Add default empty files and a CMakeLists.txt to build.

CMakeLists.txt

@@ -0,0 +1,12 @@
+cmake_minimum_required(VERSION 2.7)
+project(libregex)
+
+add_library(regex STATIC src/libregex.c)
+add_executable(libregex src/main.c)
+add_subdirectory(external/libds)
+
+target_include_directories(regex PUBLIC include)
+target_include_directories(libregex PUBLIC include)
+
+target_link_libraries(regex ds)
+target_link_libraries(libregex regex)

include/libregex.h

@@ -0,0 +1,4 @@
+#ifndef LIBREGEX_HEADER
+#define LIBREGEX_HEADER
+
+#endif

src/libregex.c

@@ -0,0 +1 @@
+#include "libregex.h"

src/main.c

@@ -0,0 +1,5 @@
+#include <stdlib.h>
+
+int main(int argc, char** argv){
+  return EXIT_SUCCESS;
+}