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benchmark
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Implemented git versioning 

This patch automatically versions the shared libraries from any annotated `git`
tags:

```
git tag -a v1.0.0
```

It expects semver version tags such as `v1.0.0`. It would be trivial to support
`1.0.0` but looking around it seems that most C/C++ projects follow `vX.X.X`
rather that `X.X.X` like a lot of `Node.js` stuff.

This determines that the if the project has had a certain amount of commits
since the last tag and also if the project is _dirty_ (has modified files), but
does __nothing__ with that information. In the future a more robust release
could be implemented in the script.

This is pretty brittle and has little in the way of configuration. Ideally we
should use `find_program` to work out where `git` is so that users can configure
it. This implementation assumes that `git` will be available in `PATH`

Outputs the following on the command line:

```
-- git Version: v[MAJOR].[MINOR].[PATCH]-[COMMITS_SINCE_TAG]-[SHA1](-dirty)?
-- Version: [MAJOR].[MINOR].[PATCH]
```
This commit is contained in:
Matt Clarkson 2014-07-30 20:12:04 +01:00
parent 890908c197
commit d591edf513
1 changed files with 31 additions and 2 deletions
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33
CMakeLists.txt
View File

@ -38,9 +38,38 @@ if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "x86")
add_definitions(-DARCH_X86)
endif()
# Read the git tags to determine the project version
execute_process(COMMAND git describe --match "v[0-9]*.[0-9]*.[0-9]*" --abbrev=8
RESULT_VARIABLE status
OUTPUT_VARIABLE GIT_VERSION
ERROR_QUIET)
if(${status})
set(GIT_VERSION "v0.0.0")
else()
string(STRIP ${GIT_VERSION} GIT_VERSION)
string(REGEX REPLACE "-[0-9]+-g" "-" GIT_VERSION ${GIT_VERSION})
endif()
# Work out if the repository is dirty
execute_process(COMMAND git update-index -q --refresh
OUTPUT_QUIET
ERROR_QUIET)
execute_process(COMMAND git diff-index --name-only HEAD --
OUTPUT_VARIABLE GIT_DIFF_INDEX
ERROR_QUIET)
string(COMPARE NOTEQUAL "${GIT_DIFF_INDEX}" "" GIT_DIRTY)
if (${GIT_DIRTY})
string(CONCAT GIT_VERSION ${GIT_VERSION} "-dirty")
endif()
# Tell the user what versions we are using
message("-- git Version: ${GIT_VERSION}")
string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" VERSION ${GIT_VERSION})
message("-- Version: ${VERSION}")
# The version of the libraries
set(GENERIC_LIB_VERSION "0.0.0")
set(GENERIC_LIB_SOVERSION "0")
set(GENERIC_LIB_VERSION ${VERSION})
string(SUBSTRING ${VERSION} 0 1 GENERIC_LIB_SOVERSION)
# Set up directories
include_directories(${PROJECT_SOURCE_DIR}/include)