travis: build and test on Linux with musl libc and busybox

Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

4 files changed, 16 insertions, 0 deletions

diff --git a/ci/install-docker-dependencies.sh b/ci/install-docker-dependencies.sh
index a104c61..26a6689 100755
--- a/ci/install-docker-dependencies.sh
+++ b/ci/install-docker-dependencies.sh
@@ -11,4 +11,8 @@ Linux32)
 			libssl-dev libexpat-dev gettext python >/dev/null
 	'
 	;;
+linux-musl)
+	apk add --update build-base curl-dev openssl-dev expat-dev gettext \
+		pcre2-dev python3 musl-libintl perl-utils ncurses >/dev/null
+	;;
 esac
diff --git a/ci/lib.sh b/ci/lib.sh
index 8048335..e9a5c51 100755
--- a/ci/lib.sh
+++ b/ci/lib.sh
@@ -195,6 +195,11 @@ GIT_TEST_GETTEXT_POISON)
 Linux32)
 	CC=gcc
 	;;
+linux-musl)
+	CC=gcc
+	MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=/usr/bin/python3 USE_LIBPCRE2=Yes"
+	MAKEFLAGS="$MAKEFLAGS NO_REGEX=Yes ICONV_OMITS_BOM=Yes"
+	;;
 esac
 
 MAKEFLAGS="$MAKEFLAGS CC=${CC:-cc}"
diff --git a/ci/run-docker-build.sh b/ci/run-docker-build.sh
index 4a15349..8d47a5f 100755
--- a/ci/run-docker-build.sh
+++ b/ci/run-docker-build.sh
@@ -18,6 +18,10 @@ case "$jobname" in
 Linux32)
 	switch_cmd="linux32 --32bit i386"
 	;;
+linux-musl)
+	switch_cmd=
+	useradd () { adduser -D "$@"; }
+	;;
 *)
 	exit 1
 	;;
diff --git a/ci/run-docker.sh b/ci/run-docker.sh
index 3881f99..37fa372 100755
--- a/ci/run-docker.sh
+++ b/ci/run-docker.sh
@@ -9,6 +9,9 @@ case "$jobname" in
 Linux32)
 	CI_CONTAINER="daald/ubuntu32:xenial"
 	;;
+linux-musl)
+	CI_CONTAINER=alpine
+	;;
 *)
 	exit 1
 	;;