[Buildsystem] build rootfs in loopback to work around qemu bug (#121)

[Buildsystem] build rootfs in loopback to work around qemu bug

.cirrus.yml

@@ -3,6 +3,7 @@ docker_builder:
   env:
     TOKEN: ENCRYPTED[4e4d80e944992ff037ce22e89b29a5151ef75bf44b133db67fb3cfb5ff1f3aaf7722bf86028957fc99a07edecfbe0962]
     UPLOAD_KEY: ENCRYPTED[218507b6609fd0eb0cd00663c48a10082930967672efe5655b56118e4f515561f0bbc893dbb6a5a943d55f384ec1285c]
+    SSH_PRIVATE_KEY: ENCRYPTED[f2f0f5401824d85c731ff5e6663a2388663a776deef6ccbbaee0bb0f968718131a87bbbfebb8960b3ad686cfa8b3debe]
     matrix:
       DEVICE: beta
       DEVICE: micro

makefiles/docker-make.sh

@@ -20,7 +20,8 @@ docker run --privileged \
     -v $(pwd):/root/axiom-firmware/ \
     -w /root/axiom-firmware/ \
     -l axiom-build \
-    $([ -z "$CI" ] && echo "-it" ) \
-    vupvupvup/axiom_build:latest \
-    /bin/bash -c "stty cols $COLUMNS rows $LINES; make -f makefiles/host/main.mk -I makefiles/host -j $(nproc) $*" \
+    --env COLUMNS=$COLUMNS --env LINES=$LINES --env CI \
+    $([ -z "$CI" ] && echo "-i" ) \
+    apertushq/axiom_build:latest \
+    ./makefiles/host/docker_entry.sh $* \
 | tee -a build/build.log

makefiles/host/docker_entry.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+# this script is called from the docker-make.sh script and sets up everything in the 
+# docker container & executes make
+
+stty cols $COLUMNS rows $LINES;
+
+# this is a stupid hack to work around this bug: https://bugs.launchpad.net/qemu/+bug/1805913
+mkdir -p build/root.fs
+if [ ! -z $CI ]; then
+    mount -t tmpfs tmpfs build/root.fs
+    echo "WARNING: building rootfs in ramdisk; incremental builds suffer"
+else
+    if [ ! -f build/root.fs.loopback.img ]; then
+        truncate -s 4G build/root.fs.loopback.img
+        mkfs.btrfs build/root.fs.loopback.img
+    fi
+    losetup -d /dev/loop0
+    losetup /dev/loop0 build/root.fs.loopback.img
+    mount /dev/loop0 build/root.fs
+fi
+
+make -f makefiles/host/main.mk -I makefiles/host -j $(nproc) $*
+umount build/root.fs
+losetup -d /dev/loop0

makefiles/in_chroot/install.sh

@@ -14,12 +14,7 @@ pacman --noconfirm --needed -Syu
 pacman --noconfirm -R linux-zedboard || true
 
 # install dependencies
-# pacman -R pkgconf --noconfirm || true
 pacman --noconfirm --needed -S $(grep -vE "^\s*#" makefiles/in_chroot/requirements_pacman.txt | tr "\n" " ")
-
-# evil hack because archlinux-arm has fucked up packages
-cat /etc/ca-certificates/extracted/cadir/* > /etc/ca-certificates/extracted/tls-ca-bundle.pem
-
 pip install -r makefiles/in_chroot/requirements_pip.txt
 
 # setup users
@@ -70,7 +65,15 @@ echo 'PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/axiom/bin:/usr/axiom/script' >> /e
 (cd software/axiom-control-daemon/
     [ -d build ] || mkdir -p build
     cd build
-    cmake -G Ninja ..
+	cmake --version
+	gcc --version
+	cc --version
+	c++ --version
+	command -v g++
+	command -v c++
+	find ..
+	echo $PATH
+    cmake -G Ninja -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ ..
     ninja
     ./install_daemon.sh
 )