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

9 files changed, 57 insertions, 10 deletions

diff --git a/Makefile.am b/Makefile.am
index 4dd7ad63..4263061c 100644
--- a/Makefile.am
+++ b/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 \
diff --git a/configure.ac b/configure.ac
index d4580a31..bb8a75fb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -252,6 +252,21 @@ 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}
diff --git a/data/Makefile.am b/data/Makefile.am
index 12330e27..640d2b24 100644
--- a/data/Makefile.am
+++ b/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' \
diff --git a/data/meson.build b/data/meson.build
index d2a36b7e..7063d00e 100644
--- a/data/meson.build
+++ b/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,
diff --git a/introspection/meson.build b/introspection/meson.build
index b1da7ee5..6f45c185 100644
--- a/introspection/meson.build
+++ b/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')
 
diff --git a/libmm-glib/meson.build b/libmm-glib/meson.build
index 64518439..42f8ac61 100644
--- a/libmm-glib/meson.build
+++ b/libmm-glib/meson.build
@@ -196,4 +196,6 @@ if enable_gir
   endif
 endif
 
-subdir('tests')
+if enable_tests
+  subdir('tests')
+endif
diff --git a/meson.build b/meson.build
index f656d357..0f6ae409 100644
--- a/meson.build
+++ b/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')
 
diff --git a/meson_options.txt b/meson_options.txt
index fa8d209e..da105e1d 100644
--- a/meson_options.txt
+++ b/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')
diff --git a/src/meson.build b/src/meson.build
index 2d1faed7..fdcfdebd 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -329,4 +329,6 @@ install_data(
   install_dir: udev_rulesdir,
 )
 
-subdir('tests')
+if enable_tests
+  subdir('tests')
+endif