Bake RPATH into OpenSSL build so binaries self-locate libssl/libcrypto

Adds -Wl,-rpath flags for both lib and lib64 to OPENSSL_LDFLAGS default, and
canonicalizes OPENSSL_INSTALL_DIR with realpath -m to avoid embedding a '..'
segment in the baked rpath. The OpenSSL CLI binary (openssl-install/bin/openssl)
now finds its sibling libssl/libcrypto without depending on LD_LIBRARY_PATH or
on env-setup having been sourced. Callers passing OPENSSL_LDFLAGS still override
the default.

Author: aidangarske

scripts/utils-openssl.sh

@@ -28,13 +28,13 @@ source ${SCRIPT_DIR}/utils-general.sh
 OPENSSL_GIT_URL="https://github.com/openssl/openssl.git"
 OPENSSL_TAG=${OPENSSL_TAG:-"openssl-3.5.4"}
 OPENSSL_SOURCE_DIR=${SCRIPT_DIR}/../openssl-source
-OPENSSL_INSTALL_DIR=${SCRIPT_DIR}/../openssl-install
+OPENSSL_INSTALL_DIR=$(realpath -m "${SCRIPT_DIR}/../openssl-install")
 OPENSSL_BIN=${OPENSSL_INSTALL_DIR}/bin/openssl
 OPENSSL_TEST=${OPENSSL_SOURCE_DIR}/test
 OPENSSL_LIB_DIRS="${OPENSSL_INSTALL_DIR}/lib:${OPENSSL_INSTALL_DIR}/lib64"
 OPENSSL_CFLAGS=${OPENSSL_CFLAGS:-""}
 OPENSSL_CXXFLAGS=${OPENSSL_CXXFLAGS:-""}
-OPENSSL_LDFLAGS=${OPENSSL_LDFLAGS:-""}
+OPENSSL_LDFLAGS=${OPENSSL_LDFLAGS:-"-Wl,-rpath,${OPENSSL_INSTALL_DIR}/lib -Wl,-rpath,${OPENSSL_INSTALL_DIR}/lib64"}
 
 NUMCPU=${NUMCPU:-8}
 WOLFPROV_DEBUG=${WOLFPROV_DEBUG:-0}