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20 hours ago •
simonfuhrmann
simonfuhrmann
mve fails on compile (error: template with C linkage)
when i compile the code, errors occured. i don't know why, it seems the "util" package went wrong.
/usr/include/c++/11/bits/stl_tempbuf.h:225:3: error: template specialization with C linkage
225 | template<>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/stl_algo.h:62,
from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_tempbuf.h:243:3: error: template with C linkage
243 | template<typename _Pointer, typename _ForwardIterator>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/stl_algo.h:62,
from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_tempbuf.h:256:3: error: template with C linkage
256 | template<typename _ForwardIterator, typename _Tp>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/stl_algo.h:66,
from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/uniform_int_dist.h:63:5: error: template with C linkage
63 | template<typename _Tp>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/stl_algo.h:66,
from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/uniform_int_dist.h:76:3: error: template with C linkage
76 | template<typename _IntType = int>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/stl_algo.h:66,
from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/uniform_int_dist.h:273:3: error: template with C linkage
273 | template<typename _IntType>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/stl_algo.h:66,
from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/uniform_int_dist.h:364:3: error: template with C linkage
364 | template<typename _IntType>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:76:3: error: template with C linkage
76 | template<typename _Iterator, typename _Compare>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:100:3: error: template with C linkage
100 | template<typename _InputIterator, typename _Predicate>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:114:3: error: template with C linkage
114 | template<typename _InputIterator, typename _Predicate, typename _Distance>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:138:3: error: template with C linkage
138 | template<typename _ForwardIterator1, typename _ForwardIterator2,
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:190:3: error: template with C linkage
190 | template<typename _ForwardIterator, typename _Integer,
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:223:3: error: template with C linkage
223 | template<typename _RandomAccessIter, typename _Integer,
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:254:3: error: template with C linkage
254 | template<typename _ForwardIterator, typename _Integer,
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:273:3: error: template with C linkage
273 | template<typename _ForwardIterator1, typename _ForwardIterator2,
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:302:3: error: template with C linkage
302 | template<typename _BidirectionalIterator1, typename _BidirectionalIterator2,
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:364:3: error: template with C linkage
364 | template<typename _ForwardIterator1, typename _ForwardIterator2>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:413:3: error: template with C linkage
413 | template<typename _ForwardIterator1, typename _ForwardIterator2,
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:449:3: error: template with C linkage
449 | template<typename _InputIterator, typename _Predicate>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:467:3: error: template with C linkage
467 | template<typename _InputIterator, typename _Predicate>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:486:3: error: template with C linkage
486 | template<typename _InputIterator, typename _Predicate>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:502:3: error: template with C linkage
502 | template<typename _InputIterator, typename _Predicate>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:527:3: error: template with C linkage
527 | template<typename _InputIterator, typename _Predicate>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
/usr/include/c++/11/bits/stl_algo.h:549:3: error: template with C linkage
549 | template<typename _ForwardIterator, typename _Predicate>
| ^~~~~~~~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/11/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/c++config.h:571,
from /usr/include/c++/11/iostream:38,
from file_system.cc:10:
/usr/include/string.h:28:1: note: ‘extern "C"’ linkage started here
28 | __BEGIN_DECLS
| ^~~~~~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from ./strings.h:17,
from /usr/include/string.h:432,
from /usr/include/c++/11/cstring:42,
from file_system.cc:15:
make[2]: *** [../../Makefile.inc:29：file_system.o] 错误 1
make[2]: 离开目录“/home/ylzhang/文档/github/mvs-texturing/mve/libs/util”
make[1]: *** [Makefile:3：all] 错误 2
make[1]: 离开目录“/home/ylzhang/文档/github/mvs-texturing/mve/libs”
make: *** [Makefile:3：all] 错误 2
Sorry, I have never seen this error before, and don't know what it means.
@zyl1223582136, @CHANGXU12, could you please provide some more information such as the operating system and compiler version?
For someone encounters this compilation error. The root cause is that somehow the compiler tries to include utils/strings.h from string.h in C library, casing mixing C and C++ without closing the extern C part. The solution is to rename utils/strings.h to something else like utils/mve_strings.h
from ./strings.h:17, from /usr/include/string.h:432,
Thanks for the comment. It seems we should rename utils/strings.h to something like utils/string_utils.h then to avoid this problem.