Merge pull request #237 from anthonygego/openbsd

Added support for OpenBSD

Author: sjmackenzie

README.OpenBSD.md

@@ -0,0 +1,47 @@
+# OpenBSD-specific notes
+
+These information apply to OpenBSD. Feel free to contribute and add instructions for other BSD distribution if general information found in the [main Readme](README.md) do not directly apply.
+
+## Global configuration
+
+* Download and install the following tools from the OpenBSD packages directory :
+
+		$ export PKG_PATH=http://ftp.openbsd.org/pub/OpenBSD/$(uname -r)/packages/$(uname -m)/
+    	$ pkg_add -i jre jdk cmake git subversion boost gcc g++ emacs tcl tk
+
+	Make sure, when choice is offered, to install the latest version available of these tools, as required in the [main Readme](README.md). _Please note that default gcc version included in OpenBSD is too old for Mozart to compile._
+* The directory layout suggested in [main Readme](README.md) will be assumed here.
+
+## Compilation of Gtest
+1. Download Gtest in your `<projects>/externals/gtest` directory as suggested in the [main Readme](README.md).
+1. In your terminal, launch Gtest compilation by typing :
+
+		$ cd <projects>/builds/gtest-debug
+		$ cmake -DCMAKE_C_COMPILER="egcc" -DCMAKE_CXX_COMPILER="eg++" -DCMAKE_BUILD_TYPE=Debug ../../externals/gtest
+	    $ make
+
+	Note that the recent gcc you have installed is identified by `egcc` on OpenBSD and no confusion must be made to avoid compilation errors.
+
+## Compilation of LLVM
+1. Download LLVM in your `<projects>/externals/llvm` directory as suggested in the [main Readme](README.md).
+1. In your terminal, launch LLVM compilation by typing :
+
+		$ cd <projects>/builds/llvm-release
+		$ cmake -DCMAKE_C_COMPILER="egcc" -DCMAKE_CXX_COMPILER="eg++" -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="X86" ../../externals/llvm
+	    $ make
+
+   Please note that compilation may fail due to resource limitation. Use `ulimit` to temporarily change these values.
+
+## Compilation of Mozart 2
+1. Download Mozart in your `<projects>/mozart2` directory as suggested in the [main Readme](README.md).
+1. In your terminal, launch Mozart compilation by typing :
+
+		$ cd <projects>/builds/mozart2-release
+		$ cmake -DCMAKE_C_COMPILER="egcc" -DCMAKE_CXX_COMPILER="eg++" -DCMAKE_BUILD_TYPE=Release -DGTEST_SRC_DIR=../../externals/gtest -DGTEST_BUILD_DIR=../gtest-debug -DLLVM_SRC_DIR=../../externals/llvm -DLLVM_BUILD_DIR=../llvm-release -DCMAKE_CXX_FLAGS="-I/usr/local/include -I/usr/local/include/c++/4.8.2 -I/usr/local/include/c++/4.8.2/x86_64-unknown-openbsd5.5 -I/usr/X11R6/include -pthread -O3" -DCMAKE_INSTALL_PREFIX=../../redist ../../mozart2
+		$ make
+
+	__Replace `4.8.2` and `x86_64-unknown-openbsd5.5` by the folders corresponding to your gcc installation.__ You may need to add parameter `-DCMAKE_CXX_LINK_FLAGS="-latomic"` on some versions if linking fails with undefined references.
+
+1. To copy all the binaries in the `redist` folder, type :
+
+		$ make install

README.md

@@ -23,7 +23,7 @@ system.
 # Build instructions
 
 This main Readme is shamefully biased towards Linux. Side-along Readmes are
-available [for Mac OS](README.MacOS.md) and [for Windows](README.Windows.md).
+available for [Mac OS](README.MacOS.md), [Windows](README.Windows.md), and [OpenBSD](README.OpenBSD.md).
 
 ## Requirements
 

boosthost/emulator/CMakeLists.txt

@@ -59,7 +59,7 @@ endif()
 # Here it starts to differ wildly on Windows
 if(NOT WIN32)
   target_link_libraries(ozemulator pthread)
-  if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+  if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "Darwin|OpenBSD")
     target_link_libraries(ozemulator rt)
   endif()