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cmake: Make Python 2 bytecode pre-compilation optional 

This affects performance while preserving compatibility.

Ref: #1074
This commit is contained in:
Zhaofeng Li 2023-04-23 12:08:01 -06:00
parent 759f5479a6
commit 1aa60261f6
2 changed files with 24 additions and 1 deletions
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22
CMakeLists.txt
View File

@ -30,7 +30,6 @@ endif(NOT DEFINED CMAKE_CXX_COMPILER)
option(DARLING_NO_CCACHE "Disable ccache usage" OFF)
find_package(Python2 REQUIRED COMPONENTS Interpreter)
find_program(CCACHE_PROGRAM ccache)
if(CCACHE_PROGRAM AND NOT DARLING_NO_CCACHE)
set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_PROGRAM}")
@ -110,6 +109,27 @@ option(ENABLE_TESTS "Install in-prefix unit tests" OFF)
option(REGENERATE_SDK "Regenerate Header Files For Open Source SDK" OFF)
option(ADDITIONAL_PACKAGES "Include additional pacakges not included by default in a standard macOS installation" OFF)
set(COMPILE_PY2_BYTECODE AUTO CACHE STRING "Pre-compile bytecode for Python 2 packages")
set_property(CACHE COMPILE_PY2_BYTECODE PROPERTY STRINGS AUTO ON OFF)
string(TOLOWER "${COMPILE_PY2_BYTECODE}" COMPILE_PY2_BYTECODE)
if (COMPILE_PY2_BYTECODE STREQUAL "auto")
find_package(Python2 QUIET COMPONENTS Interpreter)
if (Python2_Interpreter_FOUND)
set(COMPILE_PY2_BYTECODE ON)
message("Found Python 2; enabling pre-compilation of Python bytecode")
else()
set(COMPILE_PY2_BYTECODE OFF)
message("Python 2 not available; bytecode compilation is disabled")
endif (Python2_Interpreter_FOUND)
endif (COMPILE_PY2_BYTECODE STREQUAL "auto")
if (COMPILE_PY2_BYTECODE)
find_package(Python2 REQUIRED COMPONENTS Interpreter)
endif (COMPILE_PY2_BYTECODE)
set(ENABLE_METAL AUTO CACHE STRING "Build Darling with Metal support")
set_property(CACHE ENABLE_METAL PROPERTY STRINGS AUTO ON OFF)

3
cmake/pyc.cmake
View File

@ -4,6 +4,7 @@ function(pyc target_name)
cmake_parse_arguments(PYC "" "DESTINATION" "SOURCES" ${ARGN})
set(generated_files "")
if (COMPILE_PY2_BYTECODE)
foreach(pyfile ${PYC_SOURCES})
STRING(REGEX REPLACE "^${CMAKE_CURRENT_SOURCE_DIR}" "" pyfile_rel ${pyfile})
@ -23,5 +24,7 @@ function(pyc target_name)
endforeach(pyfile)
add_custom_target("${target_name}" ALL DEPENDS ${generated_files})
endif (COMPILE_PY2_BYTECODE)
endfunction(pyc)