tdeioslave nfs: Add support for libtirpc

as a replacement for deprecated SunRPC from glibc >= 2.26
This resolves bug 2962

Signed-off-by: Fabio Rossi <rossi.f@inwind.it>

tdeioslave/ConfigureChecks.cmake

@@ -24,3 +24,21 @@ if( WITH_SASL )
     tde_message_fatal( "sasl2 are requested, but not found on your system" )
   endif( )
 endif( )
+
+# rpc/rpc.h, originally was shipped with glibc ...
+check_include_file( rpc/rpc.h HAVE_RPC_H )
+# ... but later might be not present (deprecated from 2.26)
+if( NOT HAVE_RPC_H )
+  pkg_search_module( TIRPC libtirpc )
+  if( NOT TIRPC_FOUND )
+    tde_message_fatal( "rpc/rpc.h is required, please check your glibc or libtirpc package" )
+  endif( )
+endif( )
+
+message( STATUS "Looking for rpcgen" )
+find_program( RPCGEN_BINARY rpcgen )
+if( RPCGEN_BINARY )
+  message( STATUS "Looking for rpcgen - ${RPCGEN_BINARY}" )
+else( RPCGEN_BINARY )
+  tde_message_fatal( "rpcgen is required, but not found on your system" )
+endif( RPCGEN_BINARY )

tdeioslave/nfs/CMakeLists.txt

@@ -15,6 +15,7 @@ include_directories(
   ${CMAKE_BINARY_DIR}
   ${TDE_INCLUDE_DIR}
   ${TQT_INCLUDE_DIRS}
+  ${TIRPC_INCLUDE_DIRS}
 )
 
 link_directories(
@@ -32,15 +33,15 @@ install( FILES nfs.protocol DESTINATION ${SERVICES_INSTALL_DIR} )
 set( target tdeio_nfs )
 
 add_custom_command( OUTPUT mount_xdr.c
-  COMMAND rpcgen -c -o mount_xdr.c ${CMAKE_CURRENT_SOURCE_DIR}/mount.x
+  COMMAND ${RPCGEN_BINARY} -c -o mount_xdr.c ${CMAKE_CURRENT_SOURCE_DIR}/mount.x
   DEPENDS mount.x )
 
 add_custom_command( OUTPUT nfs_prot_xdr.c
-  COMMAND rpcgen -c -o nfs_prot_xdr.c ${CMAKE_CURRENT_SOURCE_DIR}/nfs_prot.x
+  COMMAND ${RPCGEN_BINARY} -c -o nfs_prot_xdr.c ${CMAKE_CURRENT_SOURCE_DIR}/nfs_prot.x
   DEPENDS nfs_prot.x )
 
 tde_add_kpart( ${target} AUTOMOC
   SOURCES tdeio_nfs.cpp mount_xdr.c nfs_prot_xdr.c
-  LINK tdeio-shared
+  LINK tdeio-shared ${TIRPC_LIBRARIES}
   DESTINATION ${PLUGIN_INSTALL_DIR}
 )