Makefile: `__TMC_END__' 的多重定义答案

【问题标题】：Makefile: multiple definition of `__TMC_END__'Makefile: `__TMC_END__' 的多重定义
【发布时间】：2015-02-19 14:20:04
【问题描述】：

在我之前询问过的question 中，我尝试将bin 和obj 文件夹与我的cpp 分开。我的依赖文件（main.d）将存储在obj 目录中。但是，我的尝试遇到了问题。 Linker 认为某些东西没有直接链接：

/tmp/cc7WetlH.o：在函数`__static_initialization_and_destruction_0'中：

/usr/include/boost/system/error_code.hpp:222: 未定义对 `boost::system::generic_category()' 的引用

SOURCES := main.cpp
BINDIR:= ./bin
OBJDIR:= ./bin/obj
OBJECTS := $(OBJDIR)/$(SOURCES:.cpp=.o)
DEPFILES:= $(OBJECTS:.o=.d)

CXX := g++
CXXFLAGS := -g -Wall -Wfatal-errors -std=c++11 -MD -MP
LIBS:= -lboost_filesystem -lboost_system 


all: run

# Link the executable
run: $(OBJECTS)
    $(CXX) $(LDFLAGS) $^ -o $(BINDIR)/$@ $(LIBS)

$(OBJDIR)/%.o: %.cpp
    $(CXX) $(CXXFLAGS) -MF $(OBJDIR)/$*.d -o $@  $<

-include $(DEPFILES)

为了解决这个问题，我将链接库添加到编译器（对我来说这没有意义）：

$(OBJDIR)/%.o: %.cpp
    $(CXX) $(CXXFLAGS) -MF $(OBJDIR)/$*.d -o $@  $< $(LIBS)

并且对象已成功创建，但是链接器认为某些内容已定义多次：

g++  bin/obj/main.o -o ./bin/run -lboost_filesystem -lboost_system 
bin/obj/main.o: In function `_start':
(.text+0x0): multiple definition of `_start'
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 0 has invalid symbol index 11
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 1 has invalid symbol index 12
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 2 has invalid symbol index 2
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 3 has invalid symbol index 2
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 4 has invalid symbol index 11
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 5 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 6 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 7 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 8 has invalid symbol index 12
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 9 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 10 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 11 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 12 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 13 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 14 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 15 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 16 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 17 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 18 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 19 has invalid symbol index 21
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_line): relocation 0 has invalid symbol index 2
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/crt1.o:/build/buildd/eglibc-2.19/csu/../sysdeps/x86_64/start.S:118: first defined here
bin/obj/main.o: In function `_fini':
(.fini+0x0): multiple definition of `_fini'
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crti.o(.debug_info): relocation 0 has invalid symbol index 7
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crti.o(.debug_info): relocation 1 has invalid symbol index 8
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crti.o(.debug_info): relocation 2 has invalid symbol index 9
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crti.o(.debug_ranges): relocation 0 has invalid symbol index 4
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crti.o(.debug_ranges): relocation 1 has invalid symbol index 4
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crti.o(.debug_ranges): relocation 2 has invalid symbol index 5
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crti.o(.debug_ranges): relocation 3 has invalid symbol index 5
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/crti.o:(.fini+0x0): first defined here
bin/obj/main.o:(.rodata+0x0): multiple definition of `_IO_stdin_used'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/crt1.o:(.rodata.cst4+0x0): first defined here
bin/obj/main.o: In function `data_start':
(.data+0x0): multiple definition of `__data_start'
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/crt1.o:(.data+0x0): first defined here
bin/obj/main.o: In function `data_start':
(.data+0x8): multiple definition of `__dso_handle'
/usr/lib/gcc/x86_64-linux-gnu/4.8/crtbegin.o:(.data+0x0): first defined here
bin/obj/main.o: In function `_init':
(.init+0x0): multiple definition of `_init'
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crti.o(.debug_line): relocation 0 has invalid symbol index 4
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crti.o(.debug_line): relocation 1 has invalid symbol index 5
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/crti.o:/build/buildd/eglibc-2.19/csu/../sysdeps/x86_64/crti.S:64: first defined here
/usr/lib/gcc/x86_64-linux-gnu/4.8/crtend.o:(.tm_clone_table+0x0): multiple definition of `__TMC_END__'
bin/obj/main.o:(.data+0x28): first defined here
/usr/bin/ld: error in bin/obj/main.o(.eh_frame); no .eh_frame_hdr table will be created.
collect2: error: ld returned 1 exit status
make: *** [run] Error 1

如何解决这个错误？

【问题讨论】：

如果您在$(SOURCES) 中有多个条目，则此行OBJECTS := $(OBJDIR)/$(SOURCES:.cpp=.o) 将无法正常工作。你想要$(addprefix $(OBJDIR)/,$(SOURCES:.cpp=.o)) 那里。
另外，-o $(BINDIR)/$@ 在 makefile 中是个坏主意。配方应始终完全生成$@，否则不会按照您期望的方式进行操作。请参阅Rules of Makefiles 了解更多信息。
@EtanReisner 非常感谢。您介意建议我另一种方法来生成BINDIR 中的可执行文件吗？
all: $(BINDIR)/run 和 $(BINDIR)/run: $(OBJECTS) 然后只是 -o $@。

标签： c++ boost makefile g++

【解决方案1】：

将链接器参数添加到编译行没有任何意义，您的直觉是正确的。

%.o 规则的问题在于您忘记包含 -c 标志来告诉编译器在链接之前停止。

添加，删除链接器参数，看看你的问题是否仍然存在。

【讨论】：