build: Add initial Autotools files.

configure.ac

@@ -0,0 +1,36 @@
+AC_PREREQ([2.69])
+AC_INIT([vkd3d], 0.0.0)
+
+AC_CONFIG_AUX_DIR([bin])
+AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_LIBOBJ_DIR([portable])
+AC_CONFIG_HEADERS(include/config.h)
+
+dnl Check for progs
+AM_PROG_AR
+AC_PROG_CC
+AM_PROG_CC_C_O
+AC_PROG_SED
+AC_PROG_MKDIR_P
+
+AM_INIT_AUTOMAKE([1.11 foreign silent-rules subdir-objects -Wall -Werror])
+AM_MAINTAINER_MODE([enable])
+
+LT_PREREQ([2.4.2])
+LT_INIT
+
+dnl Check compiler specific flags
+AC_SUBST(VKD3D_CLFAGS, "")
+if test "x${GCC}" = "xyes"
+then
+    VKD3D_CFLAGS="-Wall -pipe"
+
+    VKD3D_CHECK_CFLAGS([-std=c99])
+    VKD3D_CHECK_CFLAGS([-Wdeclaration-after-statement])
+    VKD3D_CHECK_CFLAGS([-Wmissing-prototypes])
+    VKD3D_CHECK_CFLAGS([-Wunused-but-set-parameter])
+    VKD3D_CHECK_CFLAGS([-Wvla])
+fi
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT