Add GCC 11 tooling to CentOS 7 package builders. (#303)

package-builders/Dockerfile.centos7.v1

@@ -10,6 +10,9 @@ ENV VERSION=$VERSION
 # Dummy Sentry DSN
 ENV SENTRY_DSN="https://[email protected]/dummy"
 
+COPY package-builders/centos-7-scl.repo /etc/yum.repos.d/centos-7-scl.repo
+COPY package-builders/RPM-GPG-KEY-CentOS-SIG-SCLo /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo
+
 RUN yum install -y epel-release && \
     yum update -y && \
     yum install -y autoconf \
@@ -22,6 +25,7 @@ RUN yum install -y epel-release && \
                    cmake \
                    cups-devel \
                    curl \
+                   devtoolset-11 \
                    diffutils \
                    elfutils-libelf-devel \
                    findutils \
@@ -66,6 +70,7 @@ RUN yum install -y epel-release && \
     c_rehash && \
     mkdir -p /root/rpmbuild/BUILD /root/rpmbuild/RPMS /root/rpmbuild/SOURCES /root/rpmbuild/SPECS /root/rpmbuild/SRPMS
 
+
 # Fetch a newer version of CMake, because the system-provided one is _ancient_.
 # The hash is hard-coded here to mitigate the risk of supply-chain attacks.
 RUN curl --fail -sSL --connect-timeout 20 --retry 3 --output cmake-linux-$(uname -m).sh \

package-builders/Dockerfile.centos7.v2

@@ -10,6 +10,9 @@ ENV VERSION=$VERSION
 # Dummy Sentry DSN
 ENV SENTRY_DSN="https://[email protected]/dummy"
 
+COPY package-builders/centos-7-scl.repo /etc/yum.repos.d/centos-7-scl.repo
+COPY package-builders/RPM-GPG-KEY-CentOS-SIG-SCLo /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo
+
 RUN yum install -y epel-release && \
     yum update -y && \
     yum install -y bash \
@@ -18,6 +21,7 @@ RUN yum install -y epel-release && \
                    cmake \
                    cups-devel \
                    curl \
+                   devtoolset-11 \
                    diffutils \
                    elfutils-libelf-devel \
                    findutils \

package-builders/RPM-GPG-KEY-CentOS-SIG-SCLo

@@ -0,0 +1,20 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v2.0.22 (GNU/Linux)
+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+=UtPD
+-----END PGP PUBLIC KEY BLOCK-----

package-builders/centos-7-scl.repo

@@ -0,0 +1,15 @@
+[centos-sclo-sclo]
+name=CentOS-7 - SCLo sclo
+baseurl=http://vault.centos.org/centos/7.9.2009/sclo/$basearch/sclo/
+#mirrorlist=http://mirrorlist.centos.org?arch=$basearch&release=7&repo=sclo-sclo
+gpgcheck=1
+enabled=1
+gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo
+
+[centos-sclo-rh]
+name=CentOS-7 - SCLo rh
+baseurl=http://vault.centos.org/centos/7.9.2009/sclo/$basearch/rh/
+#mirrorlist=http://mirrorlist.centos.org?arch=$basearch&release=7&repo=sclo-rh
+gpgcheck=1
+enabled=1
+gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo

package-builders/entrypoint.sh

@@ -1,11 +1,15 @@
 #!/bin/sh
 
+if [ -e /opt/rh/devtoolset-11/enable ]; then
+    . /opt/rh/devtoolset-11/enable
+fi
+
 if [ -d /cmake/bin ]; then
     PATH="/cmake/bin:${PATH}"
 fi
 
 if [ -n "$NETDATA_SENTRY_DSN" ]; then
-  SENTRY_DSN="$NETDATA_SENTRY_DSN"
+    SENTRY_DSN="$NETDATA_SENTRY_DSN"
 fi
 
 fail() {