[amdsmi] Add include dirs for libdrm. (#2504)

This has started failing on various developer build systems. Looking at it, it is not precisely clear how this ever worked given that nothing appears to be adding the DRM include dirs.

I'd prefer that we remove this delay loading (at least for TheRock builds where it is never needed), but in the meantime, this does fix the issue and is verified on an affected system.

Fixes https://github.com/ROCm/TheRock/issues/2744

projects/amdsmi/CMakeLists.txt

@@ -149,11 +149,16 @@ pkg_check_modules(DRM REQUIRED IMPORTED_TARGET libdrm)
 pkg_check_modules(DRM_AMDGPU REQUIRED IMPORTED_TARGET libdrm_amdgpu)
 
 # Configuration
-function(get_imported_soname target out_var)
-    get_target_property(link_libs ${target} INTERFACE_LINK_LIBRARIES)
-    set(result)
+function(get_imported_target_info target out_soname out_include_dirs)
+    # Resolve include directories.
+    get_target_property(include_dirs "${target}" INTERFACE_INCLUDE_DIRECTORIES)
+    set("${out_include_dirs}" "${include_dirs}" PARENT_SCOPE)
+
+    # Resolve the soname of the link library so that it can be opened with dlopen.
+    get_target_property(link_libs "${target}" INTERFACE_LINK_LIBRARIES)
+    set(soname)
     foreach(link_lib ${link_libs})
-        if(result)
+        if(soname)
             message(FATAL_ERROR "Target ${target} has multiple link libraries: ${link_libs}")
         endif()
         execute_process(
@@ -169,18 +174,18 @@ function(get_imported_soname target out_var)
             else()
                 message(FATAL_ERROR "Could not find SONAME in objdump output for ${link_lib}")
             endif()
-            set(result "${SONAME_OF_MY_PKG}")
+            set(soname "${SONAME_OF_MY_PKG}")
         else()
             message(FATAL_ERROR "objdump failed for ${link_lib}")
         endif()
     endforeach()
-    if(NOT result)
+    if(NOT soname)
         message(FATAL_ERROR "Could not find SONAME for target ${target} libs: ${link_libs}")
     endif()
-    set("${out_var}" "${result}" PARENT_SCOPE)
+    set("${out_soname}" "${soname}" PARENT_SCOPE)
 endfunction()
 
-get_imported_soname(PkgConfig::DRM_AMDGPU LIBDRM_AMDGPU_SONAME)
+get_imported_target_info(PkgConfig::DRM_AMDGPU LIBDRM_AMDGPU_SONAME LIBDRM_AMDGPU_INCLUDES)
 configure_file(
     "${CMAKE_CURRENT_SOURCE_DIR}/include/config/amd_smi_config.h.in"
     "${CMAKE_CURRENT_BINARY_DIR}/include/config/amd_smi_config.h"
@@ -261,6 +266,7 @@ include_directories(
     ${CMAKE_CURRENT_SOURCE_DIR}/third_party/shared_mutex
     ${CMAKE_CURRENT_SOURCE_DIR}/include/amd_smi
     ${ESMI_INC_DIR}
+    ${LIBDRM_AMDGPU_INCLUDES}
 )
 
 set(CMN_SRC_LIST