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CMake utilities addressing configuration management and dependency hell mitigation

License: MIT License

CMake 100.00%

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cmake_utilities's Issues

Make parsing of dependency files robust against versioning

Proposal: Add Version: v1.0.0 at the top of each dependencies.txt and make it mandatory, i.e. bail out if missing.

Pure CMake approach

This is a demo that handles dependencies purely in CMake by reading dependencies.txt files from the root directory of a project (and recursively for all listed dependencies). It only requires git and a non-ancient CMake version (> 3.19) to be installed.

The dependencies.txt format is repo-uri revision [subdirectory] with one dependency per line. revision can be anything that can be checked out by git. subdirectory is optional in case the dependencies.txt or CMakeLists.txt file are not in the git root.

The RepoMan module can be either included in CMake projects or be called by its name on the command line inside a non-CMake project. The demo projects already include it, but it can also be called via command line while within any project directory. The only difference is that the latter will not configure/generate a project.

repoman.zip

Summary

Not sure if this is a bug. FetchContent allows one to declare private names for dependencies (please note the lowercase catch2):

FetchContent(catch2 GIT_REPOSITORY https://github.com/catchorg/Catch2 GIT_TAG v2.x)

But it seems that the directory population uses the original uppercase name. To my surprise the reference to the _SOURCE_DIR must use the original upper case name, i.e.

list(APPEND CMAKE_MODULE_PATH ${Catch2_SOURCE_DIR}/contrib)

How to reproduce

Use the testsuite in https://github.com/dep-heaven/tool_1:

git clone https://github.com/dep-heaven/tool_1
cd tool_1/
mkdir build
cd build/
cmake ..

Output

...
WARNING! Something is still wrong here!
   RepoMan should populate selected name, not original name
==> Toplevel: catch2_SOURCE_DIR = ''
==> Toplevel: Catch2_SOURCE_DIR = '/home/markus/PROJECT/GARBAGE/tool_1/ws/catch2'
==> Toplevel: lib_A_SOURCE_DIR = '/home/markus/PROJECT/GARBAGE/tool_1/ws/lib_A'
...

Dependency target not found

How to reproduce

Use the testsuite in https://github.com/dep-heaven/tool_1:

git clone https://github.com/dep-heaven/tool_1
cd tool_1/
mkdir build
cd build/
cmake ..

Output

Cloning into 'tool_1'...
remote: Enumerating objects: 33, done.
remote: Counting objects: 100% (33/33), done.
remote: Compressing objects: 100% (25/25), done.
remote: Total 33 (delta 9), reused 25 (delta 5), pack-reused 0
Receiving objects: 100% (33/33), 8.45 KiB | 577.00 KiB/s, done.
Resolving deltas: 100% (9/9), done.
-- The CXX compiler identification is GNU 11.4.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Resolving dependencies of project /home/markus/PROJECT/GARBAGE/tool_1
-- Checking dependency 'lib_A': https://github.com/dep-heaven/lib_A @ master-yoda
-- Initializing in '/home/markus/PROJECT/GARBAGE/tool_1/ws/lib_A'
-- Checking dependency 'lib_B': https://github.com/dep-heaven/lib_B @ master-yoda
-- Initializing in '/home/markus/PROJECT/GARBAGE/tool_1/ws/lib_B'
-- Checking dependency 'libFreeAssange': https://github.com/dep-heaven/libFreeAssange @ belmarsh
-- Initializing in '/home/markus/PROJECT/GARBAGE/tool_1/ws/libFreeAssange'
-- Checking dependency 'catch2': https://github.com/catchorg/Catch2 @ v2.x
-- Initializing in '/home/markus/PROJECT/GARBAGE/tool_1/ws/catch2'
-- Checking dependency 'fmt': https://github.com/fmtlib/fmt @ master
-- Initializing in '/home/markus/PROJECT/GARBAGE/tool_1/ws/fmt'
-- The C compiler identification is GNU 12.3.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Version: 10.1.1
-- Build type: 
WARNING! Something is still wrong here!
   RepoMan should populate selected name, not original name
==> Toplevel: catch2_SOURCE_DIR = ''
==> Toplevel: Catch2_SOURCE_DIR = '/home/markus/PROJECT/GARBAGE/tool_1/ws/catch2'
==> Toplevel: lib_A_SOURCE_DIR = '/home/markus/PROJECT/GARBAGE/tool_1/ws/lib_A'
Catch path is '/home/markus/PROJECT/GARBAGE/tool_1/ws/catch2/extras'
-- DEFINE_UNIT_TEST_NAME = test_tool_1
-- DEFINE_UNIT_TEST_FILES = ../src/fn.cpp;test_main.cpp;test_tool_1.cpp
-- Dependencies:
--     lib_A @ master-yoda, chosen from [master-yoda]
--     lib_B @ master-yoda, chosen from [master-yoda]
--     libFreeAssange @ belmarsh, chosen from [belmarsh]
--     catch2 @ v2.x, chosen from [v2.x]
--     fmt @ master, chosen from [master]
-- Configuring done
CMake Error at test-catch/CMakeLists.txt:24 (add_executable):
  Target "test_tool_1" links to target "Daixtrose::lib_A" but the target was
  not found.  Perhaps a find_package() call is missing for an IMPORTED
  target, or an ALIAS target is missing?
Call Stack (most recent call first):
  test-catch/CMakeLists.txt:43 (define_unit_test)


CMake Error at CMakeLists.txt:47 (add_executable):
  Target "tool_1" links to target "Daixtrose::lib_A" but the target was not
  found.  Perhaps a find_package() call is missing for an IMPORTED target, or
  an ALIAS target is missing?

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