libarchive: Build with iconv to handle entry path encoding

Issue: #26903

Source/Modules/CMakeBuildUtilities.cmake

@@ -294,7 +294,11 @@ else()
   set(ENABLE_WIN32_XMLLITE OFF)
   set(ENABLE_XATTR OFF)
   set(ENABLE_ACL OFF)
-  set(ENABLE_ICONV OFF)
+  if(WIN32)
+    set(ENABLE_ICONV OFF)
+  else()
+    set(ENABLE_ICONV ON)
+  endif()
   set(ENABLE_TEST OFF)
   set(ENABLE_COVERAGE OFF)
   set(ENABLE_INSTALL OFF)

Utilities/cmlibarchive/CMakeLists.txt

@@ -1200,6 +1200,13 @@ IF(ENABLE_ICONV)
       ENDIF(HAVE_ICONV)
     ENDIF(NOT HAVE_ICONV AND LIBICONV_PATH)
   ENDIF(ICONV_INCLUDE_DIR)
+
+  # XXX(cmake): iconv is required on non-Windows platforms
+  if(NOT HAVE_ICONV AND NOT WIN32)
+    message(FATAL_ERROR "iconv is required, but was not found.")
+  endif()
+  # XXX(cmake): end
+
   #
   # Find locale_charset() for libiconv.
   #