Compile CoreCLR on CentOS

Compile CoreCLR on CentOS

After several days of efforts, we finally solved the problem of compiling CoreCLR on CentOS. The final problem was caused by CMAKE_C_FLAGS settings.

Just remove "SET (CMAKE_C_FLAGS_INIT"-Wall-std = c11 ")" from "src/pal/tools/clang-compiler-override.txt ")", add "SET (CMAKE_C_FLAGS"-Wall-std = c11 ")" to "src/pal/tests/CMakeLists.txt" to compile the SDK. (Updated: Later I found a better solution: Just change-std = c11 to-std = gnu11)

The following describes how to compile CoreCLR on CentOS.

CentOS version 7.0.

1) download the llvm source code

wget http://llvm.org/releases/3.5.0/llvm-3.5.0.src.tar.xzmv llvm-3.5.0.src llvm

2) download the clang source code

cd llvm/toolswget http://llvm.org/releases/3.5.0/cfe-3.5.0.src.tar.xztar xf cfe-3.5.0.src.tar.xzmv cfe-3.5.0.src clang

2 +) download the lldb source code and install related components

wget http://llvm.org/releases/3.5.0/lldb-3.5.0.src.tar.xztar -xf lldb-3.5.0.src.tar.xzmv lldb-3.5.0.src lldbyum install swig python-devel libedit-devel

3) download the source code of compiler-rt.

cd ../projectswget http://llvm.org/releases/3.5.0/compiler-rt-3.5.0.src.tar.xztar xf compiler-rt-3.5.0.src.tar.xzmv compiler-rt-3.5.0.src compiler-rt

4) download the libcxxabi source code.

wget http://llvm.org/releases/3.5.0/libcxxabi-3.5.0.src.tar.xztar -xf libcxxabi-3.5.0.src.tar.xzmv libcxxabi-3.5.0.src.tar.xz libcxxabi

5) download the libcxx source code

wget http://llvm.org/releases/3.5.0/libcxx-3.5.0.src.tar.xztar xf  libcxx-3.5.0.src.tar.xzmv libcxx-3.5.0.src libcxx

6) Configure compilation options

cd .../configure --enable-optimized CC=gcc CXX=g++

7) Compile llvm

make -j2

8) install the compiled llvm

make install

(If only lldb is installed, run make install in llvm/tools/lldb)

9) Check out the source code of CoreClr for compilation.

git clone https://github.com/dotnet/coreclr.gitcd coreclr./build.sh

10) install libunwind

wget http://download.savannah.gnu.org/releases/libunwind/libunwind-1.1.tar.gztar -xf libunwind-1.1.tar.gzcd libunwind-1.1./configuremakemake install

If you do not install libunwind, the following error occurs:

/data/git/coreclr/src/pal/src/exception/seh-unwind.cpp:32:10: fatal error: 'libunwind.h' file not found

10) solve the "Native context type is not known" Compilation Error

The following error occurs during compilation:

-- Check size of siginfo_t-- Check size of siginfo_t - failed-- Check size of ucontext_t-- Check size of ucontext_t - failed...[  0%] Building CXX object src/palrt/CMakeFiles/palrt.dir/bstr.cpp.oIn file included from /data/git/coreclr/src/pal/src/arch/i386/context.cpp:25:/data/git/coreclr/src/pal/src/include/pal/context.h:40:2: error: Native context type is not known on this platform!

Modify the src/pal/tools/clang-compiler-override.txt file and remove SET (CMAKE_C_FLAGS_INIT "-Wall-std = c11") to solve this problem.

(Updated: Later I found a better solution: Just change-std = c11 to-std = gnu11)

10) solved the "use of undeclared identifier" Compilation error.

The following error occurs during the compilation process:

/data/git/coreclr/src/pal/tests/palsuite/c_runtime/wprintf/test2/test2.c:31:15: error: use of undeclared      identifier 'u'    DoStrTest(u"foo %s", u"bar", u"foo bar");

Add SET (CMAKE_C_FLAGS "-Wall-std = c11") to src/pal/tests/CMakeLists.txt to solve this problem.

(Updated: Later I found a better solution: Just change-std = c11 to-std = gnu11)

11) Success

Repo successfully built.Product binaries are available at /data/git/coreclr/binaries/Product/amd64/debug