make meson version configurable

1 files changed, 13 insertions, 3 deletions

diff --git a/meson.build b/meson.build
index af383fbf..ac161987 100644
--- a/meson.build
+++ b/meson.build
@@ -23,10 +23,20 @@ pango          = dependency('pango')
 pixman         = dependency('pixman-1')
 libcap         = dependency('libcap')
 math           = cc.find_library('m')
+git = find_program('git', required: false)
 
-git_commit_hash = run_command(['git', 'describe', '--always', '--tags']).stdout().strip()
-git_branch = run_command(['git', 'rev-parse', '--abbrev-ref', 'HEAD']).stdout().strip()
-version = '"@0@ (" __DATE__ ", branch \'@1@\')"'.format(git_commit_hash, git_branch)
+version = get_option('sway_version')
+if version != ''
+        version = '"@0@"'.format(version)
+else
+        if not git.found()
+                error('git is required to make the version string')
+        endif
+
+        git_commit_hash = run_command([git.path(), 'describe', '--always', '--tags']).stdout().strip()
+        git_branch = run_command([git.path(), 'rev-parse', '--abbrev-ref', 'HEAD']).stdout().strip()
+        version = '"@0@ (" __DATE__ ", branch \'@1@\')"'.format(git_commit_hash, git_branch)
+endif
 
 add_project_arguments('-DSWAY_VERSION=@0@'.format(version), language: 'c')