Update build clang/llvm/lldb 3.9 (#14096)

Update build scripts, docs and build pipeline docker images to clang/llvm/lldb 3.9

2 files changed, 20 insertions, 76 deletions

diff --git a/Documentation/building/buildinglldb.md b/Documentation/building/buildinglldb.md
index 053c64f924..5c4b775c17 100644
--- a/Documentation/building/buildinglldb.md
+++ b/Documentation/building/buildinglldb.md
@@ -19,15 +19,15 @@ Building LLDB
 	git clone http://llvm.org/git/lldb.git 
    ```
 
-2. Checkout the "release_38" branches in llvm/clang/lldb:
+2. Checkout the "release_39" branches in llvm/clang/lldb:
 
    ```
    cd $HOME/llvm
-   git checkout release_38
+   git checkout release_39
    cd $HOME/llvm/tools/clang
-   git checkout release_38
+   git checkout release_39
    cd $HOME/llvm/tools/lldb
-   git checkout release_38 
+   git checkout release_39 
    ```
 
 3. Install the prerequisites:
diff --git a/Documentation/building/linux-instructions.md b/Documentation/building/linux-instructions.md
index 71ca8797e3..be70efbcf1 100644
--- a/Documentation/building/linux-instructions.md
+++ b/Documentation/building/linux-instructions.md
@@ -18,10 +18,10 @@ Toolchain Setup
 Install the following packages for the toolchain: 
 
 - cmake 
-- llvm-3.5 (llvm-3.9 for ARM cross build)
-- clang-3.5 (clang-3.9 for ARM cross build)
-- lldb-3.6
-- lldb-3.6-dev 
+- llvm-3.9
+- clang-3.9
+- lldb-3.9
+- liblldb-3.9-dev
 - libunwind8 
 - libunwind8-dev
 - gettext
@@ -33,33 +33,28 @@ Install the following packages for the toolchain:
 - libkrb5-dev
 - libnuma-dev (optional, enables numa support)
 
-In order to get lldb-3.6 on Ubuntu 14.04, we need to add an additional package source:
+In order to get clang-3.9, llvm-3.9 and lldb-3.9 on Ubuntu 14.04, we need to add an additional package source:
 
-```
-ellismg@linux:~$ echo "deb http://llvm.org/apt/trusty/ llvm-toolchain-trusty-3.6 main" | sudo tee /etc/apt/sources.list.d/llvm.list
-ellismg@linux:~$ wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | sudo apt-key add -
-ellismg@linux:~$ sudo apt-get update
-```
-
-If you are going to cross build for ARM, you need llvm-3.9 and clang-3.9 and please add below package source instead for Ubuntu 14.04.
-```
-hqueue@linux:~$ echo "deb http://apt.llvm.org/trusty/ llvm-toolchain-trusty-3.9 main" | sudo tee /etc/apt/sources.list.d/llvm.list
-hqueue@linux:~$ wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | sudo apt-key add -
-hqueue@linux:~$ sudo apt-get update
-```
+    ~$ echo "deb http://llvm.org/apt/trusty/ llvm-toolchain-trusty-3.9 main" | sudo tee /etc/apt/sources.list.d/llvm.list
+    ~$ wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | sudo apt-key add -
+    ~$ sudo apt-get update
+    
 For other version of Debian/Ubuntu, please visit http://apt.llvm.org/.
 
 Then install the packages you need:
 
-```
-ellismg@linux:~$ sudo apt-get install cmake llvm-3.5 clang-3.5 lldb-3.6 lldb-3.6-dev libunwind8 libunwind8-dev gettext libicu-dev liblttng-ust-dev libcurl4-openssl-dev libssl-dev uuid-dev libnuma-dev libkrb5-dev
-```
+    ~$ sudo apt-get install cmake llvm-3.9 clang-3.9 lldb-3.9 liblldb-3.9-dev libunwind8 libunwind8-dev gettext libicu-dev liblttng-ust-dev libcurl4-openssl-dev libssl-dev uuid-dev libnuma-dev libkrb5-dev
+
+The lldb 3.9 package needs a lib file symbolic link fixed:
+
+    cd /usr/lib/llvm-3.9/lib
+    sudo ln -s ../../x86_64-linux-gnu/liblldb-3.9.so.1 liblldb-3.9.so.1
 
 You now have all the required components.
 
 If you are using Fedora, then you will need to install the following packages:
 
-`$ sudo dnf install llvm cmake clang lldb-devel libunwind-devel lttng-ust-devel libuuid-devel libicu-devel numactl-devel`
+    ~$ sudo dnf install llvm cmake clang lldb-devel libunwind-devel lttng-ust-devel libuuid-devel libicu-devel numactl-devel
 
 Git Setup
 ---------
@@ -127,57 +122,6 @@ index 1ed3dbf..c643032 100644
      }
 ```
 
-How to enable -O3 optimization level for ARM/Linux
-==================================================
-
-If you are using clang-3.9, -O3 optimization is enabled as default and you can skip this section.
-If you are using older version of clang, please follow instructions in this section to enable -O3 optimization.
-Currently, we can build coreclr with -O1 flag of clang in release build mode for Linux/ARM without any bugfix of llvm-3.6. This instruction is to enable -O3 optimization level of clang on Linux/ARM by fixing the bug of llvm.
-
-First, download latest version from the clang-3.6/llvm-3.6 upstream: 
-```
-lgs@ubuntu cd /work/dotnet/
-lgs@ubuntu wget http://llvm.org/releases/3.6.2/llvm-3.6.2.src.tar.xz
-lgs@ubuntu tar xJf llvm-3.6.2.src.tar.xz
-lgs@ubuntu cd ./llvm-3.6.2.src/tools/
-lgs@ubuntu wget http://llvm.org/releases/3.6.2/cfe-3.6.2.src.tar.xz
-lgs@ubuntu tar xJf cfe-3.6.2.src.tar.xz
-lgs@ubuntu mv cfe-3.6.2.src clang
-```
-
-Second, expand the coverage of the upstream patch by:
-https://bugs.launchpad.net/ubuntu/+source/llvm-defaults/+bug/1584089
-
-Third, build clang-3.6/llvm-3.6 source as following: 
-```
-lgs@ubuntu cmake -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="all" -DCMAKE_INSTALL_PREFIX=~/llvm-3.6.2 \
--DLLVM_BUILD_LLVM_DYLIB=1 -DLLDB_DISABLE_LIBEDIT=1 -DLLDB_DISABLE_CURSES=1 -DLLDB_DISABLE_PYTHON=1 \
--DLLVM_ENABLE_DOXYGEN=0 -DLLVM_ENABLE_TERMINFO=0 -DLLVM_INCLUDE_EXAMPLES=0 -DLLVM_BUILD_RUNTIME=0 \
--DLLVM_INCLUDE_TESTS=0 -DPYTHON_INCLUDE_DIR=/usr/include/python2.7 /work/dotnet/llvm-3.6.2.src
-lgs@ubuntu  
-lgs@ubuntu sudo ln -sf /usr/bin/ld /usr/bin/ld.gold
-lgs@ubuntu time make -j8
-lgs@ubuntu time make -j8 install 
-lgs@ubuntu
-lgs@ubuntu sudo apt-get remove clang-3.6 llvm-3.6
-lgs@ubuntu  vi ~/.bashrc (or /etc/profile)
-# Setting new clang/llvm version
-export PATH=$HOME/llvm-3.6.2/bin/:$PATH
-export LD_LIBRARY_PATH=$HOME/llvm-3.6.2/lib:$LD_LIBRARY_PATH
-```
-
-For Ubuntu 14.04 X64 users, they can easily install the fixed clang/llvm3.6 package with "apt-get" command from the "ppa:leemgs/dotnet" Ubuntu repository, without the need to execute the above 1st, 2nd, and 3rd step.
-```
-lgs@ubuntu sudo add-apt-repository ppa:leemgs/dotnet
-lgs@ubuntu sudo apt-get update
-lgs@ubuntu sudo apt-get install clang-3.6 llvm-3.6 lldb-3.6
-```
-
-Finally, let's build coreclr with updated clang/llvm. If you meet a lldb related error message at build-time, try to build coreclr with "skipgenerateversion" option. 
-```
-lgs@ubuntu time ROOTFS_DIR=/work/dotnet/rootfs-coreclr/arm ./build.sh arm release clean cross 
-```
-
 Additional optimization levels for ARM/Linux: -Oz and -Ofast
 ============================================================