Clang and Libc++abi Library installation

System Ubuntu64 bit Clang4.0

Reference:

1 https://github.com/yangyangwithgnu/use_vim_as_ide#0.1

The 7th chapter of the tool chain integration

2. http://clang.llvm.org/get_started.html

where Release Clang Versions

3. http://libcxxabi.llvm.org/

Where get it and get involved!

Start with a separate compilation of CLANG/LLVM and corresponding libraries in 1, and compile the libcxx and Libcxxabi libraries separately, where Libcxxabi compile times is wrong: clang-4.0 link Error

In 3, Libcxx and Libcxxabi libraries can be integrated or compiled separately, so the Libcxxabi library is directly included in the Llvm/projects in 2 and the final integration compiles the entire project.

Finally compile the file with clang++.

Compile the source file as follows:

New_feature.cpp#include <iostream> #include <string>class myclass{public      :            std::string s = " Hello, world\n "; Non-static data member Initializer};int main () {      std::cout << MyClass (). S;}

The compile command is as follows

clang++-std=c++11-stdlib=libc++-werror-weverything-wno-disabled-macro-expansion-wno-float-equal-wno-c++98- Compat-wno-c++98-compat-pedantic-wno-global-constructors-wno-exit-time-destructors-wno-missing-prototypes- Wno-padded-wno-old-style-cast-lc++-lc++abi New_feature.cpp

The resulting a.out file appears

./a.out:error while loading shared libraries:libc++abi.so.1:cannot open Shared object file:no such file or directory

Finally, in the compilation file, several libraries are added to the/usr/lib inside to produce the output.

The Library files are:

Note: It may be necessary to manually copy the header files from the include included in build to/usr/include/c++/v1/, in order to find the directory for libc++ and Libc++abi header files.

The specific commands are as follows:

2. Get the required tools.
   • See Getting Started with the LLVM system-requirements.
   • Note also that Python was needed for running the test suite. Get it At:http://www.python.org/download
   • Standard build process uses CMake. Get it At:http://www.cmake.org/download
4. Check out LLVM:
   • Change directory to where you want the LLVM directory placed.
   • SVN Co http://llvm.org/svn/llvm-project/llvm/trunk LLVM
6. Check out Clang:
   • CD Llvm/tools
   • SVN Co http://llvm.org/svn/llvm-project/cfe/trunk clang
   • Cd.. /..
8. Check out extra Clang tools: (optional)
   • CD Llvm/tools/clang/tools
   • SVN Co http://llvm.org/svn/llvm-project/clang-tools-extra/trunk extra
   • Cd.. /.. /.. /..
10. Check out Compiler-rt (optional):
    • CD llvm/projects
    • SVN Co http://llvm.org/svn/llvm-project/compiler-rt/trunk compiler-rt
    • Cd.. /..
12. Check out Libcxx: (Required-to-build and run Compiler-rt tests on OS X, optional otherwise)
    • CD ll Vm/projects
    • SVN co http://llvm.org/svn/llvm-project/libcxx/trunk libcxx
    • Span style= "Background-color: #ff0000;" > SVN co http://llvm.org/svn/llvm-project/libcxxabi/trunk libcxxabi
    • Cd.. /..   
14. Build LLVM and Clang:
    • mkdir Build (In-tree build is not supported)
    • CD Build
    • Cmake-g "Unix makefiles". /llvm
    • Make
    • This builds both LLVM and Clang for debug mode.
    • Note:for subsequent Clang development, you can just run make Clang.
    • CMake allows generate project files for several ides:xcode, Eclipse CDT4, Codeblocks, Qt-creator (Use the Codebloc KS generator), KDEVELOP3. For more details see Building LLVM with CMake page.

Clang and Libc++abi Library installation