Make sure build works for Emscripten

CMakeLists.txt

@@ -352,18 +352,20 @@ configure_package_config_file(
     INSTALL_DESTINATION cmake
 )
 
-install(TARGETS slang EXPORT SlangExportTarget)
-
-install(
-    EXPORT SlangExportTarget
-    FILE ${PROJECT_NAME}Targets.cmake
-    NAMESPACE ${PROJECT_NAME}::
-    DESTINATION cmake
-)
+if (NOT CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
+  install(TARGETS slang EXPORT SlangExportTarget)
+  install(
+      EXPORT SlangExportTarget
+      FILE ${PROJECT_NAME}Targets.cmake
+      NAMESPACE ${PROJECT_NAME}::
+      DESTINATION cmake
+  )
+endif()
 
 install(
     FILES
         "${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
         "${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
     DESTINATION cmake
 )
+

cmake/SlangConfig.cmake.in

@@ -1,6 +1,20 @@
 
 @PACKAGE_INIT@
 
-include("${CMAKE_CURRENT_LIST_DIR}/slangTargets.cmake")
-check_required_components("slang")
+if (NOT CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
+  include("${CMAKE_CURRENT_LIST_DIR}/slangTargets.cmake")
+  check_required_components("slang")
+endif()
+
+if(@SLANG_ENABLE_SLANGC@)
+
+  find_program(SLANGC_EXECUTABLE "slangc" HINTS ENV PATH "${PACKAGE_PREFIX_DIR}/bin")
+
+  if (NOT SLANGC_EXECUTABLE)
+      message(STATUS "slangc executable not found; ensure it is available in your PATH.")
+  endif()
+
+  set(SLANG_EXECUTABLE ${SLANGC_EXECUTABLE} CACHE STRING "Path to the slangc executable")
+
+endif()