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i am using Keil uVision3 + ADUC7026, i am trying to allocate #include <ADuC7026.h> #include "stdio.h" #include "stdlib.h" unsigned char memory_pool[0x400]; int main (void) { int *i; init_mempool (memory_pool, sizeof(memory_pool)); i = malloc(sizeof(int)); } warning: implicit declaration of function 'init_mempool' .......... error: undefined reference to 'init_mempool' can someone help me ,why can't find init_mempool? "Do not use Standart Libriries" is uncheckt. and the system can find malloc. thanks
thanks Jon, thanks Drew. problem solved. i used GNU, hence the problem...
When you start an ARM project, you should first to select the compiler (Keil CARM, GNU, or ARM ADS/RealView) you want to use. init_mempool is only part of the Keil CARM Compiler run-time library. For using this function, it is required that you setup a project using the Keil CARM compiler. See Getting Started User's Guide (GSA.CHM, Development Tools, Select the Toolset). For using malloc with Keil CARM you need to call the init_mempool function. See: http://www.keil.com/support/man/docs/ca/ca_init_mempool.htm For using malloc with GNU Compiler you need a more complex setup. See example: Keil\ARM\GNU\Examples\Memory. However, due to the nature of the GNU run-time library (it has a clustering of 32KB and requires a minimum RAM of 32KB) you cannot use malloc on single chip devices. Therefore you should consider to use the Keil CARM compiler instead, since the run-time library is designed for single chip systems. Reinhard