Create Halide_Experimental building script

This PR temporarily introduces a Halide hack to make progress.
After a quick exchange with @abadams this seems unnecessary as
the use case for sequential dependencies probably only requires
an RDom instead of a Var for the `t` for-loop index.
Punting for now.

Author: nicolasvasilache

.circleci/config.yml

@@ -13,7 +13,7 @@ jobs:
           command: |
             . /opt/conda/anaconda/bin/activate
             source activate tc_build
-            conda install -y -c nicolasvasilache llvm-trunk halide
+            conda install -y -c nicolasvasilache llvm-trunk halide_experimental
 
       - run:
           name: check_formatting

.jenkins/build.sh

@@ -60,7 +60,7 @@ cd /var/lib/jenkins/workspace
 git submodule update --init --recursive
 
 source activate tc_build
-conda install -y -c nicolasvasilache llvm-trunk halide
+conda install -y -c nicolasvasilache llvm-trunk halide_experimental
 conda install -y -c conda-forge eigen
 conda install -y -c nicolasvasilache caffe2
 

conda_recipes/conda_build_tc.sh

@@ -64,6 +64,22 @@ time conda build -c $ANACONDA_USER --python 3.6 halide
 
 echo "HALIDE packaged Successfully"
 
+##############################################################################
+# Halide_Experimental settings
+HALIDE_EXPERIMENTAL_BUILD_VERSION="1.0.0"
+HALIDE_EXPERIMENTAL_BUILD_NUMBER=1
+HALIDE_EXPERIMENTAL_GIT_HASH="0c6f23c9c7b17a82718ffee69b6360483302d63a"
+
+echo "Packaging HALIDE_EXPERIMENTAL ==> HALIDE_EXPERIMENTAL_BUILD_VERSION: ${HALIDE_EXPERIMENTAL_BUILD_VERSION} HALIDE_EXPERIMENTAL_BUILD_NUMBER: ${HALIDE_EXPERIMENTAL_BUILD_NUMBER}"
+
+export HALIDE_EXPERIMENTAL_BUILD_VERSION=$HALIDE_EXPERIMENTAL_BUILD_VERSION
+export HALIDE_EXPERIMENTAL_BUILD_NUMBER=$HALIDE_EXPERIMENTAL_BUILD_NUMBER
+export HALIDE_EXPERIMENTAL_GIT_HASH=$HALIDE_EXPERIMENTAL_GIT_HASH
+
+time conda build -c $ANACONDA_USER --python 3.6 halide_experimental
+
+echo "HALIDE_EXPERIMENTAL packaged Successfully"
+
 ################################################################################
 ## Tensor Comprehensions settings
 #TC_BUILD_VERSION="0.2.0"

conda_recipes/halide/build.sh

@@ -52,9 +52,17 @@ LLVM_CONFIG=${LLVM_CONFIG} \
 VERBOSE=${VERBOSE} \
 PREFIX=${INSTALL_PREFIX} \
 WITH_LLVM_INSIDE_SHARED_LIBHALIDE= \
+WITH_X86=1 \
+WITH_ARM= \
+WITH_HEXAGON= \
+WITH_MIPS= \
+WITH_AARCH64= \
+WITH_POWERPC= \
+WITH_PTX=1 \
+WITH_AMDGPU= \
 WITH_OPENCL= \
-WITH_OPENGL= \
 WITH_METAL= \
+WITH_OPENGL= \
 WITH_EXCEPTIONS=1 \
 make -f ../Makefile -j"$(nproc)" install || exit 1
 mkdir -p ${INSTALL_PREFIX}/include/Halide

conda_recipes/halide_experimental/build.sh

@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+
+set -e
+
+# code gets checked out at below:
+# $SOURCE_DIR ===> <anaconda_root>/conda-bld/halide_experimental_<timestamp>/work
+#
+# build directory gets created at $SOURCE_DIR/build
+#
+# CONDA environment for debugging:
+# cd <anaconda_root>/conda-bld/halide_experimental_<timestamp>
+# source activate ./_h_env_......    # long placeholders
+#
+# $CONDA_PREFIX and $PREFIX are set to the same value i.e. the environment value
+#
+# Installation happens in the $PREFIX which is the environment and rpath is set
+# to that
+#
+# For tests, a new environment _test_env_.... is created
+# During the tests, you will see that the halide_experimental package gets checked out
+
+CMAKE_VERSION=${CMAKE_VERSION:="`which cmake3 || which cmake`"}
+VERBOSE=${VERBOSE:=0}
+
+CC=${CC:="`which gcc`"}
+CXX=${CXX:="`which g++`"}
+
+export INSTALL_PREFIX=$PREFIX
+echo "CONDA_PREFIX: ${CONDA_PREFIX}"
+echo "PREFIX: ${PREFIX}"
+
+export CLANG_PREFIX=$($PREFIX/bin/llvm-config --prefix)
+echo "CLANG_PREFIX: ${CLANG_PREFIX}"
+
+echo "Building Halide_Experimental conda package"
+
+echo "Clean up existing build packages if any"
+rm -rf build || true
+
+mkdir -p build
+cd build
+
+echo "Configuring Halide_Experimental"
+
+LLVM_CONFIG_FROM_PREFIX=${CLANG_PREFIX}/bin/llvm-config
+LLVM_CONFIG=$( which $LLVM_CONFIG_FROM_PREFIX || which llvm-config-4.0 || which llvm-config )
+CLANG_FROM_PREFIX=${CLANG_PREFIX}/bin/clang
+CLANG=$( which $CLANG_FROM_PREFIX || which clang-4.0 || which clang )
+
+CLANG=${CLANG} \
+LLVM_CONFIG=${LLVM_CONFIG} \
+VERBOSE=${VERBOSE} \
+PREFIX=${INSTALL_PREFIX} \
+WITH_LLVM_INSIDE_SHARED_LIBHALIDE= \
+WITH_X86=1 \
+WITH_ARM= \
+WITH_HEXAGON= \
+WITH_MIPS= \
+WITH_AARCH64= \
+WITH_POWERPC= \
+WITH_PTX=1 \
+WITH_AMDGPU= \
+WITH_OPENCL= \
+WITH_METAL= \
+WITH_OPENGL= \
+WITH_EXCEPTIONS=1 \
+make -f ../Makefile -j"$(nproc)" install || exit 1
+mkdir -p ${INSTALL_PREFIX}/include/Halide
+mv ${INSTALL_PREFIX}/include/Halide*.h  ${INSTALL_PREFIX}/include/Halide/ || exit 1
+
+echo "Successfully built Halide_Experimental conda package"

conda_recipes/halide_experimental/meta.yaml

@@ -0,0 +1,34 @@
+package:
+  name: halide_experimental
+  version: "{{ environ.get('HALIDE_EXPERIMENTAL_BUILD_VERSION') }}"
+
+source:
+  git_url: https://github.com/nicolasvasilache/Halide.git
+  git_rev: "{{ environ.get('HALIDE_EXPERIMENTAL_GIT_HASH') }}"
+
+requirements:
+  build:
+    - llvm-trunk==1.0.0
+    - cmake
+  run:
+    - llvm-trunk==1.0.0
+    - cmake
+
+build:
+  number: {{ environ.get('HALIDE_EXPERIMENTAL_BUILD_NUMBER') }}
+  skip: True   # [win]
+
+test:
+  commands:
+    - test -f $PREFIX/lib/libHalide.so
+    - test -f $PREFIX/lib/libHalide.a
+    - test -d $PREFIX/include/Halide
+
+about:
+  home: http://halide-lang.org
+  license: MIT
+  summary: A language for image processing and computational photography
+
+extra:
+  recipe-maintainers:
+    - nicolasvasilache