Problem: have to check ABI compatibility manually

Solution: automate it on Travis

.travis.yml

@@ -124,6 +124,14 @@ matrix:
         - libnorm-dev
         - libpgm-dev
         - libsodium-dev
+  - env: BUILD_TYPE=abi-compliance-checker
+    os: linux
+    dist: xenial
+    addons:
+      apt:
+        packages:
+        - abi-dumper
+        - abi-compliance-checker
     
 sudo: false
 

builds/abi-compliance-checker/ci_build.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+set -x
+
+cd ../../
+
+mkdir tmp
+BUILD_PREFIX=$PWD/tmp
+
+CONFIG_OPTS=()
+CONFIG_OPTS+=("CFLAGS=-I${BUILD_PREFIX}/include -g -Og")
+CONFIG_OPTS+=("CPPFLAGS=-I${BUILD_PREFIX}/include")
+CONFIG_OPTS+=("CXXFLAGS=-I${BUILD_PREFIX}/include -g -Og")
+CONFIG_OPTS+=("LDFLAGS=-L${BUILD_PREFIX}/lib")
+CONFIG_OPTS+=("PKG_CONFIG_PATH=${BUILD_PREFIX}/lib/pkgconfig")
+CONFIG_OPTS+=("--prefix=${BUILD_PREFIX}")
+CONFIG_OPTS+=("--enable-drafts=no")
+
+function print_abi_api_breakages() {
+   echo "ABI breakages detected:"
+   cat compat_reports/libzmq/${LATEST_VERSION}_to_HEAD/abi_affected.txt | c++filt
+   echo "API breakages detected:"
+   cat compat_reports/libzmq/${LATEST_VERSION}_to_HEAD/src_affected.txt | c++filt
+   exit 1
+}
+
+./autogen.sh
+./configure "${CONFIG_OPTS[@]}"
+make VERBOSE=1 -j5
+abi-dumper src/.libs/libzmq.so -o ${BUILD_PREFIX}/libzmq.head.dump -lver HEAD
+
+git clone --depth 1 -b latest_release https://github.com/zeromq/libzmq.git latest_release
+cd latest_release
+LATEST_VERSION=$(git describe --abbrev=0 --tags)
+./autogen.sh
+./configure "${CONFIG_OPTS[@]}"
+make VERBOSe=1 -j5
+abi-dumper src/.libs/libzmq.so -o ${BUILD_PREFIX}/libzmq.latest.dump -lver ${LATEST_VERSION}
+
+abi-compliance-checker -l libzmq -d1 ${BUILD_PREFIX}/libzmq.latest.dump -d2 ${BUILD_PREFIX}/libzmq.head.dump -list-affected || print_abi_api_breakages