HTTP3之QUICTLS编译冲突问题

openssl: error while loading shared libraries: libssl.so.81.3: cannot open shared object file: No such file or directory

ldd $(which openssl)
     linux-vdso.so.1 (0x00007fff7****000)
     libssl.so.81.3 => not found
     libcrypto.so.81.3 => not found
     libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fb650****00)
     /lib64/ld-linux-x86-64.so.2 (0x00007fb65****000)

ls -l /usr/lib/x86_64-linux-gnu | grep -E 'libssl|libcrypto'
     -rw-r--r--  1 root root   9098630  2月  1 02:43 libcrypto.a
     lrwxrwxrwx  1 root root        14  2月  1 02:43 libcrypto.so -> libcrypto.so.3
     -rw-r--r--  1 root root   4451632  2月  1 02:43 libcrypto.so.3
     -rw-r--r--  1 root root    418464  2月 17  2023 libssl3.so
     -rw-r--r--  1 root root   1231268  2月  1 02:43 libssl.a
     lrwxrwxrwx  1 root root        11  2月  1 02:43 libssl.so -> libssl.so.3
     -rw-r--r--  1 root root    667864  2月  1 02:43 libssl.so.3

If a shared object dependency does not contain a slash, then it
       is searched for in the following order:

       (1)  Using the directories specified in the DT_RPATH dynamic
            section attribute of the binary if present and DT_RUNPATH
            attribute does not exist.  Use of DT_RPATH is deprecated.

       (2)  Using the environment variable LD_LIBRARY_PATH, unless the
            executable is being run in secure-execution mode (see
            below), in which case this variable is ignored.

       (3)  Using the directories specified in the DT_RUNPATH dynamic
            section attribute of the binary if present.  Such
            directories are searched only to find those objects required
            by DT_NEEDED (direct dependencies) entries and do not apply
            to those objects' children, which must themselves have their
            own DT_RUNPATH entries.  This is unlike DT_RPATH, which is
            applied to searches for all children in the dependency tree.

       (4)  From the cache file /etc/ld.so.cache, which contains a
            compiled list of candidate shared objects previously found
            in the augmented library path.  If, however, the binary was
            linked with the -z nodefaultlib linker option, shared
            objects in the default paths are skipped.  Shared objects
            installed in hardware capability directories (see below) are
            preferred to other shared objects.

       (5)  In the default path /lib, and then /usr/lib.  (On some
            64-bit architectures, the default paths for 64-bit shared
            objects are /lib64, and then /usr/lib64.)  If the binary was
            linked with the -z nodefaultlib linker option, this step is
            skipped.

man 1 ld
...
--enable-new-dtags
--disable-new-dtags
     This linker can create the new dynamic tags in ELF. But the older ELF systems
     may not understand them. If you specify --enable-new-dtags, the new dynamic tags
     will be created as needed and older dynamic tags will be omitted.  If you 
     specify --disable-new-dtags, no new dynamic tags will be created. By default, the 
     new dynamic tags are not created. Note that those options are only available for ELF systems.
...

readelf -d build/client | grep -E 'RUNPATH|RPATH'

echo "/usr/local/lib64" | sudo tee /etc/ld.so.conf.d/quictls.conf # 添加配置文件
sudo ldconfig # 刷新 ld.so.cache
openssl version # 现在能正常执行
# OpenSSL 3.1.4+quic 24 Oct 2023 (Library: OpenSSL 3.1.4+quic 24 Oct 2023)

gcc -g -Wall -Wextra -DDEBUG -pedantic -Wl,-rpath=/usr/local/lib64  -o build/client client.c connection.c quictls.c stream.c utils.c  \
        -L/usr/local/lib64  \ # 影响后面的-lssl -lcrypto, 使她们使用quictls而不是openssl的共享库
        -lssl -lcrypto \ # 使用前面-L指定目录找到的依赖libssl.so.81.3 libcrypto.so.81.3
        -lngtcp2 -lngtcp2_crypto_quictls

ld --verbose | grep SEARCH_DIR | tr -s ' ;' '\n'
# OR
ldconfig -v 2>/dev/null | grep '^/'