shared: add "shared/nm-libnm-aux" static library

We have "shared/nm-libnm-core-aux", which is shared code that can be used
by anybody (including libnm-core, src, libnm and clients).

We have "clients/common", which are helper function for clients. But
that implies that the code is inside "clients". I think it would be
useful to have auxiliary code that extends libnm, but is not only
usable by code in "clients". In other words, "shared/nm-libnm-aux"
is a better place than "clients/common", and I think most of the
functionality form "clients/common" should move there.

Makefile.am

@@ -525,6 +525,43 @@ $(shared_nm_libnm_core_aux_libnm_libnm_core_aux_la_OBJECTS): $(libnm_core_lib_h_
 
 ###############################################################################
 
+noinst_LTLIBRARIES += shared/nm-libnm-aux/libnm-libnm-aux.la
+
+shared_nm_libnm_aux_libnm_libnm_aux_la_CPPFLAGS = \
+	$(dflt_cppflags) \
+	-I$(srcdir)/shared \
+	-I$(builddir)/shared \
+	-I$(srcdir)/libnm-core \
+	-I$(builddir)/libnm-core \
+	-I$(srcdir)/libnm \
+	-I$(builddir)/libnm \
+	$(CODE_COVERAGE_CFLAGS) \
+	$(GLIB_CFLAGS) \
+	$(SANITIZER_LIB_CFLAGS) \
+	-DG_LOG_DOMAIN=\""libnmc"\" \
+	-DNETWORKMANAGER_COMPILATION=NM_NETWORKMANAGER_COMPILATION_CLIENT \
+	$(NULL)
+
+shared_nm_libnm_aux_libnm_libnm_aux_la_SOURCES = \
+	shared/nm-libnm-aux/nm-libnm-aux.c \
+	shared/nm-libnm-aux/nm-libnm-aux.h \
+	$(NULL)
+
+shared_nm_libnm_aux_libnm_libnm_aux_la_LDFLAGS = \
+	$(CODE_COVERAGE_LDFLAGS) \
+	$(SANITIZER_LIB_LDFLAGS) \
+	$(NULL)
+
+shared_nm_libnm_aux_libnm_libnm_aux_la_LIBADD = \
+	$(GLIB_LIBS) \
+	libnm/libnm.la \
+	$(NULL)
+
+$(shared_nm_libnm_aux_libnm_libnm_aux_la_OBJECTS): $(libnm_core_lib_h_pub_mkenums)
+$(shared_nm_libnm_aux_libnm_libnm_aux_la_OBJECTS): $(libnm_lib_h_pub_mkenums)
+
+###############################################################################
+
 EXTRA_DIST += \
 	shared/nm-glib-aux/tests/meson.build \
 	$(NULL)

libnm/meson.build

@@ -278,3 +278,21 @@ endif
 if enable_tests
   subdir('tests')
 endif
+
+libnm_libnm_aux = static_library(
+  'nm-libnm-aux',
+  sources: nm_libnm_aux_source,
+  c_args: [
+    '-DG_LOG_DOMAIN="@0@"'.format('libnmc'),
+    '-DNETWORKMANAGER_COMPILATION=NM_NETWORKMANAGER_COMPILATION_CLIENT',
+  ],
+  dependencies: [
+    libnm_core_nm_default_dep,
+    libnm_dep,
+  ],
+)
+
+libnm_libnm_aux_dep = declare_dependency(
+  include_directories: [shared_inc],
+  link_with: [libnm_libnm_aux],
+)

shared/meson.build

@@ -111,6 +111,8 @@ nm_libnm_core_aux_source = files('nm-libnm-core-aux/nm-libnm-core-aux.c')
 
 nm_libnm_core_utils_source = files('nm-libnm-core-intern/nm-libnm-core-utils.c')
 
+nm_libnm_aux_source = files('nm-libnm-aux/nm-libnm-aux.c')
+
 nm_meta_setting_source = files('nm-meta-setting.c')
 
 nm_test_utils_impl_source = files('nm-test-utils-impl.c')
@@ -168,15 +170,14 @@ libnm_utils_base_dep = declare_dependency(
   link_with: libnm_utils_base,
 )
 
-deps = [
-  glib_nm_default_dep,
-  libudev_dep,
-]
 
 libnm_udev_aux = static_library(
   'nm-udev-aux',
   sources: 'nm-udev-aux/nm-udev-utils.c',
-  dependencies: deps,
+  dependencies: [
+    glib_nm_default_dep,
+    libudev_dep,
+  ],
   c_args: c_flags,
 )
 

shared/nm-libnm-aux/nm-libnm-aux.c

@@ -0,0 +1,5 @@
+// SPDX-License-Identifier: LGPL-2.1+
+
+#include "nm-default.h"
+
+#include "nm-libnm-aux.h"

shared/nm-libnm-aux/nm-libnm-aux.h

@@ -0,0 +1,6 @@
+// SPDX-License-Identifier: LGPL-2.1+
+
+#ifndef __NM_LIBNM_AUX_H__
+#define __NM_LIBNM_AUX_H__
+
+#endif /* __NM_LIBNM_AUX_H__ */