此信息来自 llvm有关libcxx的文档.

如果要对clang使用自定义libc ++，则必须指定如下参数:

$ clang ++ -std = c ++ 11 -stdlib = libc ++ -nostdinc ++ -I< path_to_libcxx>/include/c ++/v1 -L< path_to_libcxx>/lib -Wl，-rpath，< path_to_libcxx>/lib main.cpp $ {end_of_compile_line ...}

或者，您可以将库的路径放在LD_LIBRARY_PATH中(假设您在Linux下):

export LD_LIBRARY_PATH =< libcxx-install-prefix>/lib:$ LD_LIBRARY_PATH

并仅使用以下选项进行编译:

$ clang ++ -stdlib = libc ++ -nostdinc ++ -I< path_to_libcxx>/include/c ++/v1 -L< path_to_libcxx>/lib main.cpp -o $ {end_of_compile_line ...} >

I have built libc++ and want to use it when compiling my program ? so I have something like

clang++ -stdlib=~/libc++/libc++.so main.cpp

but this does not work. How can use my custom built libc++ when building the application?

This information comes from llvm documentation about libcxx.

If you want to use a custom libc++ with clang you have to specify argument like this :

$ clang++ -std=c++11 -stdlib=libc++ -nostdinc++ -I<path_to_libcxx>/include/c++/v1 -L<path_to_libcxx>/lib -Wl,-rpath,<path_to_libcxx>/lib main.cpp ${end_of_compile_line...}

Alternatively, you can put the path of your library in LD_LIBRARY_PATH (assuming you are under Linux) :

export LD_LIBRARY_PATH=<libcxx-install-prefix>/lib:$LD_LIBRARY_PATH

and compile using simply these options :

$ clang++ -stdlib=libc++ -nostdinc++ -I<path_to_libcxx>/include/c++/v1 -L<path_to_libcxx>/lib main.cpp -o ${end_of_compile_line...}