I am working on ARM neon code using c intrinsics. When I compile the file I keep getting the following errors:
c:/program files (x86)/codesourcery/sourcery g++ lite/bin/../lib/gcc/arm-none-ea bi/4.3.3/../../../../arm-none-eabi/bin/ld.exe: warning: cannot find entry symbol _start; defaulting to 00008020
c:/program files (x86)/codesourcery/sourcery g++ lite/bin/../lib/gcc/arm-none-ea bi/4.3.3/../../../../arm-none-eabi/lib\libc.a(lib_a-exit.o): In function 'exit': exit.c:(.text+0x28): undefined reference to '_exit'
c:/program files (x86)/codesourcery/sourcery g++ lite/bin/../lib/gcc/arm-none-ea bi/4.3.3/../../../../arm-none-eabi/lib\libc.a(lib_a-fstatr.o): In function '_fst at_r': fstatr.c:(.text+0x1c): undefined reference to '_fstat'
c:/program files (x86)/codesourcery/sourcery g++ lite/bin/../lib/gcc/arm-none-ea bi/4.3.3/../../../../arm-none-eabi/lib\libc.a(lib_a-openr.o): In function '_open _r':openr.c:(.text+0x20): undefined reference to '_open'
c:/program files (x86)/codesourcery/sourcery g++ lite/bin/../lib/gcc/arm-none-ea bi/4.3.3/../../../../arm-none-eabi/lib\libc.a(lib_a-sbrkr.o): In function '_sbrk _r': sbrkr.c:(.text+0x18): undefined reference to '_sbrk'
c:/program files (x86)/codesourcery/sourcery g++ lite/bin/../lib/gcc/arm-none-ea bi/4.3.3/../../../../arm-none-eabi/lib\libc.a(lib_a-writer.o): In function '_wri te_r':writer.c:(.text+0x20): undefined reference to '_write'
c:/program files (x86)/codesourcery/sourcery g++ lite/bin/../lib/gcc/arm-none-ea bi/4.3.3/../../../../arm-none-eabi/lib\libc.a(lib_a-closer.o): In function '_clo se_r': closer.c:(.text+0x18): undefined reference to '_close'
c:/program files (x86)/codesourcery/sourcery g++ lite/bin/../lib/gcc/arm-none-ea bi/4.3.3/../../../../arm-none-eabi/lib\libc.a(lib_a-isattyr.o): In function '_is atty_r':isattyr.c:(.text+0x18): undefined reference to '_isatty'
c:/program files (x86)/codesourcery/sourcery g++ lite/bin/../lib/gcc/arm-none-ea bi/4.3.3/../../../../arm-none-eabi/lib\libc.a(lib_a-lseekr.o): In function '_lse ek_r':lseekr.c:(.text+0x20): undefined reference to '_lseek'
c:/program files (x86)/codesourcery/sourcery g++ lite/bin/../lib/gcc/arm-none-ea bi/4.3.3/../../../../arm-none-eabi/lib\libc.a(lib_a-readr.o): In function '_read _r':readr.c:(.text+0x20): undefined reference to '_read'
collect2: ld returned 1 exit status
Can anyone tell me how to rectify these errors?. All I know is that I have to explicitly define the functions isatty(), fstat etc. But I don't know where to define them
