[RFC PATCH 32/42] docker: Add gentoo-mipsr5900el-cross image

[Philippe Mathieu-Daudé]

Add a Docker image providing cross toolchain for the MIPS R5900 CPU
(used on the Sony PS2).

This image is based on Gentoo and the toolchain is built using crossdev.

Recipe from:
  https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03944.html

Suggested-by: Fredrik Noring <noring@nocrew.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 tests/docker/Makefile.include                 |  3 ++
 .../gentoo-mipsr5900el-cross.docker           | 35 +++++++++++++++++++
 .../crossdev.conf                             |  5 +++
 3 files changed, 43 insertions(+)
 create mode 100644 tests/docker/dockerfiles/gentoo-mipsr5900el-cross.docker
 create mode 100644 
tests/docker/dockerfiles/gentoo-mipsr5900el-cross.docker.d/crossdev.conf

diff --git a/tests/docker/Makefile.include b/tests/docker/Makefile.include
index 93b29ad823e..3d6306c7728 100644
--- a/tests/docker/Makefile.include
+++ b/tests/docker/Makefile.include
@@ -146,6 +146,9 @@ docker-image-debian-riscv64-cross: docker-image-debian10
 docker-image-debian-s390x-cross: docker-image-debian10
 docker-image-debian-sh4-cross: docker-image-debian10
 docker-image-debian-sparc64-cross: docker-image-debian10
+docker-image-gentoo-mipsr5900el-cross: EXTRA_FILES:=$(addprefix \
+                       
$(SRC_PATH)/tests/docker/dockerfiles/gentoo-mipsr5900el-cross.docker.d/,\
+                               crossdev.conf)
 
 docker-image-travis: NOUSER=1
 
diff --git a/tests/docker/dockerfiles/gentoo-mipsr5900el-cross.docker 
b/tests/docker/dockerfiles/gentoo-mipsr5900el-cross.docker
new file mode 100644
index 00000000000..88ada20623d
--- /dev/null
+++ b/tests/docker/dockerfiles/gentoo-mipsr5900el-cross.docker
@@ -0,0 +1,35 @@
+#
+# Docker mipsel (r5900) cross-compiler target
+#
+# Using multi-stage builds, this image requires docker-17.05.0 or later.
+# (See: https://github.com/gentoo/gentoo-docker-images)
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# name the portage image
+FROM gentoo/portage:20201121 as portage
+
+# image is based on stage3-amd64
+FROM gentoo/stage3:latest
+
+# copy the entire portage volume in
+COPY --from=portage /var/db/repos/gentoo /var/db/repos/gentoo
+
+MAINTAINER Philippe Mathieu-Daudé <f4bug@amsat.org>
+
+# set CROSSDEV_OVERLAY to /usr/local/portage-crossdev
+RUN mkdir -p /usr/local/portage-crossdev/{profiles,metadata} && \
+    echo 'crossdev' > /usr/local/portage-crossdev/profiles/repo_name && \
+    echo 'masters = gentoo' > /usr/local/portage-crossdev/metadata/layout.conf 
&& \
+    chown -R portage:portage /usr/local/portage-crossdev && \
+    mkdir -p /etc/portage/repos.conf
+ADD crossdev.conf /etc/portage/repos.conf/crossdev.conf
+
+RUN emerge -qv \
+        dev-vcs/git ">=dev-libs/glib-2.0" \
+        sys-devel/crossdev \
+        sys-libs/zlib dev-lang/python
+
+RUN crossdev -s4 -t mipsr5900el-unknown-linux-gnu
+
+ENV QEMU_CONFIGURE_OPTS --cross-prefix=mipsr5900el-unknown-linux-gnu-
diff --git 
a/tests/docker/dockerfiles/gentoo-mipsr5900el-cross.docker.d/crossdev.conf 
b/tests/docker/dockerfiles/gentoo-mipsr5900el-cross.docker.d/crossdev.conf
new file mode 100644
index 00000000000..b8fa368c1c3
--- /dev/null
+++ b/tests/docker/dockerfiles/gentoo-mipsr5900el-cross.docker.d/crossdev.conf
@@ -0,0 +1,5 @@
+[crossdev]
+location = /usr/local/portage-crossdev
+priority = 10
+masters = gentoo
+auto-sync = no
-- 
2.26.2