From 1117dd3651be3cf763abf6fedcd4e06a6444fa04 Mon Sep 17 00:00:00 2001 From: Sverker Eriksson Date: Fri, 8 Jan 2016 15:22:52 +0100 Subject: erts: Allow -fvisibility=hidden for NIFs and drivers as is strongly recommended by gcc man page. We use __attribute__ ((visibility("default"))) to make sure the init functions are properly exported. --- erts/emulator/beam/erl_driver.h | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'erts/emulator/beam/erl_driver.h') diff --git a/erts/emulator/beam/erl_driver.h b/erts/emulator/beam/erl_driver.h index 268bda8b58..0636171ad1 100644 --- a/erts/emulator/beam/erl_driver.h +++ b/erts/emulator/beam/erl_driver.h @@ -378,15 +378,23 @@ typedef struct erl_drv_entry { #ifdef STATIC_ERLANG_DRIVER # define ERLANG_DRIVER_NAME(NAME) NAME ## _driver_init +# define ERL_DRIVER_EXPORT #else # define ERLANG_DRIVER_NAME(NAME) driver_init +# if defined(__GNUC__) && __GNUC__ >= 4 +# define ERL_DRIVER_EXPORT __attribute__ ((visibility("default"))) +# elif defined (__SUNPRO_C) && (__SUNPRO_C >= 0x550) +# define ERL_DRIVER_EXPORT __global +# else +# define ERL_DRIVER_EXPORT +# endif #endif #ifndef ERL_DRIVER_TYPES_ONLY -# define DRIVER_INIT(DRIVER_NAME) \ - ErlDrvEntry* ERLANG_DRIVER_NAME(DRIVER_NAME)(void); \ - ErlDrvEntry* ERLANG_DRIVER_NAME(DRIVER_NAME)(void) +#define DRIVER_INIT(DRIVER_NAME) \ + ERL_DRIVER_EXPORT ErlDrvEntry* ERLANG_DRIVER_NAME(DRIVER_NAME)(void); \ + ERL_DRIVER_EXPORT ErlDrvEntry* ERLANG_DRIVER_NAME(DRIVER_NAME)(void) #define ERL_DRV_BUSY_MSGQ_DISABLED (~((ErlDrvSizeT) 0)) #define ERL_DRV_BUSY_MSGQ_READ_ONLY ((ErlDrvSizeT) 0) -- cgit v1.2.3