From 4a1133146a322e10033170530ea2f5ffbc874043 Mon Sep 17 00:00:00 2001
From: Robbert van der Helm <mail@robbertvanderhelm.nl>
Date: Sat, 25 Apr 2020 16:12:04 +0200
Subject: [PATCH] Generate a header containing git version info

It contains the last annotated tag, and possibly also the number of
commits since then and the hash of the last commit.
---
 meson.build                    |  4 ++++
 src/common/config/meson.build  |  8 ++++++++
 src/common/config/version.h.in | 24 ++++++++++++++++++++++++
 3 files changed, 36 insertions(+)
 create mode 100644 src/common/config/meson.build
 create mode 100644 src/common/config/version.h.in

diff --git a/meson.build b/meson.build
index 65144f82..de4e49c9 100644
--- a/meson.build
+++ b/meson.build
@@ -27,6 +27,10 @@ endif
 # about the way these two components work together can be found in the readme
 # file.
 
+# Generate header files for configuration variables such as the current git tag
+# and the last commit hash
+subdir('src/common/config')
+
 boost_dep = dependency('boost', modules : ['filesystem'])
 bitsery_dep = subproject('bitsery').get_variable('bitsery_dep')
 threads_dep = dependency('threads')
diff --git a/src/common/config/meson.build b/src/common/config/meson.build
new file mode 100644
index 00000000..93a6b3a1
--- /dev/null
+++ b/src/common/config/meson.build
@@ -0,0 +1,8 @@
+# Generate a file containing the last annotated git tag and possibly also the
+# amount of commits since then and the hash of the last commit
+vcs_tag(
+  command : ['git', 'describe', '--always'],
+  input : 'version.h.in',
+  output : 'version.h',
+  replace_string : '@VCS_VERSION@'
+)
diff --git a/src/common/config/version.h.in b/src/common/config/version.h.in
new file mode 100644
index 00000000..ead22331
--- /dev/null
+++ b/src/common/config/version.h.in
@@ -0,0 +1,24 @@
+// yabridge: a Wine VST bridge
+// Copyright (C) 2020  Robbert van der Helm
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+/**
+ * Will be replaced with the output of `git describe` by Meson. Contains the
+ * latest annotated tag and possibly also the amount of commits and the hash of
+ * the last commit.
+ */
+constexpr char yabridge_git_version[] = "@VCS_VERSION@";