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Add ld version-script

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Explicit symbol versioning allows us to provide multiple versions of
incompatible API changes. It is a very common practice in GNU world and
avoids the problems occuring if distributions try to ship multiple version
of a single DSO.

Background information available at:
  http://people.redhat.com/drepper/dsohowto.pdf

To see the symbol-versions, use objdump:
  objdump -T libevdev/.libs/libevdev.so.1.0.0
This can also be used to verify that all symbols are correctly
exported (typos in linker-scripts are silently ignored by ld).

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>

Updated for evdev 0.6's API.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
David Herrmann 2013-08-17 13:58:15 +02:00 • committed by Peter Hutterer
parent 8356f417df
commit 5f40be0b43
2 changed files with 108 additions and 2 deletions
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6
libevdev/Makefile.am
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@ -15,16 +15,18 @@ libevdev_la_SOURCES = \
libevdev_la_LDFLAGS = \
-version-info $(LIBEVDEV_LT_VERSION) \
-export-symbols-regex '^libevdev_|^LIBEVDEV_' \
-Wl,--version-script="$(srcdir)/libevdev.sym" \
$(GNU_LD_FLAGS)
EXTRA_libevdev_la_DEPENDENCIES = $(srcdir)/libevdev.sym
libevdevincludedir = $(includedir)/libevdev-1.0/libevdev
libevdevinclude_HEADERS = libevdev.h libevdev-uinput.h
event-names.h: Makefile make-event-names.py
$(PYTHON) $(srcdir)/make-event-names.py $(top_srcdir)/include/linux/input.h > $@
EXTRA_DIST = make-event-names.py
EXTRA_DIST = make-event-names.py libevdev.sym
CLEANFILES = event-names.h
BUILT_SOURCES = event-names.h

104
libevdev/libevdev.sym Normal file
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@ -0,0 +1,104 @@
/*
* Copyright (c) 2013 David Herrmann <dh.herrmann@gmail.com>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
LIBEVDEV_1 {
global:
libevdev_change_fd;
libevdev_disable_event_code;
libevdev_disable_event_type;
libevdev_enable_event_code;
libevdev_enable_event_type;
libevdev_enable_property;
libevdev_event_code_from_name;
libevdev_event_code_from_name_n;
libevdev_event_code_get_name;
libevdev_event_is_code;
libevdev_event_is_type;
libevdev_event_type_from_name;
libevdev_event_type_from_name_n;
libevdev_event_type_get_max;
libevdev_event_type_get_name;
libevdev_fetch_event_value;
libevdev_fetch_slot_value;
libevdev_free;
libevdev_get_abs_flat;
libevdev_get_abs_fuzz;
libevdev_get_abs_info;
libevdev_get_abs_maximum;
libevdev_get_abs_minimum;
libevdev_get_abs_resolution;
libevdev_get_current_slot;
libevdev_get_driver_version;
libevdev_get_event_value;
libevdev_get_fd;
libevdev_get_id_bustype;
libevdev_get_id_product;
libevdev_get_id_vendor;
libevdev_get_id_version;
libevdev_get_log_priority;
libevdev_get_name;
libevdev_get_num_slots;
libevdev_get_phys;
libevdev_get_repeat;
libevdev_get_slot_value;
libevdev_get_uniq;
libevdev_grab;
libevdev_has_event_code;
libevdev_has_event_pending;
libevdev_has_event_type;
libevdev_has_property;
libevdev_kernel_set_abs_info;
libevdev_kernel_set_led_value;
libevdev_kernel_set_led_values;
libevdev_new;
libevdev_new_from_fd;
libevdev_next_event;
libevdev_property_get_name;
libevdev_set_abs_flat;
libevdev_set_abs_fuzz;
libevdev_set_abs_info;
libevdev_set_abs_maximum;
libevdev_set_abs_minimum;
libevdev_set_abs_resolution;
libevdev_set_clock_id;
libevdev_set_event_value;
libevdev_set_fd;
libevdev_set_id_bustype;
libevdev_set_id_product;
libevdev_set_id_vendor;
libevdev_set_id_version;
libevdev_set_log_function;
libevdev_set_log_priority;
libevdev_set_name;
libevdev_set_phys;
libevdev_set_slot_value;
libevdev_set_uniq;
libevdev_uinput_create_from_device;
libevdev_uinput_destroy;
libevdev_uinput_get_devnode;
libevdev_uinput_get_fd;
libevdev_uinput_get_syspath;
libevdev_uinput_write_event;
local:
*;
};