mesonbuild/meson

Generated files not regenerated when the generator changes

Open

#2,960 创建于 2018年1月22日

在 GitHub 查看
 (12 评论) (0 反应) (0 负责人)Python (4,978 star) (1,465 fork)batch import
buggeneratorshelp wanted

描述

I have a bunch of files generated by a python script. When changing the gputop-oa-codegen.py script, files don't get regenerated. Is this expected?

oa_generator = generator(                                                          
  prog_python2,                                                                    
  arguments : ['@CURRENT_SOURCE_DIR@/../scripts/gputop-oa-codegen.py', '@INPUT@',  
               '--chipset', '@EXTRA_ARGS@', '--code', '@OUTPUT0@',                 
               '--header', '@OUTPUT1@'],                                           
  output : ['@BASENAME@.c', '@BASENAME@.h'],                                       
)                                                                                  
                                                                                   
oa_sources = []                                                                    
foreach hw : ['hsw', 'bdw', 'chv', 'sklgt2', 'sklgt3', 'sklgt4', 'bxt',            
              'kblgt2', 'kblgt3', 'glk', 'cflgt2', 'cflgt3', 'cnl']                
  _xml = '../gputop-data/oa-@0@.xml'.format(hw)                                    
  oa_sources += oa_generator.process(_xml, extra_args : hw)                        
endforeach                                                                         
                                                                                   
gputop_client_oa = static_library('gputop_client_oa', oa_sources,                              
                                  c_args : ['-Wno-unused-parameter', '-Wno-unused-function'],  
                                  dependencies : mesa_dep)

贡献者指南

技术栈
python
领域
build system
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-2 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Knowledge of Meson build systemUnderstanding of generator() in MesonPython
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
40
研究方向
The issue is that when the generator script (gputop oa codegen.py) changes, the output files are not regenerated. In Meson, custom generators have an 'input' argument but the script itself is typically passed as an argument and not tracked as a dependency. Investigate how Meson handles dependency tracking for generator scripts in the backend code (e.g., mesonbuild/backend/backends.py). Look at GitHub comments for any proposed solutions or workarounds. The fix may involve adding the script as an implicit dependency similar to how compilers are tracked.