xcode - Calling assembly routine in objective C -


I have written the function names in the assembly file math.nasm as follows 

 % ifdef USE_x86_ASM Section Text sebblogs nbs; * ------------------------ *; * Int NABs (Int a) *; * Price of return in EX *; * ------------------------ * ALIGN 16 NABS: Push eBooks ...... ...... POP EBX RATE% ANDIF < I am calling this function from cf function func1 to myfunc.c file - I am using nasm assembler for assembly file. I am using X-Code 3.1 version and GCC 4.0 compiler USE_x86_ASM  
 Project Settings / Build / NASM Build Options / other Flags in Xcode Settings AS -DUSE_X86_ASM 
 In addition, I have a preprocessor header file Myfunc.h is also defined - I have announced NAB in Myfunc.h  
  #define USE_x86_ASM int nABS (int a); Myfunc.c includes myfunc.h and  
  Undefined symbols: "_nABS", referenced from: _func1 Myfunc.o  
 
 Can anyone tell me why I am getting a link error? 
  
 I have removed the% ifdef condition in addition to the modified suggestion, the revised code is as follows 
 
  .text .align2 .globl _nABS. Private_extern _nABS  
 
 _nABS: push ebx ...... ...... pop ebx 
 still I'm getting the same linking error that the file is compiled , But I get the same linking error. I checked that the .o generated app is included. Link file list

Some compiler C symbols add preceding underscores. Simply add the underscore to your label in the assembly file (and globl instructions)


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