BSD Support (FreeBSD, OpenBSD and NetBSD)

.clang-format-ignore

@@ -5,6 +5,7 @@
 subprojects/**
 src/common/eventmeth.cc
 include/pistache/eventmeth.h
+include/pistache/emosandlibevdefs.h
 src/common/pist_timelog.cc
 include/pistache/pist_timelog.h
 src/common/pist_check.cc

Building on BSD - FreeBSD, OpenBSD and NetBSD.txt

@@ -0,0 +1,118 @@
+# SPDX-FileCopyrightText: 2024 Duncan Greatwood
+#
+# SPDX-License-Identifier: Apache-2.0
+
+Making Pistache on *BSD
+=======================
+
+Pistache has been built and tested on FreeBSD, OpenBSD and NetBSD. As
+of July-2024, the versions used for testing were FreeBSD 13.3,
+OpenBSD 7.3 and NetBSD 10.0.
+
+You will need to configure BSD with a working compiler.
+
+We would recommend that you also have python installed, including pip
+(use "python -m ensure-pip" if needed, and add the directory where pip
+is installed to your path). Plus, we recommend installing sudo, if not
+preinstalled.
+
+You will need the following Pistache-dependencies installed:
+  git (and cofigure as needed)
+  llvm
+  meson
+  doxygen
+  googletest
+  openssl
+  rapidjson
+  howard-hinnant-date
+  libevent
+ See BSD-type-specific notes below regarding installing these
+ dependencies.
+
+Convenience shell scripts are provided to make the build. Once
+dependencies are installed, at the terminal, to build do:
+  bldscripts/mesbuild.sh
+To test:
+  bldscripts/mestest.sh
+To install:
+  bldscripts/mesinstall.sh
+
+
+FreeBSD
+=======
+
+Typically, required packages are installed using:
+  sudo pkg install <package-name>
+For instance:
+  sudo pkg install meson
+Do this for each Pistache dependency.
+
+There is no howard-hinnant-date package for FreeBSD, but it is
+straightforward to install manually:
+  git clone https://github.com/HowardHinnant/date.git
+  sudo mkdir /usr/local/include/date
+  sudo cp -p date/include/date/date.h /usr/local/include/date/.
+
+
+OpenBSD
+=======
+
+Typically, required packages are installed using:
+  sudo pkg_add <package-name>
+For instance:
+  sudo pkg_add meson
+Do this for each Pistache dependency.
+
+There is no googletest package for OpenBSD, so please install it
+manually:
+  git clone https://github.com/google/googletest.git
+  cd googletest
+  mkdir build
+  cd build
+  cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release ..
+  make
+  sudo make install
+
+There is no rapidjson package on OpenBSD, so please install it
+manually:
+  git clone https://github.com/Tencent/rapidjson/
+  cd rapidjson/
+  mkdir build
+  cd build
+  cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release ..
+  make
+  sudo make install
+
+
+NetBSD
+======
+Typically, required packages are installed using:
+  sudo pkg_in install <package-name>
+For instance:
+  sudo pkg_in install meson
+Do this for each Pistache dependency.
+
+There is no howard-hinnant-date package for FreeBSD, but it is
+straightforward to install manually:
+  git clone https://github.com/HowardHinnant/date.git
+  sudo mkdir /usr/local/include/date
+  sudo cp -p date/include/date/date.h /usr/local/include/date/.
+
+Regarding NetBSD 9.4. NetBSD 9.4 uses gcc 7.5.0, while Pistache's
+build files require C++17 support, and Pistache's code uses
+std::filesystem. However, gcc 7.5.0 does not work correctly with
+std::filesystem when C++17 is specified. Accordingly, we have tested
+with NetBSD 10.0, not 9.4. Nonetheless, it is possible that Pistache
+could be made to work on NetBSD 9.* with a different compiler or
+different compiler version.
+
+Regarding the test net_test.invalid_address, it may be slow to execute
+(about 2 minutes) in NetBSD. The cause is a long time out for the
+system function getaddrinfo; it doesn't appear to an issue in
+Pistache.
+
+
+How It Works
+============
+Pistache on BSD works very much as it does on macOS, i.e. by using the
+libevent library to provide the core event loop.

bldscripts/mesdebugflibevsetdirvars.sh

@@ -15,16 +15,15 @@ if [ "$(uname)" == "Darwin" ]; then
     exit 1
 fi
 
-MY_ARCH_NM=x86
-if [ "$(uname -m)" == "arm64" ]; then
-    MY_ARCH_NM=a64
-else
-    if [ "$(uname -m)" == "aarch64" ]; then
-        MY_ARCH_NM=a64
-    fi
+if [ "$(uname)" == "OpenBSD" ]; then
+    echo "Error: Don't force libevent on OpenBSD, libevent is on by default"
+    exit 1
 fi
-
-MESON_BUILD_DIR=build${MY_ARCH_NM}.mes.flibev.debug
-MESON_PREFIX_DIR=/usr/local
 
+if [ "$(uname)" == "NetBSD" ]; then
+    echo "Error: Don't force libevent on NetBSD, libevent is on by default"
+    exit 1
+fi
 
+PST_DIR_SUFFIX=".flibev.debug"
+source bldscripts/messetdirvarsfinish.sh

bldscripts/mesdebugsetdirvars.sh

@@ -10,22 +10,6 @@
 # Use by:
 #   source bldscripts/mesdebugsetdirvars.sh
 
-
-MY_ARCH_NM=x86
-if [ "$(uname -m)" == "arm64" ]; then
-    MY_ARCH_NM=a64
-else
-    if [ "$(uname -m)" == "aarch64" ]; then
-        MY_ARCH_NM=a64
-    fi
-fi
-
-
-if [ "$(uname)" == "Darwin" ]; then
-    MESON_BUILD_DIR=build${MY_ARCH_NM}.mes.mac.debug
-    MESON_PREFIX_DIR=/usr/local
-else
-    MESON_BUILD_DIR=build${MY_ARCH_NM}.mes.debug
-    MESON_PREFIX_DIR=/usr/local
-fi
+PST_DIR_SUFFIX=".debug"
+source bldscripts/messetdirvarsfinish.sh
 

bldscripts/mesflibevsetdirvars.sh

@@ -15,16 +15,15 @@ if [ "$(uname)" == "Darwin" ]; then
     exit 1
 fi
 
-MY_ARCH_NM=x86
-if [ "$(uname -m)" == "arm64" ]; then
-    MY_ARCH_NM=a64
-else
-    if [ "$(uname -m)" == "aarch64" ]; then
-        MY_ARCH_NM=a64
-    fi
+if [ "$(uname)" == "OpenBSD" ]; then
+    echo "Error: Don't force libevent on OpenBSD, libevent is on by default"
+    exit 1
 fi
-
-MESON_BUILD_DIR=build${MY_ARCH_NM}.mes.flibev
-MESON_PREFIX_DIR=/usr/local
 
+if [ "$(uname)" == "NetBSD" ]; then
+    echo "Error: Don't force libevent on NetBSD, libevent is on by default"
+    exit 1
+fi
 
+PST_DIR_SUFFIX=".flibev"
+source bldscripts/messetdirvarsfinish.sh

bldscripts/messetdirvars.sh

@@ -10,22 +10,5 @@
 # Use by:
 #   source bldscripts/messetdirvars.sh
 
-
-MY_ARCH_NM=x86
-if [ "$(uname -m)" == "arm64" ]; then
-    MY_ARCH_NM=a64
-else
-    if [ "$(uname -m)" == "aarch64" ]; then
-        MY_ARCH_NM=a64
-    fi
-fi
-
-
-if [ "$(uname)" == "Darwin" ]; then
-    MESON_BUILD_DIR=build${MY_ARCH_NM}.mes.mac
-    MESON_PREFIX_DIR=/usr/local
-else
-    MESON_BUILD_DIR=build${MY_ARCH_NM}.mes
-    MESON_PREFIX_DIR=/usr/local
-fi
-
+PST_DIR_SUFFIX=
+source bldscripts/messetdirvarsfinish.sh

bldscripts/messetdirvarsfinish.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+
+#
+# SPDX-FileCopyrightText: 2024 Duncan Greatwood
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Sets MESON_BUILD_DIR and MESON_PREFIX_DIR
+#
+# NOT to be invoked directly by user. Ivoked by other set scripts once
+# ... has been set
+#
+# Use by:
+#   source bldscripts/messetdirvarsfinish.sh
+
+MY_ARCH_NM=x86
+if [ "$(uname -m)" == "arm64" ]; then
+    MY_ARCH_NM=a64
+else
+    if [ "$(uname -m)" == "aarch64" ]; then
+        MY_ARCH_NM=a64
+    fi
+fi
+
+
+if [ "$(uname)" == "Darwin" ]; then
+    MESON_BUILD_DIR=build${MY_ARCH_NM}.mes.mac${PST_DIR_SUFFIX}
+    MESON_PREFIX_DIR=/usr/local
+else
+    if [[ "$OSTYPE" == "freebsd"* ]]; then
+        MESON_BUILD_DIR=build${MY_ARCH_NM}.mes.fbd${PST_DIR_SUFFIX}
+        MESON_PREFIX_DIR=/usr/local
+    else
+        if [[ "$OSTYPE" == "openbsd"* ]]; then
+	    MESON_BUILD_DIR=build${MY_ARCH_NM}.mes.obd${PST_DIR_SUFFIX}
+            MESON_PREFIX_DIR=/usr/local
+        else
+            if [[ "$OSTYPE" == "netbsd"* ]]; then
+                MESON_BUILD_DIR=build${MY_ARCH_NM}.mes.nbd${PST_DIR_SUFFIX}
+                MESON_PREFIX_DIR=/usr/local
+            else
+                MESON_BUILD_DIR=build${MY_ARCH_NM}.mes${PST_DIR_SUFFIX}
+                MESON_PREFIX_DIR=/usr/local
+            fi
+        fi
+    fi
+fi
+

examples/meson.build

@@ -14,6 +14,12 @@ pistache_example_files = [
 
 threads_dep = dependency('threads')
 
+# In OpenBSD, rapidjson header fles are installed in
+# /usr/local/include, not in /usr/include. Consequently, we need
+# deps_libpistache in our dependencies, not just pistache_dep
+#
+# In particular, for rapidjson/prettywriter.h in rest_description.cc
+
 foreach example_name : pistache_example_files
-	executable('run'+example_name, example_name+'.cc', dependencies: [pistache_dep, threads_dep])
+	executable('run'+example_name, example_name+'.cc', dependencies: [pistache_dep, threads_dep, deps_libpistache])
 endforeach

include/pistache/emosandlibevdefs.h

@@ -0,0 +1,74 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Duncan Greatwood
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+// Defines, or does not define, _USE_LIBEVENT, _USE_LIBEVENT_LIKE_APPLE and
+// _IS_BSD
+// 
+// emosandlibevdefs.h
+
+#ifndef _EMOSANDLIBEVDEFS_H_
+#define _EMOSANDLIBEVDEFS_H_
+
+/* ------------------------------------------------------------------------- */
+
+#ifdef PISTACHE_FORCE_LIBEVENT
+
+// Force libevent even for Linux
+#define _USE_LIBEVENT 1
+
+// _USE_LIBEVENT_LIKE_APPLE not only forces libevent, but even in Linux causes
+// the code to be as similar as possible to the way it is for __APPLE__
+// (e.g. wherever possible, even on Linux it uses solely OS calls that are
+// also available on macOS)
+//
+// Can comment out if not wanted
+#define _USE_LIBEVENT_LIKE_APPLE 1
+
+#endif // ifdef PISTACHE_FORCE_LIBEVENT
+
+#ifdef _USE_LIBEVENT_LIKE_APPLE
+  #ifndef _USE_LIBEVENT
+    #define _USE_LIBEVENT 1
+  #endif
+#endif
+
+#ifdef __APPLE__
+  #ifndef _USE_LIBEVENT
+    #define _USE_LIBEVENT 1
+  #endif
+  #ifndef _USE_LIBEVENT_LIKE_APPLE
+    #define _USE_LIBEVENT_LIKE_APPLE 1
+  #endif
+#elif defined(_WIN32) // Defined for both 32-bit and 64-bit environments
+  #define _USE_LIBEVENT 1
+#elif defined(__unix__) || !defined(__APPLE__) && defined(__MACH__)
+    #include <sys/param.h>
+    #if defined(BSD)
+        // FreeBSD, NetBSD, OpenBSD, DragonFly BSD
+        //
+        // Note - FreeBSD may support epoll via FreeBSD's Linux emulation layer
+        // (see https://wiki.freebsd.org/Linuxulator). We can check for FreeBSD
+        // using "ifdef __FreeBSD__" and also check __FreeBSD_version (see
+        // https://docs.freebsd.org/en/books/porters-handbook/versions/).
+        // However, since FreeBSD's Linuxulator supports Linux binaries, a user
+        // might perhaps just as well run the Linux version of Pistache if
+        // using the Linuxulator. So we use libevent (which will likely use
+        // kqueue on FreeBSD) even in the FreeBSD case.
+        #ifndef _USE_LIBEVENT
+            #define _USE_LIBEVENT 1
+        #endif
+        #ifndef _USE_LIBEVENT_LIKE_APPLE
+            #define _USE_LIBEVENT_LIKE_APPLE 1
+        #endif
+        #ifndef _IS_BSD
+            #define _IS_BSD 1
+        #endif
+    #endif
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+#endif // ifndef _EMOSANDLIBEVDEFS_H_