Added conditional compilation for each OS

lib/sys/sys_linux.q

@@ -0,0 +1,71 @@
+read(fd Int, address Pointer, length Int) -> Int {
+	return syscall(0, fd, address, length)
+}
+
+write(fd Int, address Pointer, length Int) -> Int {
+	return syscall(1, fd, address, length)
+}
+
+open(file Pointer, flags Int, mode Int) -> Int {
+	return syscall(2, file, flags, mode)
+}
+
+close(fd Int) -> Int {
+	return syscall(3, fd)
+}
+
+mmap(address Int, length Int, protection Int, flags Int) -> Pointer {
+	return syscall(9, address, length, protection, flags)
+}
+
+munmap(address Pointer, length Int) -> Int {
+	return syscall(11, address, length)
+}
+
+clone(flags Int, stack Pointer) -> Int {
+	return syscall(56, flags, stack)
+}
+
+exit(status Int) {
+	syscall(60, status)
+}
+
+socket(family Int, type Int, protocol Int) -> Int {
+	return syscall(41, family, type, protocol)
+}
+
+accept(fd Int, address Pointer, length Int) -> Int {
+	return syscall(43, fd, address, length)
+}
+
+bind(fd Int, address Pointer, length Int) -> Int {
+	return syscall(49, fd, address, length)
+}
+
+listen(fd Int, backlog Int) -> Int {
+	return syscall(50, fd, backlog)
+}
+
+getcwd(buffer Pointer, length Int) -> Int {
+	return syscall(79, buffer, length)
+}
+
+chdir(path Pointer) -> Int {
+	return syscall(80, path)
+}
+
+rename(old Pointer, new Pointer) -> Int {
+	return syscall(82, old, new)
+}
+
+mkdir(path Pointer, mode Int) -> Int {
+	return syscall(83, path, mode)
+}
+
+rmdir(path Pointer) -> Int {
+	return syscall(84, path)
+}
+
+unlink(file Pointer) -> Int {
+	return syscall(87, file)
+}