gcc/linux-x86/arm/gcc-arm-none-eabi-4_8-2014q3/arm-none-eabi/lib/libg.a(lib_a-sbrkr.o): In function `_sbrk_r': sbrkr.c:(.text._sbrk_r+0x18): undefined reference to `_sbrk' /gcc/linux-x86/arm/gcc-arm-none-eabi-4_8-2014q3/arm-none-eabi/lib/libg.a(lib_a-writer.o): In function `_write_r': writer.c:(.text._write_r+0x20): undefined reference to `_write' gcc/linux-x86/arm/gcc-arm-none-eabi-4_8-2014q3/arm-none-eabi/lib/libg.a(lib_a-closer.o): In function `_close_r': closer.c:(.text._close_r+0x18): undefined reference to `_close' gcc/linux-x86/arm/gcc-arm-none-eabi-4_8-2014q3/arm-none-eabi/lib/libg.a(lib_a-lseekr.o): In function `_lseek_r': lseekr.c:(.text._lseek_r+0x20): undefined reference to `_lseek' gcc/linux-x86/arm/gcc-arm-none-eabi-4_8-2014q3/arm-none-eabi/lib/libg.a(lib_a-readr.o): In function `_read_r': readr.c:(.text._read_r+0x20): undefined reference to `_read'
包含了 printf 函数调用
检查是否包含 printf
nm libstatic.a |grep -wE "printf|malloc|fopen|fread" U printf
