feat(build): 汇编源一等公民 — .S/.s/.asm 进 sources,NASM 按目标推导 -f#220
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设计: .agents/docs/2026-07-17-asm-sources-and-general-build-capabilities-design.md (PR-A)
- .S/.s (GAS) 走 C 驱动的新 asm_object 规则(asm 安全旗标子集,无 -std/-O,
PIC/调试/工具链定位旗标保留);.asm (NASM) 走 nasm_object 规则,-f 由
Triple::nasm_format() 从目标三元组推导(elf64/win64/macho64/...,交叉零特判),
%include 经 -MD/-MQ 进 ninja deps 通道
- 默认 sources glob 扩为 src/**/*.{cppm,cpp,cc,c,S,s,asm};汇编对象名带全扩展
限定(foo.asm.o),同 stem 的 .c/.asm 兄弟不再撞对象
- 扩展名路由四处同改并单测锁住:scanner 跳模块扫描、plan 链接收集
(is_implementation_source)、ninja pick_rule、cdb(.asm 不进
compile_commands,clangd 读不懂;.S 以 cc + asm 旗标进)
- nasm 惰性解析(仅当计划含 .asm 单元):PATH → mcpp 沙箱 → xlings install,
版本 floor ≥2.16,不可得即硬失败,绝不静默跳过;非 x86 目标遇 .asm、
MSVC 工具链遇 .S 均硬报错并给出门控指引
- G8a: 源 glob 跟随目录软链接(递归栈祖先链防环 + 文件级 canonical 去重);
顺带修 path_matches_glob 用 fs::relative 会解析软链致匹配失效的问题
(改词法 lexically_relative)
- e2e 104(GAS 全链路+增量+build/test 双路径)/105(NASM/-f 推导/%include
依赖追踪/CDB 排除),run_all.sh 增 nasm capability;单测 35/35 过,
e2e 106 过(3 失败均为既有环境性:22/54/62)
This was referenced Jul 17, 2026
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概要
G1–G9 通用构建能力方案的 PR-A(共三个 PR,单版本 0.0.95,本 PR 不 bump 版本;版本与发布随 PR-C)。设计文档随本 PR 入库:
.agents/docs/2026-07-17-mcpp-feature-requests.md(需求清单 G1–G9).agents/docs/2026-07-17-asm-sources-and-general-build-capabilities-design.md(设计 + PR 拆分)内容(G1 + G7 收口 + G8a)
汇编源一等公民
.S/.s(GAS)→ 新asm_object规则(C 驱动,asm 安全旗标子集:无-std/-O,保留 PIC/-g/工具链定位旗标——hermetic 原则,绝不落宿主as).asm(NASM)→ 新nasm_object规则,-f由Triple::nasm_format()从目标三元组推导(elf64/win64/macho64/...,交叉构建零特判);%include经-MD/-MQ进 ninja depssrc/**/*.{cppm,cpp,cc,c,S,s,asm};汇编对象名带全扩展限定(foo.asm.o),同 stem 的.c/.asm兄弟不撞对象pick_rule、CDB(.asm不进compile_commands.json)-D/-U/-I子集(feature defines 因此对汇编生效)nasm 供给(G7 mcpp 侧)
.asm单元:PATH → mcpp 沙箱 →xlings install nasm;floor ≥2.16;不可得硬失败,绝不静默跳过.asm、MSVC 工具链遇.S均硬报错并给出门控指引G8a:glob 跟目录软链接
path_matches_glob用fs::relative(canonicalize)导致软链路径永不匹配的问题 →lexically_relative测试
Triple::nasm_format全矩阵、asm/nasm 规则 emit、asm 旗标过滤、CDB 排除、scanner 跳扫、软链 glob104_asm_sources_gas.sh(默认 glob→构建→运行→增量→build/test 双路径)、105_asm_sources_nasm.sh(-f推导、%include依赖追踪、CDB 排除);run_all.sh增nasmcapability~/.xlings/datagcc 路径等)/ 5 跳(平台性)后续
PR-B(声明式清单能力:features.sources / generated_files / cfg 条件 sources / per-glob flags)→ PR-C(build.mcpp 环境契约 + cross + 依赖包执行,bump 0.0.95 并发布)。