cmake add pyston self host mode

CMakeLists.txt

@@ -21,6 +21,7 @@ option(ENABLE_GOLD "enable the gold linker" ON)
 option(ENABLE_GRWL "threading use GRWL" OFF)
 option(ENABLE_INTEL_JIT_EVENTS "LLVM support for Intel JIT Events API" OFF)
 option(ENABLE_LLVM_DEBUG "LLVM debug symbols" OFF)
+option(ENABLE_SELF_HOST "use pyston to test pyston" OFF)
 option(ENABLE_VALGRIND "pyston valgrind support" OFF)
 
 # automatically use ccache if found
@@ -43,6 +44,13 @@ if(ENABLE_GOLD)
   endif()
 endif()
 
+# pyston self host mode
+if(ENABLE_SELF_HOST)
+  set(PYTHON_EXE "pyston")
+else()
+  find_program(PYTHON_EXE python)
+endif()
+
 # initial clang flags (set here so they're used when building llvm)
 set(CLANG_FLAGS "-Qunused-arguments -fcolor-diagnostics" CACHE STRING "Clang specific C and CXX flags")
 if("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
@@ -155,13 +163,13 @@ add_custom_target(astcompare COMMAND ${CMAKE_SOURCE_DIR}/tools/astprint_test.sh
 
 # test
 enable_testing()
-add_test(NAME lint COMMAND python ${CMAKE_SOURCE_DIR}/tools/lint.py WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/src)
+add_test(NAME lint COMMAND ${PYTHON_EXE} ${CMAKE_SOURCE_DIR}/tools/lint.py WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/src)
 add_test(NAME check-format COMMAND ${CMAKE_SOURCE_DIR}/tools/check_format.sh ${LLVM_TOOLS_BINARY_DIR}/clang-format WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/src)
 add_test(NAME gc_unittest COMMAND gc_unittest)
 add_test(NAME analysis_unittest COMMAND analysis_unittest)
-add_test(NAME pyston_defaults COMMAND python ${CMAKE_SOURCE_DIR}/tools/tester.py -R ./pyston -j4 -k ${CMAKE_SOURCE_DIR}/test/tests)
-add_test(NAME pyston_max_compilation_tier COMMAND python ${CMAKE_SOURCE_DIR}/tools/tester.py -R ./pyston -j4 -a -O -k ${CMAKE_SOURCE_DIR}/test/tests)
-add_test(NAME pyston_experimental_pypa_parser COMMAND python ${CMAKE_SOURCE_DIR}/tools/tester.py -a -x -R ./pyston -j4 -a -n -k ${CMAKE_SOURCE_DIR}/test/tests)
+add_test(NAME pyston_defaults COMMAND ${PYTHON_EXE} ${CMAKE_SOURCE_DIR}/tools/tester.py -R ./pyston -j4 -k ${CMAKE_SOURCE_DIR}/test/tests)
+add_test(NAME pyston_max_compilation_tier COMMAND ${PYTHON_EXE} ${CMAKE_SOURCE_DIR}/tools/tester.py -R ./pyston -j4 -a -O -k ${CMAKE_SOURCE_DIR}/test/tests)
+add_test(NAME pyston_experimental_pypa_parser COMMAND ${PYTHON_EXE} ${CMAKE_SOURCE_DIR}/tools/tester.py -a -x -R ./pyston -j4 -a -n -k ${CMAKE_SOURCE_DIR}/test/tests)
 
 # format
 file(GLOB_RECURSE FORMAT_FILES ${CMAKE_SOURCE_DIR}/src/*.h ${CMAKE_SOURCE_DIR}/src/*.cpp)
@@ -169,7 +177,7 @@ add_custom_target(format ${LLVM_TOOLS_BINARY_DIR}/clang-format -style=file -i ${
 add_custom_target(check-format ${CMAKE_SOURCE_DIR}/tools/check_format.sh ${LLVM_TOOLS_BINARY_DIR}/clang-format DEPENDS clang-format WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/src)
 
 # lint
-add_custom_target(lint python ${CMAKE_SOURCE_DIR}/tools/lint.py WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/src)
+add_custom_target(lint ${PYTHON_EXE} ${CMAKE_SOURCE_DIR}/tools/lint.py WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/src)
 
 # check
 add_custom_target(check-pyston COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure DEPENDS pyston clang-format ext_cpython ext_pyston unittests)