Nothing ready? There is functional daemon and wallet, the other stuff is just optional.

Linux is free and available to anyone (if you have Windows, you can easily install Virtual Machine), what else would you need to start?

I must say, the developers even provided working Linux binaries for latest Ubuntu, which is very rare to see.  There is no need to recompile!
Just download and use. Many other cryptonote  "shining" coins  like Monero, Intense, Aeon, Sumo ... struggle with this and recompilation and fixing is needed.
This is positive sign for me.

Correct, I have overlooked one 0, sorry for confusion.

Looks like 0.9 billion was mined in 5 days (out of 5 billion) and difficulty increased a lot. The rest (4.1 billion should be mined during next 5 years).
Maybe we should get used to EURB would be more and more difficult to get (as other coins).

Yes, of course, but then you change meaning of the code and behavior can be unexpected.
Correct fix is to add the comment  /* FALLTHRU */, which is recognized by GCC and Clang.

It can be also compiled on Ubuntu 17.10 with latest GCC 7 with few tweaks. Some test compilation failed, but daemon and wallet compiled and linked OK (and work OK).
Cryptonote sources  (and forks) should be more updated and tested with new versions of GCC and boost.
Here is my diff from trunk:

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c33f90c..151c5f8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -55,7 +55,7 @@ else()
   if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
     set(WARNINGS "${WARNINGS} -Wno-error=mismatched-tags -Wno-error=null-conversion -Wno-overloaded-shift-op-parentheses -Wno-error=shift-count-overflow -Wno-error=tautological-constant-out-of-range-compare -Wno-error=unused-private-field -Wno-error=unneeded-internal-declaration -Wno-error=unused-function")
   else()
-    set(WARNINGS "${WARNINGS} -Wlogical-op -Wno-error=maybe-uninitialized -Wno-error=clobbered -Wno-error=unused-but-set-variable")
+    set(WARNINGS "${WARNINGS} -Wno-logical-op -Wno-error=maybe-uninitialized -Wno-error=clobbered -Wno-error=unused-but-set-variable -Wno-error=terminate")
   endif()
   if(MINGW)
     set(WARNINGS "${WARNINGS} -Wno-error=unused-value")
diff --git a/src/Common/Base58.cpp b/src/Common/Base58.cpp
index 7cf17b4..a9e5f92 100644
--- a/src/Common/Base58.cpp
+++ b/src/Common/Base58.cpp
@@ -84,13 +84,20 @@ namespace Tools
         uint64_t res = 0;
         switch (9 - size)
         {
-        case 1:            res |= *data++;
+        case 1: res |= *data++;
+               /* FALLTHRU */
         case 2: res <<= 8; res |= *data++;
+               /* FALLTHRU */
         case 3: res <<= 8; res |= *data++;
+               /* FALLTHRU */
         case 4: res <<= 8; res |= *data++;
+               /* FALLTHRU */
         case 5: res <<= 8; res |= *data++;
+               /* FALLTHRU */
         case 6: res <<= 8; res |= *data++;
+               /* FALLTHRU */
         case 7: res <<= 8; res |= *data++;
+               /* FALLTHRU */
         case 8: res <<= 8; res |= *data; break;
         default: assert(false);
         }
diff --git a/src/CryptoNoteCore/SwappedMap.h b/src/CryptoNoteCore/SwappedMap.h
index dd32945..b7ee9ec 100644
--- a/src/CryptoNoteCore/SwappedMap.h
+++ b/src/CryptoNoteCore/SwappedMap.h
@@ -7,6 +7,7 @@
 #include 
 #include 
 #include 
+#include 
 #include 
 #include 
 #include 
diff --git a/src/crypto/crypto.cpp b/src/crypto/crypto.cpp
index 45ecd95..4df65b2 100644
--- a/src/crypto/crypto.cpp
+++ b/src/crypto/crypto.cpp
@@ -315,15 +315,21 @@ namespace Crypto {
 #pragma warning(disable: 4200)
 #endif
 
+  struct ec_point_pair {
+     EllipticCurvePoint a, b;
+  };
+
   struct rs_comm {
     Hash h;
-    struct {
+    /*struct {
       EllipticCurvePoint a, b;
     } ab[];
+    */
+    struct ec_point_pair ab[];
   };
 
   static inline size_t rs_comm_size(size_t pubs_count) {
-    return sizeof(rs_comm) + pubs_count * sizeof(rs_comm().ab[0]);
+    return sizeof(rs_comm) + pubs_count * sizeof(/*rs_comm().ab[0]*/ec_point_pair);
   }