pkg-config BUGFIX missing xxhash rependency

Fixes #2460

Author: michalvasko

CMakeLists.txt

@@ -414,6 +414,7 @@ target_link_libraries(yang ${PCRE2_LIBRARIES})
 find_package(XXHash)
 if(XXHASH_FOUND)
     add_definitions(-DLY_XXHASH_SUPPORT)
+    set(PC_XXHASH_LIB libxxhash)
     include_directories(${XXHASH_INCLUDE_DIR})
     target_link_libraries(yang ${XXHASH_LIBRARY})
     message(STATUS "Hash algorithm: xxhash")

libyang.pc.in

@@ -5,7 +5,7 @@ libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
 Name: @PROJECT_NAME@
 Description: @LIBYANG_DESCRIPTION@
 Version: @LIBYANG_VERSION@
-Requires.private: libpcre2-8
+Requires.private: libpcre2-8 @PC_XXHASH_LIB@
 Libs: -L${libdir} -lyang
 Libs.private: -lpcre2-8
 Cflags: -I${includedir}