gcc failed during compilation

[janus]

Got the below message error message .
gcc --version
gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609

gcc -c -I/build/include -Iinclude -Imodules -DPICO_COMPILE_TIME=date +%s` -Wall -W -Wextra -Wshadow -Wcast-qual -Wwrite-strings -Wundef -Wdeclaration-after-statement -Wconversion -Wcast-align -Wmissing-prototypes -Wno-missing-field-initializers -ggdb -o modules/pico_icmp4.o modules/pico_icmp4.c
In file included from modules/pico_icmp4.c:11:0:
modules/pico_icmp4.h:152:41: error: expected identifier or ‘(’ before ‘-’ token

define pico_icmp4_packet_filtered(f) (-1)

                                     ^

modules/pico_icmp4.c:179:5: note: in expansion of macro ‘pico_icmp4_packet_filtered’
int pico_icmp4_packet_filtered(struct pico_frame *f)
^
modules/pico_icmp4.h:153:42: error: expected identifier or ‘(’ before ‘-’ token

define pico_icmp4_param_problem(f, c) (-1)

                                      ^

`

[janus]

The below solved this issue ... I got it from lang.c group(Ben) ..
`
#ifdef PICO_SUPPORT_ICMP4
int pico_fn_icmp4_packet_filtered(struct pico_frame *f);
int pico_fn_icmp4_param_problem(struct pico_frame *f, uint8_t code);

define pico_icmp4_packet_filtered(f) pico_fn_icmp4_packet_filtered(f)

define pico_icmp4_param_problem(f, c) pico_fn_icmp4_param_problem(f, c)

#else

define pico_icmp4_packet_filtered(f) (-1)

define pico_icmp4_param_problem(f, c) (-1)

#endif /* PICO_SUPPORT_ICMP4 */

`