build: Add very basic meson build system

This doesn’t build any files, but does expose the list of sources as a
Meson variable so it can be used as a subproject from other projects.

I thought about building a static library for gvdb, but this would cause
problems for libgio (and gvdb’s use inside libgio is the motivation for
making it subproject-able). gvdb depends on libgio types, such as
`GCancellable`, but also is a dependency of parts of libgio, such as
`GResource`. That circular dependency means that building a static
library is non-trivial.

There is an approach for achieving this, detailed by Eli Schwartz at
https://gitlab.gnome.org/GNOME/gvdb/-/merge_requests/18#note_1474750,
but that’s too much work for what I would like to achieve here. It can
always be implemented in future, particularly if we add unit tests to
gvdb (in this git repository) or if another project starts linking gvdb
in using Meson subprojects rather than copy/paste.

The files have to be moved to a `gvdb/` subdirectory to keep the include
paths working correctly — code in GLib which uses gvdb uses `#include
<gvdb/gvdb-builder.h>`.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>

6 files changed, 15 insertions, 0 deletions

diff --git a/gvdb-builder.c b/gvdb/gvdb-builder.c
index 5dae03e..5dae03e 100644
--- a/gvdb-builder.c
+++ b/gvdb/gvdb-builder.c
diff --git a/gvdb-builder.h b/gvdb/gvdb-builder.h
index 30757d0..30757d0 100644
--- a/gvdb-builder.h
+++ b/gvdb/gvdb-builder.h
diff --git a/gvdb-format.h b/gvdb/gvdb-format.h
index ed6adab..ed6adab 100644
--- a/gvdb-format.h
+++ b/gvdb/gvdb-format.h
diff --git a/gvdb-reader.c b/gvdb/gvdb-reader.c
index 820ce4c..820ce4c 100644
--- a/gvdb-reader.c
+++ b/gvdb/gvdb-reader.c
diff --git a/gvdb-reader.h b/gvdb/gvdb-reader.h
index 79a97d3..79a97d3 100644
--- a/gvdb-reader.h
+++ b/gvdb/gvdb-reader.h
diff --git a/meson.build b/meson.build
new file mode 100644
index 0000000..01c86b4
--- /dev/null
+++ b/meson.build
@@ -0,0 +1,15 @@
+project('gvdb', 'c',
+    version: '0.0',
+    meson_version: '>=0.54.0',
+)
+
+libgvdb_sources = files(
+    'gvdb/gvdb-builder.c',
+    'gvdb/gvdb-reader.c',
+)
+
+gvdb_dep = declare_dependency(
+  sources: libgvdb_sources,
+  include_directories: include_directories('.'),
+)
+meson.override_dependency('gvdb', gvdb_dep)