今天使用Jsonapp, 在編譯時添加了頭檔案搜索路徑-Ixxx/json ，結果導致很多錯誤，如下：
In file included from /usr/include/x86_64-linux-gnu/c++/5/bits/c++config.h:482:0,
from /usr/include/c++/5/iostream:38,
from JsonProcess.cpp:1:
/usr/include/x86_64-linux-gnu/c++/5/bits/os_defines.h:44:19: error: missing binary operator before token "("
#if __GLIBC_PREREQ(2,15) && defined(_GNU_SOURCE)
．．．．．
．．．．．
In file included from /usr/include/libio.h:56:0,
from /usr/include/stdio.h:74,
from JsonProcess.cpp:2:
/usr/include/x86_64-linux-gnu/sys/cdefs.h:41:20: error: missing binary operator before token "("
# if __GNUC_PREREQ (4, 6) && !defined _LIBC
．．．．
/usr/include/c++/5/cwchar:208:11: error: ‘::wmemchr’ has not been declared
using ::wmemchr;
．．．．
去掉這個指定路徑可以編譯通過． 另外，我還試了一下，在cpp檔案中include xxx/json下的所有頭檔案時是可以
編譯通過的，只有添加-I后才出錯．
為什么涅？
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看下使用的頭檔案 和 庫是否一致？轉載請註明出處，本文鏈接：https://www.uj5u.com/houduan/27569.html
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