pkg-config can not resolve dependencies · protocolbuffers/protobuf#24610

(2 评论) (0 反应) (0 负责人)C++ (71,223 star) (16,128 fork)batch import

cmakehelp wanted

描述

What version of protobuf and what language are you using? 33.0 Language: C++

What operating system (Linux, Windows, ...) and version? Linux (Ubunut)

What runtime / compiler are you using (e.g., python version or gcc version) clang 21

What did you do?

build from source using CMake and install to any DIR
set PKG_CONFIG_PATH to the DIR/lib/pkgconfig
execute pkg-config protobuf --cflags or pkgconf protobuf --cflags
Additional step is to execute pkgconf protobuf --digraph

What did you expect to see The output should be there within seconds The dependencies graphs should have a sane size

What did you see instead? pkg-config/pkgconf got stuck for minutes (I've been waiting for around 15) The graph is insanely large (>2 millions nodes)

I'm honestly not an expert with any of pkg-config or pkgconf, but to me it looks like some kind of cyclic dependencies somewhere in CMake files

贡献者指南

技术栈: cpp
领域: build systemtooling
议题类型: bug
难度: 3
预计时间: 1-3 hours
活动状态: fresh
清晰度: mostly clear
前置要求: familiarity with CMake
新手友好度: 30
研究方向: Investigate the CMake configuration files in the protobuf repository, specifically the .cmake files that generate pkg config (.pc) files. Look for potential cyclic dependencies or overly broad dependency lists that cause pkg config to generate an enormous dependency graph. Check the generated protobuf.pc file and the CMakeLists.txt that defines the library dependencies. Review any recent changes to the CMake configuration that might have introduced the cycle.