Test on arm32v7-linux-gnu, ppc64le-linux-gnu and aarch64-linux-gnu.

Use docker images and qemu to test libffi for non-x86 architectures on
travis-ci.
Use the LIBFFI_TEST_OPTIMIZATION environment variable to
force specific optimization levels at test time.

.travis.yml

@@ -7,6 +7,24 @@ matrix:
   include:
     - os: osx
       env: HOST=arm-apple-darwin
+    - os: linux
+      env: HOST=ppc64le-linux-gnu LIBFFI_TEST_OPTIMIZATION="-O0"
+    - os: linux
+      env: HOST=ppc64le-linux-gnu LIBFFI_TEST_OPTIMIZATION="-O2"
+    - os: linux
+      env: HOST=ppc64le-linux-gnu LIBFFI_TEST_OPTIMIZATION="-O2 -fomit-frame-pointer"
+    - os: linux
+      env: HOST=arm32v7-linux-gnu LIBFFI_TEST_OPTIMIZATION="-O0"
+    - os: linux
+      env: HOST=arm32v7-linux-gnu LIBFFI_TEST_OPTIMIZATION="-O2"
+    - os: linux
+      env: HOST=arm32v7-linux-gnu LIBFFI_TEST_OPTIMIZATION="-O2 -fomit-frame-pointer"
+    - os: linux
+      env: HOST=aarch64-linux-gnu LIBFFI_TEST_OPTIMIZATION="-O0"
+    - os: linux
+      env: HOST=aarch64-linux-gnu LIBFFI_TEST_OPTIMIZATION="-O2"
+    - os: linux
+      env: HOST=aarch64-linux-gnu LIBFFI_TEST_OPTIMIZATION="-O2 -fomit-frame-pointer"
     - os: linux
       compiler: gcc
       env: HOST=i386-pc-linux-gnu MEVAL='export CC="$CC -m32" && CXX="$CXX -m32"'
@@ -27,7 +45,7 @@ before_install:
   - if test x"$MEVAL" != x; then eval ${MEVAL}; fi
 
 install:
-  - ./.travis/install.sh
+  - travis_wait 30 ./.travis/install.sh
 
 script:
   - if ! test x"$MEVAL" = x; then eval ${MEVAL}; fi

.travis/build-in-container.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+cd /opt
+
+./configure 
+make
+make dist
+make check RUNTESTFLAGS="-a $RUNTESTFLAGS"
+EXITCODE=$?
+gzip -c -9 */testsuite/libffi.log > libffi.log.gz
+echo ================================================================
+echo The logs are too long for travis to handle, so we compress and
+echo uuencode them.  Download, decode and uncompress if you need to
+echo read them.
+echo ================================================================
+uuencode libffi.log.gz -
+echo ================================================================
+echo ================================================================
+exit $EXITCODE
+

.travis/build.sh

@@ -1,8 +1,5 @@
 #!/bin/bash
 
-# exit this script if any commmand fails
-# set -e
-
 function build_linux()
 {
     ./autogen.sh
@@ -10,16 +7,26 @@ function build_linux()
     make
     make dist
     make check RUNTESTFLAGS="-a $RUNTESTFLAGS"
+    EXITCODE=$?
 
     gzip -c -9 */testsuite/libffi.log > libffi.log.gz
     echo ================================================================
     echo The logs are too long for travis to handle, so we compress and
     echo uuencode them.  Download, decode and uncompress if you need to
-    echo read them.
+    echo read them.  For example, if you select and save this text
+    echo as libffi.uu, run: 'cat libffi.uu | uudecode | gzip -d | less'.
     echo ================================================================
     uuencode libffi.log.gz -
     echo ================================================================
     echo ================================================================
+
+    exit $EXITCODE
+}
+
+function build_foreign_linux()
+{
+    docker run --rm -t -i -v `pwd`:/opt --rm -ti -e LIBFFI_TEST_OPTIMIZATION="${LIBFFI_TEST_OPTIMIZATION}" $2 bash -c /opt/.travis/build-in-container.sh
+    exit $?
 }
 
 function build_ios()
@@ -28,8 +35,8 @@ function build_ios()
 # export PYTHON_BIN=/usr/local/bin/python
     ./generate-darwin-source-and-headers.py
     xcodebuild -showsdks
-    xcodebuild -project libffi.xcodeproj -target "libffi-iOS" -configuration Release -sdk iphoneos10.3
-    find ./ 
+    xcodebuild -project libffi.xcodeproj -target "libffi-iOS" -configuration Release -sdk iphoneos11.4
+    exit $?
 }
 
 ./autogen.sh
@@ -37,6 +44,18 @@ case "$HOST" in
     arm-apple-darwin*)
 	build_ios
 	;;
+    arm32v7-linux-gnu)
+        build_foreign_linux arm moxielogic/arm32v7-ci-build-container:latest 
+	;;
+    aarch64-linux-gnu)
+        build_foreign_linux aarch64 moxielogic/aarch64-ci-build-container:latest 
+	;;
+    ppc64le-linux-gnu)
+        build_foreign_linux ppc64le moxielogic/ppc64le-ci-build-container:latest 
+	;;
+    s390x-linux-gnu)
+	build_foreign_linux s390x s390x/ubuntu
+	;;
     *)
 	build_linux
 	;;

.travis/install.sh

@@ -2,24 +2,39 @@
 set -x
 
 if [[ $TRAVIS_OS_NAME != 'linux' ]]; then
-  brew update
+  brew update > brew-update.log 2>&1
   # fix an issue with libtool on travis by reinstalling it
   brew uninstall libtool;
   brew install libtool dejagnu;
 else
+  sudo apt-get clean # clear the cache
   sudo apt-get update
-  sudo apt-get install dejagnu texinfo sharutils
-  case "$HOST" in
-    i386-pc-linux-gnu)
-	sudo apt-get install gcc-multilib g++-multilib
-	;;
-    moxie-elf)
-	echo 'deb https://repos.moxielogic.org:7114/MoxieLogic moxiedev main' | sudo tee -a /etc/apt/sources.list
-	sudo apt-get clean # clear the cache
-	sudo apt-get update ## -qq
-	# debug...
-	curl https://repos.moxielogic.org:7114/MoxieLogic/dists/moxiedev/main/binary-amd64/Packages
-	sudo apt-get install -y --allow-unauthenticated moxielogic-moxie-elf-gcc moxielogic-moxie-elf-gcc-c++ moxielogic-moxie-elf-gcc-libstdc++ moxielogic-moxie-elf-gdb-sim
-	;;
+  case $HOST in
+      arm32v7-linux-gnu | aarch64-linux-gnu | ppc64le-linux-gnu | s390x-linux-gnu)
+	  sudo apt-get install qemu-user-static
+	  ;;
+      i386-pc-linux-gnu)
+	  sudo apt-get install gcc-multilib g++-multilib;
+	  ;;
+      moxie-elf)
+	  echo 'deb https://repos.moxielogic.org:7114/MoxieLogic moxiedev main' | sudo tee -a /etc/apt/sources.list
+	  sudo apt-get clean # clear the cache
+	  sudo apt-get update ## -qq
+	  # debug...
+	  curl https://repos.moxielogic.org:7114/MoxieLogic/dists/moxiedev/main/binary-amd64/Packages
+	  sudo apt-get update
+	  sudo apt-get install -y --allow-unauthenticated moxielogic-moxie-elf-gcc moxielogic-moxie-elf-gcc-c++ moxielogic-moxie-elf-gcc-libstdc++ moxielogic-moxie-elf-gdb-sim
+	  ;;
+      i686-w64-mingw32)
+	  sudo apt-get install gcc-mingw-w64-i686 binutils-mingw-w64-i686 wine;
+	  ;;
+  esac
+  case $HOST in
+      arm32v7-linux-gnu | aarch64-linux-gnu | ppc64le-linux-gnu | s390x-linux-gnu)
+          # don't install host tools
+          ;;
+      *)
+	  sudo apt-get install dejagnu texinfo sharutils
+	  ;;
   esac
 fi

testsuite/lib/libffi.exp

@@ -266,6 +266,12 @@ proc libffi-dg-test { prog do_what extra_tool_flags } {
     return [libffi-dg-test-1 target_compile $prog $do_what $extra_tool_flags]
 }
 
+proc libffi-dg-prune { target_triplet text } {
+    # We get this with some qemu emulated systems (eg. ppc64le-linux-gnu)
+    regsub -all "(^|\n)\[^\n\]*unable to perform all requested operations" $text "" text
+    return $text
+}
+
 proc libffi-init { args } {
     global gluefile wrap_flags;
     global srcdir
@@ -477,22 +483,37 @@ proc libffi-dg-runtest { testcases default-extra-flags } {
 proc run-many-tests { testcases extra_flags } {
     global compiler_vendor
     global has_gccbug
+    global env
     switch $compiler_vendor {
       "clang" {
-	set common "-W -Wall"
-	set optimizations { "-O0" "-O2" }
+        set common "-W -Wall"
+        if [info exists env(LIBFFI_TEST_OPTIMIZATION)] {
+	  set optimizations [ list $env(LIBFFI_TEST_OPTIMIZATION) ]
+        } else { 
+          set optimizations { "-O0" "-O2" }
+        }
       }
       "gnu" {
         set common "-W -Wall -Wno-psabi"
-        set optimizations { "-O0" "-O2" "-O2 -fomit-frame-pointer" }
+        if [info exists env(LIBFFI_TEST_OPTIMIZATION)] {
+	  set optimizations [ list $env(LIBFFI_TEST_OPTIMIZATION) ]
+        } else { 
+          set optimizations { "-O0" "-O2" "-O2 -fomit-frame-pointer" }
+        }
       }
       default {
         # Assume we are using the vendor compiler.
         set common ""
-        set optimizations { "" }
+        if [info exists env(LIBFFI_TEST_OPTIMIZATION)] {
+	  set optimizations [ list $env(LIBFFI_TEST_OPTIMIZATION) ]
+        } else { 
+          set optimizations { "" }
+        }
       }
     }
 
+    info exists env(LD_LIBRARY_PATH)
+
     set targetabis { "" }
     if [string match $compiler_vendor "gnu"] {
         if [libffi_feature_test "#ifdef __i386__"] {