今天編譯1個libffi時，出現了File name too long問題，

make[7]: stat: ffitarget.h: File name too long
make[7]: *** No rule to make target `ffitarget.h', needed by `all-am'.  Stop.

剛開始以為是編譯路徑過長，調整後，依然相同錯誤。

經過搜尋瞭解，可能是檔案本身有錯誤，經ls -l檢視，確實有問題

ffitarget.h -> /* -----------------------------------------------------------------*-C-*-?   ffitarget.h - Copyright (c) 2012  Anthony Green?                 Copyright (c) 2010  CodeSourcery?                 Copyright (c) 1996-2003  Red Hat, Inc.??   Target configuration macros for ARM.??   Permission is hereby granted, free of charge, to any person obtaining?   a copy of this software and associated documentation files (the?   ``Software''), to deal in the Software without restriction, including?   without limitation the rights to use, copy, modify, merge, publish,?   distribute, sublicense, and/or sell copies of the Software, and to?   permit persons to whom the Software is furnished to do so, subject to?   the following conditions:??   The above copyright notice and this permission notice shall be included?   in all copies or substantial portions of the Software.??   THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,?   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF?   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND?   NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT?   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,?   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,?   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER?   DEALINGS IN THE SOFTWARE.??   ----------------------------------------------------------------------- */??#ifndef LIBFFI_TARGET_H?#define LIBFFI_TARGET_H??#ifndef LIBFFI_H?#error "Please do not include ffitarget.h directly into your source.  Use ffi.h instead."?#endif??#ifndef LIBFFI_ASM?typedef unsigned long          ffi_arg;?typedef signed long            ffi_sarg;??typedef enum ffi_abi {?  FFI_FIRST_ABI = 0,?  FFI_SYSV,?  FFI_VFP,?  FFI_LAST_ABI,?#ifdef __ARM_PCS_VFP?  FFI_DEFAULT_ABI = FFI_VFP,?#else?  FFI_DEFAULT_ABI = FFI_SYSV,?#endif?} ffi_abi;?#endif??#define FFI_EXTRA_CIF_FIELDS???\?  int vfp_used;?????\?  short vfp_reg_free, vfp_nargs;??\?  signed char vfp_args[16]???\??/* Internally used. */?#define FFI_TYPE_STRUCT_VFP_FLOAT  (FFI_TYPE_LAST + 1)?#define FFI_TYPE_STRUCT_VFP_DOUBLE (FFI_TYPE_LAST + 2)??#define FFI_TARGET_SPECIFIC_VARIADIC??/* ---- Definitions for closures ----------------------------------------- */??#define FFI_CLOSURES 1?#define FFI_TRAMPOLINE_SIZE 20?#define FFI_NATIVE_RAW_API 0??#endif?

而正確的則是1個軟連線

ffitarget.h -> ../../src/arm/ffitarget.h

分析，確定，應該是通過windows下工具拷貝過程導致軟連線拷貝發生了變化。