Index: rnp-v0.17.0/CMakeLists.txt
===================================================================
--- rnp-v0.17.0.orig/CMakeLists.txt
+++ rnp-v0.17.0/CMakeLists.txt
@@ -176,10 +176,8 @@ if (ENABLE_FUZZERS)
 endif()
 add_subdirectory(src/common)
 
-set(WITH_SEXP_CLI OFF)
-set(WITH_SEXP_TESTS OFF)
-set(CMAKE_INSTALL_DEFAULT_COMPONENT_NAME development)
-add_subdirectory(src/libsexp EXCLUDE_FROM_ALL)
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(SEXP REQUIRED sexp)
 
 add_subdirectory(src/lib)
 add_subdirectory(src/rnp)