Addressed upstream with https://github.com/PDAL/PDAL/pull/5019

--- cmake/options.cmake.orig	2026-03-27 19:26:01
+++ cmake/options.cmake	2026-05-17 12:34:47
@@ -86,6 +86,8 @@
     "Choose if e57 support should be built" FALSE)
 add_feature_info("E57 plugin" BUILD_PLUGIN_E57
     "read/write data to and from e57 format")
+option(E57_WITH_CCACHE
+    "Build libE57Format with Ccache" OFF)
 
 option(BUILD_PLUGIN_ARROW
     "Choose if Arrow support should be built" FALSE)
--- plugins/e57/libE57Format/CMakeLists.txt.orig	2026-05-17 12:37:18
+++ plugins/e57/libE57Format/CMakeLists.txt	2026-05-17 12:39:26
@@ -206,8 +206,9 @@
 )
 
 # ccache
-# Turns on ccache if found
-include( ccache )
+if ( E57_WITH_CCACHE )
+    include( ccache )
+endif()
 
 # Formatting
 include( ClangFormat )