configure

#!/usr/bin/env bash

mkdir -p build

CURDIR=$(pwd)
JAVA=$(command -v java)

if [ -z "$JAVA" ]
then
    echo "You need to have java in your path."
    exit 1
fi

JAVA=$(cd $(dirname $JAVA); pwd)/java

JAVA_HOME=$(cd $(dirname $JAVA)/..; pwd)

if [ ! -d "$JAVA_HOME" ]
then
    echo "Error, expected $JAVA_HOME to be a directory."
    exit 1
fi

XMQ=$(command -v xmq)

if [ -z "$XMQ" ]
then
    XMQ=$(pwd)/3rdparty/xmq/build/default/release/xmq

    if [ ! -x $XMQ ]
    then
       echo "You need to have xmq. Building a local xmq for you."
       (mkdir -p 3rdparty; cd 3rdparty; git clone https://github.com/libxmq/xmq.git; cd xmq; ./configure; make; make test SILENT= )
    fi
    if ! $XMQ --version > /dev/null
    then
        echo "Failed to install xmq. Please fix."
        exit 1
    fi
fi

M2REPO="$HOME/.m2/repository"
JAVA="$JAVA"
JAVA_HOME="$JAVA_HOME"
JAVA_VERSION="$($JAVA -version 2>&1 | tr '\n' ' ')"
GIT_ROOT="$CURDIR"
BUILD="$CURDIR/build"
BUILD_MVN_BIN="$BUILD/mvn_bin"
BUILD_JAVAC_BIN="$BUILD/javac_bin"
BUILD_GRAAL_BIN="$BUILD/graal_bin"
GEN_SRC="$BUILD/generated-sources"
GEN_ANTLR4="$GEN_SRC/antlr4"
PROJECT_DEPS="$BUILD/project-deps"
TEST_MODELS="$BUILD/test-models"
XMQ="$XMQ"

echo "# Generated $(date)" > build/spec.mk
{
    echo "SPEC_MK:=$BUILD/spec.mk"
    echo "XMQ:=$XMQ"
    echo "M2REPO:=$M2REPO"
    echo "JAVA:=$JAVA"
    echo "JAVA_VERSION:='$JAVA_VERSION'"
    echo "JAVA_HOME:=$JAVA_HOME"
    echo "GIT_ROOT:=$CURDIR"
    echo "BUILD:=$BUILD"
    echo "BUILD_MVN_BIN:=$BUILD_MVN_BIN"
    echo "BUILD_JAVAC_BIN:=$BUILD_JAVAC_BIN"
    echo "BUILD_GRAAL_BIN:=$BUILD_GRAAL_BIN"
    echo "GEN_SRC:=$GEN_SRC"
    echo "GEN_ANTLR4:=$GEN_ANTLR4"
    echo "PROJECT_DEPS:=$PROJECT_DEPS"
    echo "TEST_MODELS:=$TEST_MODELS"
} >> build/spec.mk

cat >> build/spec.mk <<EOF

MOST_RECENT:=\$(shell ls -t \$(BUILD_MVN_BIN)/evbt \$(BUILD_JAVAC_BIN)/evbt \$(BUILD_GRAAL_BIN)/evbt 2>/dev/null | head --lines=1)
ifneq (,\$(findstring mvn_bin/evbt,\$(MOST_RECENT)))
MOST_RECENT:=mvn
endif
ifneq (,\$(findstring javac_bin/evbt,\$(MOST_RECENT)))
MOST_RECENT:=javac
endif
ifneq (,\$(findstring graal_bin/evbt,\$(MOST_RECENT)))
MOST_RECENT:=graal
endif

EVBT:=\$(BUILD)/\$(MOST_RECENT)_bin/evbt

EOF

echo "Generated build/spec.mk you can now run make"