Hi All,
“mongoose-master/mongoose.c:2665:56: error: macro “poll” requires 3 arguments, but only 2 given
int mg_mgr_poll(struct mg_mgr *m, int timeout_ms) {
But if I look in mongoose.h for the vtable poll definition it only specifies 2 arguments, as called. Where/how is my build picking up a vtable definition with 3 arguments?!
struct mg_iface_vtable {
cpq
April 23, 2019, 12:29pm
2
I guess some of the header files has a poll macro defined:
#define poll(a,b,c) ....
I suggest to add the -E flag to the compilation line to see the preprocessed output, find mg_mgr_poll() call and see where did the preprocessor take the poll definition from.
I did a build with -E. But I’m not seeing a mg_mgr_poll reference. How do I see the preproc references in MCUxpresso (ie Eclipse)…hrmm … ??
Invoking: MCU C Compiler
LWIP has a poll defined as well in tcp.h. But its not a macro, so that shouldnt be it.
#if LWIP_CALLBACK_API/ Function to be called when (in-sequence) data has arrived. / Function to be called when a connection has been set up. / Function which is called periodically. / Function to be called whenever a fatal error occurs. /#endif / LWIP_CALLBACK_API */
I stuck a 3rd argument of 0 in there just to see what would happen. Interestingly it complains about a LWIP variable now ( ‘lwip_poll’):
C:/NXP/IMXRT1060-EVK_CIRAS4/ThirdParty/mongoose-master/mongoose.c: In function ‘mg_mgr_poll’:
cpq
April 23, 2019, 1:44pm
6
When you add -E to the compilation line, the output should be a preprocessed source, with all macros expanded. I do not see that in your output. You keep posting something different.
Please read about the -E flag, and cpp binary (the C preprocessor), it’s output, etc.
Also, please enclose the source code, and the command outputs, in the triple backticks (this is the markdown syntax) to help readers of your posts.
Well, I have -E specified. What am I forgetting?
Ok, adding “-save-temps” allowed MCUxpresso to retain the .i preprocessor files.
# 2643 "C:/NXP/IMXRT1060-EVK_CIRAS4/ThirdParty/mongoose-master/mongoose.c"
; conn = tmp_conn) {
[...]
int mg_mgr_poll(struct mg_mgr *m, int timeout_ms) {
int i, num_calls_before = m->num_calls;
for (i = 0; i < m->num_ifaces; i++) {
m->ifaces[i]->vtable->poll;
}
return (m->num_calls - num_calls_before);
}
