Add symbol map file.

Fixes #88

lib/Makefile.am

@@ -70,8 +70,11 @@ libethercat_la_CFLAGS = -fno-strict-aliasing -Wall -I$(top_srcdir) \
 # 3:0:2
 #
 libethercat_la_LDFLAGS = -version-info 3:0:2 \
+	-Wl,--version-script=$(srcdir)/libethercat.map \
 	-fvisibility=hidden
 
+libethercat_la_DEPENDENCIES = libethercat.map
+
 pkgconfig_DATA = libethercat.pc
 
 cmakedir = $(libdir)/cmake/ethercat

lib/libethercat.map

@@ -0,0 +1,107 @@
+LIBETHERCAT_1.5.2 {
+	global:
+		ecrt_domain_data;
+		ecrt_domain_process;
+		ecrt_domain_queue;
+		ecrt_domain_reg_pdo_entry_list;
+		ecrt_domain_size;
+		ecrt_domain_state;
+		ecrt_master;
+		ecrt_master_activate;
+		ecrt_master_application_time;
+		ecrt_master_create_domain;
+		ecrt_master_deactivate;
+		ecrt_master_get_pdo;
+		ecrt_master_get_pdo_entry;
+		ecrt_master_get_slave;
+		ecrt_master_get_sync_manager;
+		ecrt_master_link_state;
+		ecrt_master_read_idn;
+		ecrt_master_receive;
+		ecrt_master_reference_clock_time;
+		ecrt_master_reserve;
+		ecrt_master_reset;
+		ecrt_master_sdo_download;
+		ecrt_master_sdo_download_complete;
+		ecrt_master_sdo_upload;
+		ecrt_master_select_reference_clock;
+		ecrt_master_send;
+		ecrt_master_set_send_interval;
+		ecrt_master_slave_config;
+		ecrt_master_state;
+		ecrt_master_sync_monitor_process;
+		ecrt_master_sync_monitor_queue;
+		ecrt_master_sync_reference_clock;
+		ecrt_master_sync_slave_clocks;
+		ecrt_master_write_idn;
+		ecrt_open_master;
+		ecrt_reg_request_data;
+		ecrt_reg_request_read;
+		ecrt_reg_request_state;
+		ecrt_reg_request_write;
+		ecrt_release_master;
+		ecrt_request_master;
+		ecrt_sdo_request_data;
+		ecrt_sdo_request_data_size;
+		ecrt_sdo_request_index;
+		ecrt_sdo_request_read;
+		ecrt_sdo_request_state;
+		ecrt_sdo_request_timeout;
+		ecrt_sdo_request_write;
+		ecrt_slave_config_complete_sdo;
+		ecrt_slave_config_create_reg_request;
+		ecrt_slave_config_create_sdo_request;
+		ecrt_slave_config_create_soe_request;
+		ecrt_slave_config_create_voe_handler;
+		ecrt_slave_config_dc;
+		ecrt_slave_config_emerg_clear;
+		ecrt_slave_config_emerg_overruns;
+		ecrt_slave_config_emerg_pop;
+		ecrt_slave_config_emerg_size;
+		ecrt_slave_config_idn;
+		ecrt_slave_config_pdo_assign_add;
+		ecrt_slave_config_pdo_assign_clear;
+		ecrt_slave_config_pdo_mapping_add;
+		ecrt_slave_config_pdo_mapping_clear;
+		ecrt_slave_config_pdos;
+		ecrt_slave_config_reg_pdo_entry;
+		ecrt_slave_config_reg_pdo_entry_pos;
+		ecrt_slave_config_sdo;
+		ecrt_slave_config_sdo16;
+		ecrt_slave_config_sdo32;
+		ecrt_slave_config_sdo8;
+		ecrt_slave_config_state;
+		ecrt_slave_config_sync_manager;
+		ecrt_slave_config_watchdog;
+		ecrt_version_magic;
+		ecrt_voe_handler_data;
+		ecrt_voe_handler_data_size;
+		ecrt_voe_handler_execute;
+		ecrt_voe_handler_read;
+		ecrt_voe_handler_read_nosync;
+		ecrt_voe_handler_received_header;
+		ecrt_voe_handler_send_header;
+		ecrt_voe_handler_write;
+};
+
+LIBETHERCAT_1.5.3 {
+	global:
+		ecrt_master_sync_reference_clock_to;
+		ecrt_read_lreal;
+		ecrt_read_real;
+		ecrt_slave_config_flag;
+		ecrt_soe_request_data;
+		ecrt_soe_request_data_size;
+		ecrt_soe_request_idn;
+		ecrt_soe_request_read;
+		ecrt_soe_request_state;
+		ecrt_soe_request_timeout;
+		ecrt_soe_request_write;
+		ecrt_write_lreal;
+		ecrt_write_real;
+} LIBETHERCAT_1.5.2;
+
+LIBETHERCAT_1.6 {
+	global:
+		ecrt_master_scan_progress;
+} LIBETHERCAT_1.5.3;