ARM ld:Conflicting wchar_t attributes

hylpro

一个C++的程序在连接的时候报告wchar_t类型冲突, 已经突破了我的传统观念,ld看来对类型定义也是蛮关心的.
不过参考这封邮件,应该能找到解决的办法.
http://sourceware.org/ml/binutils/2007-06/msg00279.html
Conflicting wchar_t attributes

• From: Khem Raj
• To: Paul Brook
• Cc: binutils at sourceware dot org
• Date: Tue, 26 Jun 2007 17:41:17 -0700
• Subject: Conflicting wchar_t attributes

Hi Paul
While trying out this patch
http://gcc.gnu.org/ml/gcc-patches/2007-06/msg01500.html
The test gcc.dg/fshort-wchar.c is failing with this message from linker.
ERROR: /tmp/cc6isX9R.o: Conflicting definitions of wchar_t
This error is because the test forces to have wchar_t length of 2
but when linking it has the other objects which have wchar_t length of 4
from other objects (first one is crti.o)
ld fails now because it finds that size of wchar_t is not matching  
when it opens fshort-wchar object and fails to merge the attributes  
in elf32_arm_merge_eabi_attributes ()
Looking at EABI 2.0 addendum it describes this attribute under section
Procedure Call related attributes.
My question is should merging on the sizes be allowed while linking ?
As of now ld just rejects it.
Thanks for your help
-Khem
               
               
               

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