More vbox and build troubles.

[Dan Nelson]

In the last episode (Oct 02), Desmond Chapman said:
> 
> ***** Checking libpng *****
> compiling the following source file:
> #include <cstdio>
> #include <png.h>
> extern "C" int main(void)
> {
>   printf("found version %s", PNG_LIBPNG_VER_STRING);
> #if PNG_LIBPNG_VER >= 10205
>   printf(", OK.\n");
>   return 0;
> #else
>   printf(", expected version 1.2.5 or higher\n");
>   return 1;
> #endif
> }
> using the following command line:
> g++ -O -Wall -o .tmp_out .tmp_src.cc "-lpng "
> .tmp_src.cc:2:17: error: png.h: No such file or directory
> .tmp_src.cc: In function 'int main()':
> .tmp_src.cc:5: error: 'PNG_LIBPNG_VER_STRING' was not declared in this scope
> 
> 
> I need the headers for this library- libpng-1.2.32. Are they in ports
> as part of another package or do I need to build them? If so, how?

Assuming you have the png port installed, add -I/usr/local/include
-L/usr/local/lib to your compile line.

-- 
	Dan Nelson
	dnelson at allantgroup.com