gistfile1.txt

import qbs 1.0
import qbs.Probes
import "utils.js" as Utils

Project {
    minimumQbsVersion: "1.6"

    property string name: 'seastar'
    CppApplication {
        name: project.name
        Probes.PkgConfigProbe {
            id: pkgConfig
            name: "seastar"
            libDirs: [
                project.sourceDirectory + "/../seastar/build/release"
            ]
        }
        files: 'sort.cpp'
        cpp.cxxFlags: Utils.clean(pkgConfig.cflags)
        cpp.staticLibraries: pkgConfig.libraries
        cpp.libraryPaths: pkgConfig.libraryPaths
        cpp.includePaths: project.sourceDirectory + "/../seastar"
        cpp.treatWarningsAsErrors:false
        cpp.cxxLanguageVersion:"c++14"
    }
}

gistfile2.txt

cmake_minimum_required (VERSION 3.1)
INCLUDE (FindPkgConfig)
set(CMAKE_PREFIX_PATH "${CMAKE_PREFIX_PATH}:${CMAKE_SOURCE_DIR}/../seastar/build/release/")
MESSAGE( STATUS "PKG_CONFIG_PATH:     " ${PKG_CONFIG_PATH} )


project (EXSORT)

pkg_search_module(SEASTAR REQUIRED Seastar)
include_directories(${SEASTAR_INCLUDE_DIRS})
link_directories(${SEASTAR_INCLUDE_DIRS})

target_link_libraries(sort ${SEASTAR_LIBRARIES})
target_include_directories(sort PUBLIC )
target_compile_options(sort PUBLIC ${SEASTAR_CFLAGS_OTHER})


add_executable (sort sort.cpp)

cmake_minimum_required (VERSION 3.1)
list(APPEND CMAKE_PREFIX_PATH "${CMAKE_SOURCE_DIR}/../seastar/build/release")
project (EXSORT)

set(PKG_CONFIG_USE_CMAKE_PREFIX_PATH ON)
include(FindPkgConfig)
pkg_search_module(Seastar REQUIRED seastar IMPORTED_TARGET)

add_executable (sort sort.cpp)
target_link_libraries(sort PkgConfig::Seastar)