Try to use rpath

Author: nikic

azure/apt.yml

@@ -61,5 +61,4 @@ steps:
       mv instantclient_*_* /opt/oracle/instantclient
       # Interferes with libldap2 headers.
       rm /opt/oracle/instantclient/sdk/include/ldap.h
-      echo "##vso[task.setvariable variable=LD_LIBRARY_PATH]/opt/oracle/instantclient:$LD_LIBRARY_PATH"
     displayName: 'Install Oracle Instant Client'

azure/configure.yml

@@ -68,5 +68,6 @@ steps:
         --with-oci8=shared,instantclient,/opt/oracle/instantclient \
         --enable-werror \
         --with-config-file-path=/etc \
-        --with-config-file-scan-dir=/etc/php.d
+        --with-config-file-scan-dir=/etc/php.d \
+        LIBS='-Wl,-rpath,/opt/oracle/instantclient'
   displayName: 'Configure Build'