title: i am facing error while compiling the source code in apache
body: <p>Below is the error while running make command </p>
  
  <pre><code>/home/apache/httpd-2.4.41/srclib/apr/libtool --silent --mode=link gcc -std=gnu99  -g -O2 -pthread    \
        -L/opt/httpd/expat/lib   -o ab  ab.lo      /home/apache/httpd-2.4.41/srclib/apr-util/libaprutil-1.la -lexpat /home/apache/httpd-2.4.41/srclib/apr/libapr-1.la -luuid -lrt -lcrypt -lpthread -ldl -lm -lssl -lcrypto -luuid -lrt -lcrypt -lpthread -ldl
  ab.o: In function `ssl_state_cb':
  /home/apache/httpd-2.4.41/support/ab.c:575: undefined reference to `SSL_in_init'
  ab.o: In function `ssl_print_cert_info':
  /home/apache/httpd-2.4.41/support/ab.c:653: undefined reference to `X509_get_version'
  /home/apache/httpd-2.4.41/support/ab.c:655: undefined reference to `X509_getm_notBefore'
  /home/apache/httpd-2.4.41/support/ab.c:659: undefined reference to `X509_getm_notAfter'
  ab.o: In function `sk_X509_num':
  /usr/local/include/openssl/x509.h:99: undefined reference to `OPENSSL_sk_num'
  ab.o: In function `sk_X509_value':
  /usr/local/include/openssl/x509.h:99: undefined reference to `OPENSSL_sk_value'
  ab.o: In function `main':
  /home/apache/httpd-2.4.41/support/ab.c:2305: undefined reference to `TLS_client_method'
  /home/apache/httpd-2.4.41/support/ab.c:2560: undefined reference to `TLS_client_method'
  /home/apache/httpd-2.4.41/support/ab.c:2637: undefined reference to `OPENSSL_init_ssl'
  /home/apache/httpd-2.4.41/support/ab.c:2638: undefined reference to `OPENSSL_init_ssl'
  /home/apache/httpd-2.4.41/support/ab.c:2647: undefined reference to `SSL_CTX_set_options'
  ab.o: In function `test':
  /home/apache/httpd-2.4.41/support/ab.c:1990: undefined reference to `SSL_in_init'
  collect2: error: ld returned 1 exit status
  make[2]: *** [ab] Error 1
  make[2]: Leaving directory `/home/apache/httpd-2.4.41/support'
  make[1]: *** [all-recursive] Error 1
  make[1]: Leaving directory `/home/apache/httpd-2.4.41/support'
  make: *** [all-recursive] Error 1
  </code></pre>
  
  <p>Please let me know how to proceed further.
  openssl version is OpenSSL> version
  OpenSSL 1.1.1c  28 May 2019</p>