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<p><font size="-1">Joan,</font></p>
<p><font size="-1">Just completed a good clang compile built from a
mostly vanilla Xubuntu 19.04 VM, installed the llvm-needed
Ubuntu packages, downloaded a new copy of llvm using the noted
llvm install page, configured using</font></p>
<p><font size="-1">cmake -G Ninja -DLLVM_ENABLE_PROJECTS="clang"
-DLLVM_USE_LINKER=lld -DCMAKE_BUILD_TYPE="Release"
-DCMAKE_INSTALL_PREFIX=/home/nnelson/Documents/llvm/install
../llvm &> cmake.log</font></p>
<p><font size="-1">which is primarily different from yours where I
am using a 'Release' build to avoid the much larger memory and
disk usage of a 'Debug' build. The 'ninja install' command put
everything in </font><font size="-1"><font size="-1">llvm/install
as expected including clang. I look through </font></font><font
size="-1"><font size="-1"><font size="-1">cmake.log to see if
there are errors that need to be corrected.<br>
</font></font></font></p>
<p><font size="-1">My differences appear to be Xubuntu, the
packages, ninja, and the cmake line.</font></p>
<p><font size="-1">On Linux I can use</font></p>
<p><font size="-1">ninja &> ninja_compile.log</font></p>
<p><font size="-1">to look at the compile history and see if
something went wrong.</font></p>
<p><font size="-1">Neil<br>
</font></p>
<div class="moz-cite-prefix"><font size="-1">On 7/6/19 12:00 AM,
Joan Lluch wrote:<br>
</font></div>
<blockquote type="cite"
cite="mid:F9CC78AA-1E58-456D-AF3E-E8611D8E8426@icloud.com">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<div class=""><font size="-1">Hi Nelson,</font></div>
<div class=""><font size="-1"><br class="">
</font></div>
<div class=""><font size="-1">Thanks for your reply. </font></div>
<div class=""><font size="-1"><br class="">
</font></div>
<div class=""><font size="-1">The “build/Debug/lib” and
"build/Release/lib” directories is where all the libraries go.
Similarly, the executables go to “build/Debug/bin” and
“build/Release/bin” before they are moved to the install
directory. This is expected and normal. However, the problem
is that a small number of libraries (exactly 20 in total) are
not created at all for the LLVM 9.0 version that I cloned from
gitHub. These libraries are in fact not created anywhere!.</font></div>
<div class=""><font size="-1"><br class="">
</font></div>
<div class=""><font size="-1">I still have LLVM 7.0 installed in
my computer and the libraries for that version are all there
in the right places under the LLMV 7.0 directory, but in that
case I installed it all in a different way as I said, loosing
the benefits of git.</font></div>
<div class=""><font size="-1"><br class="">
</font></div>
<div class=""><font size="-1">I forgot to mention that “llc” alone
compiles and links correctly without any issue. The problem is
only when I try to get ‘clang’ compiled.</font></div>
<div class=""><font size="-1"><br class="">
</font></div>
<div class=""><font size="-1">You mention that you enabled a lot
of projects:
"clang;clang-tools-extra;compiler-rt;debuginfo-tests;libclc;libcxx;libcxxabi;libunwind;lld;lldb;llvm;openmp;parallel-libs;polly;pstl”.
I only really need the basic installation of “clang”, and I do
not need any testing tools because all I want is to add my
custom target to it. I also tried "clang;libclc;libcxx” but
the problem with the missing libraries is exactly the same.</font></div>
<div class=""><font size="-1"><br class="">
</font></div>
<div class=""><font size="-1">Just as a matter of information: I
successfully implemented a custom target backend, and have it
almost finished and running perfectly on LLVM 7.0. Now, I just
want to move it to LLVM 9.0, but got stuck in what is supposed
to be the easiest part which is just compiling it (??), but I
do not understand why it doesn’t compile!</font></div>
<div class=""><font size="-1"><br class="">
</font></div>
<div class=""><font size="-1">Any ideas?</font></div>
<div class=""><font size="-1"><br class="">
</font></div>
<div class=""><font size="-1">Joan</font></div>
<div class=""><br class="">
</div>
<blockquote type="cite" class="">
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><font
class="" size="-1">John, I compiled and installed to
/usr/local all the projects under llvm except llgo
yesterday. The three files you noted are in</font></div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><font
class="" size="-1">../llvm-project/build/lib<br class="">
</font></div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><font
class="" size="-1">I do not have a llvm-project/build/Debug
directory.</font></div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><font
class="" size="-1">Xubuntu 19.04. llvm downloaded from
github on 6/18 using instructions from the page you note.</font></div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><font
class="" size="-1">cmake -G Ninja
-DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra;compiler-rt;debuginfo-tests;libclc;libcxx;libcxxabi;libunwind;lld;lldb;llvm;openmp;parallel-libs;polly;pstl"
-DLLVM_USE_LINKER=lld -DCMAKE_BUILD_TYPE="Release" ../llvm</font></div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><font
class="" size="-1">Installed additional packages as needed.<br
class="">
</font></div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><font
class="" size="-1">Neil<br class="">
</font></div>
<div class="moz-cite-prefix"><font class="" size="-1">On 7/5/19
6:46 AM, Joan Lluch via llvm-dev wrote:<br class="">
</font></div>
<blockquote type="cite"
cite="mid:87EE0948-7275-4451-AE4D-71F599E6CC3A@icloud.com"
class="">
<div dir="auto" class="" style="word-wrap: break-word;
-webkit-nbsp-mode: space; -webkit-line-break:
after-white-space;"><font class="" size="-1">Hi All,</font>
<div class=""><font class="" size="-1"><br class="">
</font></div>
<div class=""><font class="" size="-1">I am looking for the
best way to install LLVM+clang, but I do not seem to
find a way that works for me.</font></div>
<div class=""><font class="" size="-1"><br class="">
</font></div>
<div class=""><font class="" size="-1">I followed the steps
in this document <a
href="https://llvm.org/docs/GettingStarted.html"
class="" moz-do-not-send="true">Getting Started with
the LLVM System — LLVM 9 documentation</a> except that
I created the following folder structure as I do not
want clang and llc to go to /usr/local</font></div>
<div class=""><font class="" size="-1"><br class="">
</font></div>
<div class=""><font class="" size="-1">LLVM-9</font></div>
<div class=""><font class="" size="-1"> llvm-project
(cloned from github)</font></div>
<div class=""><font class="" size="-1"> install</font></div>
<div class=""><font class="" size="-1"><br class="">
</font></div>
<div class=""><font class="" size="-1">I ran the following
command line from the build directory in llvm-project as
described in the doc, but added the
DLLVM_OPTIMIZED_TABLEGEN=On variable :</font></div>
<div class=""><font class="" size="-1"><br class="">
</font></div>
<div class="">
<div class="" style="margin: 0px; font-size: 10px;
line-height: normal; font-family: Monaco;
background-color: rgb(255, 255, 255);"><font class=""
size="-1"><span class=""
style="font-variant-ligatures: no-common-ligatures;">cmake
-G Xcode -DLLVM_ENABLE_PROJECTS=clang
-DCMAKE_INSTALL_PREFIX=/Users/joan/LLVM-9/install
-DLLVM_OPTIMIZED_TABLEGEN=On ../llvm</span></font></div>
</div>
<div class="" style="margin: 0px; font-size: 10px;
line-height: normal; font-family: Monaco;
background-color: rgb(255, 255, 255);"><font class=""
size="-1"><br class="">
</font></div>
<div class="" style="margin: 0px; line-height: normal;
background-color: rgb(255, 255, 255);"><font class=""
size="-1">The cmake command above seems to work ok, but
after that, when I compile the “install” or “build_all”
schemes I get a lot of linker errors. Such as these ones
and more:</font></div>
<div class="" style="margin: 0px; line-height: normal;
background-color: rgb(255, 255, 255);"><font class=""
size="-1"><br class="">
</font></div>
<div class="" style="margin: 0px; line-height: normal;
background-color: rgb(255, 255, 255);">
<div class="" style="margin: 0px 0px 0px 12px;
text-indent: -12px; font-size: 11px; line-height:
normal; font-family: Menlo;"><font class="" size="-1">clang:
error: no such file or directory:
'/Users/joan/LLVM-9/llvm-project/build/Debug/lib/libclangAST.a'</font></div>
<div class="" style="margin: 0px 0px 0px 12px;
text-indent: -12px; font-size: 11px; line-height:
normal; font-family: Menlo;"><font class="" size="-1">clang:
error: no such file or directory:
'/Users/joan/LLVM-9/llvm-project/build/Debug/lib/libclangLex.a'</font></div>
<div class="" style="margin: 0px 0px 0px 12px;
text-indent: -12px; font-size: 11px; line-height:
normal; font-family: Menlo;"><font class="" size="-1">clang:
error: no such file or directory:
'/Users/joan/LLVM-9/llvm-project/build/Debug/lib/libclangBasic.a'</font></div>
</div>
<div class=""><font class="" size="-1"><br class="">
</font></div>
<div class=""><font class="" size="-1">Up until recently, I
have worked with LLVM 7.0 and all what I did was
downloading both llvm and clang from <a
href="http://llvm.org" class="" moz-do-not-send="true">llvm.org</a>,
copied clang into llvm/tools, and ran the cmake
application (not command line). That kind of worked
except for some minor glitches but of course I didn’t
get the benefits of git.</font></div>
<div class=""><font class="" size="-1"><br class="">
</font></div>
<div class=""><font class="" size="-1">So what am I doing
wrong now? Why I’m getting such linker errors?</font></div>
<div class=""><font class="" size="-1"><br class="">
</font></div>
<div class=""><font class="" size="-1">It seems that a few
required libraries are not created, but I do not
understand why. Any ideas?</font></div>
<div class=""><font class="" size="-1"><br class="">
</font></div>
<div class=""><font class="" size="-1">Thanks,</font></div>
<div class=""><font class="" size="-1"><br class="">
</font></div>
<div class=""><font class="" size="-1">John</font></div>
</div>
</blockquote>
</blockquote>
<div class="">
<div dir="auto" class="" style="word-wrap: break-word;
-webkit-nbsp-mode: space; -webkit-line-break:
after-white-space;">
<div class=""><font class="" size="-1"><br class="">
</font></div>
</div>
</div>
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