Modify drogon_ctl to show more compilation information

cmake/templates/config.h.in

@@ -5,6 +5,7 @@
 #cmakedefine01 USE_MYSQL
 #cmakedefine01 USE_SQLITE3
 #cmakedefine OpenSSL_FOUND
+#cmakedefine Boost_FOUND
 
 #cmakedefine COMPILATION_FLAGS "@COMPILATION_FLAGS@@DROGON_CXX_STANDARD@"
 #cmakedefine COMPILER_COMMAND "@COMPILER_COMMAND@"

drogon_ctl/version.cc

@@ -15,6 +15,7 @@
 #include "version.h"
 #include <drogon/config.h>
 #include <drogon/version.h>
+#include <trantor/net/Resolver.h>
 #include <iostream>
 
 using namespace drogon_ctl;
@@ -32,6 +33,30 @@ void version::handleCommand(std::vector<std::string> &parameters)
     std::cout << "A utility for drogon" << std::endl;
     std::cout << "Version: " << DROGON_VERSION << std::endl;
     std::cout << "Git commit: " << DROGON_VERSION_SHA1 << std::endl;
-    std::cout << "Compile config: " << COMPILATION_FLAGS << " "
+    std::cout << "Compilation: \n  Compiler: " << COMPILER_COMMAND
+              << "\n  Compiler ID: " << COMPILER_ID
+              << "\n  Compilation flags: " << COMPILATION_FLAGS
               << INCLUDING_DIRS << std::endl;
+    std::cout << "Libraries: \n  postgresql: "
+              << (USE_POSTGRESQL ? "yes" : "no") << "  (batch mode: "
+              << (LIBPQ_SUPPORTS_BATCH_MODE ? "yes)\n" : "no)\n")
+              << "  mariadb: " << (USE_MYSQL ? "yes\n" : "no\n")
+              << "  sqlite3: " << (USE_SQLITE3 ? "yes\n" : "no\n");
+#ifdef OpenSSL_FOUND
+    std::cout << "  openssl: yes\n";
+#else
+    std::cout << "  openssl: no\n";
+#endif
+#ifdef USE_BROTLI
+    std::cout << "  brotli: yes\n";
+#else
+    std::cout << "  brotli: no\n";
+#endif
+#ifdef Boost_FOUND
+    std::cout << "  boost: yes\n";
+#else
+    std::cout << "  boost: no\n";
+#endif
+    std::cout << "  c-ares: "
+              << (trantor::Resolver::isCAresUsed() ? "yes\n" : "no\n");
 }

format.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 #find lib orm_lib examples drogon_ctl -name *.h -o -name *.cc -exec dos2unix {} \;
 find lib orm_lib examples drogon_ctl -name *.h -o -name *.cc|xargs clang-format -i -style=file

test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 drogon_ctl_exec=`pwd`/build/drogon_ctl/drogon_ctl
 echo ${drogon_ctl_exec}