./configure --build=x86_64-linux-gnu --host=x86_64-linux-gnu \
--prefix=/usr --libdir=/usr/lib64 --includedir=/usr/include --sysconfdir=/etc \
--enable-shared --enable-static --disable-silent-rules --with-libz --enable-debug \
--with-crypto=openssl --with-libssl-prefix=/usr/local/openssl-1.1.1 \
&& make

checking for shared library run path origin... done
checking for libssl... yes
checking how to link with libssl... /usr/local/openssl-1.1.1/lib/libssl.so /usr/local/openssl-1.1.1/lib/libcrypto.so -Wl,-rpath -Wl,/usr/local/openssl-1.1.1/lib
checking for libz... yes
checking how to link with libz... /usr/lib64/libz.so
checking whether to enable pedantic and debug compiler options... checking how to run the C preprocessor... gcc -E
checking if cpp -P is needed... yes
checking if cpp -P works... yes
yes
checking if compiler is clang... no
checking for icc in use... no
checking gcc version... 11
configure: Added this set of compiler options: -W -Wall -Wwrite-strings -pedantic -Wpointer-arith -Wnested-externs -Winline -Wmissing-prototypes -Wmissing-declarations -Wbad-function-cast -Wundef -Wno-long-long -Wno-multichar -Wshadow -Wsign-compare -Wunused -Wfloat-equal -Wno-format-nonliteral -Wendif-labels -Wstrict-prototypes -Wdeclaration-after-statement -Wstrict-aliasing=3 -Wno-system-headers -Wcast-align -Wtype-limits -Wold-style-declaration -Wmissing-parameter-type -Wempty-body -Wignored-qualifiers -Wconversion -Wno-sign-conversion -Wvla -ftree-vrp -Wdouble-promotion -Wformat=2 -Warray-bounds=2 -Wshift-negative-value -Wshift-overflow=2 -Wnull-dereference -fdelete-null-pointer-checks -Wduplicated-cond -Wunused-const-variable -Wduplicated-branches -Wrestrict -Walloc-zero -Wformat-overflow=2 -Wformat-truncation=1 -Warith-conversion -Wenum-conversion -isystem /usr/local/openssl-1.1.1/include
checking whether to enable hidden symbols in the library... no
...
configure: summary of build options:

  version:          1.11.0
  Host type:        x86_64-pc-linux-gnu
  Install prefix:   /usr
  Compiler:         gcc
  Compiler flags:    -g -g -W -Wall -Wwrite-strings -pedantic -Wpointer-arith -Wnested-externs -Winline -Wmissing-prototypes -Wmissing-declarations -Wbad-function-cast -Wundef -Wno-long-long -Wno-multichar -Wshadow -Wsign-compare -Wunused -Wfloat-equal -Wno-format-nonliteral -Wendif-labels -Wstrict-prototypes -Wdeclaration-after-statement -Wstrict-aliasing=3 -Wno-system-headers -Wcast-align -Wtype-limits -Wold-style-declaration -Wmissing-parameter-type -Wempty-body -Wignored-qualifiers -Wconversion -Wno-sign-conversion -Wvla -ftree-vrp -Wdouble-promotion -Wformat=2 -Warray-bounds=2 -Wshift-negative-value -Wshift-overflow=2 -Wnull-dereference -fdelete-null-pointer-checks -Wduplicated-cond -Wunused-const-variable -Wduplicated-branches -Wrestrict -Walloc-zero -Wformat-overflow=2 -Wformat-truncation=1 -Warith-conversion -Wenum-conversion -isystem /usr/local/openssl-1.1.1/include
  Library types:    Shared=yes, Static=yes
  Crypto library:   OpenSSL
  zlib compression: yes
  Clear memory:     yes
  Debug build:      yes
  Build examples:   yes
  Run Docker tests: yes
  Run sshd tests:   yes
  Path to sshd:     /usr/sbin/sshd (only for self-tests)

...

/bin/sh ../libtool  --tag=CC   --mode=link gcc  -g -g -W -Wall -Wwrite-strings -pedantic -Wpointer-arith -Wnested-externs -Winline -Wmissing-prototypes -Wmissing-declarations -Wbad-function-cast -Wundef -Wno-long-long -Wno-multichar -Wshadow -Wsign-compare -Wunused -Wfloat-equal -Wno-format-nonliteral -Wendif-labels -Wstrict-prototypes -Wdeclaration-after-statement -Wstrict-aliasing=3 -Wno-system-headers -Wcast-align -Wtype-limits -Wold-style-declaration -Wmissing-parameter-type -Wempty-body -Wignored-qualifiers -Wconversion -Wno-sign-conversion -Wvla -ftree-vrp -Wdouble-promotion -Wformat=2 -Warray-bounds=2 -Wshift-negative-value -Wshift-overflow=2 -Wnull-dereference -fdelete-null-pointer-checks -Wduplicated-cond -Wunused-const-variable -Wduplicated-branches -Wrestrict -Walloc-zero -Wformat-overflow=2 -Wformat-truncation=1 -Warith-conversion -Wenum-conversion -isystem /usr/local/openssl-1.1.1/include   -o x11 x11.o ../src/libssh2.la -L/usr/local/openssl-1.1.1/lib -lssl -L/usr/local/openssl-1.1.1/lib -lcrypto -R/usr/local/openssl-1.1.1/lib
libtool: link: gcc -g -g -W -Wall -Wwrite-strings -pedantic -Wpointer-arith -Wnested-externs -Winline -Wmissing-prototypes -Wmissing-declarations -Wbad-function-cast -Wundef -Wno-long-long -Wno-multichar -Wshadow -Wsign-compare -Wunused -Wfloat-equal -Wno-format-nonliteral -Wendif-labels -Wstrict-prototypes -Wdeclaration-after-statement -Wstrict-aliasing=3 -Wno-system-headers -Wcast-align -Wtype-limits -Wold-style-declaration -Wmissing-parameter-type -Wempty-body -Wignored-qualifiers -Wconversion -Wno-sign-conversion -Wvla -ftree-vrp -Wdouble-promotion -Wformat=2 -Warray-bounds=2 -Wshift-negative-value -Wshift-overflow=2 -Wnull-dereference -fdelete-null-pointer-checks -Wduplicated-cond -Wunused-const-variable -Wduplicated-branches -Wrestrict -Walloc-zero -Wformat-overflow=2 -Wformat-truncation=1 -Warith-conversion -Wenum-conversion -isystem /usr/local/openssl-1.1.1/include -o .libs/x11 x11.o  ../src/.libs/libssh2.so -L/usr/local/openssl-1.1.1/lib -lssl -lcrypto -Wl,-rpath -Wl,/usr/lib64 -Wl,-rpath -Wl,/usr/local/openssl-1.1.1/lib
/usr/bin/ld: warning: libssl.so.10, needed by ../src/.libs/libssh2.so, may conflict with libssl.so.1.1
/usr/bin/ld: warning: libcrypto.so.10, needed by ../src/.libs/libssh2.so, may conflict with libcrypto.so.1.1

# readelf -d src/.libs/libssh2.so.1.0.1 

Dynamic section at offset 0x59d88 contains 29 entries:
  Tag        Type                         Name/Value
 0x0000000000000001 (NEEDED)             Shared library: [libz.so.1]
 0x0000000000000001 (NEEDED)             Shared library: [libssl.so.10]
 0x0000000000000001 (NEEDED)             Shared library: [libcrypto.so.10]
 0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]
 0x000000000000000e (SONAME)             Library soname: [libssh2.so.1]
 0x000000000000001d (RUNPATH)            Library runpath: [/usr/local/openssl-1.1.1/lib]