Build test binaries in docker

Author: teqwve

README.md

@@ -107,6 +107,17 @@ To run test suit use 'check' target, e.g in build directory run:
 
     make check
 
+note that sio2jail may not support newer gcc / libc versions you may be using
+(#40). If so you can enable compiling test binaries in docker with cmake option:
+
+    -DTEST_COMPILER_IN_DOCKER=YES
+
+By default debian bullseye and gcc 10 will be used. You use other versions with
+following cmake options:
+
+    -DTEST_COMPILER_IN_DOCKER_DEBIAN_TAG="bookworm"
+    -DTEST_COMPILER_IN_DOCKER_GCC_VERSION="12"
+
 Notes for developers
 --------------------
 

test/src/CMakeLists.txt

@@ -5,6 +5,36 @@ SET(CMAKE_CXX_FLAGS "-std=c++17 -lm -static -O2")
 SET(CMAKE_CXX_FLAGS_DEBUG "")
 SET(CMAKE_CXX_FLAGS_RELEASE "")
 
+IF(NOT DEFINED TEST_COMPILER_IN_DOCKER)
+    SET(TEST_COMPILER_IN_DOCKER "NO")
+ENDIF()
+
+IF(TEST_COMPILER_IN_DOCKER STREQUAL "YES")
+    IF(NOT DEFINED TEST_COMPILER_IN_DOCKER_DEBIAN_TAG)
+        SET(TEST_COMPILER_IN_DOCKER_DEBIAN_TAG "bullseye")
+    ENDIF()
+
+    IF(NOT DEFINED TEST_COMPILER_IN_DOCKER_GCC_VERSION)
+        SET(TEST_COMPILER_IN_DOCKER_GCC_VERSION "10")
+    ENDIF()
+
+    SET(CMAKE_C_COMPILER "${CMAKE_CURRENT_SOURCE_DIR}/compiler/docker-gcc.sh")
+    SET(CMAKE_C_FLAGS "-s2j-debian-image-tag ${TEST_COMPILER_IN_DOCKER_DEBIAN_TAG} \
+        -s2j-gcc-version ${TEST_COMPILER_IN_DOCKER_GCC_VERSION} \
+        -s2j-gcc-command gcc-${TEST_COMPILER_IN_DOCKER_GCC_VERSION} \
+        -s2j-mount ${CMAKE_SOURCE_DIR} \
+        -s2j-mount ${CMAKE_BINARY_DIR} \
+        ${CMAKE_C_FLAGS}")
+    SET(CMAKE_CXX_COMPILER "${CMAKE_CURRENT_SOURCE_DIR}/compiler/docker-gcc.sh")
+    SET(CMAKE_CXX_FLAGS "-s2j-debian-image-tag ${TEST_COMPILER_IN_DOCKER_DEBIAN_TAG} \
+        -s2j-gcc-version ${TEST_COMPILER_IN_DOCKER_GCC_VERSION} \
+        -s2j-gcc-command g++-${TEST_COMPILER_IN_DOCKER_GCC_VERSION} \
+        -s2j-mount ${CMAKE_SOURCE_DIR} \
+        -s2j-mount ${CMAKE_BINARY_DIR} \
+        ${CMAKE_CXX_FLAGS}")
+ENDIF()
+
+
 # Time tests
 ADD_EXECUTABLE(1-sec-prog 1-sec-prog.c)
 ADD_EXECUTABLE(infinite-loop infinite-loop.c)

test/src/compiler/Dockerfile

@@ -0,0 +1,11 @@
+ARG DEBIAN_IMAGE_TAG
+FROM debian:${DEBIAN_IMAGE_TAG}
+
+ARG GCC_VERSION
+RUN apt update && \
+    apt install -y \
+        build-essential \
+        gcc-${GCC_VERSION} \
+        gcc-${GCC_VERSION}-multilib \
+        g++-${GCC_VERSION} \
+        g++-${GCC_VERSION}-multilib

test/src/compiler/docker-gcc.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+set -e
+
+s2j_debian_image_tag="bullseye"
+s2j_gcc_command="gcc"
+s2j_gcc_version="10"
+s2j_mounts=()
+gcc_args=()
+
+while [ -n "$1" ]; do
+    case "$1" in
+        "-s2j-debian-image-tag")
+            shift
+            s2j_debian_image_tag="$1"
+            ;;
+        "-s2j-gcc-command")
+            shift
+            s2j_gcc_command="$1"
+            ;;
+        "-s2j-gcc-version")
+            shift
+            s2j_gcc_version="$1"
+            ;;
+        "-s2j-mount")
+            shift
+            s2j_mounts+=("--volume=$1:$1")
+            ;;
+        *)
+            gcc_args+=("$1")
+            ;;
+    esac
+    shift 1
+done
+
+gcc_image_name="sio2jail-compiler-${s2j_debian_image_tag}-${s2j_gcc_version}"
+
+docker build \
+    --tag "${gcc_image_name}:latest" \
+    --build-arg "DEBIAN_IMAGE_TAG=${s2j_debian_image_tag}" \
+    --build-arg "GCC_VERSION=${s2j_gcc_version}" \
+    "$(dirname "${BASH_SOURCE}")"
+
+docker run \
+    --rm \
+    --interactive \
+    --user="$(id -u):$(id -g)" \
+    --workdir="$PWD" \
+    "${s2j_mounts[@]}" \
+    "${gcc_image_name}" \
+    "${s2j_gcc_command}" \
+    "${gcc_args[@]}"