add CMake build file and instructions

CMakeLists.txt

@@ -0,0 +1,38 @@
+# 2016, Georg Sauthoff <mail@georg.so>
+
+cmake_minimum_required(VERSION 2.8)
+project(somake C CXX)
+
+add_library(mksh STATIC
+  lib/mksh/dosys.cc lib/mksh/globals.cc lib/mksh/i18n.cc lib/mksh/macro.cc
+  lib/mksh/misc.cc  lib/mksh/mksh.cc    lib/mksh/read.cc
+)
+
+add_library(vroot STATIC
+  lib/vroot/access.cc    lib/vroot/chown.cc    lib/vroot/lock.cc
+  lib/vroot/open.cc      lib/vroot/setenv.cc   lib/vroot/utimes.cc
+  lib/vroot/args.cc      lib/vroot/chroot.cc   lib/vroot/lstat.cc 
+  lib/vroot/readlink.cc  lib/vroot/stat.cc     lib/vroot/vroot.cc 
+  lib/vroot/chdir.cc     lib/vroot/creat.cc    lib/vroot/mkdir.cc
+  lib/vroot/report.cc    lib/vroot/truncate.cc lib/vroot/chmod.cc
+  lib/vroot/execve.cc    lib/vroot/mount.cc    lib/vroot/rmdir.cc
+  lib/vroot/unlink.cc
+)
+
+add_executable(somake
+  bin/ar.cc       bin/depvar.cc  bin/doname.cc       bin/dosys.cc
+  bin/files.cc    bin/globals.cc bin/implicit.cc     bin/macro.cc
+  bin/main.cc     bin/misc.cc    bin/nse_printdep.cc bin/parallel.cc
+  bin/pmake.cc    bin/read.cc    bin/read2.cc        bin/rep.cc
+  bin/state.cc
+)
+
+set_property(TARGET somake mksh vroot PROPERTY INCLUDE_DIRECTORIES
+  ${CMAKE_CURRENT_SOURCE_DIR}/include
+  ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+target_link_libraries(somake
+  mksh vroot pthread
+)
+

README.md

@@ -17,6 +17,23 @@ command and hidden dependencies.
 2016, Georg Sauthofff <mail@georg.so>
 
 
+## Build Instructions
+
+    git clone https://github.com/gsauthof/somake.git
+    mkdir somake-build
+    cd somake-build
+    cmake ../somake -DCMAKE_BUILD_TYPE=Release
+    make
+
+Or to use Ninja instead of GNU Make:
+
+    git clone https://github.com/gsauthof/somake.git
+    mkdir somake-build
+    cd somake-build
+    cmake ../somake -DCMAKE_BUILD_TYPE=Release -G Ninja
+    ninja-build
+
+
 ## Background
 
 Illumos is based on [OpenSolaris][osolaris], the now discontinued