[Integration image] Fix Abseil conflict between gRPC and or-tools (#32)

I think this'll solve the problem. Gonna kick off the image build
blindly.

integration_test/Dockerfile

@@ -44,14 +44,18 @@ COPY *.sh /tmp/
 # Install modern release of CMake
 RUN /tmp/cmake.sh
 
-# Compile, install, then cleanup gRPC
-RUN /tmp/grpc.sh
-RUN rm -r /tmp/grpc
-
 # Compile, install, then cleanup Verilator
 RUN /tmp/verilator.sh
 RUN rm -r /tmp/verilator-*
 
+# Install common dep for OR-Tools and gRPC.
+RUN /tmp/abseil.sh
+RUN rm -r /tmp/abseil-cpp
+
+# Compile, install, then cleanup gRPC
+RUN /tmp/grpc.sh
+RUN rm -r /tmp/grpc
+
 # Compile, install, then cleanup OR-Tools
 RUN /tmp/or-tools.sh
 RUN rm -r /tmp/or-tools-*

integration_test/abseil.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+set -e
+
+ABSL_VER=20220623.1
+
+cd /tmp
+git clone --recurse-submodules -b $ABSL_VER https://github.com/abseil/abseil-cpp.git
+cd abseil-cpp
+
+mkdir -p build
+cd build
+cmake -S .. -B . \
+  -G Ninja \
+  -DCMAKE_CXX_STANDARD=14 \
+  -DBUILD_SHARED_LIBS=ON \
+  -DCMAKE_BUILD_TYPE=Release
+ninja -j$(nproc)
+cmake --install .

integration_test/grpc.sh

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -e
+
 # Installs gRPC from source.
 
 cd /tmp
@@ -17,8 +19,9 @@ cd cmake/build
 cmake -S ../.. -B . \
   -G Ninja \
   -DgRPC_INSTALL=ON \
+  -DgRPC_ABSL_PROVIDER=package \
   -DCMAKE_BUILD_TYPE=Release
 ninja -j$(nproc)
-ninja install
+cmake --install .
 
 echo "Done."

integration_test/or-tools.sh

@@ -1,6 +1,8 @@
 #!/bin/bash
 # Downloads, compiles, and installs OR-Tools into /usr
 
+set -e
+
 OR_TOOLS_VER=9.5
 
 # Disable fetching and building SCIP below because of its license:
@@ -13,6 +15,21 @@ wget https://github.com/google/or-tools/archive/v$OR_TOOLS_VER.tar.gz
 tar -zxf v$OR_TOOLS_VER.tar.gz
 rm v$OR_TOOLS_VER.tar.gz
 cd or-tools-$OR_TOOLS_VER
-cmake -S . -B build -DBUILD_DEPS=ON -DBUILD_SAMPLES=OFF -DBUILD_EXAMPLES=OFF -DBUILD_FLATZINC=OFF -DUSE_SCIP=OFF
+cmake -S . -B build \
+  -DBUILD_DEPS=OFF \
+  -DBUILD_SAMPLES=OFF \
+  -DBUILD_EXAMPLES=OFF \
+  -DBUILD_FLATZINC=OFF \
+  -DUSE_SCIP=OFF \
+  -DBUILD_re2=ON \
+  -DBUILD_Eigen3=ON \
+  -DBUILD_CoinUtils=ON \
+  -DBUILD_Osi=ON \
+  -DBUILD_Clp=ON \
+  -DBUILD_Cgl=ON \
+  -DBUILD_Cbc=ON \
+  -DBUILD_GLPK=ON \
+  -DBUILD_HIGHS=ON
+
 cmake --build build --parallel $(nproc)
 cmake --install build --prefix /usr