build: make tests optional

Add a meson option -Dtests and --without-tests automake option
to disable the compilation of all available testcases.
This is useful for compiling projects with Flatpak such as
GNOME Control Center which disables all possible integrations since they
only need the DBus part of ModemManager.

Contributes to https://gitlab.gnome.org/GNOME/gnome-control-center/-/merge_requests/1392

Makefile.am

@@ -12,12 +12,15 @@ SUBDIRS = \
 	cli \
 	vapi \
 	introspection \
-	test \
 	tools \
 	examples \
 	docs \
 	$(NULL)
 
+if WITH_TESTS
+SUBDIRS += test
+endif
+
 ChangeLog:
 	$(AM_V_GEN) if test -d "$(srcdir)/.git"; then \
 	  (GIT_DIR=$(top_srcdir)/.git $(top_srcdir)/missing --run git log --stat) | fmt --split-only > $@.tmp \

configure.ac

@@ -251,6 +251,21 @@ case $with_udev in
         ;;
 esac
 
+dnl-----------------------------------------------------------------------------
+dnl build with tests (enabled by default)
+dnl
+
+AC_ARG_WITH(tests, AS_HELP_STRING([--without-tests], [Build without testcases]), [], [with_tests=yes])
+AM_CONDITIONAL(WITH_TESTS, test "x$with_tests" = "xyes")
+case $with_tests in
+    yes)
+        AC_DEFINE(WITH_TESTS, 1, [Define if you want to build all testcases])
+        ;;
+    *)
+        with_tests=no
+        ;;
+esac
+
 dnl-----------------------------------------------------------------------------
 dnl Suspend/resume support
 dnl
@@ -629,6 +644,7 @@ examples/sms-python/Makefile
 examples/network-scan-python/Makefile
 examples/sms-c/Makefile
 ])
+
 AC_OUTPUT
 
 echo "
@@ -643,6 +659,7 @@ echo "
       warn ldflags:            ${WARN_LDFLAGS}
       maintainer mode:         ${USE_MAINTAINER_MODE}
       release:                 ${ax_is_release}
+      tests:                   ${with_tests}
 
     System paths:
       prefix:                  ${prefix}

data/Makefile.am

@@ -1,5 +1,12 @@
 
-SUBDIRS = . dispatcher-connection dispatcher-fcc-unlock tests
+SUBDIRS = \
+	. \
+	dispatcher-connection \
+	dispatcher-fcc-unlock
+
+if WITH_TESTS
+SUBDIRS += tests
+endif
 
 edit = @sed \
        -e 's|@sbindir[@]|$(sbindir)|g' \

data/meson.build

@@ -1,7 +1,9 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 # Copyright (C) 2021 Iñigo Martinez <inigomartinez@gmail.com>
 
-subdir('tests')
+if enable_tests
+  subdir('tests')
+endif
 
 service_conf = {
   'sbindir': mm_prefix / mm_sbindir,

introspection/meson.build

@@ -3,7 +3,9 @@
 
 # DBus Introspection files
 mm_ifaces_all = files('all.xml')
-mm_ifaces_test = files('tests/org.freedesktop.ModemManager1.Test.xml')
+if enable_tests
+  mm_ifaces_test = files('tests/org.freedesktop.ModemManager1.Test.xml')
+endif
 
 mm_ifaces = files('org.freedesktop.ModemManager1.xml')
 

libmm-glib/meson.build

@@ -196,4 +196,6 @@ if enable_gir
   endif
 endif
 
-subdir('tests')
+if enable_tests
+  subdir('tests')
+endif

meson.build

@@ -88,6 +88,9 @@ cc_args = cc.get_supported_arguments([
   '-Wno-missing-field-initializers',
 ])
 
+# tests are enabled by default
+enable_tests = get_option('tests')
+
 # strict flags to use in debug builds
 if get_option('buildtype').contains('debug')
   cc_args += cc.get_supported_arguments([
@@ -266,7 +269,9 @@ if dist_version != ''
   config_h.set('MM_DIST_VERSION', dist_version)
 endif
 
-util_dep = cc.find_library('util')
+if enable_tests
+  util_dep = cc.find_library('util')
+endif
 
 # introspection support
 enable_gir = get_option('introspection')
@@ -376,14 +381,19 @@ subdir('introspection')
 subdir('include')
 
 subdir('libqcdm/src')
-subdir('libqcdm/tests')
+if enable_tests
+  subdir('libqcdm/tests')
+endif
 
 subdir('libmm-glib')
 subdir('src')
 subdir('plugins')
 subdir('cli')
-subdir('test')
-subdir('tools/tests')
+
+if enable_tests
+  subdir('test')
+  subdir('tools/tests')
+endif
 
 subdir('examples/sms-c')
 

meson_options.txt

@@ -4,6 +4,8 @@
 option('udev', type: 'boolean', value: true, description: 'enable udev support')
 option('udevdir', type: 'string', value: '', description: 'udev base directory')
 
+option('tests', type: 'boolean', value: true, description: 'enable tests')
+
 option('dbus_policy_dir', type: 'string', value: '', description: 'd-bus system policy directory')
 
 option('systemdsystemunitdir', type: 'string', value: '', description: 'systemd system units directory')

src/meson.build

@@ -329,4 +329,6 @@ install_data(
   install_dir: udev_rulesdir,
 )
 
-subdir('tests')
+if enable_tests
+  subdir('tests')
+endif