CI: test cross compilation, test on big endian...

.github/workflows/cross.yml

@@ -0,0 +1,197 @@
+# test GAP cross compilation
+name: cross
+
+# Trigger the workflow on push or pull request
+on:
+  pull_request:
+  push:
+
+concurrency:
+  # group by workflow and ref; the last slightly strange component ensures that for pull
+  # requests, we limit to 1 concurrent job, but for the master branch we don't
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.ref != 'refs/heads/master' || github.run_number }}
+  # Cancel intermediate builds, but only if it is a pull request build.
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
+
+env:
+  # default config flags: enable debug asserts
+  CONFIGFLAGS: "--enable-debug"
+
+jobs:
+  test_on_arch:
+    # The host should always be linux
+    runs-on: ubuntu-22.04
+    name: Build on ${{ matrix.distro }} ${{ matrix.arch }}
+
+    # Run steps on a matrix of arch/distro combinations
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - arch: aarch64
+            distro: ubuntu18.04
+          - arch: ppc64le
+            distro: alpine_latest
+          - arch: s390x
+            distro: fedora_latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Download required GAP packages
+        run: |
+          wget https://github.com/gap-system/PackageDistro/releases/download/latest/packages-required.tar.gz
+          mkdir pkg
+          cd pkg
+          tar xvf ../packages-required.tar.gz
+
+      - name: Build GAP and run tests
+        uses: uraimo/run-on-arch-action@v2
+        with:
+          arch: ${{ matrix.arch }}
+          distro: ${{ matrix.distro }}
+
+          # Not required, but speeds up builds
+          githubToken: ${{ github.token }}
+
+          # The shell to run commands with in the container
+          shell: /bin/sh
+
+          # Install some dependencies in the container. This speeds up builds if
+          # you are also using githubToken. Any dependencies installed here will
+          # be part of the container image that gets cached, so subsequent
+          # builds don't have to re-install them. The image layer is cached
+          # publicly in your project's package repository, so it is vital that
+          # no secrets are present in the container state or logs.
+          install: |
+            case "${{ matrix.distro }}" in
+              ubuntu*|jessie|stretch|buster|bullseye)
+                apt-get update -q -y
+                apt-get install -q -y git build-essential expect autoconf libgmp-dev libreadline-dev zlib1g-dev
+                ;;
+              fedora*)
+                dnf -y update
+                dnf -y install diffutils git gcc gcc-c++ make expect autoconf gmp gmp-devel readline readline-devel zlib zlib-devel
+                ;;
+              alpine*)
+                apk update
+                apk add bash git build-base expect autoconf gmp-dev readline-dev zlib-dev
+                ;;
+            esac
+
+          # Do the thing
+          run: |
+            set -x
+            git config --global --add safe.directory $PWD  # see https://github.com/gap-system/gap/issues/4861
+            ./autogen.sh
+            ./configure
+            make -j2 V=1
+            make citests
+
+  cross_compile:
+    # The host should always be linux
+    runs-on: ubuntu-22.04
+    name: Cross compiler for s390x
+
+    steps:
+      - name: Install Cross-Compile Support
+        uses: fingolfin/gha-ubuntu-cross@patch-1  # FIXME: see https://github.com/cyberjunk/gha-ubuntu-cross/pull/8
+        with:
+          arch: s390x
+
+      - name: Install general build dependencies
+        run: sudo apt-get install -q -y git autoconf
+
+      - name: Install cross compile dependencies
+        run: sudo apt-get install -q -y git libgmp-dev:s390x libreadline-dev:s390x zlib1g-dev:s390x
+
+      - uses: actions/checkout@v4
+
+      - run: ./autogen.sh
+
+      - name: Native compile
+        run: |
+          # When building a git snapshot, configure & compile a native version of GAP to
+          # generate ffdata.{c,h}, c_oper1.c and c_type1.c -- in a GAP release tarball
+          # this is not necessary.
+          mkdir native-build
+          cd native-build
+          ../configure --without-readline
+          make -j2
+          cp build/c_*.c build/ffdata.* ../src/
+          cd ..
+
+      - name: Configure
+        run: ./configure --host="s390x-linux-gnu"
+
+      - name: Cross compile
+        run: make -j2 V=1 all build-testlibgap build-testkernel
+
+      - name: Fixup sysinfo.gap
+        run: rm sysinfo.gap && make SYSINFO_CC=gcc SYSINFO_CXX=g++ sysinfo.gap
+
+      - name: Download required GAP packages
+        run: make bootstrap-pkg-minimal
+
+      - name: Run tests in VM
+        uses: uraimo/run-on-arch-action@v2
+        with:
+          arch: s390x
+          distro: ubuntu22.04
+
+          # Not required, but speeds up builds
+          githubToken: ${{ github.token }}
+
+          # The shell to run commands with in the container
+          shell: /bin/sh
+
+          # Install some dependencies in the container. This speeds up builds if
+          # you are also using githubToken. Any dependencies installed here will
+          # be part of the container image that gets cached, so subsequent
+          # builds don't have to re-install them. The image layer is cached
+          # publicly in your project's package repository, so it is vital that
+          # no secrets are present in the container state or logs.
+          install: |
+              apt-get update -q -y
+              # we need build-essential for make and gcc (the latter is used by gac and
+              # hence by the tests involving mockpkg)
+              apt-get install -q -y build-essential git expect libgmp10 libreadline8 zlib1g
+
+          # Do the thing
+          run: |
+            set -x
+            git config --global --add safe.directory $PWD  # see https://github.com/gap-system/gap/issues/4861
+            make citests
+
+  openbsd:
+    runs-on: ubuntu-latest
+    name: Test in OpenBSD
+    env:
+      AUTOCONF_VERSION: 2.71
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download required GAP packages
+        run: |
+          wget https://github.com/gap-system/PackageDistro/releases/download/latest/packages-required.tar.gz
+          mkdir pkg
+          cd pkg
+          tar xvf ../packages-required.tar.gz
+
+      - name: Test in OpenBSD
+        id: test
+        uses: vmactions/openbsd-vm@v1
+        with:
+          envs: 'AUTOCONF_VERSION'
+          usesh: true
+          prepare: |
+            pkg_add bash gmake autoconf-2.71 expect gmp
+
+          # Do the thing
+          run: |
+            set -x
+            git config --global --add safe.directory $PWD  # see https://github.com/gap-system/gap/issues/4861
+            rm -rf extern  # ensure we don't build and link against bundled libraries
+            ./autogen.sh
+            ./configure --with-gmp=/usr/local --without-readline
+            gmake -j2 V=1
+            gmake check
+            #gmake citests

Makefile.rules

@@ -166,6 +166,14 @@ SOURCES_ALL := $(SOURCES)
 SOURCES_ALL += src/compstat_empty.c
 SOURCES_ALL += src/main.c
 
+
+########################################################################
+#
+########################################################################
+
+SYSINFO_CC := $(CC)
+SYSINFO_CXX := $(CXX)
+
 ########################################################################
 # Preprocessor flags
 #
@@ -907,8 +915,8 @@ GAP_OBJEXT=o
 
 # Build flags for use by `gac` resp. package build systems: these correspond to
 # the usual variables as used by e.g. autotools, with the added prefix `GAP_`.
-GAP_CC="$(CC)"
-GAP_CXX="$(CXX)"
+GAP_CC="$(SYSINFO_CC)"
+GAP_CXX="$(SYSINFO_CXX)"
 GAP_CFLAGS="$(SYSINFO_CFLAGS)"
 GAP_CXXFLAGS="$(SYSINFO_CXXFLAGS)"
 GAP_CPPFLAGS="$(SYSINFO_CPPFLAGS)"

dev/gaptest.expect

@@ -1,4 +1,4 @@
-set timeout 10
+set timeout 30
 
 # from https://serverfault.com/a/981762
 expect_before {

dev/gaptest2.expect

@@ -1,4 +1,4 @@
-set timeout 10
+set timeout 30
 
 # from https://serverfault.com/a/981762
 expect_before {