Question

我的程序包含两个外部库的头文件：nifti_io.h和CImg.h（分别从here和here下载）。编译器（位于Code :: Blocks内部的GCC 8.2.0）在/usr/include/dirent.h中返回了这些奇怪的错误-IDE中的生成消息为：

g++ -Wall -fexceptions -O2 -c /tmp/image_test.cpp -o tmp/obj/Release/image_test.o
g++ -o bin/Release/image_test obj/Release/image_test.o -s ../z/libz.so ../znz/bin/Release/libznz.so ../nifti/bin/Release/libnifti.so
In file included from /usr/include/nifti/nifti1_io.h:18,
             from /tmp/image_test.cpp:4:
/usr/include/dirent.h:99:5: error: expected identifier before numeric constant
     DT_UNKNOWN = 0,
     ^~~~~~~~~~
/usr/include/dirent.h:99:5: error: expected ‘}’ before numeric constant
In file included from /tmp/CImg.h:173,
             from /tmp/image_test.cpp:7:
/usr/include/dirent.h:98:3: note: to match this ‘{’
   {
   ^
In file included from /usr/include/nifti/nifti1_io.h:18,
             from /tmp/image_test.cpp:4:
/usr/include/dirent.h:99:5: error: expected unqualified-id before numeric constant
     DT_UNKNOWN = 0,
     ^~~~~~~~~~
In file included from /usr/include/features.h:424,
             from /usr/include/x86_64-linux-gnu/bits/libc-header-start.h:33,
             from /usr/include/stdio.h:27,
             from /usr/include/nifti/nifti1_io.h:9,
             from /tmp/image_test.cpp:4:
/usr/include/dirent.h:402:1: error: expected declaration before ‘}’ token
 __END_DECLS
 ^~~~~~~~~~~
Process terminated with status 1 (0 minute(s), 0 second(s))
4 error(s), 0 warning(s) (0 minute(s), 0 second(s))

将所有内容注释掉之后（包括这些库的所有程序所做的工作都是int main() { return (0); }），错误仍然存在。

#include "nifti/nifti1_io.h"
#include "CImg.h"
int main() { return ( 0 ); }

仅包含其中一个（nifti1_io.h或CImg.h）进行编译，不会出现错误或警告。包括它们两个都返回上面的输出。

有人知道这是什么原因以及如何解决吗？我的猜测是，它与编译器指令有关，特别是涉及extern "C"的指令。我想保留包含的头文件，因为它们不是我的。

包括两个外部库会导致dirent.h错误

0 个答案: