I${FFI_ARM_INCLUDE} -I${SSL_ARM_INCLUDE} -I${UUID_ARM_INCLUDE} -I${BZIP2_ARM_INCLUDE}s" 
LIBS="-lz -lffi -lssl -lcrypto -luuid -lbz2" 
ac_cv_file__dev_ptmx=no  
ac_cv_file__dev_ptc=no

but when I make, I got the wrong message:

    Python build finished successfully!
The necessary bits to build these optional modules were not found:
_curses               _curses_panel         _dbm               
_gdbm                 _lzma                 _sqlite3           
_tkinter              nis                   readline           
To find the necessary bits, look in setup.py in detect_modules() for the module's name.


The following modules found by detect_modules() in setup.py, have been
built by the Makefile instead, as configured by the Setup files:
_abc                  _ssl                  atexit             
pwd                   time                  zlib               


Failed to build these modules:
_bz2

What should I do?