Disable use of ccache.
--- CMakeLists.txt.orig	2023-02-26 21:24:51.000000000 -0600
+++ CMakeLists.txt	2023-02-26 21:26:15.000000000 -0600
@@ -30,7 +30,6 @@
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 set(CMAKE_MACOSX_RPATH 1)
 
-find_program(CCACHE_PROGRAM ccache)
 if(CCACHE_PROGRAM)
   set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_PROGRAM}")
 else()