From cbf6adc9d3224d8f7455f40568dd49c7586d1454 Mon Sep 17 00:00:00 2001
From: past-due <30942300+past-due@users.noreply.github.com>
Date: Mon, 19 Mar 2018 16:26:36 -0400
Subject: [paho-mqtt] Fix post-build validation failure when VCPKG_BUILD_TYPE
 is set

The portfile was creating empty directories (for the "other" build type) if `VCPKG_BUILD_TYPE` was specified.
---
 ports/paho-mqtt/portfile.cmake | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/ports/paho-mqtt/portfile.cmake b/ports/paho-mqtt/portfile.cmake
index 27f9c8243..3d0fc12e9 100644
--- a/ports/paho-mqtt/portfile.cmake
+++ b/ports/paho-mqtt/portfile.cmake
@@ -52,11 +52,15 @@ file(GLOB HEADERS "${SOURCE_PATH}/*/*.h")
 if(DLLS)
   file(INSTALL ${DLLS} DESTINATION ${CURRENT_PACKAGES_DIR}/bin)
 endif()
-file(INSTALL ${LIBS} DESTINATION ${CURRENT_PACKAGES_DIR}/lib)
+if(LIBS)
+  file(INSTALL ${LIBS} DESTINATION ${CURRENT_PACKAGES_DIR}/lib)
+endif()
 if(DEBUG_DLLS)
   file(INSTALL ${DEBUG_DLLS} DESTINATION ${CURRENT_PACKAGES_DIR}/debug/bin)
 endif()
-file(INSTALL ${DEBUG_LIBS} DESTINATION ${CURRENT_PACKAGES_DIR}/debug/lib)
+if(DEBUG_LIBS)
+  file(INSTALL ${DEBUG_LIBS} DESTINATION ${CURRENT_PACKAGES_DIR}/debug/lib)
+endif()
 file(INSTALL ${HEADERS} DESTINATION ${CURRENT_PACKAGES_DIR}/include)
 
 if(VCPKG_LIBRARY_LINKAGE STREQUAL static)
-- 
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