Fix RPATH on autoschedulers

packaging/CMakeLists.txt

@@ -17,6 +17,25 @@ set(Halide_INSTALL_PLUGINDIR "${CMAKE_INSTALL_LIBDIR}"
 set(Halide_INSTALL_TOOLSDIR "${CMAKE_INSTALL_DATADIR}/tools"
     CACHE STRING "Path to Halide build-time tools and sources")
 
+##
+# RPATH patching helper
+##
+
+function(_Halide_compute_rpath)
+    cmake_parse_arguments(PARSE_ARGV 0 ARG "" "ORIGIN_DIR;LIB_DIR" "TARGETS")
+    if (APPLE)
+        set(rbase @loader_path)
+    else ()
+        set(rbase $ORIGIN)
+    endif ()
+
+    file(RELATIVE_PATH lib_dir
+         ${CMAKE_CURRENT_BINARY_DIR}/${ARG_ORIGIN_DIR}
+         ${CMAKE_CURRENT_BINARY_DIR}/${ARG_LIB_DIR})
+
+    set_target_properties(${ARG_TARGETS} PROPERTIES INSTALL_RPATH "${rbase};${rbase}/${lib_dir}")
+endfunction()
+
 ##
 # Main library exports
 ##
@@ -30,10 +49,20 @@ install(TARGETS Halide Halide_Generator Halide_GenGen
         FILE_SET HEADERS COMPONENT Halide_Development)
 
 if (WITH_AUTOSCHEDULERS)
-    install(TARGETS Halide_Adams2019 Halide_Li2018 Halide_Mullapudi2016 Halide_Anderson2021
+    set(autoschedulers Halide_Adams2019 Halide_Li2018 Halide_Mullapudi2016 Halide_Anderson2021)
+
+    install(TARGETS ${autoschedulers}
             EXPORT Halide_Interfaces
             LIBRARY DESTINATION ${Halide_INSTALL_PLUGINDIR} COMPONENT Halide_Runtime
             NAMELINK_COMPONENT Halide_Development)
+
+    if (NOT CMAKE_INSTALL_RPATH)
+        _Halide_compute_rpath(
+            TARGETS ${autoschedulers}
+            ORIGIN_DIR "${Halide_INSTALL_PLUGINDIR}"
+            LIB_DIR "${CMAKE_INSTALL_LIBDIR}"
+        )
+    endif ()
 endif ()
 
 ##
@@ -75,21 +104,6 @@ if (WITH_AUTOSCHEDULERS AND WITH_UTILS)
     )
 endif ()
 
-function(_Halide_compute_rpath)
-    cmake_parse_arguments(PARSE_ARGV 0 ARG "" "ORIGIN_DIR;LIB_DIR" "TARGETS")
-    if (APPLE)
-        set(rbase @loader_path)
-    else ()
-        set(rbase $ORIGIN)
-    endif ()
-
-    file(RELATIVE_PATH lib_dir
-         ${CMAKE_CURRENT_BINARY_DIR}/${ARG_ORIGIN_DIR}
-         ${CMAKE_CURRENT_BINARY_DIR}/${ARG_LIB_DIR})
-
-    set_target_properties(${ARG_TARGETS} PROPERTIES INSTALL_RPATH "${rbase};${rbase}/${lib_dir}")
-endfunction()
-
 if (NOT CMAKE_INSTALL_RPATH)
     _Halide_compute_rpath(
         TARGETS ${utils}