Initial thread pool implementation
diff --git a/configure.py b/configure.py
new file mode 100755
index 0000000..72db0c4
--- /dev/null
+++ b/configure.py
@@ -0,0 +1,204 @@
+#!/usr/bin/env python
+
+import os
+import sys
+import glob
+import argparse
+import ninja_syntax
+
+
+class Configuration:
+
+    def __init__(self, options, ninja_build_file=os.path.join(os.path.dirname(os.path.abspath(__file__)), "build.ninja")):
+        self.output = open(ninja_build_file, "w")
+        self.writer = ninja_syntax.Writer(self.output)
+        self.source_dir = None
+        self.build_dir = None
+        self.artifact_dir = None
+        self.prefix_dir = options.prefix
+        self.include_dirs = []
+        self.object_ext = ".bc"
+
+        # Variables
+        self.writer.variable("nacl_sdk_dir", options.nacl_sdk)
+        self._set_pnacl_vars()
+        self.writer.variable("cflags", "-std=gnu11")
+        self.writer.variable("cxxflags", "-std=gnu++11")
+        self.writer.variable("optflags", "-O3")
+
+        # Rules
+        self.writer.rule("cc", "$pnacl_cc -o $out -c $in -MMD -MF $out.d $optflags $cflags $includes",
+            deps="gcc", depfile="$out.d",
+            description="CC[PNaCl] $descpath")
+        self.writer.rule("cxx", "$pnacl_cxx -o $out -c $in -MMD -MF $out.d $optflags $cxxflags $includes",
+            deps="gcc", depfile="$out.d",
+            description="CXX[PNaCl] $descpath")
+        self.writer.rule("ccld", "$pnacl_cc -o $out $in $libs $libdirs $ldflags",
+            description="CCLD[PNaCl] $descpath")
+        self.writer.rule("cxxld", "$pnacl_cxx -o $out $in $libs $libdirs $ldflags",
+            description="CXXLD[PNaCl] $descpath")
+        self.writer.rule("ar", "$pnacl_ar rcs $out $in",
+            description="AR[PNaCl] $descpath")
+        self.writer.rule("finalize", "$pnacl_finalize $finflags -o $out $in",
+            description="FINALIZE[PNaCl] $descpath")
+        self.writer.rule("translate", "$pnacl_translate -arch $arch -o $out $in",
+            description="TRANSLATE[PNaCl] $descpath")
+        self.writer.rule("run", "$pnacl_sel_ldr $in",
+            description="RUN[PNaCl] $descpath", pool="console")
+        self.writer.rule("install", "install -m $mode $in $out",
+            description="INSTALL $out")
+
+
+    def _set_pnacl_vars(self):
+        if sys.platform == "win32":
+            self.writer.variable("pnacl_toolchain_dir", "$nacl_sdk_dir/toolchain/win_pnacl")
+            self.writer.variable("pnacl_cc", "$pnacl_toolchain_dir/bin/pnacl-clang.bat")
+            self.writer.variable("pnacl_cxx", "$pnacl_toolchain_dir/bin/pnacl-clang++.bat")
+            self.writer.variable("pnacl_ar", "$pnacl_toolchain_dir/bin/pnacl-ar.bat")
+            self.writer.variable("pnacl_finalize", "$pnacl_toolchain_dir/bin/pnacl-finalize.bat")
+            self.writer.variable("pnacl_translate", "$pnacl_toolchain_dir/bin/pnacl-translate.bat")
+        elif sys.platform == "linux2" or sys.platform == "darwin":
+            if sys.platform == "linux2":
+                self.writer.variable("pnacl_toolchain_dir", "$nacl_sdk_dir/toolchain/linux_pnacl")
+            else:
+                self.writer.variable("pnacl_toolchain_dir", "$nacl_sdk_dir/toolchain/mac_pnacl")
+            self.writer.variable("pnacl_cc", "$pnacl_toolchain_dir/bin/pnacl-clang")
+            self.writer.variable("pnacl_cxx", "$pnacl_toolchain_dir/bin/pnacl-clang++")
+            self.writer.variable("pnacl_ar", "$pnacl_toolchain_dir/bin/pnacl-ar")
+            self.writer.variable("pnacl_finalize", "$pnacl_toolchain_dir/bin/pnacl-finalize")
+            self.writer.variable("pnacl_translate", "$pnacl_toolchain_dir/bin/pnacl-translate")
+        else:
+            raise OSError("Unsupported platform: " + sys.platform)
+        self.writer.variable("pnacl_sel_ldr", "$nacl_sdk_dir/tools/sel_ldr.py")
+
+
+    def _compile(self, rule, source_file, object_file):
+        if not os.path.isabs(source_file):
+            source_file = os.path.join(self.source_dir, source_file)
+        if object_file is None:
+            object_file = os.path.join(self.build_dir, os.path.relpath(source_file, self.source_dir)) + self.object_ext
+        variables = {
+            "descpath": os.path.relpath(source_file, self.source_dir)
+        }
+        if self.include_dirs:
+            variables["includes"] = " ".join(["-I" + i for i in self.include_dirs])
+        self.writer.build(object_file, rule, source_file, variables=variables)
+        return object_file
+
+
+    def cc(self, source_file, object_file=None):
+        return self._compile("cc", source_file, object_file)
+
+
+    def cxx(self, source_file, object_file=None):
+        return self._compile("cxx", source_file, object_file)
+
+
+    def _link(self, rule, object_files, binary_file, binary_dir, lib_dirs, libs):
+        if not os.path.isabs(binary_file):
+            binary_file = os.path.join(binary_dir, binary_file)
+        variables = {
+            "descpath": os.path.relpath(binary_file, binary_dir)
+        }
+        if lib_dirs:
+            variables["libdirs"] = " ".join(["-L" + l for l in lib_dirs])
+        if libs:
+            variables["libs"] = " ".join(["-l" + l for l in libs])
+        self.writer.build(binary_file, rule, object_files, variables=variables)
+        return binary_file
+
+
+    def ccld(self, object_files, binary_file, lib_dirs=[], libs=[]):
+        return self._link("ccld", object_files, binary_file, self.build_dir, lib_dirs, libs)
+
+
+    def cxxld(self, object_files, binary_file, lib_dirs=[], libs=[]):
+        return self._link("cxxld", object_files, binary_file, self.build_dir, lib_dirs, libs)
+
+
+    def ar(self, object_files, archive_file):
+        if not os.path.isabs(archive_file):
+            archive_file = os.path.join(self.artifact_dir, archive_file)
+        variables = {
+            "descpath": os.path.relpath(archive_file, self.artifact_dir)
+        }
+        self.writer.build(archive_file, "ar", object_files, variables=variables)
+        return archive_file
+
+    def finalize(self, binary_file, executable_file):
+        if not os.path.isabs(binary_file):
+            binary_file = os.path.join(self.build_dir, binary_file)
+        if not os.path.isabs(executable_file):
+            executable_file = os.path.join(self.artifact_dir, executable_file)
+        variables = {
+            "descpath": os.path.relpath(executable_file, self.artifact_dir)
+        }
+        self.writer.build(executable_file, "finalize", binary_file, variables=variables)
+        return executable_file
+
+    def translate(self, portable_file, native_file):
+        if not os.path.isabs(portable_file):
+            portable_file = os.path.join(self.artifact_dir, portable_file)
+        if not os.path.isabs(native_file):
+            native_file = os.path.join(self.artifact_dir, native_file)
+        variables = {
+            "descpath": os.path.relpath(portable_file, self.artifact_dir),
+            "arch": "x86_64"
+        }
+        self.writer.build(native_file, "translate", portable_file, variables=variables)
+        return native_file
+
+    def run(self, executable_file, target):
+        variables = {
+            "descpath": os.path.relpath(executable_file, self.artifact_dir)
+        }
+        self.writer.build(target, "run", executable_file, variables=variables)
+
+    def install(self, source_file, destination_file, mode=0o644):
+        if not os.path.isabs(destination_file):
+            destination_file = os.path.join(self.prefix_dir, destination_file)
+        variables = {
+            "mode": "0%03o" % mode
+        }
+        self.writer.build(destination_file, "install", source_file, variables=variables)
+        return destination_file
+
+
+parser = argparse.ArgumentParser(description="PThreadPool configuration script")
+parser.add_argument("--with-nacl-sdk", dest="nacl_sdk", default=os.getenv("NACL_SDK_ROOT"),
+    help="Native Client (Pepper) SDK to use")
+parser.add_argument("--prefix", dest="prefix", default="/usr/local")
+
+
+def main():
+    options = parser.parse_args()
+
+    config = Configuration(options)
+
+    root_dir = os.path.dirname(os.path.abspath(__file__))
+
+    config.source_dir = os.path.join(root_dir, "src")
+    config.build_dir = os.path.join(root_dir, "build")
+    config.artifact_dir = os.path.join(root_dir, "artifacts")
+    config.include_dirs = [os.path.join("$nacl_sdk_dir", "include"), os.path.join(root_dir, "include"), os.path.join(root_dir, "src")]
+
+    pthreadpool_object = config.cc("pthreadpool.c")
+    pthreadpool_library = config.ar([pthreadpool_object], "libpthreadpool.a")
+
+    config.source_dir = os.path.join(root_dir, "test")
+    config.build_dir = os.path.join(root_dir, "build", "test")
+    pthreadpool_test_object = config.cxx("pthreadpool.cc")
+    pthreadpool_test_binary = config.cxxld([pthreadpool_object, pthreadpool_test_object], "pthreadpool.bc", libs=["gtest"], lib_dirs=[os.path.join("$nacl_sdk_dir", "lib", "pnacl", "Release")])
+    pthreadpool_test_binary = config.finalize(pthreadpool_test_binary, "pthreadpool.pexe")
+    pthreadpool_test_binary = config.translate(pthreadpool_test_binary, "pthreadpool.nexe")
+    config.run(pthreadpool_test_binary, "test")
+
+    config.writer.default([pthreadpool_library, pthreadpool_test_binary])
+
+    config.writer.build("install", "phony", [
+        config.install(os.path.join(root_dir, "include", "pthreadpool.h"), "include/pthreadpool.h"),
+        config.install(os.path.join(pthreadpool_object), "lib/libpthreadpool.a")])
+
+
+if __name__ == "__main__":
+    sys.exit(main())