From 40136c2a520d3be681aac4201a0e8ef324616140 Mon Sep 17 00:00:00 2001
From: Adam Pigg <adam@piggz.co.uk>
Date: Wed, 31 Mar 2021 20:13:27 +0100
Subject: [PATCH] Allow to build without mmglib

---
 meson.build     |  6 +++++-
 src/at.c        |  2 ++
 src/manager.c   | 10 ++++++++++
 src/manager.h   |  7 ++++++-
 src/meson.build | 15 ++++++++++-----
 src/suspend.c   |  6 +++++-
 6 files changed, 38 insertions(+), 8 deletions(-)

diff --git a/meson.build b/meson.build
index fffeada..4c7a523 100644
--- a/meson.build
+++ b/meson.build
@@ -53,9 +53,13 @@ mgr_deps = [
     dependency('gudev-1.0'),
     dependency('libgpiod'),
     dependency('libusb-1.0'),
-    dependency('mm-glib'),
 ]
 
+mmglib_dep = dependency('mm-glib', required : false)
+if mmglib_dep.found()
+  add_global_arguments('-DHAVE_MMGLIB=1', language : 'c')
+endif
+
 subdir('data')
 subdir('src')
 subdir('udev')
diff --git a/src/at.c b/src/at.c
index 32138d0..a34025f 100644
--- a/src/at.c
+++ b/src/at.c
@@ -77,12 +77,14 @@ static gboolean send_at_command(struct EG25Manager *manager)
         g_message("Sending command: %s", g_strstrip(command));
     } else if (manager->modem_state < EG25_STATE_CONFIGURED) {
         if (manager->modem_iface == MODEM_IFACE_MODEMMANAGER) {
+#ifdef HAVE_MMGLIB
             MMModemState modem_state = mm_modem_get_state(manager->mm_modem);
 
             if (manager->mm_modem && modem_state >= MM_MODEM_STATE_REGISTERED)
                 modem_update_state(manager, modem_state);
             else
                 manager->modem_state = EG25_STATE_CONFIGURED;
+#endif
         } else {
             manager->modem_state = EG25_STATE_CONFIGURED;
         }
diff --git a/src/manager.c b/src/manager.c
index dd857b6..c0b8a43 100644
--- a/src/manager.c
+++ b/src/manager.c
@@ -7,7 +7,11 @@
 #include "at.h"
 #include "gpio.h"
 #include "manager.h"
+
+#ifdef HAVE_MMGLIB
 #include "mm-iface.h"
+#endif
+
 #include "ofono-iface.h"
 #include "suspend.h"
 #include "udev.h"
@@ -35,7 +39,9 @@ static gboolean quit_app(struct EG25Manager *manager)
     g_message("Request to quit...");
 
     at_destroy(manager);
+#ifdef HAVE_MMGLIB
     mm_iface_destroy(manager);
+#endif
     ofono_iface_destroy(manager);
     suspend_destroy(manager);
     udev_destroy(manager);
@@ -100,6 +106,7 @@ static gboolean modem_start(struct EG25Manager *manager)
     return FALSE;
 }
 
+#ifdef HAVE_MMGLIB
 void modem_update_state(struct EG25Manager *manager, MMModemState state)
 {
     switch (state) {
@@ -116,6 +123,7 @@ void modem_update_state(struct EG25Manager *manager, MMModemState state)
         break;
     }
 }
+#endif
 
 void modem_configure(struct EG25Manager *manager)
 {
@@ -328,7 +336,9 @@ int main(int argc, char *argv[])
 
     at_init(&manager, toml_table_in(toml_config, "at"));
     gpio_init(&manager, toml_table_in(toml_config, "gpio"));
+#ifdef HAVE_MMGLIB
     mm_iface_init(&manager, toml_table_in(toml_config, "mm-iface"));
+#endif
     ofono_iface_init(&manager);
     suspend_init(&manager, toml_table_in(toml_config, "suspend"));
     udev_init(&manager, toml_table_in(toml_config, "udev"));
diff --git a/src/manager.h b/src/manager.h
index d326dc1..30028e6 100644
--- a/src/manager.h
+++ b/src/manager.h
@@ -9,7 +9,9 @@
 #include <glib.h>
 #include <gpiod.h>
 #include <gudev/gudev.h>
+#ifdef HAVE_MMGLIB
 #include <libmm-glib.h>
+#endif
 #include <libgdbofono/gdbo-manager.h>
 
 #include "toml.h"
@@ -51,9 +53,10 @@ struct EG25Manager {
 
     enum ModemIface modem_iface;
     guint mm_watch;
+#ifdef HAVE_MMGLIB
     MMManager *mm_manager;
     MMModem *mm_modem;
-
+#endif
     guint ofono_watch;
     GDBOManager *ofono_manager;
     GDBusConnection *ofono_connection;
@@ -80,4 +83,6 @@ void modem_suspend_pre(struct EG25Manager *data);
 void modem_suspend_post(struct EG25Manager *data);
 void modem_resume_pre(struct EG25Manager *data);
 void modem_resume_post(struct EG25Manager *data);
+#ifdef HAVE_MMGLIB
 void modem_update_state(struct EG25Manager *data, MMModemState state);
+#endif
diff --git a/src/meson.build b/src/meson.build
index 6a9f52d..f9eb27f 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -7,18 +7,23 @@
 
 subdir('libgdbofono')
 
-executable (
-    'eg25manager',
-    [
+src = [
         'at.c', 'at.h',
         'gpio.c', 'gpio.h',
         'manager.c', 'manager.h',
-        'mm-iface.c', 'mm-iface.h',
         'ofono-iface.c', 'ofono-iface.h',
         'suspend.c', 'suspend.h',
         'toml.c', 'toml.h',
         'udev.c', 'udev.h',
-    ],
+]
+
+if mmglib_dep.found()
+  src += ['mm-iface.c', 'mm-iface.h']
+endif
+
+executable (
+    'eg25manager',
+    src,
     dependencies : mgr_deps,
     link_with: gdbofono_lib,
     install : true
diff --git a/src/suspend.c b/src/suspend.c
index b82ca7e..f9bedf9 100644
--- a/src/suspend.c
+++ b/src/suspend.c
@@ -170,7 +170,11 @@ static void signal_cb(GDBusProxy *proxy,
         g_message("system is resuming");
         take_inhibitor(manager, FALSE);
         modem_resume_pre(manager);
-        if (manager->mm_modem || manager->modem_iface == MODEM_IFACE_OFONO) {
+        if (
+#ifdef HAVE_MMGLIB
+            manager->mm_modem || 
+#endif
+            manager->modem_iface == MODEM_IFACE_OFONO) {
             /*
              * On some systems ModemManager doesn't handle suspend/resume, so
              * we still have a valid/managed modem when resuming. In this case,