Added config.h.in file

cmake generates a config file. It currently just shows the version.
rhosts now prints the version at start

CMakeLists.txt

@@ -2,5 +2,7 @@ cmake_minimum_required(VERSION 3.10)
 project(rhosts VERSION 0.0.0 LANGUAGES C)
 message("  C: '${CMAKE_C_COMPILER}'")
 include_directories(${PROJECT_SOURCE_DIR})
-add_executable(rhosts src/rhosts.c src/rhosts.h src/download.h src/download.c)
+add_executable(rhosts src/rhosts.c src/download.c)
 target_link_libraries(rhosts curl)
+target_include_directories(rhosts PUBLIC "${PROJECT_BINARY_DIR}")
+configure_file(src/rhostsConfig.h.in config.h)

src/rhosts.c

@@ -27,6 +27,7 @@ int main(int argc, char *argv[]){
         struct entry *entries;
         int rc =0;
 
+        printf("version: %s\n",rhosts_VERSION);
 
         rc = parse_config(&entries);
         if (rc != 0){

src/rhosts.h

@@ -21,6 +21,8 @@
 #ifndef RHOSTS_HEADER
 #define RHOSTS_HEADER
 
+#include "config.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

src/rhostsConfig.h.in

@@ -0,0 +1,2 @@
+// the configured options and settings for Tutorial
+#define rhosts_VERSION "@rhosts_VERSION@"