[LLVMdev] LLVM Testing Experience

Thu Nov 27 02:36:22 PST 2014

Hi,

I think the source of your confusion is that the tarballs are not independent packages with their own build system. This is indirectly explained for subversion and git checkouts (http://llvm.org/docs/GettingStarted.html#getting-started-quickly-a-summary, http://llvm.org/docs/GettingStarted.html#git-mirror) but I couldn't find documentation that explains this for the release tarballs (http://llvm.org/docs/GettingStarted.html#unpacking-the-llvm-archives in particular doesn't mention this). I agree that this should be explained.

The script that we use to build the prebuilt binary packages (llvm/utils/release/test-release.sh) creates the following symlinks in the llvm.src and clang.src directories:
cfe.src/tools/extra -> ../../../../clang-tools-extra.src
llvm.src/projects/compiler-rt -> ../../compiler-rt.src
llvm.src/projects/libcxx -> ../../libcxx.src
llvm.src/projects/libcxxabi -> ../../libcxxabi.src
llvm.src/projects/test-suite -> ../../test-suite.src
llvm.src/tools/clang -> ../../cfe.src
If you add these symlinks and then run the configure script in llvm.src, then the resulting Makefile should build the packages corresponding to each symlink.

From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of Mehmet Erol Sanliturk
Sent: 26 November 2014 20:08
To: LLVM Developers Mailing List
Subject: [LLVMdev] LLVM Testing Experience

Dears All ,

I am not a C/C++ programmer and my knowledge about them is very weak .
In my life I did never write a "Makefile" and my knowledge about it is completely zero.

I want to learn Clang and LLVM as much as possible , mostly because I want to write a Pascal front end for LLVM by using Clang compiler parts as much as possible .

For this reason and on message by Tom Stellard

http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-November/078682.html
[LLVMdev] 3.5.1 Release Schedule

"Below is the proposed release schedule for LLVM 3.5.1.  As always,
we need testers, so if you are interested in helping with that, let
me know."

I wanted to download Release 3.5.0 and apply tests on it .

If I can do this I could also apply my experience to release candidates .
With respect to my experiences , a
developer uses an accustomed line of testing and may not cover all of the possibilities
which doing such a coverage is an impossible task . Another person not knowing the system very well may follow a different line and may discover some problems on this different line .
Therefore being ignorant about LLVM system is not so much detrimental for testing .

I had installed in Linux ( Fedora 20 x86_64 ) OS supplied Clang 3.4.10 and LLVM 3.4.10 .
Sometimes I am using Clang to compile small programs alongside with GCC 4.8.3 .
This is especially useful because sometimes one is detecting an error but another one is not .
Therefore during program development , using different compilers on the same program
is an excellent "code review" by a compiler as a "very high quality expert" .

I am sorry about being verbose but I wanted to be explicit as much as possible .

I have downloaded

http://llvm.org/releases/3.5.0/cfe-3.5.0.src.tar.xz
http://llvm.org/releases/3.5.0/llvm-3.5.0.src.tar.xz
http://llvm.org/releases/3.5.0/compiler-rt-3.5.0.src.tar.xz
http://llvm.org/releases/3.5.0/dragonegg-3.5.0.src.tar.xz
http://llvm.org/releases/3.5.0/libcxx-3.5.0.src.tar.xz
http://llvm.org/releases/3.5.0/libcxxabi-3.5.0.src.tar.xz
http://llvm.org/releases/3.5.0/lldb-3.5.0.src.tar.xz
http://llvm.org/releases/3.5.0/lld-3.5.0.src.tar.xz
http://llvm.org/releases/3.5.0/polly-3.5.0.src.tar.xz
http://llvm.org/releases/3.5.0/openmp-3.5.0.src.tar.xz
http://llvm.org/releases/3.5.0/clang-tools-extra-3.5.0.src.tar.xz
http://llvm.org/releases/3.5.0/test-suite-3.5.0.src.tar.xz

into a directory ...../www.llvm.org/3.5.0/<http://www.llvm.org/3.5.0/> ( where ..... is the upper directories list ) .

I have decompressed them by using the Ark of KDE into the above directory .

The created directories are as follows  :

 ...../www.llvm.org/3.5.0/cfe-3.5.0-src/<http://www.llvm.org/3.5.0/cfe-3.5.0-src/>
 ...../www.llvm.org/3.5.0/clang-tools-extra-3.5.0.src/<http://www.llvm.org/3.5.0/clang-tools-extra-3.5.0.src/>
 ...../www.llvm.org/3.5.0/compiler-rt-3.5.0.src/<http://www.llvm.org/3.5.0/compiler-rt-3.5.0.src/>
 ...../www.llvm.org/3.5.0/dragonegg-3.5.0.src/<http://www.llvm.org/3.5.0/dragonegg-3.5.0.src/>
 ...../www.llvm.org/3.5.0/libcxx-3.5.0.src/<http://www.llvm.org/3.5.0/libcxx-3.5.0.src/>
 ...../www.llvm.org/3.5.0/libcxxabi-3.5.0.src/<http://www.llvm.org/3.5.0/libcxxabi-3.5.0.src/>
 ...../www.llvm.org/3.5.0/lld-3.5.0.src/<http://www.llvm.org/3.5.0/lld-3.5.0.src/>
 ...../www.llvm.org/3.5.0/lldb-3.5.0.src/<http://www.llvm.org/3.5.0/lldb-3.5.0.src/>
 ...../www.llvm.org/3.5.0/llvm-3.5.0.src/<http://www.llvm.org/3.5.0/llvm-3.5.0.src/>
 ...../www.llvm.org/3.5.0/openmp-3.5.0.src/<http://www.llvm.org/3.5.0/openmp-3.5.0.src/>
 ...../www.llvm.org/3.5.0/polly-3.5.0.src/<http://www.llvm.org/3.5.0/polly-3.5.0.src/>
 ...../www.llvm.org/3.5.0/test-suite-3.5.0.src/<http://www.llvm.org/3.5.0/test-suite-3.5.0.src/>

--------------------------------------------------------------------------------

By thinking the root of the above components would be LLVM ,
I have opened a Console terminal into

 ...../www.llvm.org/3.5.0/llvm-3.5.0.src/<http://www.llvm.org/3.5.0/llvm-3.5.0.src/>

Since there were existing

   "configure"

script and a "Makefile" , I have applied it with following make execution .

The make completed without an error .
The make only processed the ...../www.llvm.org/3.5.0/llvm-3.5.0.src<http://www.llvm.org/3.5.0/llvm-3.5.0.src> directories .

--------------------------------------------------------------------------------

I have opened a Console terminal into

 ...../www.llvm.org/3.5.0/cfe-3.5.0.src/<http://www.llvm.org/3.5.0/cfe-3.5.0.src/>

There was not a

   "configure"