[Debian-on-mobile-maintainers] Trouble building libqmi (dpkg-gensymbols unhappy)

[Evangelos Ribeiro Tzaras]

Hi,

I'm currently trying to backport MM and friends into pureOS (to see if
qmi voice management fixes an issue with [Calls]) but I'm having
trouble building libqmi:

   dh_makeshlibs -a
dpkg-gensymbols: error: some new symbols appeared in the symbols file:
see diff output below
dpkg-gensymbols: warning: debian/libqmi-glib5/DEBIAN/symbols doesn't
match completely debian/libqmi-glib5.symbols
--- debian/libqmi-glib5.symbols (libqmi-glib5_1.30.4-1_amd64)
+++ dpkg-gensymbolsS9I87O       2022-02-18 06:57:13.066218572 +0100
@@ -564,6 +564,7 @@
  qmi_device_expected_data_format_get_type at Base 1.14.0
  qmi_device_get_expected_data_format at Base 1.14.0
  qmi_device_get_file at Base 1.6.0
+ qmi_device_get_node at Base 1.30.4-1
  qmi_device_get_path at Base 1.6.0
  qmi_device_get_path_display at Base 1.6.0
  qmi_device_get_service_version_info at Base 1.6.0
@@ -574,11 +575,14 @@
  qmi_device_list_links at Base 1.28.6
  qmi_device_new at Base 1.6.0
  qmi_device_new_finish at Base 1.6.0
+ qmi_device_new_from_node at Base 1.30.4-1
+ qmi_device_new_from_node_finish at Base 1.30.4-1
  qmi_device_open at Base 1.6.0
  qmi_device_open_finish at Base 1.6.0
  qmi_device_open_flags_build_string_from_mask at Base 1.10.0
  qmi_device_open_flags_get_type at Base 1.10.0
  qmi_device_peek_file at Base 1.6.0
+ qmi_device_peek_node at Base 1.30.4-1
  qmi_device_release_client at Base 1.6.0
  qmi_device_release_client_finish at Base 1.6.0
  qmi_device_release_client_flags_build_string_from_mask at Base 1.10.0
@@ -653,6 +657,8 @@
  qmi_endpoint_parse_buffer at Base 1.24.6
  qmi_endpoint_qmux_get_type at Base 1.24.6
  qmi_endpoint_qmux_new at Base 1.24.6
+ qmi_endpoint_qrtr_get_type at Base 1.30.4-1
+ qmi_endpoint_qrtr_new at Base 1.30.4-1
  qmi_endpoint_send at Base 1.24.6
  qmi_endpoint_setup_indications at Base 1.24.6
  qmi_endpoint_setup_indications_finish at Base 1.24.6
dh_makeshlibs: error: failing due to earlier errors
make: *** [debian/rules:10: binary] Error 25


After checking with `nm` I can verify that the symbols are indeed in
`debian/tmp/usr/lib/x86_64-linux-gnu/libqmi-glib.so.5.8.0` but not in
`debian/libqmi-glib5.symbols`. However the builds went through on
buildd, so I'm wondering what the problem is.


Some more digging into those symbols shows:
- `qmi_device_get_node()` `qmi_device_new_from_node()`
`qmi_device_new_from_node_finish()` `qmi_device_peek_node()`
(`src/libqmi-glib/qmi-device.h`) have been there since 1.28 (judging by
the gtk-doc "Since" annotations)
- `qmi_endpoint_qrtr_get_type()` and `qmi_endpoint_qrtr_new()` don't
have gtk-doc annotations, but checking with `git blame` etc the first
tag it was included is `1.26-rc1`


Any idea why
a) those symbols are not in the symbols file?
b) buildd does not care about them missing?
c) but my system (fully upgraded testing/sid) cares about them missing?

I wasn't sure if this is an issue with the packaging or not (especially
because buildd is happy) I wanted to reach out first before opening a
bug. The attached patch let's builds succeed on my end (and I'm happy
to open a MR should this be useful)

[Calls] https://gitlab.gnome.org/GNOME/calls/-/issues/310

Cheers
-- 
Evangelos
PGP: B938 6554 B7DD 266B CB8E 29A9 90F0 C9B1 8A6B 4A19



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