llvm dev - Nov 2018 - Couldn't successfully generate project files for LLVM (checked out from trunk)

I'm using CMake version 3.12.3 on Windows 10 Home.  I checked out LLVM,
Clang, Clang extra tools, Compiler-RT, LLD, LibOMP, LIBCXX, and LIBCXXABI with
SVN and am now trying to generate project files.  But LLD, among some other
things, wasn't found (even though put all of those in the documented
directories inside the LLVM source tree).  And a lot of the tests failed. 
I'm attaching the CMake error and output logs to this message.  Please help
me out.

I'm trying to build it from source and added the
"-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly".  I'm not
trying to ask for help on targeting WebAssembly, though, but only on building
LLVM from source.  For now it's specifically generating Visual Studio 2017
project files.

I added the -Thost=x64 flag to CMake as well, but it still seemed to target x86.
Why?

Anyway, please help.
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I'm replying here to give an update.  I installed CMake 3.13.0 and then
tried to generate project file again, but had the same result.  I'm
attaching the updated logs to this message.

I did check out the source files from the trunk and put them into the
directories specified in the instruction on building LLVM from source on
llvm.org.  Do I have to manually specify the paths to the files somehow (if so,
where and how? Do I need to edit CMakeFiles.txt?)?
________________________________
From: llvm-dev <llvm-dev-bounces at lists.llvm.org> on behalf of Osman
Zakir via llvm-dev <llvm-dev at lists.llvm.org>
Sent: Friday, November 23, 2018 11:47 PM
To: llvm-dev at lists.llvm.org
Subject: [llvm-dev] Couldn't successfully generate project files for LLVM
(checked out from trunk)

I'm using CMake version 3.12.3 on Windows 10 Home.  I checked out LLVM,
Clang, Clang extra tools, Compiler-RT, LLD, LibOMP, LIBCXX, and LIBCXXABI with
SVN and am now trying to generate project files.  But LLD, among some other
things, wasn't found (even though put all of those in the documented
directories inside the LLVM source tree).  And a lot of the tests failed. 
I'm attaching the CMake error and output logs to this message.  Please help
me out.

I'm trying to build it from source and added the
"-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly".  I'm not
trying to ask for help on targeting WebAssembly, though, but only on building
LLVM from source.  For now it's specifically generating Visual Studio 2017
project files.

I added the -Thost=x64 flag to CMake as well, but it still seemed to target x86.
Why?

Anyway, please help.
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Thanks for the reply.

The problem may really have been that I was trying to use C:/Program
Files/LLVM/install_x64 as the value for the CMAKE_INSTALL_PREFIX macro.  I do
have LLD and Clang in C:/llvm/tools/lld and C:/llvm/tools/clang respectively.  I
did try to use the "Visual Studio 15 2017 Win64" as the generator, but
I got a warning about complications that may arise if I were to do that.

I'll try it again, this time putting the installation directory in the same
root folder as the source file, and then get back to this mailing list with the
results.

I tried to use the command line tool for CMake, rather than the GUI.  I find
that easier in some cases.  Would be great if I knew the flags I need to use to
have it locate LLD and Clang and build them when using the command line tool.

________________________________
From: Jonathan Goodwin <jondgoodwin at gmail.com>
Sent: Sunday, November 25, 2018 5:32 AM
To: osmanzakir90 at hotmail.com
Subject: Re: [llvm-dev] Couldn't successfully generate project files for
LLVM (checked out from trunk)

I will tell you what I did when recently building LLVM v7 on Windows, in case
this might help. I don't have a lot of experience with this, but I did
eventually get it built (including with WebAssembly).

First off, I believe there may be a problem building from a folder with a space
as part of the name (e.g., "Program Files"). So, I put the source in
D:\libs\llvm. The same is true for fixing up INSTALL_PREFIX to another folder
(which does not have spaces in it). If you don't get that right, the latter
"install" step does not work properly.

 It turns out that LLD and Clang not only need to be placed in the tools folder,
but also using the correct name (lld and clang). When this is right, CMake
notices their presence and the CMake GUI offers up the options to build Clang
and LLD.

If you want to build the 64-bit LLVM, be sure you are using the right Visual
Studio generator. If you use the CMake GUI on a fresh install-to folder, it will
ask you which generator to use, and you need to specify the VIsual Studio 2017
generator for 64-bit (vs. the x86 one).

Hope these tips help you some...

On Sun, Nov 25, 2018 at 3:42 AM Osman Zakir via llvm-dev <llvm-dev at
lists.llvm.org<mailto:llvm-dev at lists.llvm.org>> wrote:
I'm replying here to give an update.  I installed CMake 3.13.0 and then
tried to generate project file again, but had the same result.  I'm
attaching the updated logs to this message.

I did check out the source files from the trunk and put them into the
directories specified in the instruction on building LLVM from source on
llvm.org<http://llvm.org>.  Do I have to manually specify the paths to the
files somehow (if so, where and how? Do I need to edit CMakeFiles.txt?)?
________________________________
From: llvm-dev <llvm-dev-bounces at lists.llvm.org<mailto:llvm-dev-bounces
at lists.llvm.org>> on behalf of Osman Zakir via llvm-dev <llvm-dev at
lists.llvm.org<mailto:llvm-dev at lists.llvm.org>>
Sent: Friday, November 23, 2018 11:47 PM
To: llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>
Subject: [llvm-dev] Couldn't successfully generate project files for LLVM
(checked out from trunk)

I'm using CMake version 3.12.3 on Windows 10 Home.  I checked out LLVM,
Clang, Clang extra tools, Compiler-RT, LLD, LibOMP, LIBCXX, and LIBCXXABI with
SVN and am now trying to generate project files.  But LLD, among some other
things, wasn't found (even though put all of those in the documented
directories inside the LLVM source tree).  And a lot of the tests failed. 
I'm attaching the CMake error and output logs to this message.  Please help
me out.

I'm trying to build it from source and added the
"-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly".  I'm not
trying to ask for help on targeting WebAssembly, though, but only on building
LLVM from source.  For now it's specifically generating Visual Studio 2017
project files.

I added the -Thost=x64 flag to CMake as well, but it still seemed to target x86.
Why?

Anyway, please help.
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