c++ - bunch of errors and warnings while compiling in gcc linux -


this question has answer here:

this piece of code used compiled no errors few months ago. lost vm image setup new linux vm latest gcc , libraries. these errors , warnings.

in file included /opt/espressif/esp8266_sdk/include/ets_sys.h:12:0,                  include/espmissingincludes.h:4,                  driver/i2c.c:20: driver/i2c.c: in function 'i2c_init': /opt/espressif/esp8266_sdk/include/eagle_soc.h:247:94: error: suggest parentheses around arithmetic in operand of '|' [-werror=parentheses]  #define pin_func_select(pin_name, func)  {write_peri_reg(pin_name,read_peri_reg(pin_name) & (~(periphs_io_mux_func<<periphs_io_mux_func_s)) |( (((func&bit2)<<2)|(func&0x3))<<periphs_io_mux_func_s) );} while (0)                                                                                               ^ /opt/espressif/esp8266_sdk/include/eagle_soc.h:50:87: note: in definition of macro 'write_peri_reg'  #define write_peri_reg(addr, val) (*((volatile uint32_t *)ets_uncached_addr(addr))) =(val)                                                                                        ^ driver/i2c.c:64:5: note: in expansion of macro 'pin_func_select'      pin_func_select(i2c_sda_mux, i2c_sda_func);      ^ /opt/espressif/esp8266_sdk/include/eagle_soc.h:247:94: error: suggest parentheses around arithmetic in operand of '|' [-werror=parentheses]  #define pin_func_select(pin_name, func)  {write_peri_reg(pin_name,read_peri_reg(pin_name) & (~(periphs_io_mux_func<<periphs_io_mux_func_s)) |( (((func&bit2)<<2)|(func&0x3))<<periphs_io_mux_func_s) );} while (0)                                                                                               ^ /opt/espressif/esp8266_sdk/include/eagle_soc.h:50:87: note: in definition of macro 'write_peri_reg'  #define write_peri_reg(addr, val) (*((volatile uint32_t *)ets_uncached_addr(addr))) =(val)                                                                                        ^ driver/i2c.c:65:5: note: in expansion of macro 'pin_func_select'      pin_func_select(i2c_sck_mux, i2c_sck_func);      ^ cc1: warnings being treated errors make: *** [build/driver/i2c.o] error 1

does know how solve these?

you treating warnings errors, presumably building using -werror. code should compile if remove flag, or add -wno-error=parentheses.

however, if code yours (rather in 3rd party library appears be) worth fixing underlying cause. fix in macro adding parenthesis in right places, think you'd better served making macros real functions.


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