build(lib_install_dir): added lib_install_dir option

this is helpful for wheel builds

build-config/quill/meson.build

@@ -15,7 +15,7 @@ quill_sp = cmake.subproject(
 
 quill_dep = quill_sp.dependency('quill')
 
-if get_option('default_library') != 'static'
+if get_option('default_library') != 'static' and get_option('lib_install_dir') == ''
     message('Registering quill headers for installation...')
     quill_headers = meson.global_source_root() + '/subprojects/quill/include/quill'
     install_subdir(quill_headers, install_dir: get_option('includedir'))

meson.build

@@ -18,7 +18,7 @@
 #   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 #
 # *********************************************************************** #
-project('liblogging', 'cpp', version: 'v1.1.3', default_options: ['cpp_std=c++23'], meson_version: '>=1.5.0')
+project('liblogging', 'cpp', version: 'v1.1.4', default_options: ['cpp_std=c++23'], meson_version: '>=1.5.0')
 
 # Add default visibility for all C++ targets
 add_project_arguments('-fvisibility=default', language: 'cpp')

meson_options.txt

@@ -1,3 +1,4 @@
 option('pkg_config', type: 'boolean', value: true, description: 'generate pkg-config file for liblogging (fourdst_liblogging.pc)')
 option('build_tests', type: 'boolean', value: true, description: 'generate unit tests (uses gtest)')
 option('build_examples', type: 'boolean', value: true, description: 'generate example programs')
+option('lib_install_dir', type: 'string', value: '', description: 'Override install dir for the shared library (used by the fourdst umbrella to place libs inside the Python package in wheel builds). Empty = default libdir.')

src/logging/meson.build

@@ -26,13 +26,18 @@ dependencies = [
     quill_dep,
 ]
 
+logging_lib_install_dir = get_option('lib_install_dir') != '' \
+    ? get_option('lib_install_dir') \
+    : get_option('libdir')
+
 liblogging = library('logging',
-    logging_sources, 
-    include_directories: include_directories('include'),
-    cpp_args: ['-fvisibility=default'],
-    install : true,
-    dependencies: dependencies
-    )
+                     logging_sources,
+                     include_directories: include_directories('include'),
+                     cpp_args: ['-fvisibility=default'],
+                     install : true,
+                     install_dir: logging_lib_install_dir,
+                     dependencies: dependencies
+)
 
 logging_dep = declare_dependency(
     include_directories: include_directories('include'),