Beginnings of cross-platform abstraction
This also includes a libusb_get_pollfds API change
diff --git a/configure.ac b/configure.ac
index 58b4aa2..e8ae187 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,6 +10,20 @@
AM_PROG_CC_C_O
AC_DEFINE([_GNU_SOURCE], [], [Use GNU extensions])
+AC_MSG_CHECKING([operating system])
+case $host in
+*-linux*)
+ AC_DEFINE(OS_LINUX, [], [Linux backend])
+ AC_SUBST(OS_LINUX)
+ AC_MSG_RESULT([Linux])
+ backend="linux"
+ ;;
+*)
+ AC_MSG_ERROR([unsupported operating system])
+esac
+
+AM_CONDITIONAL([OS_LINUX], [test "x$backend" == "xlinux"])
+
# Library versioning
lt_major="0"
lt_revision="0"
