Issues

• Upgrade replays cached build.ninja containing the removed old MCPP executable path and fails with CreateProcess

  mcpp-community/mcpp#757 · Filter by author julixian opened on Oct 1, 2026

• Incremental build ignores .ixx host-module edits unless consumer declares the extension, causing a dead-entry warning

  mcpp-community/mcpp#756 · Filter by author julixian opened on Oct 1, 2026

• GCC 16.1 internal compiler error in add_imported_namespace when mcpp.build.prepare gains an interface unit in its import chain

  upstream-bug
  mcpp-community/mcpp#721 · Filter by author speak-agent opened on Sep 27, 2026

• 汇总:2026-09-20 全量 open issue 核验 —— 关闭十条、三条实测仍复现、其余逐条读数

  mcpp-community/mcpp#677 · Filter by author speak-agent opened on Sep 20, 2026
  1

• [c-abi] Windows + presents=posix: __unix__ is defined but compat.* still fails (18 packages); engine vs. upstream code assumption

  mcpp-community/mcpp#674 · Filter by author Sunrisepeak opened on Sep 18, 2026

• ci-macos xcode-27: ld64.lld cannot parse arm64e.x1 in either available SDK (upstream, tracked)

  mcpp-community/mcpp#669 · Filter by author Sunrisepeak opened on Sep 18, 2026
  1

• GCC self-host: internal compiler error importing mcpp.targetside from a new consumer, under parallel build

  mcpp-community/mcpp#667 · Filter by author Sunrisepeak opened on Sep 17, 2026

• Clang-built mcpp SIGSEGVs in ELF runtime inspection (validate_changed_artifacts); GCC-built does not

  mcpp-community/mcpp#666 · Filter by author Sunrisepeak opened on Sep 17, 2026
  1

• clang 23.1.0: MSVC STL std module fails with reference to 'align_val_t' is ambiguous (fixed in 23.1.1, llvm/llvm-project#218152)

  upstream-bug
  mcpp-community/mcpp#640 · Filter by author Sunrisepeak opened on Sep 14, 2026

• clang 22: a builtin first looked up in a module partition's purview becomes module-owned; importing it beside a GMF use is 'ambiguous' (macOS assert / __builtin_expect)

  upstream-bug
  mcpp-community/mcpp#632 · Filter by author Sunrisepeak opened on Sep 13, 2026

• mcpp run: a script artefact whose interpreter is missing fails without naming the remedy

  mcpp-community/mcpp#621 · Filter by author Sunrisepeak opened on Sep 11, 2026

• 问题备注

  mcpp-community/mcpp#611 · Filter by author Sunrisepeak opened on Sep 11, 2026
  1

• 备忘:2026-09-04 生态批次之后仍未闭合的四条(armv7a 无 C 库/板级包、riscv32 无后端、ninja 空转未定因、armv7a 无 preemption)

  mcpp-community/mcpp#558 · Filter by author Sunrisepeak opened on Sep 4, 2026

• 宿主 -L 链上的库与运行期加载的库可以是两份不同构建,而构建期一言不发

  mcpp-community/mcpp#537 · Filter by author Sunrisepeak opened on Aug 30, 2026

• host tool 链接 shared 依赖后无法运行:.so 未被 stage 到工具旁边(且会被 subos 同名库悄悄顶上)

  mcpp-community/mcpp#535 · Filter by author Sunrisepeak opened on Aug 30, 2026

• [Bug & RFC] 系统工具链 build.mcpp 执行失败缺陷、原生宿主模式与工作区继承规范提案

  bugenhancement
  mcpp-community/mcpp#527 · Filter by author elel-code opened on Aug 29, 2026
  2

  

• 包的身份是 (名字, 版本)，而描述文件能在版本不变时改变它的产物和链接面 —— index update 不重装，报错指向无关目标

  mcpp-community/mcpp#524 · Filter by author Sunrisepeak opened on Aug 28, 2026

• ci(fresh-install): tumbleweed 腿在 zypper 刷新失败时继续安装,于是红在「找不到 binutils」而不是「刷新失败」

  mcpp-community/mcpp#523 · Filter by author Sunrisepeak opened on Aug 28, 2026

• feat: xpkg 的 feature 应该能带 ldflags / include_dirs —— 否则「拉一个库的 feature」表达不出来

  mcpp-community/mcpp#522 · Filter by author Sunrisepeak opened on Aug 28, 2026

• Windows: 进程 ACP 之外的路径,mcpp 只能跳过而不能构建

  mcpp-community/mcpp#518 · Filter by author Sunrisepeak opened on Aug 27, 2026

• feat/RFC: [system_deps] —— 经 pkg-config 集成宿主系统库

  mcpp-community/mcpp#493 · Filter by author wellwei opened on Aug 23, 2026
  1

• Linux: private glibc ld.so.cache is not relocated, so gcc probe fails with /etc/ld.so.preload

  mcpp-community/mcpp#484 · Filter by author ZheFeng7110 opened on Aug 22, 2026
  

• bench - 构建性能测试

  documentationenhancementhelp wanted
  mcpp-community/mcpp#428 · Filter by author Sunrisepeak opened on Aug 15, 2026
  1

  

• clang 22: full BMI from --precompile poisons importers; -c <reduced>.pcm silently emits an object with no definitions

  upstream-bug
  mcpp-community/mcpp#424 · Filter by author Sunrisepeak opened on Aug 15, 2026

• 扫描器 M1 限制：条件 import 与头单元在移植真实工程时是硬门槛（附一处诊断透传）

  mcpp-community/mcpp#421 · Filter by author Sunrisepeak opened on Aug 11, 2026
  3