dist/redhat: Use mock for CentOS/RHEL rpms

Enable mock for CentOS/RHEL, also support cross building by mock.

See scylladb/scylla#630

Signed-off-by: Takuya ASADA <syuu@scylladb.com>
Message-Id: <20170522081759.8574-1-syuu@scylladb.com>

dist/redhat/build_rpm.sh

@@ -1,34 +1,71 @@
 #!/bin/bash -e
 
-RPMBUILD=`pwd`/build/rpmbuild
+. /etc/os-release
+print_usage() {
+    echo "build_rpm.sh -target epel-7-x86_64 --configure-user"
+    echo "  --target target distribution in mock cfg name"
+    exit 1
+}
+TARGET=
+while [ $# -gt 0 ]; do
+    case "$1" in
+        "--target")
+            TARGET=$2
+            shift 2
+            ;;
+        *)
+            print_usage
+            ;;
+    esac
+done
+
+is_redhat_variant() {
+    [ -f /etc/redhat-release ]
+}
+pkg_install() {
+    if is_redhat_variant; then
+        sudo yum install -y $1
+    else
+        echo "Requires to install following command: $1"
+        exit 1
+    fi
+}
+
 
 if [ ! -e dist/redhat/build_rpm.sh ]; then
     echo "run build_rpm.sh in top of scylla-jmx dir"
     exit 1
 fi
 
-sudo yum install -y rpm-build git
+if [ "$(arch)" != "x86_64" ]; then
+    echo "Unsupported architecture: $(arch)"
+    exit 1
+fi
+if [ -z "$TARGET" ]; then
+    if [ "$ID" = "centos" -o "$ID" = "rhel" ] && [ "$VERSION_ID" = "7" ]; then
+        TARGET=epel-7-x86_64
+    elif [ "$ID" = "fedora" ]; then
+        TARGET=$ID-$VERSION_ID-x86_64
+    else
+        echo "Please specify target"
+        exit 1
+    fi
+fi
 
-OS=`awk '{print $1}' /etc/redhat-release`
-if [ "$OS" = "Fedora" ] && [ ! -f /usr/bin/mock ]; then
-    sudo yum -y install mock
-elif [ "$OS" = "CentOS" ] && [ ! -f /usr/bin/yum-builddep ]; then
-    sudo yum -y install yum-utils
+if [ ! -f /usr/bin/mock ]; then
+    pkg_install mock
+fi
+if [ ! -f /usr/bin/git ]; then
+    pkg_install git
 fi
 
 VERSION=$(./SCYLLA-VERSION-GEN)
 SCYLLA_VERSION=$(cat build/SCYLLA-VERSION-FILE)
 SCYLLA_RELEASE=$(cat build/SCYLLA-RELEASE-FILE)
-mkdir -p $RPMBUILD/{BUILD,BUILDROOT,RPMS,SOURCES,SPECS,SRPMS}
-git archive --format=tar --prefix=scylla-jmx-$SCYLLA_VERSION/ HEAD -o build/rpmbuild/SOURCES/scylla-jmx-$VERSION.tar
-cp dist/redhat/scylla-jmx.spec.in $RPMBUILD/SPECS/scylla-jmx.spec
-sed -i -e "s/@@VERSION@@/$SCYLLA_VERSION/g" $RPMBUILD/SPECS/scylla-jmx.spec
-sed -i -e "s/@@RELEASE@@/$SCYLLA_RELEASE/g" $RPMBUILD/SPECS/scylla-jmx.spec
+git archive --format=tar --prefix=scylla-jmx-$SCYLLA_VERSION/ HEAD -o build/scylla-jmx-$VERSION.tar
+cp dist/redhat/scylla-jmx.spec.in build/scylla-jmx.spec
+sed -i -e "s/@@VERSION@@/$SCYLLA_VERSION/g" build/scylla-jmx.spec
+sed -i -e "s/@@RELEASE@@/$SCYLLA_RELEASE/g" build/scylla-jmx.spec
 
-if [ "$OS" = "Fedora" ]; then
-    rpmbuild -bs --define "_topdir $RPMBUILD" $RPMBUILD/SPECS/scylla-jmx.spec
-    /usr/bin/mock rebuild --resultdir=`pwd`/build/rpms $RPMBUILD/SRPMS/scylla-jmx-$VERSION*.src.rpm
-else
-    sudo yum-builddep -y  $RPMBUILD/SPECS/scylla-jmx.spec
-    rpmbuild -ba --define "_topdir $RPMBUILD" $RPMBUILD/SPECS/scylla-jmx.spec
-fi
+sudo mock --buildsrpm --root=$TARGET --resultdir=`pwd`/build/srpms --spec=build/scylla-jmx.spec --sources=build/scylla-jmx-$VERSION.tar
+sudo mock --rebuild --root=$TARGET --resultdir=`pwd`/build/rpms build/srpms/scylla-jmx-$VERSION*.src.rpm