arpa2 / arpa2cm Goto Github PK

Slightly inconvenient: A fresh git repo, without version tags, will not use the _default but place rather awful strings in the version. Easily fixed, but perhaps worth noting.

When trying to establish the version from Git, the ARPA2CM module:

• produces the right version in a subtree from the source (like ./build)
• claims not to be in a Git repository during builds outside the source tree (like /tmp/build)

To reproduce (output shown below):

• pull in the repository: git clone https://github.com/vanrein/perpetuum
• change into the directory and branch: cd perpetuum ; git checkout arpa2cm
• Properly tag a version: git tag version-0.9-0 version-0.9.0
• run cmake in a subdirectory of the source like ./build: mkdir build ; cd build ; cmake ..
• run cmake in another directory like /tmp/build: mkdir /tmp/build ; cd /tmp/build ; cmake /path/to/perpetuum

Surprisingly, the added commands in the project's CMakeLists.txt do seem to work in both cases, and recover the git tag. This is all the more astounding because the Git version retriever does change to ${CMAKE_CURRENT_SOURCE_DIR} first.

The first test produces:

-- Looking for git-versioning information.
running /usr/local/bin/git diff --quiet  2>&1
  Got version 0.9.0-8-gbcb63c1
-- Found program version 0.9.0-8-gbcb63c1
-- Git is /usr/local/bin/git
-- Git was tested: version-0.9-0-8-gbcb63c1

The second test produces:

-- Looking for git-versioning information.
running /usr/local/bin/git diff --quiet  2>&1
Not a git repository
To compare two paths outside a working tree:
usage: git diff [--no-index] <path> <path>
  Git reports local changes, fixing patch level to local-20180203-164603
  Got version fatal: Not a git repository (or any of the parent directories): .git.fatal: Not a git repository (or any of the parent directories): .git.local-20180203-164603
-- Found program version fatal: Not a git repository (or any of the parent directories): .git.fatal: Not a git repository (or any of the parent directories): .git.local-20180203-164603
-- Git is /usr/local/bin/git
-- Git was tested: version-0.9-0-8-gbcb63c1

I am stymned... without a clue of what could be wrong. Help?