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version: semver.org compliance

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We use `git describe` to stamp pre-release versions (dev builds). But
`git describe` uses the result of the most-recent tag (the current
_release_ version)--so we must munge it with the _next_ (i.e.
unreleased) version.

Also fix non-git builds: do not invoke git_describe(NVIM_VERSION_MEDIUM)
if we're not in a git tree, else it gets the dummy value
"HEAD-HASH-NOTFOUND".

Example :version output in non-git build:
  NVIM 0.1.2-dev

Example :version output in git build:
  NVIM v0.1.2-176-g9c3c2b5
This commit is contained in:
Justin M. Keyes 2015-12-13 12:29:02 -05:00
parent 7643245470
commit b4b4536339
1 changed files with 14 additions and 4 deletions
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18
CMakeLists.txt
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@ -51,15 +51,25 @@ if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE "Dev" CACHE STRING "Choose the type of build." FORCE)
endif()
# If not in a git repo (e.g., a tarball) these tokens set the version string,
# otherwise the result of `git describe` is used.
# If not in a git repo (e.g., a tarball) these tokens define the complete
# version string, else it is combined with the result of `git describe`.
set(NVIM_VERSION_MAJOR 0)
set(NVIM_VERSION_MINOR 1)
set(NVIM_VERSION_PATCH 1)
set(NVIM_VERSION_PATCH 2)
set(NVIM_VERSION_PRERELEASE "-dev") # for package maintainers
file(TO_CMAKE_PATH ${CMAKE_CURRENT_LIST_DIR}/.git FORCED_GIT_DIR)
include(GetGitRevisionDescription)
git_describe(NVIM_VERSION_MEDIUM)
get_git_head_revision(GIT_REFSPEC NVIM_VERSION_COMMIT)
if(NVIM_VERSION_COMMIT) # is a git repo
git_describe(NVIM_VERSION_MEDIUM)
# `git describe` annotates the most recent tagged release; for pre-release
# builds we must replace that with the unreleased version.
string(REGEX REPLACE "^v[0-9]+\\.[0-9]+\\.[0-9]+"
"v${NVIM_VERSION_MAJOR}.${NVIM_VERSION_MINOR}.${NVIM_VERSION_PATCH}"
NVIM_VERSION_MEDIUM
${NVIM_VERSION_MEDIUM})
endif()
set(NVIM_VERSION_BUILD_TYPE "${CMAKE_BUILD_TYPE}")
# NVIM_VERSION_CFLAGS set further below.