From 2d8cf9d5bc94cdb75d80643710a090198fd44a7d Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Tue, 16 Jul 2019 13:37:27 -0700
Subject: [PATCH] build: explicitly specify the python path

This ensures that we use python 2.7 when building LLVM.  The LLVM
tooling has not yet been ported to python 3, and this breaks the CI
builds which are now finding python 3 via `PATH`.
---
 utils/build-script-impl | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/utils/build-script-impl b/utils/build-script-impl
index cbe4a60a06c9e..cf10c6d45edb9 100755
--- a/utils/build-script-impl
+++ b/utils/build-script-impl
@@ -669,6 +669,10 @@ function set_build_options_for_host() {
                 -DCOMPILER_RT_ENABLE_TVOS:BOOL=FALSE
                 -DSANITIZER_MIN_OSX_VERSION="${cmake_osx_deployment_target}"
                 -DLLVM_ENABLE_MODULES:BOOL="$(true_false ${LLVM_ENABLE_MODULES})"
+                # NOTE(compnerd) this explicitly sets up the python executable
+                # since we sometimes end up with python 3 and the tooling
+                # currently relies on python 2.7
+                -DPYTHON_EXECUTABLE:PATH=/usr/bin/python2.7
             )
             if [[ $(is_llvm_lto_enabled) == "TRUE" ]]; then
                 if [[ $(cmake_needs_to_specify_standard_computed_defaults) == "TRUE" ]]; then
@@ -2558,6 +2562,21 @@ for host in "${ALL_HOSTS[@]}"; do
                     cmake_options+=(
                       -DLLDB_CODESIGN_IDENTITY=""
                       -DLLDB_USE_SYSTEM_DEBUGSERVER:BOOL="${LLDB_USE_SYSTEM_DEBUGSERVER}"
+
+                      # NOTE(compnerd) this explicitly sets up the python
+                      # executable since we sometimes end up with python 3 and
+                      # the tooling currently relies on python 2.7
+                      -DPython_ADDITIONAL_VERSIONS="2.7"
+                      -DPYTHON_EXECUTABLE:PATH=/usr/bin/python2.7
+                      -DPYTHON_LIBRARY="$(xcrun --sdk ${xcrun_sdk_name} --show-sdk-path)/System/Library/Frameworks/Python.framework/Versions/2.7/lib/libpython2.7.tbd"
+                      -DPYTHON_INCLUDE_DIR="$(xcrun --sdk ${xcrun_sdk_name} --show-sdk-path)/System/Library/Frameworks/Python.framework/Headers"
+                    )
+                  else
+                    cmake_options+=(
+                      # NOTE(compnerd) this explicitly sets up the python
+                      # executable since we sometimes end up with python 3 and
+                      # the tooling currently relies on python 2.7
+                      -DPYTHON_EXECUTABLE:PATH=/usr/bin/python2.7
                     )
                   fi
                 fi