'<some system header>: error: ‘<insert function here>’ is not a member of ‘std’ ' after moving source file
'<some system header>: error: ‘<insert function here>’ is not a member of ‘std’ ' after moving source file
在将源文件从我的项目移动到子目录后，gcc 吐出一个奇怪的错误（它之前编译得很好）
make[3]: Entering directory '/home/rd/Desktop/fh/bf4/bbx/o4x/server/server_app/src'
CXX main.o
In file included from /usr/include/c++/9/bits/stl_algobase.h:69,
from /usr/include/c++/9/memory:62,
from /usr/include/c++/9/memory_resource:37,
from main.h:5,
from main.cpp:1:
./debug/debug.h:14:28: error: variable or field ‘debug_queue_addN’ declared void
14 | void debug_queue_addN(std::string msg);
| ^~~~~~
compilation terminated due to -Wfatal-errors.
我确实通过在所述头文件中包含 设法 'resolve' 这个问题，但是出现了一个新的甚至更奇怪的错误。
make[3]: Entering directory '/home/rd/Desktop/fh/bf4/bbx/o4x/server/server_app/src'
CXX main.o
In file included from /usr/include/c++/9/bits/stl_algobase.h:69,
from /usr/include/c++/9/memory:62,
from /usr/include/c++/9/memory_resource:37,
from main.h:5,
from main.cpp:1:
./debug/debug.h:14:28: error: variable or field ‘debug_queue_addN’ declared void
14 | void debug_queue_addN(std::string msg);
| ^~~~~~
compilation terminated due to -Wfatal-errors.
在这一点上，我什至尝试在任何其他地方包含之前包含 < algorithm >，但它根本没有帮助。相反，它抛出了这个更奇怪的错误...
make[3]: Entering directory '/home/rd/Desktop/fh/bf4/bbx/o4x/server/server_app/src'
CXX main.o
In file included from /usr/include/c++/9/bits/basic_string.h:48,
from /usr/include/c++/9/string:55,
from ./debug/debug.h:4,
from /usr/include/c++/9/bits/stl_algobase.h:69,
from /usr/include/c++/9/bits/char_traits.h:39,
from /usr/include/c++/9/ios:40,
from /usr/include/c++/9/ostream:38,
from /usr/include/c++/9/iostream:39,
from main.cpp:2:
/usr/include/c++/9/string_view: In member function ‘std::basic_string_view<_CharT, _Traits>::size_type std::basic_string_view<_CharT, _Traits>::copy(_CharT*, std::basic_string_view<_CharT, _Traits>::size_type, std::basic_string_view<_CharT, _Traits>::size_type) const’:
/usr/include/c++/9/string_view:260:32: error: ‘min’ is not a member of ‘std’; did you mean ‘minus’?
260 | const size_type __rlen = std::min(__n, _M_len - __pos);
| ^~~
| minus
compilation terminated due to -Wfatal-errors.
现在，有人知道为什么会发生这种情况/我能做些什么来解决这个问题吗？
此外，这是错误输出中提到的代码。
main.cpp
#include "main.h"
#include "server.h"
#include "config.h"
#include "debug/debug.h"
#include "pidfile.h"
#include "messages.h"
#include <cstring>
#include <iostream>
#include <thread>
#include <algorithm>
[CUT HERE]
main.h
#ifndef __MAIN_H___
#define __MAIN_H___
#define __cpp_transactional_memory 0
#include <memory_resource>
extern std::pmr::synchronized_pool_resource* _upstream_resource;
extern std::pmr::pool_options _general_pool_options;
#endif
debug/debug.h
#ifndef __DEBUG_H__
#define __DEBUG_H__ 1
#include <string> // I added this as a 'solution' to the first mentioned problem
#include "config.h"
#ifdef DEBUGBUILD
#define dbg_out(a) debug_queue_addN(a)
#define dbg_sout(func, msg) this->debug_queue_add(func, msg)
#define dbg_csout(inh, func, msg) debug_queue_addI(inh, func, msg)
#define fatal_err_out(a) std::cout << a
void debug_print();
void debug_queue_addN(std::string msg);
void debug_queue_addI(std::string inh, std::string func, std::string msg);
#else
#define dbg_out(a)
#define dbg_sout(func, msg)
#define dbg_csout(inh, func, msg)
#define fatal_err_out(a) std::cerr << a
#endif
#endif
最后 Makefile.am
SUBDIRS =
EXTRA_DIST =
bin_PROGRAMS =
#check_PROGRAMS =
#TESTS =
GENERAL_GCC_FLAGS = -std=gnu++17 \
-Og -falign-functions \
-falign-jumps -falign-labels \
-falign-loops -fwrapv \
-fbranch-target-load-optimize \
-fasynchronous-unwind-tables \
-fcode-hoisting -fdce -fdse \
-fgcse -fhoist-adjacent-loads \
-fipa-icf -fipa-cp -fipa-pta -fipa-vrp \
-fplt -fpeephole -freorder-functions \
-fstack-protector-all -m80387 -mhard-float \
-malign-double -mcld -mcx16 -msahf -mmovbe -mcrc32 \
-mrecip -mprefer-avx128 -mmmx -msse4.2 -mavx512vbmi \
-msha -maes -mrdrnd -mf16c -pthread -mpc80 -m64 -g3 -fconcepts \
[CUT OUT a whole lot of -Wxxxxx]
# --param asan-stack=1 --param asan-instrument-allocas=1 \
# --param asan-globals=1 --param asan-instrument-writes=1 \
# --param asan-instrument-reads=1 --param asan-memintrin=1 \
# --param asan-use-after-return=1 --param asan-instrumentation-with-call-threshold=1 \
# -fsanitize=address
GENERAL_FLAGS = $(GENERAL_GCC_FLAGS)
AM_CFLAGS = $(WARNCFLAGS) $(GENERAL_FLAGS)
AM_CXXFLAGS = $(WARNCXXFLAGS) $(CXX1XCXXFLAGS) $(GENERAL_FLAGS)
AM_CPPFLAGS = $(GENERAL_FLAGS)
LDADD = @LIBXML2_LIBS@ \
@LIBEV_LIBS@ \
@OPENSSL_LIBS@ \
@SYSTEMD_LIBS@ \
@JANSSON_LIBS@ \
@ZLIB_LIBS@ \
@APPLDFLAGS@
bin_PROGRAMS += server_app
server_class_packetEx_SOURCES = packets/dcs_do.cpp packets/hbp_do.cpp packets/ack_do.cpp
server_class_SOURCES = server.cpp perform_commands.cpp handle_commands.cpp server_message_byte_strs.cpp \
networking.cpp messages.cpp packet_check.cpp send_packages.cpp errors.cpp $(server_class_packetEx_SOURCES)
auth_class_SOURCES = auth/authentication.cpp
debug_SOURCES = debug/debug.cpp
server_app_SOURCES = main.cpp export.cpp pidfile.cpp $(server_class_SOURCES) $(auth_class_SOURCES)
if DEBUGBUILD
server_app_SOURCES += $(debug_SOURCES)
endif
从错误来看，您的 debug/debug.h 似乎正在被 /usr/include/c++/9/bits/stl_algobase.h 拾取。这与实际的 /usr/include/c++/9/debug/debug.h.
冲突
至少在我的系统上，这些包含是使用 #include <...> 形式完成的，即通过搜索 system 包含路径。看起来您添加了将代码也放在该路径上的编译标志。也许像 -I. 一样天真？
要解决此问题，您应该删除额外的 -I 标志或重命名您的 debug/debug.h 文件。
在将源文件从我的项目移动到子目录后，gcc 吐出一个奇怪的错误（它之前编译得很好）
make[3]: Entering directory '/home/rd/Desktop/fh/bf4/bbx/o4x/server/server_app/src'
CXX main.o
In file included from /usr/include/c++/9/bits/stl_algobase.h:69,
from /usr/include/c++/9/memory:62,
from /usr/include/c++/9/memory_resource:37,
from main.h:5,
from main.cpp:1:
./debug/debug.h:14:28: error: variable or field ‘debug_queue_addN’ declared void
14 | void debug_queue_addN(std::string msg);
| ^~~~~~
compilation terminated due to -Wfatal-errors.
我确实通过在所述头文件中包含
make[3]: Entering directory '/home/rd/Desktop/fh/bf4/bbx/o4x/server/server_app/src'
CXX main.o
In file included from /usr/include/c++/9/bits/stl_algobase.h:69,
from /usr/include/c++/9/memory:62,
from /usr/include/c++/9/memory_resource:37,
from main.h:5,
from main.cpp:1:
./debug/debug.h:14:28: error: variable or field ‘debug_queue_addN’ declared void
14 | void debug_queue_addN(std::string msg);
| ^~~~~~
compilation terminated due to -Wfatal-errors.
在这一点上，我什至尝试在任何其他地方包含之前包含 < algorithm >，但它根本没有帮助。相反，它抛出了这个更奇怪的错误...
make[3]: Entering directory '/home/rd/Desktop/fh/bf4/bbx/o4x/server/server_app/src'
CXX main.o
In file included from /usr/include/c++/9/bits/basic_string.h:48,
from /usr/include/c++/9/string:55,
from ./debug/debug.h:4,
from /usr/include/c++/9/bits/stl_algobase.h:69,
from /usr/include/c++/9/bits/char_traits.h:39,
from /usr/include/c++/9/ios:40,
from /usr/include/c++/9/ostream:38,
from /usr/include/c++/9/iostream:39,
from main.cpp:2:
/usr/include/c++/9/string_view: In member function ‘std::basic_string_view<_CharT, _Traits>::size_type std::basic_string_view<_CharT, _Traits>::copy(_CharT*, std::basic_string_view<_CharT, _Traits>::size_type, std::basic_string_view<_CharT, _Traits>::size_type) const’:
/usr/include/c++/9/string_view:260:32: error: ‘min’ is not a member of ‘std’; did you mean ‘minus’?
260 | const size_type __rlen = std::min(__n, _M_len - __pos);
| ^~~
| minus
compilation terminated due to -Wfatal-errors.
现在，有人知道为什么会发生这种情况/我能做些什么来解决这个问题吗？
此外，这是错误输出中提到的代码。
main.cpp
#include "main.h"
#include "server.h"
#include "config.h"
#include "debug/debug.h"
#include "pidfile.h"
#include "messages.h"
#include <cstring>
#include <iostream>
#include <thread>
#include <algorithm>
[CUT HERE]
main.h
#ifndef __MAIN_H___
#define __MAIN_H___
#define __cpp_transactional_memory 0
#include <memory_resource>
extern std::pmr::synchronized_pool_resource* _upstream_resource;
extern std::pmr::pool_options _general_pool_options;
#endif
debug/debug.h
#ifndef __DEBUG_H__
#define __DEBUG_H__ 1
#include <string> // I added this as a 'solution' to the first mentioned problem
#include "config.h"
#ifdef DEBUGBUILD
#define dbg_out(a) debug_queue_addN(a)
#define dbg_sout(func, msg) this->debug_queue_add(func, msg)
#define dbg_csout(inh, func, msg) debug_queue_addI(inh, func, msg)
#define fatal_err_out(a) std::cout << a
void debug_print();
void debug_queue_addN(std::string msg);
void debug_queue_addI(std::string inh, std::string func, std::string msg);
#else
#define dbg_out(a)
#define dbg_sout(func, msg)
#define dbg_csout(inh, func, msg)
#define fatal_err_out(a) std::cerr << a
#endif
#endif
最后 Makefile.am
SUBDIRS =
EXTRA_DIST =
bin_PROGRAMS =
#check_PROGRAMS =
#TESTS =
GENERAL_GCC_FLAGS = -std=gnu++17 \
-Og -falign-functions \
-falign-jumps -falign-labels \
-falign-loops -fwrapv \
-fbranch-target-load-optimize \
-fasynchronous-unwind-tables \
-fcode-hoisting -fdce -fdse \
-fgcse -fhoist-adjacent-loads \
-fipa-icf -fipa-cp -fipa-pta -fipa-vrp \
-fplt -fpeephole -freorder-functions \
-fstack-protector-all -m80387 -mhard-float \
-malign-double -mcld -mcx16 -msahf -mmovbe -mcrc32 \
-mrecip -mprefer-avx128 -mmmx -msse4.2 -mavx512vbmi \
-msha -maes -mrdrnd -mf16c -pthread -mpc80 -m64 -g3 -fconcepts \
[CUT OUT a whole lot of -Wxxxxx]
# --param asan-stack=1 --param asan-instrument-allocas=1 \
# --param asan-globals=1 --param asan-instrument-writes=1 \
# --param asan-instrument-reads=1 --param asan-memintrin=1 \
# --param asan-use-after-return=1 --param asan-instrumentation-with-call-threshold=1 \
# -fsanitize=address
GENERAL_FLAGS = $(GENERAL_GCC_FLAGS)
AM_CFLAGS = $(WARNCFLAGS) $(GENERAL_FLAGS)
AM_CXXFLAGS = $(WARNCXXFLAGS) $(CXX1XCXXFLAGS) $(GENERAL_FLAGS)
AM_CPPFLAGS = $(GENERAL_FLAGS)
LDADD = @LIBXML2_LIBS@ \
@LIBEV_LIBS@ \
@OPENSSL_LIBS@ \
@SYSTEMD_LIBS@ \
@JANSSON_LIBS@ \
@ZLIB_LIBS@ \
@APPLDFLAGS@
bin_PROGRAMS += server_app
server_class_packetEx_SOURCES = packets/dcs_do.cpp packets/hbp_do.cpp packets/ack_do.cpp
server_class_SOURCES = server.cpp perform_commands.cpp handle_commands.cpp server_message_byte_strs.cpp \
networking.cpp messages.cpp packet_check.cpp send_packages.cpp errors.cpp $(server_class_packetEx_SOURCES)
auth_class_SOURCES = auth/authentication.cpp
debug_SOURCES = debug/debug.cpp
server_app_SOURCES = main.cpp export.cpp pidfile.cpp $(server_class_SOURCES) $(auth_class_SOURCES)
if DEBUGBUILD
server_app_SOURCES += $(debug_SOURCES)
endif
从错误来看，您的 debug/debug.h 似乎正在被 /usr/include/c++/9/bits/stl_algobase.h 拾取。这与实际的 /usr/include/c++/9/debug/debug.h.
至少在我的系统上，这些包含是使用 #include <...> 形式完成的，即通过搜索 system 包含路径。看起来您添加了将代码也放在该路径上的编译标志。也许像 -I. 一样天真？
要解决此问题，您应该删除额外的 -I 标志或重命名您的 debug/debug.h 文件。