On Sat, Oct 28, 2017 at 09:29:16AM -0700, Fred wrote:
Hello,
I need to compile an older program and have a compile error. How can I
resolve this? Unfortunately I am not a C programmer although I do assembler
programming.
Here is the output of make:
making all in ./src...
make[1]: Entering directory '/opt/pcb-1.6.3p/src'
gcc -m32 -g -O2 -fno-strict-aliasing -Dlinux -D__i386__
-D_POSIX_C_SOURCE=199309L -D_POSIX_SOURCE -D_XOPEN_SOURCE
-D_BSD_SOURCE -D_SVID_SOURCE
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DFUNCPROTO=15 -DNARROWPROTO
-DRELEASE=\"1.6.3\" -DPCBLIBDIR=\"/home/cad/lib/pcb\" -DBTNMOD=\"Mod1\"
-DFONTFILENAME=\"default_font\" -DLIBRARYFILENAME=\"pcblib\"
-DGNUM4=\"/usr/bin/m4\" -DHAS_ATEXIT -DHAS_REGEX -c -o dev_rs274x.o
dev_rs274x.c
dev_rs274x.c: In function ‘GBX_PrintPolygon’:
dev_rs274x.c:821:13: error: invalid storage class for function
‘isRectangle’
static int isRectangle(PolygonTypePtr Ptr);
^
<builtin>: recipe for target 'dev_rs274x.o' failed
make[1]: *** [dev_rs274x.o] Error 1
make[1]: Leaving directory '/opt/pcb-1.6.3p/src'
Makefile:1071: recipe for target 'all' failed
make: *** [all] Error 2
The error is pointing to a function declaration.
The source:
This source is for the function definition/implementation. We don't
even know if this is in the same source file as the line that caused the
error (which may or may not be relevant).
/* ----------------------------------------------------------------------
* Checks a four-point polygon to see if it's a rectangle.
* Tick off pairs of X & Y coords; if we get four matches,
* we have a rectangle.
*/
static int isRectangle(PolygonTypePtr Ptr)
{
Cardinal i, j;
int matches = 0;
if (Ptr->PointN != 4)
return(0);
for (i=0; i<4; i++)
for (j = i+1; j<4; j++) {
if (Ptr->Points[i].X == Ptr->Points[j].X)
matches++;
if (Ptr->Points[i].Y == Ptr->Points[j].Y)
matches++;
}
if (matches == 4)
return(1);
else
return(0);
}
It is difficult to say, but this might explain it:
https://stackoverflow.com/questions/11706868/confusion-about-static-function-pointer-in-c
You may need to remove the static keyword from the declaration.
If you could provide complete sources (or a link to them) then perhaps
someone could provide a more definitive answer.
Regards,
-Roberto