[PATCH v2 3/4] travis: build and test on Linux with musl libc and busybox

[Đoàn Trần Công Danh <congdanhqx@xxxxxxxxx>]

Signed-off-by: Đoàn Trần Công Danh <congdanhqx@xxxxxxxxx>
---
 .travis.yml            |  8 ++++++++
 azure-pipelines.yml    | 35 +++++++++++++++++++++++++++++++++++
 ci/run-alpine-build.sh | 31 +++++++++++++++++++++++++++++++
 ci/run-docker.sh       |  4 ++++
 4 files changed, 78 insertions(+)
 create mode 100755 ci/run-alpine-build.sh

diff --git a/.travis.yml b/.travis.yml
index 069aeeff3c..0cfc3c3428 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -33,6 +33,14 @@ matrix:
         - docker
       before_install:
       script: ci/run-docker.sh
+    - env: jobname=linux-musl
+      os: linux
+      compiler:
+      addons:
+      services:
+        - docker
+      before_install:
+      script: ci/run-docker.sh
     - env: jobname=StaticAnalysis
       os: linux
       compiler:
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index f6dcc35ad4..615289167b 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -503,6 +503,41 @@ jobs:
       PathtoPublish: t/failed-test-artifacts
       ArtifactName: failed-test-artifacts
 
+- job: linux_musl
+  displayName: linux-musl
+  condition: succeeded()
+  pool:
+    vmImage: ubuntu-latest
+  steps:
+  - bash: |
+       test "$GITFILESHAREPWD" = '$(gitfileshare.pwd)' || ci/mount-fileshare.sh //gitfileshare.file.core.windows.net/test-cache gitfileshare "$GITFILESHAREPWD" "$HOME/test-cache" || exit 1
+
+       res=0
+       sudo AGENT_OS="$AGENT_OS" BUILD_BUILDNUMBER="$BUILD_BUILDNUMBER" BUILD_REPOSITORY_URI="$BUILD_REPOSITORY_URI" BUILD_SOURCEBRANCH="$BUILD_SOURCEBRANCH" BUILD_SOURCEVERSION="$BUILD_SOURCEVERSION" SYSTEM_PHASENAME="$SYSTEM_PHASENAME" SYSTEM_TASKDEFINITIONSURI="$SYSTEM_TASKDEFINITIONSURI" SYSTEM_TEAMPROJECT="$SYSTEM_TEAMPROJECT" CC=$CC MAKEFLAGS="$MAKEFLAGS" jobname=linux-musl bash -lxc ci/run-docker.sh || res=1
+
+       sudo chmod a+r t/out/TEST-*.xml
+       test ! -d t/failed-test-artifacts || sudo chmod a+r t/failed-test-artifacts
+
+       test "$GITFILESHAREPWD" = '$(gitfileshare.pwd)' || sudo umount "$HOME/test-cache" || res=1
+       exit $res
+    displayName: 'jobname=linux-musl ci/run-docker.sh'
+    env:
+      GITFILESHAREPWD: $(gitfileshare.pwd)
+  - task: PublishTestResults@2
+    displayName: 'Publish Test Results **/TEST-*.xml'
+    inputs:
+      mergeTestResults: true
+      testRunTitle: 'musl'
+      platform: Linux
+      publishRunAttachments: false
+    condition: succeededOrFailed()
+  - task: PublishBuildArtifacts@1
+    displayName: 'Publish trash directories of failed tests'
+    condition: failed()
+    inputs:
+      PathtoPublish: t/failed-test-artifacts
+      ArtifactName: failed-test-artifacts
+
 - job: static_analysis
   displayName: StaticAnalysis
   condition: succeeded()
diff --git a/ci/run-alpine-build.sh b/ci/run-alpine-build.sh
new file mode 100755
index 0000000000..c83df536e4
--- /dev/null
+++ b/ci/run-alpine-build.sh
@@ -0,0 +1,31 @@
+#!/bin/sh
+#
+# Build and test Git in Alpine Linux
+#
+# Usage:
+#   run-alpine-build.sh <host-user-id>
+#
+
+set -ex
+
+useradd () {
+	adduser -D "$@"
+}
+
+. "${0%/*}/lib-docker.sh"
+
+# Update packages to the latest available versions
+apk add --update autoconf build-base curl-dev openssl-dev expat-dev \
+	gettext pcre2-dev python3 musl-libintl >/dev/null
+
+# Build and test
+su -m -l $CI_USER -c '
+	set -ex
+	cd /usr/src/git
+	test -n "$cache_dir" && ln -s "$cache_dir/.prove" t/.prove
+	autoconf
+	echo "PYTHON_PATH=/usr/bin/python3" >config.mak
+	./configure --with-libpcre
+	make
+	make test
+'
diff --git a/ci/run-docker.sh b/ci/run-docker.sh
index be698817cb..f203db03cf 100755
--- a/ci/run-docker.sh
+++ b/ci/run-docker.sh
@@ -10,6 +10,10 @@ Linux32)
 	CI_TARGET=linux32
 	CI_CONTAINER="daald/ubuntu32:xenial"
 	;;
+linux-musl)
+	CI_TARGET=alpine
+	CI_CONTAINER=alpine
+	;;
 *)
 	exit 1 ;;
 esac
-- 
2.26.0.302.g234993491e