Dear Maintainer, I compile my program with libssl-dev installed: g++ util.o pugixml.o sts.o eeszt.o -o eeszt `pkg-config --libs libcurl` `pkg-config --libs uuid` -lpthread -lssl -lcrypto -lpq /usr/bin/ld: warning: libssl.so.1.0.2, needed by /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libcurl.so, may conflict with libssl.so.1.1 /usr/bin/ld: warning: libcrypto.so.1.0.2, needed by /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libcurl.so, may conflict with libcrypto.so.1.1 The program execution result was a segfault. I have been install libssl1.0-dev: apt-get install libssl1.0-dev. This removed libssl-dev package. I have been tried recompile my program: g++ util.o pugixml.o sts.o eeszt.o -o eeszt `pkg-config --libs libcurl` `pkg-config --libs uuid` -lpthread -lssl -lcrypto -lpq /usr/bin/ld: warning: libssl.so.1.1, needed by /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libpq.so, may conflict with libssl.so.1.0.2 /usr/bin/ld: warning: libcrypto.so.1.1, needed by /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libpq.so, may conflict with libcrypto.so.1.0.2