vcpkg/ports/cyclonedds/idlc-generate.patch

diff --git a/cmake/Modules/Generate.cmake b/cmake/Modules/Generate.cmake
index 0ed67d63..9037fe05 100644
--- a/cmake/Modules/Generate.cmake
+++ b/cmake/Modules/Generate.cmake
@@ -157,11 +157,25 @@ function(IDLC_GENERATE_GENERIC)
     endforeach()
 
     list(APPEND _outputs ${_file_outputs})
-    add_custom_command(
-      OUTPUT   ${_file_outputs}
-      COMMAND  ${_idlc_executable}
-      ARGS     ${_language} ${IDLC_ARGS} ${IDLC_INCLUDE_DIRS} ${_file}
-      DEPENDS  ${_files} ${_depends})
+    if(APPLE)
+      add_custom_command(
+        OUTPUT   ${_file_outputs}
+        COMMAND  ${CMAKE_COMMAND}
+        ARGS     -E env "DYLD_LIBRARY_PATH=$<TARGET_FILE_DIR:${_idlc_executable}>/../../lib" $<TARGET_FILE:${_idlc_executable}> ${_language} ${IDLC_ARGS} ${IDLC_INCLUDE_DIRS} ${_file}
+        DEPENDS  ${_files} ${_depends})
+    elseif(UNIX)
+      add_custom_command(
+        OUTPUT   ${_file_outputs}
+        COMMAND  ${CMAKE_COMMAND}
+        ARGS     -E env "LD_LIBRARY_PATH=$<TARGET_FILE_DIR:${_idlc_executable}>/../../lib" $<TARGET_FILE:${_idlc_executable}> ${_language} ${IDLC_ARGS} ${IDLC_INCLUDE_DIRS} ${_file}
+        DEPENDS  ${_files} ${_depends})
+    else()
+      add_custom_command(
+        OUTPUT   ${_file_outputs}
+        COMMAND  ${_idlc_executable}
+        ARGS     ${_language} ${IDLC_ARGS} ${IDLC_INCLUDE_DIRS} ${_file}
+        DEPENDS  ${_files} ${_depends})
+    endif()
   endforeach()
 
   add_custom_target("${_target}_generate" DEPENDS "${_outputs}")