Hi,

I'm trying to build ldc on a cluster, so I have no root access to install llvm or the required libraries in the usual places. I've installed both in my home directory, and I think llvm-config is working OK, the following commands give the following output:

/home/abrown/software/ldc/llvm/bin/llvm-config --version
3.5.0

/home/abrown/software/ldc/llvm/bin/llvm-config --components
 all all-targets analysis asmparser asmprinter bitreader bitwriter codegen core debuginfo engine executionengine instcombine instrumentation interpreter ipa ipo irreader jit lineeditor linker lto mc mcanalysis mcdisassembler mcjit mcparser native nativecodegen objcarcopts object option profiledata runtimedyld scalaropts selectiondag support tablegen target transformutils vectorize x86 x86asmparser x86asmprinter x86codegen x86desc x86disassembler x86info x86utils

But when it comes to running cmake, I don't think it's finding llvm:

cmake -L -DLLVM_ROOT_DIR="/home/abrown/software/ldc/llvm/" -DLLVM_CONFIG="/home/abrown/software/ldc/llvm/bin" -DLIBCONFIG_LIBRARY="/home/abrown/software/ldc/lib" -DLIBCONFIG_INCLUDE_DIR="/home/abrown/software/ldc/lib" ..

CMake Error at cmake/Modules/FindLLVM.cmake:141 (string):
  string sub-command REGEX, mode MATCHALL needs at least 5 arguments total to
  command.
Call Stack (most recent call first):
  cmake/Modules/FindLLVM.cmake:175 (llvm_set_libs)
  CMakeLists.txt:18 (find_package)


CMake Error at /software/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:136 (message):
  Could NOT find LLVM (missing: LLVM_ROOT_DIR LLVM_HOST_TARGET) (Required is
  at least version "3.1")
Call Stack (most recent call first):
  /software/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:343 (_FPHSA_FAILURE_MESSAGE)
  cmake/Modules/FindLLVM.cmake:197 (find_package_handle_standard_args)
  CMakeLists.txt:18 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/abrown/software/ldc/ldc/build/CMakeFiles/CMakeOutput.log".
-- Cache values
CMAKE_BUILD_TYPE:STRING=
CMAKE_INSTALL_PREFIX:PATH=/usr/local
LLVM_CONFIG:FILEPATH=/home/abrown/software/ldc/llvm/bin

I've also tried setting LLVM_ROOT_DIR and LLVM_CONFIG as environment variables, but that doesn't work.

Could anyone help me out with where I'm going wrong?

Thanks very much

Andrew Brown

Hi Andrew,

On Tuesday, 26 May 2015 at 12:50:15 UTC, Andrew Brown wrote:
> But when it comes to running cmake, I don't think it's finding llvm:
>
> cmake -L -DLLVM_ROOT_DIR="/home/abrown/software/ldc/llvm/" -DLLVM_CONFIG="/home/abrown/software/ldc/llvm/bin" -DLIBCONFIG_LIBRARY="/home/abrown/software/ldc/lib" -DLIBCONFIG_INCLUDE_DIR="/home/abrown/software/ldc/lib" ..

LLVM_CONFIG expects the actual path of the binary itself, i.e. in this case …/bin/llvm-config. This is because some distributions rename (e.g. postfix) their LLVM tool names.

You should only need to specify one of the two variables, though. If you just set LLVM_CONFIG to the full path, it should automatically find the rest.

 — David

Thank you very much, that worked perfectly. I still had trouble with the libraries though, before I set the following flags the make command stopped at about 14%:

-DLIBCONFIG_LIBRARY="/home/abrown/software/ldc/libs/lib/libconfig.a" -DLIBCONFIG_INCLUDE_DIR="/home/abrown/software/ldc/libs/include"

When I compile my software however, I get warnings such as:

/home/abrown/software/ldc/ldc/build/runtime/../lib/libphobos2-ldc.a(curl.o): In function `_D3std3net4curl4HTTP18_sharedStaticCtor1FZv':
/home/abrown/software/ldc/ldc/runtime/phobos/std/net/curl.d:(.text._D3std3net4curl4HTTP18_sharedStaticCtor1FZv+0x10): undefined reference to `curl_version_info'

Is tihs because it doesn't like the version of libcurl installed on my system? Could you point me towards a repository where I can download and install this and how I should adjust the flags to cmake (I'm on RHEL 6 if that's important)?

Thank you very much for helping me, would it be handy for me to update the wiki to reflect what I've learnt?

Andrew

On Tuesday, 26 May 2015 at 12:52:59 UTC, David Nadlinger wrote:
> Hi Andrew,
>
> On Tuesday, 26 May 2015 at 12:50:15 UTC, Andrew Brown wrote:
>> But when it comes to running cmake, I don't think it's finding llvm:
>>
>> cmake -L -DLLVM_ROOT_DIR="/home/abrown/software/ldc/llvm/" -DLLVM_CONFIG="/home/abrown/software/ldc/llvm/bin" -DLIBCONFIG_LIBRARY="/home/abrown/software/ldc/lib" -DLIBCONFIG_INCLUDE_DIR="/home/abrown/software/ldc/lib" ..
>
> LLVM_CONFIG expects the actual path of the binary itself, i.e. in this case …/bin/llvm-config. This is because some distributions rename (e.g. postfix) their LLVM tool names.
>
> You should only need to specify one of the two variables, though. If you just set LLVM_CONFIG to the full path, it should automatically find the rest.
>
>  — David

I managed to get things working, I just need to add a -L-lcurl flag when I compile. Thanks for helping, I was very stuck. If those cmake flags seem sensible, I'm happy to update the wiki (I found the description of LLVM_CONFIG a bit ambiguous as it was).

Best

Andrew

On Tuesday, 26 May 2015 at 14:18:03 UTC, Andrew Brown wrote:
> Thank you very much, that worked perfectly. I still had trouble with the libraries though, before I set the following flags the make command stopped at about 14%:
>
> -DLIBCONFIG_LIBRARY="/home/abrown/software/ldc/libs/lib/libconfig.a" -DLIBCONFIG_INCLUDE_DIR="/home/abrown/software/ldc/libs/include"
>
> When I compile my software however, I get warnings such as:
>
> /home/abrown/software/ldc/ldc/build/runtime/../lib/libphobos2-ldc.a(curl.o): In function `_D3std3net4curl4HTTP18_sharedStaticCtor1FZv':
> /home/abrown/software/ldc/ldc/runtime/phobos/std/net/curl.d:(.text._D3std3net4curl4HTTP18_sharedStaticCtor1FZv+0x10): undefined reference to `curl_version_info'
>
> Is tihs because it doesn't like the version of libcurl installed on my system? Could you point me towards a repository where I can download and install this and how I should adjust the flags to cmake (I'm on RHEL 6 if that's important)?
>
> Thank you very much for helping me, would it be handy for me to update the wiki to reflect what I've learnt?
>
> Andrew
>
> On Tuesday, 26 May 2015 at 12:52:59 UTC, David Nadlinger wrote:
>> Hi Andrew,
>>
>> On Tuesday, 26 May 2015 at 12:50:15 UTC, Andrew Brown wrote:
>>> But when it comes to running cmake, I don't think it's finding llvm:
>>>
>>> cmake -L -DLLVM_ROOT_DIR="/home/abrown/software/ldc/llvm/" -DLLVM_CONFIG="/home/abrown/software/ldc/llvm/bin" -DLIBCONFIG_LIBRARY="/home/abrown/software/ldc/lib" -DLIBCONFIG_INCLUDE_DIR="/home/abrown/software/ldc/lib" ..
>>
>> LLVM_CONFIG expects the actual path of the binary itself, i.e. in this case …/bin/llvm-config. This is because some distributions rename (e.g. postfix) their LLVM tool names.
>>
>> You should only need to specify one of the two variables, though. If you just set LLVM_CONFIG to the full path, it should automatically find the rest.
>>
>> — David

Hi Andrew!

On Tuesday, 26 May 2015 at 16:17:36 UTC, Andrew Brown wrote:
> I managed to get things working, I just need to add a -L-lcurl flag when I compile. Thanks for helping, I was very stuck. If those cmake flags seem sensible, I'm happy to update the wiki (I found the description of LLVM_CONFIG a bit ambiguous as it was).

Glad to hear that it works now. Every improvement to the wiki is welcome! If you have an idea how to describe it better than please add it. Thanks in advance!

Regards,
Kai

I had a go at editing it, hope it's ok

Thanks again

Andrew
On Tuesday, 26 May 2015 at 16:41:11 UTC, Kai Nacke wrote:
> Hi Andrew!
>
> On Tuesday, 26 May 2015 at 16:17:36 UTC, Andrew Brown wrote:
>> I managed to get things working, I just need to add a -L-lcurl flag when I compile. Thanks for helping, I was very stuck. If those cmake flags seem sensible, I'm happy to update the wiki (I found the description of LLVM_CONFIG a bit ambiguous as it was).
>
> Glad to hear that it works now. Every improvement to the wiki is welcome! If you have an idea how to describe it better than please add it. Thanks in advance!
>
> Regards,
> Kai