[lwip-devel] unix port build failure (LWIP_ERRNO_INCLUDE)

[Axel Lin]

cc -g -Wall -DLWIP_DEBUG -pedantic -Werror -Wparentheses
-Wsequence-point -Wswitch-default -Wextra -Wundef -Wshadow
-Wpointer-arith -Wcast-qual -Wc++-compat -Wwrite-strings
-Wold-style-definition -Wcast-align -Wmissing-prototypes
-Wredundant-decls -Wnested-externs -Wno-address -Wunreachable-code
-Wuninitialized -Wlogical-op -I. -I../../..
-I../../../../lwip/src/include -I../../../ports/unix/port/include -c
../../../../lwip/src/core/init.c
In file included from ../../../../lwip/src/include/lwip/sockets.h:49:0,
                 from ../../../../lwip/src/core/init.c:47:
../../../../lwip/src/include/lwip/errno.h:184:28: fatal error:
(*__errno_location ()).h: No such file or directory
 #include LWIP_ERRNO_INCLUDE
                            ^
compilation terminated.
../Common.mk:93: recipe for target 'init.o' failed
make: *** [init.o] Error 1