i am building an application for ARM9 architecture i need some help configuring gcc linker. i am getting this error: /usr/lib/gcc-lib/arm-elf/3.4.0/../../../../arm-elf/bin/ld.exe -X -o Release/bcode.out /usr/lib/gcc-lib/arm-elf/3.4.0/crti.o /usr/lib/gcc-lib/arm-elf/3.4.0/crtbegin.o /usr/lib/gcc-lib/arm-elf/3.4.0/../../../../arm-elf/lib/crt0.o -L../../VerixVAps/ACT2000/OutPut/RV/Files/Static/Debug -L../../VerixVAps/ACT2000/OutPut/RV/Files/ShLib1/Debug -L../../VerixVAps/VFSDK/Lib -L/usr/lib/gcc-lib/arm-elf/3.4.0 -L/usr/lib/gcc-lib/arm-elf/3.4.0/../../../../arm-elf/lib Release/Barcode.o -lstdc++ -lgcc -lc -lgcc /usr/lib/gcc-lib/arm-elf/3.4.0/crtend.o /usr/lib/gcc-lib/arm-elf/3.4.0/crtn.o Release/Barcode.o(.text+0x168): In function `main': : undefined reference to `DEV_CONSOLE' Release/Barcode.o(.text+0x198): In function `$a': : undefined reference to `_sch2' Release/Barcode.o(.text+0x308): In function `initCommPort': : undefined reference to `ioctl' Release/Barcode.o(.text+0x354): In function `initCommPort': : undefined reference to `DEV_COM1' Release/Barcode.o(.text+0x374): In function `$a': : undefined reference to `_ctl2' make: *** [Release/bcode.out] Error 1 -- View this message in context: http://www.nabble.com/gcc-linker-error-tf1867211.html#a5101784 Sent from the gcc - Help forum at Nabble.com.