could not read symbols: File format not recognized

arm-linux-gnueabi-readelf工具解决问题

编译一个32位平台的内核时,出现以下错误提示:linux

libschw.a: could not read symbols: File format not recognized工具

因而进入相应的目录发现,libschw.a这个文件是存在的,可是为啥编译不过呢,一样的编译在另一个64位平台却没有这个报错。this

思路:是否与32位64位平台有关?

使用readelf来查看一下这个库,

$ arm-linux-gnueabi-readelf -h modules/aw_schw/libschw
File: modules/aw_schw/libschw(aw_schw_lib.o)
ELF Header:
  Magic:   7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
  Class:                             ELF64
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              REL (Relocatable file)
  Machine:                           <unknown>: 0xb7
  Version:                           0x1
  Entry point address:               0x0
  Start of program headers:          0 (bytes into file)
  Start of section headers:          161192 (bytes into file)
  Flags:                             0x0
  Size of this header:               64 (bytes)
  Size of program headers:           0 (bytes)
  Number of program headers:         0
  Size of section headers:           64 (bytes)
  Number of section headers:         29
  Section header string table index: 24
果真,这个库显示是64位的,为了兼容32位的,只能修改Makefile,判断到32位时,使用32位的库。
+ifeq ($(LICHEE_ARCH),arm64)
        cp libschw libschw.a
+else
+       cp libschw32 libschw.a
+endif
从新弄一份新32位的libschw32库后,从新编译,问题解决。
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