Trouble building clang trunk from source

Clang Frontend Using Clang
1

Hi,

I'm trying to build clang from source using the instructions
found here [1], but I'm getting the following error:

make[3]: Entering directory `/home/nr/llvm-build/tools/clang/runtime'
make[4]: Entering directory `/home/nr/llvm-build/tools/clang/runtime/compiler-rt'
warning: clang_darwin.mk: dropping arch 'i386' from lib 'eprintf'
warning: clang_darwin.mk: dropping arch 'i386' from lib '10.4'
warning: clang_darwin.mk: dropping arch 'x86_64' from lib '10.4'
warning: clang_darwin.mk: dropping arch 'i386' from lib 'ios'
warning: clang_darwin.mk: dropping arch 'x86_64' from lib 'ios'
warning: clang_darwin.mk: dropping arch 'armv7' from lib 'ios'
warning: clang_darwin.mk: dropping arch 'i386' from lib 'osx'
warning: clang_darwin.mk: dropping arch 'x86_64' from lib 'osx'
warning: clang_darwin.mk: dropping arch 'armv7' from lib 'cc_kext'
warning: clang_darwin.mk: dropping arch 'i386' from lib 'cc_kext'
warning: clang_darwin.mk: dropping arch 'x86_64' from lib 'cc_kext'
warning: clang_darwin.mk: dropping arch 'x86_64' from lib 'cc_kext_ios5'
warning: clang_darwin.mk: dropping arch 'armv7' from lib 'cc_kext_ios5'
warning: clang_darwin.mk: dropping arch 'i386' from lib 'profile_osx'
warning: clang_darwin.mk: dropping arch 'x86_64' from lib 'profile_osx'
warning: clang_darwin.mk: dropping arch 'i386' from lib 'profile_ios'
warning: clang_darwin.mk: dropping arch 'x86_64' from lib 'profile_ios'
warning: clang_darwin.mk: dropping arch 'armv7' from lib 'profile_ios'
warning: clang_darwin.mk: dropping arch 'i386' from lib 'asan_osx_dynamic'
warning: clang_darwin.mk: dropping arch 'x86_64' from lib 'asan_osx_dynamic'
warning: clang_darwin.mk: dropping arch 'i386' from lib 'ubsan_osx'
warning: clang_darwin.mk: dropping arch 'x86_64' from lib 'ubsan_osx'
make[5]: Entering directory `/home/nr/llvm/projects/compiler-rt'
make[5]: Nothing to be done for `clang_linux'.
make[5]: Leaving directory `/home/nr/llvm/projects/compiler-rt'
llvm[4]: Copying runtime library linux/full-x86_64 to build dir
cp: cannot stat `/home/nr/llvm-build/tools/clang/runtime/compiler-rt/clang_linux/full-x86_64/libcompiler_rt.a': No such file or directory
make[4]: *** [/home/nr/llvm-build/Release+Asserts/lib/clang/3.4/lib/linux/libclang_rt.full-x86_64.a] Error 1
rm /home/nr/llvm-build/Release+Asserts/lib/clang/3.4/lib/linux/.dir
make[4]: Leaving directory `/home/nr/llvm-build/tools/clang/runtime/compiler-rt'
make[3]: *** [compiler-rt/.makeall] Error 2
make[3]: Leaving directory `/home/nr/llvm-build/tools/clang/runtime'
make[2]: *** [all] Error 1
make[2]: Leaving directory `/home/nr/llvm-build/tools/clang'
make[1]: *** [clang/.makeall] Error 2
make[1]: Leaving directory `/home/nr/llvm-build/tools'
make: *** [all] Error 1

Any ideas as to what is going wrong?

Thanks,
Nate

[1] http://clang.llvm.org/get_started.html

2

I'm trying to build clang from source using the instructions
found here [1], but I'm getting the following error:

I guess I should mention that I'm on 64-bit Ubuntu 10.04.

Thanks,
Nate

3

The 3.3 release works fine, by the way. Will use that for now.

Thanks,
Nate

4

The 3.3 release works fine, by the way. Will use that for now.

Thanks,
Nate

Hi Nate,

I was also able to build using those same instructions:

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

However, when using the newly built clang to compile,
it worked OK; however, the link did not:

make -f simple.mk test
/home/evansl/dwnlds/llvm/releases/3.3/out/Release+Asserts/build/Release+Asserts/bin/clang
-c test.cpp
/home/evansl/dwnlds/llvm/releases/3.3/out/Release+Asserts/build/Release+Asserts/bin/clang
test.o -o test.exe
test.o: In function `main':
test.cpp:(.text+0xc): undefined reference to `std::cout'
test.cpp:(.text+0x20): 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*)'

test.o: In function `__cxx_global_var_init':
test.cpp:(.text.startup+0x11): undefined reference to
`std::ios_base::Init::Init()'
test.cpp:(.text.startup+0x19): undefined reference to
`std::ios_base::Init::~Init()'
clang: error: linker command failed with exit code 1 (use -v to see
invocation)
make: *** [test] Error 1

Compilation exited abnormally with code 2 at Tue Jul 2 07:46:49

Anyone have any ideas whats missing. Should I also run install as
indicated here:

http://www.domaigne.com/blog/computing/install-latest-llvmclang-on-fedora/

?

-regards,
Larry

?

5

Apparently running `make install` doesn't result in a usable clang
either:

6

Hi Larry,

You need use 'clang++' to link programs that include C++ translation units.

Dmitri