[ghex] build: Split versioning scheme for app and lib

[Logan Rathbone <larathbone src gnome org>]

commit 2c5dd08e6e7600caf70e6fc283ee6a546f41b7f8
Author: Logan Rathbone <poprocks gmail com>
Date:   Sat Apr 2 14:59:14 2022 -0400

    build: Split versioning scheme for app and lib
    
    For initial stable release of ghex4, the app will be 42.0 and the
    library will be libgtkhex version 4.0.0.

 meson.build     | 12 ++++++++----
 src/meson.build | 13 ++++++++-----
 2 files changed, 16 insertions(+), 9 deletions(-)
---
diff --git a/meson.build b/meson.build
index e2c505c..cdaa07e 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
 project(
   'ghex', 'c',
-  version: '4.beta.1',
+  version: '42.0',
   meson_version: '>=0.59.0',
   license: 'GPL2'
 )
@@ -24,7 +24,11 @@ build_gtk_doc = get_option('gtk_doc')
 version_arr = meson.project_version().split('.')
 ghex_version_major = version_arr[0].to_int()
 
-libgtkhex_version_major = version_arr[0].to_int()
+# libgtkhex version info
+libgtkhex_api_version   = 4
+libgtkhex_version_major = 0
+libgtkhex_version_minor = 0
+libgtkhex_version_micro = 0
 
 ghex_prefix = get_option('prefix')
 ghex_libdir = join_paths(ghex_prefix, get_option('libdir'))
@@ -41,7 +45,7 @@ ghex_girdir = join_paths(ghex_datadir, 'gir-1.0')
 ghex_typelibdir = join_paths(ghex_libdir, 'girepository-1.0')
 
 ghex_root_dir = include_directories('.')
-ghex_po_dir = join_paths(meson.source_root(), 'po')
+ghex_po_dir = join_paths(meson.project_source_root(), 'po')
 
 # warning cflags
 warning_cflags = [
@@ -86,7 +90,7 @@ if buffer_backend == 'mmap'
   config_h.set('BACKEND_MMAP', true)
 endif
 
-config_h.set_quoted('LIBGTKHEX_RELEASE_STRING', 'gtkhex-@0@.0'.format(libgtkhex_version_major))
+config_h.set_quoted('LIBGTKHEX_RELEASE_STRING', 'gtkhex-@0@.0'.format(libgtkhex_api_version))
 
 config_h.set('STATIC_HTML_HELP', get_option('static-html-help'))
 
diff --git a/src/meson.build b/src/meson.build
index f302448..edcddbf 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -31,14 +31,17 @@ libgtkhex_link_args = cc.get_supported_link_arguments([
 
 install_headers(
   libgtkhex_headers,
-  subdir: 'gtkhex-@0@'.format(libgtkhex_version_major)
+  subdir: 'gtkhex-@0@'.format(libgtkhex_api_version)
 )
 
+osx_current = libgtkhex_version_major + 1
+lib_osx_version = [osx_current, '@0@.@1@'.format(osx_current, libgtkhex_version_minor)]
+
 libgtkhex = library(
-  'gtkhex-@0@'.format(libgtkhex_version_major),
+  'gtkhex-@0@'.format(libgtkhex_api_version),
   libgtkhex_sources + libgtkhex_headers,
-  version: '0.0.0',
-  darwin_versions: ['1', '1.0'],
+  version: '0.@0@.@1@'.format(libgtkhex_version_major, libgtkhex_version_minor),
+  darwin_versions: lib_osx_version,
   include_directories: ghex_root_dir,
   dependencies: libgtkhex_deps,
   c_args: libgtkhex_c_args,
@@ -141,7 +144,7 @@ if generate_gir
 
   gtkhex_gir = gnome.generate_gir(libgtkhex,
               sources: gtkhex_gir_sources,
-            nsversion: libgtkhex_version_major.to_string(),
+            nsversion: libgtkhex_api_version.to_string(),
             namespace: 'Hex',
         symbol_prefix: 'hex',
             link_with: libgtkhex,