Add CI checks for OpenBSD (libevent#1326)

Initially 6.9 and 7.1 had been added, however due to some issues (you can read
about them below) 6.9 had been disabled.

netbsd 6.9 does not have correct library namings for autotools:

    2022-08-17T04:59:58.8339420Z libtool: link: (cd ".libs" && rm -f "libevent.so.1.0" && ln -s "libevent-2.2.so.1.0" "libevent.so.1.0")

    $ grep ^library_names= libevent.la·
    library_names='libevent-2.2.so.1.0 libevent.so.1.0'

    # And this is wrong, it should be:
    libtool: link: (cd ".libs" && rm -f "libevent-2.2.so.1" && ln -s "libevent-2.2.so.1.0.0" "libevent-2.2.so.1")
    libtool: link: (cd ".libs" && rm -f "libevent.so" && ln -s "libevent-2.2.so.1.0.0" "libevent.so")
    library_names='libevent-2.2.so.1.0.0 libevent-2.2.so.1 libevent.so'

**And I think that 7.1 should also fail, however it has system-wide libevent installed with evdns in the libevent.so**

Also there are some issues with `TEST_EXPORT_SHARED` test, because of libraries naming:

    2022-09-13T06:38:29.2150790Z [test-export] test for install tree(in system-wide path)
    2022-09-13T06:38:29.2151500Z [test-export] fail: link core and run core expects success but gets failure.
    2022-09-13T06:38:29.2063870Z /usr/bin/cc CMakeFiles/test-export.dir/test-export.c.o -o test-export   -L/usr/local/lib  -Wl,-z,origin,-rpath,/usr/local/lib -levent_core-2.2 -lpthread -Wl,-rpath-link,/usr/X11R6/lib:/usr/local/lib·
    2022-09-13T06:38:29.2152190Z ld: error: unable to find library -levent_core-2.2

    2022-09-13T06:38:28.3915680Z -- Install configuration: "Release"
    2022-09-13T06:38:28.3916700Z -- Up-to-date: /usr/local/lib/libevent_core-2.2.so.1.0.0
    2022-09-13T06:38:28.3917110Z -- Up-to-date: /usr/local/lib/libevent_core-2.2.so.1
    2022-09-13T06:38:28.3917480Z -- Up-to-date: /usr/local/lib/libevent_core.so
    # no libevent_core-2.2.so

So I have to disable it too.

Co-authored-by: Azat Khuzhin <[email protected]>

.github/workflows/build.yml

@@ -923,3 +923,191 @@ jobs:
           name: freebsd-${{ matrix.release }}-autotools-${{ matrix.EVENT_MATRIX }}-build
           path: build
 
+  openbsd-cmake-job:
+    runs-on: macos-12
+    if: "!contains(github.event.head_commit.message, 'ci/openbsd skip') && !contains(github.event.head_commit.message, 'ci/openbsd/cmake skip')"
+    strategy:
+      fail-fast: false
+      matrix:
+        release: [
+          # 6.9 has some issues with autoconf/autotools [1].
+          #   [1]: https://github.com/libevent/libevent/pull/1326#issuecomment-1229531718
+          #"6.9",
+          "7.1",
+        ]
+        EVENT_MATRIX:
+          - NONE
+          - NO_SSL
+          - DISABLE_OPENSSL
+          - DISABLE_THREAD_SUPPORT
+          - DISABLE_DEBUG_MODE
+          - DISABLE_MM_REPLACEMENT
+          - TEST_EXPORT_STATIC
+          # For now this test is disabled due to incorrect library paths [1].
+          #   [1]: https://github.com/libevent/libevent/pull/1326#issuecomment-1245159690
+          #
+          # - TEST_EXPORT_SHARED
+
+    steps:
+      - uses: actions/[email protected]
+
+      - name: Cache Build
+        uses: actions/cache@v2
+        with:
+          path: build
+          key: openbsd-${{ matrix.release }}-cmake-${{ matrix.EVENT_MATRIX }}-v1
+
+      - name: Build
+        uses: vmactions/openbsd-vm@v0
+        with:
+          release: ${{ matrix.release }}
+          prepare: |
+            pkg_add  mbedtls cmake python3
+          usesh: true
+          run: |
+            if [ "${{ matrix.EVENT_MATRIX }}" == "DISABLE_OPENSSL" ]; then
+              EVENT_CMAKE_OPTIONS="-DEVENT__DISABLE_OPENSSL=ON"
+            
+            elif [ "${{ matrix.EVENT_MATRIX }}" == "NO_SSL" ]; then
+              EVENT_CMAKE_OPTIONS="-DEVENT__DISABLE_OPENSSL=ON -DEVENT__DISABLE_MBEDTLS=ON"
+            
+            elif [ "${{ matrix.EVENT_MATRIX }}" == "DISABLE_THREAD_SUPPORT" ]; then
+              EVENT_CMAKE_OPTIONS="-DEVENT__DISABLE_THREAD_SUPPORT=ON"
+            
+            elif [ "${{ matrix.EVENT_MATRIX }}" == "DISABLE_DEBUG_MODE" ]; then
+              EVENT_CMAKE_OPTIONS="-DEVENT__DISABLE_DEBUG_MODE=ON"
+            
+            elif [ "${{ matrix.EVENT_MATRIX }}" == "DISABLE_MM_REPLACEMENT" ]; then
+              EVENT_CMAKE_OPTIONS="-DEVENT__DISABLE_MM_REPLACEMENT=ON"
+            
+            elif [ "${{ matrix.EVENT_MATRIX }}" == "TEST_EXPORT_STATIC" ]; then
+              EVENT_CMAKE_OPTIONS="-DEVENT__LIBRARY_TYPE=STATIC -DEVENT__DISABLE_TESTS=ON -DEVENT__DISABLE_SAMPLES=ON"
+            
+            elif [ "${{ matrix.EVENT_MATRIX }}" == "TEST_EXPORT_SHARED" ]; then
+              EVENT_CMAKE_OPTIONS="-DEVENT__LIBRARY_TYPE=SHARED -DEVENT__DISABLE_TESTS=ON -DEVENT__DISABLE_SAMPLES=ON"
+            
+            else
+              EVENT_CMAKE_OPTIONS=""
+            fi
+            EVENT_CMAKE_OPTIONS="$EVENT_CMAKE_OPTIONS -DMBEDTLS_ROOT_DIR=/usr/local/opt/mbedtls@2"
+            
+            mkdir -p build
+            cd build
+            echo [cmake]: cmake .. $EVENT_CMAKE_OPTIONS
+            cmake .. $EVENT_CMAKE_OPTIONS || (rm -rf * && cmake .. $EVENT_CMAKE_OPTIONS)
+            cmake --build .
+
+      - name: Test
+        uses: nick-fields/retry@v2
+        with:
+          max_attempts: 5
+          timeout_minutes: 20
+          shell: bash
+          command: |
+            ssh openbsd sh <<EOF
+            cd $GITHUB_WORKSPACE
+            JOBS=1
+            export CTEST_PARALLEL_LEVEL=$JOBS
+            export CTEST_OUTPUT_ON_FAILURE=1
+            cd build
+            if [ "${{ matrix.EVENT_MATRIX }}" == "TEST_EXPORT_STATIC" ]; then
+              python3 ../test-export/test-export.py static
+            elif [ "${{ matrix.EVENT_MATRIX }}" == "TEST_EXPORT_SHARED" ]; then
+              python3 ../test-export/test-export.py shared
+            else
+              cmake --build . --target verify
+            fi
+            EOF
+
+      - uses: actions/upload-artifact@v1
+        if: failure()
+        with:
+          name: openbsd-${{ matrix.release }}-cmake-${{ matrix.EVENT_MATRIX }}-build
+          path: .
+
+  openbsd-autotools-job:
+    runs-on: macos-12
+    if: "!contains(github.event.head_commit.message, 'ci/openbsd skip') && !contains(github.event.head_commit.message, 'ci/openbsd/autotools skip')"
+    strategy:
+      fail-fast: false
+      matrix:
+        release: [
+          # 6.9 has some issues with autoconf/autotools [1].
+          #   [1]: https://github.com/libevent/libevent/pull/1326#issuecomment-1229531718
+          #"6.9",
+          "7.1",
+        ]
+        EVENT_MATRIX:
+          - NONE
+          - NO_SSL
+          - DISABLE_OPENSSL
+          - DISABLE_THREAD_SUPPORT
+          - DISABLE_DEBUG_MODE
+          - DISABLE_MM_REPLACEMENT
+
+    steps:
+      - uses: actions/[email protected]
+
+      - name: Cache Build
+        uses: actions/cache@v2
+        with:
+          path: build
+          key: openbsd-${{ matrix.release }}-autotools-${{ matrix.EVENT_MATRIX }}-v1
+
+
+      - name: Build
+        uses: vmactions/openbsd-vm@v0
+        with:
+          release: ${{ matrix.release }}
+          prepare: |
+            pkg_add  mbedtls  python3 automake-1.16.3  autoconf-2.71  libtool pkgconf
+          usesh: true
+          run: |
+            export AUTOMAKE_VERSION=1.16
+            export AUTOCONF_VERSION=2.71
+            
+            if [ "${{ matrix.EVENT_MATRIX }}" == "DISABLE_OPENSSL" ]; then
+              EVENT_CONFIGURE_OPTIONS="--disable-openssl"
+            
+            elif [ "${{ matrix.EVENT_MATRIX }}" == "NO_SSL" ]; then
+              EVENT_CONFIGURE_OPTIONS="--disable-openssl --disable-mbedtls"
+            
+            elif [ "${{ matrix.EVENT_MATRIX }}" == "DISABLE_THREAD_SUPPORT" ]; then
+              EVENT_CONFIGURE_OPTIONS="--disable-thread-support"
+            
+            elif [ "${{ matrix.EVENT_MATRIX }}" == "DISABLE_DEBUG_MODE" ]; then
+              EVENT_CONFIGURE_OPTIONS="--disable-debug-mode"
+            
+            elif [ "${{ matrix.EVENT_MATRIX }}" == "DISABLE_MM_REPLACEMENT" ]; then
+              EVENT_CONFIGURE_OPTIONS="--disable-malloc-replacement"
+            
+            else
+              EVENT_CONFIGURE_OPTIONS=""
+            fi
+            
+            ./autogen.sh
+            mkdir -p build
+            cd build
+            echo [configure]: ../configure $EVENT_CONFIGURE_OPTIONS
+            ../configure $EVENT_CONFIGURE_OPTIONS
+            make V=1
+
+      - name: Test
+        uses: nick-fields/retry@v2
+        with:
+          max_attempts: 5
+          timeout_minutes: 20
+          shell: bash
+          command: |
+            ssh openbsd sh <<EOF
+            cd $GITHUB_WORKSPACE
+            JOBS=1
+            cd build
+            make verify
+            EOF
+
+      - uses: actions/upload-artifact@v1
+        if: failure()
+        with:
+          name: openbsd-${{ matrix.release }}-autotools-${{ matrix.EVENT_MATRIX }}-build
+          path: .

test-export/test-export.py

@@ -26,10 +26,7 @@
 
 
 def exec_cmd(cmd, silent):
-    if silent:
-        p = subprocess.Popen(cmd, stdout=FNULL, stderr=FNULL, shell=True)
-    else:
-        p = subprocess.Popen(cmd, shell=True)
+    p = subprocess.Popen(cmd, shell=True)
     p.communicate()
     return p.poll()
 
@@ -47,7 +44,7 @@ def link_and_run(link, code):
     Returns:
         Returns 0 if links and runs successfully, otherwise 1.
     """
-    exec_cmd("cmake --build . --target clean", True)
+    exec_cmd("cmake --build . -v --target clean", True)
     arch = ''
     if platform.system() == "Windows":
         arch = '-A x64'
@@ -57,7 +54,7 @@ def link_and_run(link, code):
         cmd = "".join([cmd, " -DLIBEVENT_STATIC_LINK=1"])
     r = exec_cmd(cmd, True)
     if r == 0:
-        r = exec_cmd('cmake --build .', True)
+        r = exec_cmd('cmake --build . -v', True)
         if r == 0:
             r = exec_cmd('ctest', True)
     if r != 0:
@@ -177,7 +174,7 @@ def unexport_dll(dir):
 else:
     prefix = "/usr/local"
 exec_cmd('cmake -DCMAKE_SKIP_INSTALL_RPATH=OFF -DCMAKE_INSTALL_PREFIX="%s" ..' % prefix, True)
-exec_cmd('cmake --build . --target install', True)
+exec_cmd('cmake --build . -v --target install', True)
 config_backup()
 os.environ["CMAKE_PREFIX_PATH"] = os.path.join(prefix, "lib/cmake/libevent")
 export_dll(dllpath)
@@ -189,11 +186,11 @@ def unexport_dll(dir):
 # into a temporary directory. Same as above, remove LibeventConfig.cmake from
 # build directory to avoid confusion when using find_package().
 print("[test-export] test for install tree(in non-system-wide path)")
-exec_cmd("cmake --build . --target uninstall", True)
+exec_cmd("cmake --build . -v --target uninstall", True)
 tempdir = tempfile.TemporaryDirectory()
 cmd = 'cmake -DCMAKE_SKIP_INSTALL_RPATH=OFF -DCMAKE_INSTALL_PREFIX="%s" ..' % tempdir.name
 exec_cmd(cmd, True)
-exec_cmd("cmake --build . --target install", True)
+exec_cmd("cmake --build . -v --target install", True)
 config_backup()
 os.environ["CMAKE_PREFIX_PATH"] = os.path.join(tempdir.name, "lib/cmake/libevent")
 dllpath = os.path.join(tempdir.name, "lib")