MinGW : implicit declaration of function 'getaddrinfo' and 'freeaddrinfo'

[SESA258801]

libmodbus version

3.0.6

Operating system

Win 7 Pro 64bits

Description of the Modbus network (server, client, links, etc)

Build with MinGW

Expected behavior

Build successful

Actual behavior

Build stop with error:

$ make
make all-recursive
make[1]: Entering directory /c/Users/SESA258801/Downloads/libmodbus-3.0.6' Making all in src make[2]: Entering directory/c/Users/SESA258801/Downloads/libmodbus-3.0.6/src'
CC modbus.lo
CC modbus-data.lo
CC modbus-rtu.lo
CC modbus-tcp.lo
modbus-tcp.c: In function '_modbus_tcp_pi_connect':
modbus-tcp.c:311:5: error: implicit declaration of function 'getaddrinfo' [-Werror=implicit-function-declaration]
rc = getaddrinfo(ctx_tcp_pi->node, ctx_tcp_pi->service,
^
modbus-tcp.c:336:5: error: implicit declaration of function 'freeaddrinfo' [-Werror=implicit-function-declaration]
freeaddrinfo(ai_list);
^
cc1.exe: all warnings being treated as errors
make[2]: *** [modbus-tcp.lo] Error 1
make[2]: Leaving directory /c/Users/SESA258801/Downloads/libmodbus-3.0.6/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory/c/Users/SESA258801/Downloads/libmodbus-3.0.6'
make: *** [all] Error 2

For information:
w32api.h is already included from stdio.h
In file included from c:\mingw\include\w32api.h:59:0,
from c:\mingw\include_mingw.h:73,
from c:\mingw\include\stdio.h:56,
from modbus-tcp.c:19:
c:\mingw\include\sdkddkver.h:184:0: note: this is the location of the previous definition

define _WIN32_WINNT _WIN32_WINNT_WIN2K

I changed the code as follows in modbus-tcp.c and the build went well:
(I moved the #if defined(_WIN32) at the very beginning of the file)

...
#if defined(_WIN32)
# define OS_WIN32
/* ws2_32.dll has getaddrinfo and freeaddrinfo on Windows XP and later.
 * minwg32 headers check WINVER before allowing the use of these */
# ifndef WINVER
# define WINVER 0x0501
# endif
#include <stdio.h>
...

Steps to reproduce the behavior (commands or source code)

Launch build

libmodbus output with debug mode enabled

[stephane]

@SESA258801 could check my patch, please?

[SESA258801]

Build went well. Thx

[stephane]

Thank you for the feedback. Merged in v3.0.X and master.