clang 3.8 makeファイルが失敗する

Question

私の頭を3時間以上擦った後、ついに私はあきらめて、皆さんに助けを求めることを決めました。

私は1つの実行可能ファイルにコンパイルするいくつかのファイルがあります。 -stdlib=libc++ flagで

、私はいくつかの検索を行なったし、別のSOの質問susggestsとして

/usr/include/c++/v1/string:1938:44: error: 'basic_string<_CharT, _Traits, _Allocator>' is missing exception specification 'noexcept(is_nothrow_copy_constructible<allocator_type>::value)' 
basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a) 
             ^
/usr/include/c++/v1/string:1326:40: note: previous declaration is here 
    _LIBCPP_INLINE_VISIBILITY explicit basic_string(const allocator_type& __a) 

を取得します。 -stdlib=libstdc++に変更されました。コンソールにはたくさんの出力があります。

/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:382: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:382: undefined reference to `std::allocator<char>::~allocator()' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:382: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:382: undefined reference to `std::allocator<char>::~allocator()' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:399: undefined reference to `std::allocator<char>::allocator()' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:399: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:399: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:399: undefined reference to `std::allocator<char>::~allocator()' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:399: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:399: undefined reference to `std::allocator<char>::~allocator()' 
png.o: In function `__cxx_global_var_init': 
/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/iostream:74: undefined reference to `std::ios_base::Init::Init()' 
/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/iostream:74: undefined reference to `std::ios_base::Init::~Init()' 
png.o: In function `epng_err(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)': 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:18: undefined reference to `std::cerr' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:19: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:19: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <char, std::char_traits<char>, std::allocator<char> >(std::basic_ostream<char, std::char_traits<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:19: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)' 
/home/bobby/Documents/freshmen/225/cs225/lab_intro/png.cpp:19: undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))' 
png.o: In function `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > std::operator+<char, std::char_traits<char>, std::allocator<char> >(char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)': 
/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/basic_string.tcc:1158: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string()' 
/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/basic_string.tcc:1159: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::size() const' 
/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/basic_string.tcc:1159: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::reserve(unsigned long)' 
/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/basic_string.tcc:1160: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::append(char const*, unsigned long)' 
/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/basic_string.tcc:1161: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::append(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' 
/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/basic_string.tcc:1163: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()' 
/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/basic_string.tcc:1163: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()' 
clang: error: linker command failed with exit code 1 (use -v to see invocation) 

これは、吐き出された情報の最後の部分です。

ファイルを作成しますが、ここで

EXENAME = lab_intro 
OBJS = main.o png.o rgbapixel.o 

CXX = clang++ 
CXXFLAGS = -std=c++1y -stdlib=libstdc++ -c -g -O0 -Wall -Wextra -pedantic 
LD = clang++ 
LDFLAGS = -std=c++1y -stdlib=libc++ -lpng -lc++abi -lpthread 

all : $(EXENAME) 

$(EXENAME) : $(OBJS) 
    $(LD) $(OBJS) $(LDFLAGS) -o $(EXENAME) 

main.o : main.cpp png.h rgbapixel.h 
    $(CXX) $(CXXFLAGS) main.cpp 

png.o : png.cpp png.h rgbapixel.h 
    $(CXX) $(CXXFLAGS) png.cpp 

rgbapixel.o : rgbapixel.cpp rgbapixel.h 
    $(CXX) $(CXXFLAGS) rgbapixel.cpp 

clean : 
    -rm -f *.o $(EXENAME) 

オペレーティングシステムで必要なすべての依存関係をインストールして、Ubuntuの16.04LTSである（または私は私が正しくインストールさだと思います）。

FileTree

lab_intro/ 
    Makefile 
    main.cpp 
    png.cpp 
    png.h 
    rgbapixel.h 
    rgbapixel.cpp 
    sample.png 

Answer 1

あなたは、ビルドラインに次のペアの1を追加する必要があります。

• -Lは/ usr/libに-lstdC++

• -Lは/ usr/lib -llibC++