[cmake] use detected ccache executable (qgis#62726)

Author: 3nids

CMakeLists.txt

@@ -108,12 +108,12 @@ endif()
 # Configure CCache if available
 option(USE_CCACHE "Use ccache" ON)
 if (USE_CCACHE)
-  find_program(CCACHE_FOUND ccache)
-  if(CCACHE_FOUND)
+  find_program(CCACHE_EXE ccache)
+  if(CCACHE_EXE)
     message(STATUS "ccache found")
-    execute_process(COMMAND ccache --help OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE CCACHE_HELP)
-    execute_process(COMMAND ccache --get-config sloppiness OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE CCACHE_SLOPPINESS)
-    execute_process(COMMAND ccache --get-config compiler_type OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE CCACHE_COMPILER_TYPE)
+    execute_process(COMMAND ${CCACHE_EXE} --help OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE CCACHE_HELP)
+    execute_process(COMMAND ${CCACHE_EXE} --get-config sloppiness OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE CCACHE_SLOPPINESS)
+    execute_process(COMMAND ${CCACHE_EXE} --get-config compiler_type OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE CCACHE_COMPILER_TYPE)
     string(FIND "${CCACHE_SLOPPINESS}" "pch_defines" fpch_defines_found_index)
     string(FIND "${CCACHE_SLOPPINESS}" "time_macros" time_macros_found_index)
     string(FIND "${CCACHE_SLOPPINESS}" "include_file_mtime" include_file_mtime_found_index)
@@ -156,7 +156,7 @@ if (USE_CCACHE)
     endif()
     set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_INVOCATION_COMMAND}")
     set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK "${CCACHE_INVOCATION_COMMAND}")
-  endif(CCACHE_FOUND)
+  endif(CCACHE_EXE)
 endif(USE_CCACHE)
 
 if (USE_CCACHE AND MSVC)