Update portfile.cmake (#8043)

Author: longhuan2018

ports/qscintilla/portfile.cmake

@@ -27,7 +27,7 @@ vcpkg_configure_qmake(
         DEFINES+=SCI_NAMESPACE
 )
 
-if(CMAKE_HOST_WIN32)
+if(VCPKG_TARGET_IS_WINDOWS)
     vcpkg_build_qmake(
         RELEASE_TARGETS release
         DEBUG_TARGETS debug
@@ -39,15 +39,15 @@ endif()
 file(GLOB HEADER_FILES ${SOURCE_PATH}/Qt4Qt5/Qsci/*)
 file(COPY ${HEADER_FILES} DESTINATION ${CURRENT_PACKAGES_DIR}/include/Qsci)
 
-if(CMAKE_HOST_WIN32)
+if(VCPKG_TARGET_IS_WINDOWS)
     configure_file(${RELEASE_DIR}/release/qscintilla2_qt5.lib ${CURRENT_PACKAGES_DIR}/lib/qscintilla2.lib COPYONLY)
     configure_file(${DEBUG_DIR}/debug/qscintilla2_qt5.lib ${CURRENT_PACKAGES_DIR}/debug/lib/qscintilla2.lib COPYONLY)
 
     if(VCPKG_LIBRARY_LINKAGE STREQUAL dynamic)
         file(COPY ${RELEASE_DIR}/release/qscintilla2_qt5.dll DESTINATION ${CURRENT_PACKAGES_DIR}/bin)
         file(COPY ${DEBUG_DIR}/debug/qscintilla2_qt5.dll DESTINATION ${CURRENT_PACKAGES_DIR}/debug/bin)
     endif()
-elseif(CMAKE_HOST_APPLE)
+elseif(VCPKG_TARGET_IS_LINUX OR VCPKG_TARGET_IS_OSX)
     configure_file(${RELEASE_DIR}/libqscintilla2_qt5.a ${CURRENT_PACKAGES_DIR}/lib/libqscintilla2.a COPYONLY)
     configure_file(${DEBUG_DIR}/libqscintilla2_qt5.a ${CURRENT_PACKAGES_DIR}/debug/lib/libqscintilla2.a COPYONLY)
 endif()