使用CMake+Ninja使用GIT下载依赖项

Using CMake + Ninja to download dependencies using GIT

本文关键字：使用 依赖 GIT CMake+Ninja 下载      更新时间：2023-10-16

我有一个ExternalProject依赖项，它在构建过程中被克隆（使用git）。这一切都适用于CMake+Make。

mkdir build && cd build; 
cmake ..
make

当我键入make时，它使用git正确地克隆和构建了库。

然而，当我使用忍者生成器时：

mkdir build && cd build; 
cmake -GNinja ..
ninja

我得到以下错误：

$ cmake -GNinja ..                                                                                                                                                                                                                                                   -- The C compiler identification is AppleClang 6.0.0.6000054
-- The CXX compiler identification is AppleClang 6.0.0.6000054
-- Check for working C compiler using: Ninja
-- Check for working C compiler using: Ninja -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler using: Ninja
-- Check for working CXX compiler using: Ninja -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Boost version: 1.56.0
-- Found the following Boost libraries:
--   unit_test_framework
-- Found Git: /usr/local/bin/git (found version "2.1.2")
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/carneiro/src/gamgee/build


$ ninja
ninja: error: 'contrib/htslib-prefix/src/htslib/libhts.a', needed by 'test/gamgee_test', missing and no known rule to make it

Is git downloading of external projects not supported by the cmake+ninja combo?

Turns out if you do a clean before building, it all works and ninja does download my dependencies correctly.

So the workflow looks like this:

mkdir build && cd build
cmake -G Ninja ..
ninja clean  # if you don't do this, it will not download Externalproject dependencies
ninja

忍者生成器中一定有某种bug，但我现在对这个工作流程很满意。

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