Add Windows MinGW Static Library (@neptoess, #564)

Co-authored-by: neptoess <[email protected]>

Author: neptoess

.travis.yml

@@ -1,5 +1,6 @@
 language: go
 osx_image: xcode9.2
+go_import_path: github.com/confluentinc/confluent-kafka-go
 env:
  global:
   - PATH="$PATH:$GOPATH/bin"
@@ -46,6 +47,16 @@ jobs:
    - LD_LIBRARY_PATH="$HOME/gopath/src/github.com/confluentinc/confluent-kafka-go/tmp-build/lib"
    - DYLD_LIBRARY_PATH="$HOME/gopath/src/github.com/confluentinc/confluent-kafka-go/tmp-build/lib"
    - LIBRDKAFKA_VERSION=master
+ - name: "Go 1.16 Windows bundled librdkafka"
+   go: "1.16"
+   os: windows
+   env:
+    - EXPECT_LINK_INFO="static"
+ - name: "Go 1.14 Windows bundled librdkafka"
+   go: "1.14"
+   os: windows
+   env:
+    - EXPECT_LINK_INFO="static"
 
 before_install:
   - if [[ $TRAVIS_OS_NAME == linux ]]; then wget -qO - https://packages.confluent.io/deb/5.4/archive.key | sudo apt-key add - ; fi
@@ -55,6 +66,13 @@ before_install:
   - rm -rf tmp-build
   - if [[ -n $BUILD_TYPE ]]; then bash mk/bootstrap-librdkafka.sh ${LIBRDKAFKA_VERSION} tmp-build ; fi
   - go get -u golang.org/x/lint/golint && touch .do_lint
+  - |-
+      case $TRAVIS_OS_NAME in
+        windows)
+          ./mk/setup-msys2-mingw64.sh
+          export PATH=/C/tools/msys64/mingw64/bin:$PATH
+          export MAKE=mingw32-make  # so that Autotools can find it
+      esac
 
 install:
   - for dir in kafka examples ; do (cd $dir && go get ${BUILD_TYPE} ./...) ; done

kafka/librdkafka_vendor/bundle-import.sh

@@ -69,7 +69,7 @@ $build_tag
 
 package kafka
 
-// #cgo CFLAGS: -DUSE_VENDORED_LIBRDKAFKA
+// #cgo CFLAGS: -DUSE_VENDORED_LIBRDKAFKA -DLIBRDKAFKA_STATICLIB
 // #cgo LDFLAGS: \${SRCDIR}/librdkafka_vendor/${dpath} $dynlibs
 import "C"
 
@@ -99,7 +99,7 @@ for f in rdkafka.h LICENSES.txt ; do
 done
 
 
-for btype in glibc_linux musl_linux darwin ; do
+for btype in glibc_linux musl_linux darwin windows ; do
     lib=$bdir/librdkafka_${btype}.a
     pc=${lib/%.a/.pc}
     [[ -f $lib ]] || (echo "Expected file $lib missing" ; exit 1)

mk/setup-msys2-mingw64.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+# From https://docs.travis-ci.com/user/reference/windows/#how-do-i-use-msys2
+
+set -e
+
+[[ ! -f C:/tools/msys64/msys2_shell.cmd ]] && rm -rf C:/tools/msys64
+choco uninstall -y mingw
+choco upgrade --no-progress -y msys2
+export msys2='cmd //C RefreshEnv.cmd '
+export msys2+='& set MSYS=winsymlinks:nativestrict '
+export msys2+='& C:\\tools\\msys64\\msys2_shell.cmd -defterm -no-start'
+export mingw64="$msys2 -mingw64 -full-path -here -c "\"\$@"\" --"
+export msys2+=" -msys2 -c "\"\$@"\" --"
+$msys2 pacman --sync --noconfirm --needed mingw-w64-x86_64-toolchain
+## Install more MSYS2 packages from https://packages.msys2.org/base here
+taskkill //IM gpg-agent.exe //F || true  # https://travis-ci.community/t/4967