BLAHAJ
/
libsigrok
10
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

group all drivers into a single object 

This single object also contains the sr_drivers_init function, that will
always be referenced. That ensures that the drivers object files won't
be optimized out during static linking due to the fact that they are
not referenced directly.

This addresses (parts of) bug #802.
This commit is contained in:
Aurelien Jacobs 2016-06-05 23:10:44 +02:00 committed by Uwe Hermann
parent d1d3d2e0c4
commit 5d8b3913d4
8 changed files with 124 additions and 135 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

124
Makefile.am
View File

@ -167,42 +167,49 @@ libsigrok_la_SOURCES += \
src/scale/kern.c
# Hardware drivers
noinst_LTLIBRARIES = src/libdrivers.la
# This entry must be placed before all drivers
libsigrok_la_SOURCES += src/hardware/driver_list_start.c
src/libdrivers.o: src/libdrivers.la
$(AM_V_CCLD)$(LINK) src/libdrivers.la
src/libdrivers.lo: src/libdrivers.o
$(AM_V_GEN)echo "# Generated by libtool" > $@
$(AM_V_at)echo "pic_object='libdrivers.o'" >> $@
$(AM_V_at)echo "non_pic_object='libdrivers.o'" >> $@
src_libdrivers_la_SOURCES = src/drivers.c
if HW_AGILENT_DMM
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/agilent-dmm/api.c \
src/hardware/agilent-dmm/agilent-dmm.h \
src/hardware/agilent-dmm/sched.c
endif
if HW_APPA_55II
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/appa-55ii/protocol.h \
src/hardware/appa-55ii/protocol.c \
src/hardware/appa-55ii/api.c
endif
if HW_ARACHNID_LABS_RE_LOAD_PRO
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/arachnid-labs-re-load-pro/protocol.h \
src/hardware/arachnid-labs-re-load-pro/protocol.c \
src/hardware/arachnid-labs-re-load-pro/api.c
endif
if HW_ASIX_SIGMA
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/asix-sigma/protocol.h \
src/hardware/asix-sigma/protocol.c \
src/hardware/asix-sigma/api.c
endif
if HW_ATTEN_PPS3XXX
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/atten-pps3xxx/protocol.h \
src/hardware/atten-pps3xxx/protocol.c \
src/hardware/atten-pps3xxx/api.c
endif
if HW_BAYLIBRE_ACME
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/baylibre-acme/protocol.h \
src/hardware/baylibre-acme/protocol.c \
src/hardware/baylibre-acme/api.c \
@ -210,77 +217,77 @@ libsigrok_la_SOURCES += \
src/hardware/baylibre-acme/gpio.c
endif
if HW_BEAGLELOGIC
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/beaglelogic/beaglelogic.h \
src/hardware/beaglelogic/protocol.h \
src/hardware/beaglelogic/protocol.c \
src/hardware/beaglelogic/api.c
endif
if HW_BRYMEN_BM86X
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/brymen-bm86x/protocol.h \
src/hardware/brymen-bm86x/protocol.c \
src/hardware/brymen-bm86x/api.c
endif
if HW_BRYMEN_DMM
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/brymen-dmm/parser.c \
src/hardware/brymen-dmm/protocol.h \
src/hardware/brymen-dmm/protocol.c \
src/hardware/brymen-dmm/api.c
endif
if HW_CEM_DT_885X
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/cem-dt-885x/protocol.h \
src/hardware/cem-dt-885x/protocol.c \
src/hardware/cem-dt-885x/api.c
endif
if HW_CENTER_3XX
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/center-3xx/protocol.h \
src/hardware/center-3xx/protocol.c \
src/hardware/center-3xx/api.c
endif
if HW_CHRONOVU_LA
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/chronovu-la/protocol.h \
src/hardware/chronovu-la/protocol.c \
src/hardware/chronovu-la/api.c
endif
if HW_COLEAD_SLM
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/colead-slm/protocol.h \
src/hardware/colead-slm/protocol.c \
src/hardware/colead-slm/api.c
endif
if HW_CONRAD_DIGI_35_CPU
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/conrad-digi-35-cpu/protocol.h \
src/hardware/conrad-digi-35-cpu/protocol.c \
src/hardware/conrad-digi-35-cpu/api.c
endif
if HW_DEMO
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/demo/demo.c
endif
if HW_DEREE_DE5000
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/deree-de5000/api.c
endif
if HW_FLUKE_DMM
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/fluke-dmm/fluke-dmm.h \
src/hardware/fluke-dmm/fluke.c \
src/hardware/fluke-dmm/api.c
endif
if HW_FTDI_LA
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/ftdi-la/protocol.h \
src/hardware/ftdi-la/protocol.c \
src/hardware/ftdi-la/api.c
endif
if HW_FX2LAFW
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/fx2lafw/protocol.h \
src/hardware/fx2lafw/protocol.c \
src/hardware/fx2lafw/api.c \
@ -288,164 +295,164 @@ libsigrok_la_SOURCES += \
src/hardware/fx2lafw/dslogic.h
endif
if HW_GMC_MH_1X_2X
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/gmc-mh-1x-2x/protocol.h \
src/hardware/gmc-mh-1x-2x/protocol.c \
src/hardware/gmc-mh-1x-2x/api.c
endif
if HW_GWINSTEK_GDS_800
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/gwinstek-gds-800/protocol.h \
src/hardware/gwinstek-gds-800/protocol.c \
src/hardware/gwinstek-gds-800/api.c
endif
if HW_HAMEG_HMO
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/hameg-hmo/protocol.h \
src/hardware/hameg-hmo/protocol.c \
src/hardware/hameg-hmo/api.c
endif
if HW_HANTEK_6XXX
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/hantek-6xxx/protocol.h \
src/hardware/hantek-6xxx/protocol.c \
src/hardware/hantek-6xxx/api.c
endif
if HW_HANTEK_DSO
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/hantek-dso/dso.h \
src/hardware/hantek-dso/dso.c \
src/hardware/hantek-dso/api.c
endif
if HW_HP_3457A
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/hp-3457a/protocol.h \
src/hardware/hp-3457a/protocol.c \
src/hardware/hp-3457a/api.c
endif
if HW_HUNG_CHANG_DSO_2100
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/hung-chang-dso-2100/protocol.h \
src/hardware/hung-chang-dso-2100/protocol.c \
src/hardware/hung-chang-dso-2100/api.c
endif
if HW_IKALOGIC_SCANALOGIC2
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/ikalogic-scanalogic2/protocol.h \
src/hardware/ikalogic-scanalogic2/protocol.c \
src/hardware/ikalogic-scanalogic2/api.c
endif
if HW_IKALOGIC_SCANAPLUS
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/ikalogic-scanaplus/protocol.h \
src/hardware/ikalogic-scanaplus/protocol.c \
src/hardware/ikalogic-scanaplus/api.c
endif
if HW_KECHENG_KC_330B
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/kecheng-kc-330b/protocol.h \
src/hardware/kecheng-kc-330b/protocol.c \
src/hardware/kecheng-kc-330b/api.c
endif
if HW_KERN_SCALE
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/kern-scale/protocol.h \
src/hardware/kern-scale/protocol.c \
src/hardware/kern-scale/api.c
endif
if HW_KORAD_KAXXXXP
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/korad-kaxxxxp/protocol.h \
src/hardware/korad-kaxxxxp/protocol.c \
src/hardware/korad-kaxxxxp/api.c
endif
if HW_LASCAR_EL_USB
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/lascar-el-usb/protocol.h \
src/hardware/lascar-el-usb/protocol.c \
src/hardware/lascar-el-usb/api.c
endif
if HW_LECROY_LOGICSTUDIO
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/lecroy-logicstudio/protocol.h \
src/hardware/lecroy-logicstudio/protocol.c \
src/hardware/lecroy-logicstudio/api.c
endif
if HW_MANSON_HCS_3XXX
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/manson-hcs-3xxx/protocol.h \
src/hardware/manson-hcs-3xxx/protocol.c \
src/hardware/manson-hcs-3xxx/api.c
endif
if HW_MAYNUO_M97
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/maynuo-m97/protocol.h \
src/hardware/maynuo-m97/protocol.c \
src/hardware/maynuo-m97/api.c
endif
if HW_MIC_985XX
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/mic-985xx/protocol.h \
src/hardware/mic-985xx/protocol.c \
src/hardware/mic-985xx/api.c
endif
if HW_MOTECH_LPS_30X
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/motech-lps-30x/protocol.h \
src/hardware/motech-lps-30x/protocol.c \
src/hardware/motech-lps-30x/api.c
endif
if HW_NORMA_DMM
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/norma-dmm/protocol.h \
src/hardware/norma-dmm/protocol.c \
src/hardware/norma-dmm/api.c
endif
if HW_OPENBENCH_LOGIC_SNIFFER
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/openbench-logic-sniffer/protocol.h \
src/hardware/openbench-logic-sniffer/protocol.c \
src/hardware/openbench-logic-sniffer/api.c
endif
if HW_PCE_322A
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/pce-322a/protocol.h \
src/hardware/pce-322a/protocol.c \
src/hardware/pce-322a/api.c
endif
if HW_PIPISTRELLO_OLS
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/pipistrello-ols/protocol.h \
src/hardware/pipistrello-ols/protocol.c \
src/hardware/pipistrello-ols/api.c
endif
if HW_RIGOL_DS
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/rigol-ds/protocol.h \
src/hardware/rigol-ds/protocol.c \
src/hardware/rigol-ds/api.c
endif
if HW_SALEAE_LOGIC16
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/saleae-logic16/protocol.h \
src/hardware/saleae-logic16/protocol.c \
src/hardware/saleae-logic16/api.c
endif
if HW_SCPI_PPS
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/scpi-pps/protocol.h \
src/hardware/scpi-pps/protocol.c \
src/hardware/scpi-pps/profiles.c \
src/hardware/scpi-pps/api.c
endif
if HW_SERIAL_DMM
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/serial-dmm/protocol.h \
src/hardware/serial-dmm/protocol.c \
src/hardware/serial-dmm/api.c
endif
if HW_SYSCLK_LWLA
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/sysclk-lwla/lwla.h \
src/hardware/sysclk-lwla/lwla.c \
src/hardware/sysclk-lwla/lwla1016.c \
@ -455,43 +462,43 @@ libsigrok_la_SOURCES += \
src/hardware/sysclk-lwla/api.c
endif
if HW_TELEINFO
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/teleinfo/protocol.h \
src/hardware/teleinfo/protocol.c \
src/hardware/teleinfo/api.c
endif
if HW_TESTO
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/testo/protocol.h \
src/hardware/testo/protocol.c \
src/hardware/testo/api.c
endif
if HW_TONDAJ_SL_814
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/tondaj-sl-814/protocol.h \
src/hardware/tondaj-sl-814/protocol.c \
src/hardware/tondaj-sl-814/api.c
endif
if HW_UNI_T_DMM
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/uni-t-dmm/protocol.h \
src/hardware/uni-t-dmm/protocol.c \
src/hardware/uni-t-dmm/api.c
endif
if HW_UNI_T_UT32X
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/uni-t-ut32x/protocol.h \
src/hardware/uni-t-ut32x/protocol.c \
src/hardware/uni-t-ut32x/api.c
endif
if HW_VICTOR_DMM
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/victor-dmm/protocol.h \
src/hardware/victor-dmm/protocol.c \
src/hardware/victor-dmm/api.c
endif
if HW_YOKOGAWA_DLM
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/yokogawa-dlm/protocol.h \
src/hardware/yokogawa-dlm/protocol.c \
src/hardware/yokogawa-dlm/protocol_wrappers.h \
@ -499,7 +506,7 @@ libsigrok_la_SOURCES += \
src/hardware/yokogawa-dlm/api.c
endif
if HW_ZEROPLUS_LOGIC_CUBE
libsigrok_la_SOURCES += \
src_libdrivers_la_SOURCES += \
src/hardware/zeroplus-logic-cube/analyzer.c \
src/hardware/zeroplus-logic-cube/analyzer.h \
src/hardware/zeroplus-logic-cube/gl_usb.h \
@ -509,10 +516,7 @@ libsigrok_la_SOURCES += \
src/hardware/zeroplus-logic-cube/api.c
endif
# This entry must be placed after all drivers
libsigrok_la_SOURCES += src/hardware/driver_list_end.c
libsigrok_la_LIBADD = $(SR_EXTRA_LIBS) $(LIBSIGROK_LIBS)
libsigrok_la_LIBADD = src/libdrivers.lo $(SR_EXTRA_LIBS) $(LIBSIGROK_LIBS)
libsigrok_la_LDFLAGS = -version-info $(SR_LIB_VERSION) -no-undefined
library_includedir = $(includedir)/libsigrok

12
configure.ac
View File

@ -174,18 +174,6 @@ AM_CONDITIONAL([NEED_RPC], [test "x$sr_cv_have_rpc" = xyes])
# Check for compiler support of 128 bit integers
AC_CHECK_TYPES([__int128_t, __uint128_t], [], [], [])
# Linker flag to retain the objects of a static lib that are not referenced
AX_CHECK_LINK_FLAG([-Wl,--whole-archive -Wl,--no-whole-archive],
[SR_LINK_BEFORE_LIB=-Wl,--whole-archive
SR_LINK_AFTER_LIB=-Wl,--no-whole-archive], [
AX_CHECK_LINK_FLAG([-Wl,-force_load],
[SR_LINK_BEFORE_LIB=-Wl,-force_load
SR_LINK_AFTER_LIB=],
[SR_LINK_BEFORE_LIB=
SR_LINK_AFTER_LIB=])])
AC_SUBST(SR_LINK_BEFORE_LIB)
AC_SUBST(SR_LINK_AFTER_LIB)
########################
## Hardware drivers ##
########################

2
libsigrok.pc.in
View File

@ -9,6 +9,6 @@ URL: http://www.sigrok.org
Requires: glib-2.0
Requires.private: @SR_PKGLIBS@
Version: @SR_PACKAGE_VERSION@
Libs: -L${libdir} @SR_LINK_BEFORE_LIB@ -lsigrok @SR_LINK_AFTER_LIB@
Libs: -L${libdir} -lsigrok
Libs.private: @SR_EXTRA_LIBS@
Cflags: -I${includedir}

11
src/backend.c
View File

@ -448,8 +448,6 @@ static int sanity_check_all_transform_modules(void)
return ret;
}
extern struct sr_dev_driver *sr_driver_list_start;
/**
* Initialize libsigrok.
*
@ -470,8 +468,6 @@ SR_API int sr_init(struct sr_context **ctx)
{
int ret = SR_ERR;
struct sr_context *context;
struct sr_dev_driver **drivers;
GArray *array;
#ifdef _WIN32
WSADATA wsadata;
#endif
@ -485,12 +481,7 @@ SR_API int sr_init(struct sr_context **ctx)
context = g_malloc0(sizeof(struct sr_context));
/* Generate ctx->driver_list at runtime. */
array = g_array_new(TRUE, FALSE, sizeof(struct sr_dev_driver *));
for (drivers = (&sr_driver_list_start) + 1; *drivers; drivers++)
g_array_append_val(array, *drivers);
context->driver_list = (struct sr_dev_driver **)array->data;
g_array_free(array, FALSE);
sr_drivers_init(context);
if (sanity_check_all_drivers(context) < 0) {
sr_err("Internal driver error(s), aborting.");

56
src/drivers.c Normal file
View File

@ -0,0 +1,56 @@
/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2016 Lars-Peter Clausen <lars@metafoo.de>
* Copyright (C) 2016 Aurelien Jacobs <aurel@gnuage.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <glib.h>
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
/*
* sr_driver_list is a special section contains pointers to all the hardware
* drivers built into the library. The __start and __stop symbols are
* auto-generated by the linker (OSX needs a little help) and point to the start
* and end of the section. They are used to iterate over the list of all
* drivers.
*/
#ifdef __APPLE__
extern struct sr_dev_driver *__start_sr_driver_list __asm("section$start$__DATA$__sr_driver_list");
extern struct sr_dev_driver *__stop_sr_driver_list __asm("section$end$__DATA$__sr_driver_list");
#else
extern struct sr_dev_driver *__start_sr_driver_list;
extern struct sr_dev_driver *__stop_sr_driver_list;
#endif
/** @private
* Initialize the driver list in a fresh libsigrok context.
*
* @param ctx Pointer to a libsigrok context struct. Must not be NULL.
*/
SR_PRIV void sr_drivers_init(struct sr_context *ctx)
{
struct sr_dev_driver **drivers;
GArray *array;
array = g_array_new(TRUE, FALSE, sizeof(struct sr_dev_driver *));
for (drivers = &__start_sr_driver_list; drivers < &__stop_sr_driver_list;
drivers++)
g_array_append_val(array, *drivers);
ctx->driver_list = (struct sr_dev_driver **)array->data;
g_array_free(array, FALSE);
}

26
src/hardware/driver_list_end.c
View File

@ -1,26 +0,0 @@
/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2016 Lars-Peter Clausen <lars@metafoo.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
/* End of the driver list */
static struct sr_dev_driver *sr_driver_list_end
__attribute__((section (SR_DRIVER_LIST_SECTION), used,
aligned(sizeof(struct sr_dev_driver *)))) = NULL;

26
src/hardware/driver_list_start.c
View File

@ -1,26 +0,0 @@
/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2016 Lars-Peter Clausen <lars@metafoo.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
/* Beginning of the driver list */
const struct sr_dev_driver *sr_driver_list_start
__attribute__((section (SR_DRIVER_LIST_SECTION), used,
aligned(sizeof(struct sr_dev_driver *)))) = NULL;

2
src/libsigrok-internal.h
View File

@ -332,6 +332,8 @@ struct zip_stat;
#define SR_REGISTER_DEV_DRIVER(name) \
SR_REGISTER_DEV_DRIVER_LIST(name##_list, &name);
SR_PRIV void sr_drivers_init(struct sr_context *context);
struct sr_context {
struct sr_dev_driver **driver_list;
#ifdef HAVE_LIBUSB_1_0