I am seeing a compilation error in alloc.c on line 3287 on Mac OS X due to SPARE_MEMORY being undeclared.
Starting on line 193 of alloc.c is the following code block that attempts to define SPARE_MEMORY.
#ifndef SYSTEM_MALLOC /* Amount of spare memory to keep in large reserve block. */
#define SPARE_MEMORY (1 << 14) #endif
The problem is that SYSTEM_MALLOC is defined on Mac OS X but SPARE_MEMORY is not defined in any of the system header files (at least running 'grep -RnH SPARE_MEMORY *' in the /usr/include/ directory yields no results). I believe that the above code block should be changed to the following but I am not certain how this change will affect other platforms.
#ifndef SPARE_MEMORY /* Amount of spare memory to keep in large reserve block. */
#define SPARE_MEMORY (1 << 14) #endif
Note that SPARE_MEMORY does not appear to be defined on Windows either. At least I could not find it in any of the MinGW header files.
How is SPARE_MEMORY defined on systems that do define it? Is the above change the correct one? It fixes the problem on Mac OS X but I do not want to make a change that will cause problems for other operating systems.