added ccache for cmake (not work)

.gitignore

@@ -44,3 +44,18 @@ CMakeLists.txt.user*
 
 build/*
 *.user*
+
+#cmake
+
+CMakeLists.txt.user
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+_deps
+*_autogen

cmake/QuasarAppOut.cmake

@@ -19,4 +19,4 @@ ENDIF(CMAKE_BUILD_TYPE EQUAL Release)
 
 message(QUASARAPP_LIB_OUTPUT_DIR = ${QUASARAPP_LIB_OUTPUT_DIR})
 
-
+include(cmake/ccache.cmake)

cmake/ccache.cmake

@@ -0,0 +1,28 @@
+#
+# Copyright (C) 2018-2019 QuasarApp.
+# Distributed under the lgplv3 software license, see the accompanying
+# Everyone is permitted to copy and distribute verbatim copies
+# of this license document, but changing it is not allowed.
+#
+
+IF(NOT CCACHE_INCLUDE)
+    SET(CCACHE_INCLUDE True)
+    IF(CMAKE_HOST_SYSTEM_NAME EQUAL Linux)
+
+        execute_process(COMMAND "which" "ccache"
+                        WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+                        RESULT_VARIABLE which_result
+                        OUTPUT_VARIABLE BIN)
+        
+        IF (${BIN} STREQUAL "")
+            message("ccache disabled for ${PROJECT_NAME}")
+        ELSE()
+            SET(CMAKE_CXX_COMPILER "${BIN} ${CMAKE_CXX_COMPILER}")
+            message("ccache enabled for ${CMAKE_CXX_COMPILER}")
+
+        ENDIF (${BIN} STREQUAL "")
+
+    ENDIF(CMAKE_HOST_SYSTEM_NAME EQUAL Linux)
+
+ENDIF(NOT CCACHE_INCLUDE)
+