[cfe-users] Problems compiling within the clang source tree

[Eric Christopher]

Yeah, that copy should be into the source tree, not the build tree.

-eric

On Thu, Feb 20, 2014 at 7:28 PM, Adrian Ortega <elfus0.1 at gmail.com> wrote:
> I tried copying both with commands and from the Dolphin file manager (I use
> KDE), same result. I am also adding some commands so you can see the file
> permissions:
>
> blah at blah-desktop:~/Projects/build-llvm/tools/clang/tools > cp -R
> ~/Projects/llvm/tools/clang/examples/clang-interpreter/ .
> blah at blah-desktop:~/Projects/build-llvm/tools/clang/tools > cd
> clang-interpreter/
> blah at blah-desktop:~/Projects/build-llvm/tools/clang/tools/clang-interpreter
>> make
> make: *** No rule to make target
> `/home/aortegag/Projects/llvm/tools/clang/tools/clang-interpreter/Makefile',
> needed by `Makefile'.  Stop.
> blah at blah-desktop:~/Projects/build-llvm/tools/clang/tools/clang-interpreter
>> cd ../LibToolingExample/
> blah at blah-desktop:~/Projects/build-llvm/tools/clang/tools/LibToolingExample
>> make
> make: Nothing to be done for `all'.
> blah at blah-desktop:~/Projects/build-llvm/tools/clang/tools/LibToolingExample
>> make clean
> blah at blah-desktop:~/Projects/build-llvm/tools/clang/tools/LibToolingExample
>> make
> llvm[0]: Compiling Example.cpp for Debug+Asserts build
> llvm[0]: Linking Debug+Asserts executable example
> llvm[0]: ======= Finished Linking Debug+Asserts Executable example
> blah at blah-desktop:~/Projects/build-llvm/tools/clang/tools/LibToolingExample
>>
> blah at blah-desktop:~/Projects/build-llvm/tools/clang/tools/LibToolingExample
>> ll
> total 28
>
> drwxr-xr-x 2 blah blah 4096 feb 20 21:16 Debug+Asserts
> -rw-r--r-- 1 blah blah 4251 feb 17 22:04 Example.cpp
> -rw-r--r-- 1 blah blah  545 feb 17 22:22 Makefile
> -rw-r--r-- 1 blah blah  540 feb 17 22:04 README.md
> -rwxr-xr-x 1 blah blah  128 feb 17 22:25 run_example.sh
> -rw-r--r-- 1 blah blah  118 feb 17 22:04 test.c
> blah at blah-desktop:~/Projects/build-llvm/tools/clang/tools/LibToolingExample
>> ll ../clang-interpreter/
> total 24
> -rw-r--r-- 1 blah blah  578 feb 20 21:13 CMakeLists.txt
> -rw-r--r-- 1 blah blah 5842 feb 20 21:13 main.cpp
> -rw-r--r-- 1 blah blah  968 feb 20 21:13 Makefile
> -rw-r--r-- 1 blah blah  653 feb 20 21:13 README.txt
> -rw-r--r-- 1 blah blah   56 feb 20 21:13 test.c
> blah at blah-desktop:~/Projects/build-llvm/tools/clang/tools/LibToolingExample
>>
>
> The command line I used to configure llvm, and clang was:
>
> ../llvm/configure --enable-targets=host --prefix=$HOME/llvm CC=gcc CXX=g++
> --enable-shared --enable-debug-symbols --enable-jit --enable-doxygen
> --enable-cxx11 --enable-keep-symbols
>
> Yes, I want to step through clang code with the debugger :)
>
> Once again, thanks for the help and your time. I hope this info can help
> spot the problem.
>
>
> On 19/02/14 01:37, Eric Christopher wrote:
>
> Can you give the list of commands you're using to do the "copying" and
> the configuration etc? Might help figure out where you're going wrong.
>
> -eric
>
> On Tue, Feb 18, 2014 at 7:33 PM, Adrian Ortega <elfus0.1 at gmail.com> wrote:
>
> Hello,
>
> I am trying to compile the example 'clang-interpreter' from path
> 'tools/clang/examples'. I copied that folder into the build-llvm folder I
> created for building llvm and clang, specifically in folder
> 'tools/clang/tools/'. When I do 'make' all I get is
>
> make: *** No rule to make target
> `/home/blah/llvm/tools/clang/tools/clang-interpreter/Makefile', needed by
> `Makefile'.  Stop.
>
> I thought that my build was broken, but it was not. I tried downloading this
> example https://github.com/kevinaboos/LibToolingExample and placed it under
> the same 'tools/clang/tools/' folder as the clang interpreter. When I did
> 'make' it just compiled, created the Debug+Asserts folder in
> 'tools/clang/tools/LibToolingExample/Debug+Asserts/' and placed the binary
> under the '$LLVM_ROOT/Debug+Asserts/bin/' folder, and it works fine.
>
> I tried copying the makefile from that LibToolingExample and changed only
> the name of source file to be compiled, it didn't work, I get the same error
> I described above.
>
> From this I can tell that I'm doing something wrong as I don't fully
> understand the llvm-clang build system yet, I was able to compile an example
> but not the example provided in clang directory. Do you have any idea on
> what the problem is? Or do you have a hint of what Makefile or Documentation
> I should read to solve this?
>
> Thanks.
>
> P.D. I am able to able to compile the clang examples out of the llvm-clang
> source tree by providing the correct compiler flags, but I'd like to use the
> llvm-clang build system :)
>
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