3 files changed, 10 insertions, 38 deletions
diff --git a/Tools/GrownBiomeGenVisualiser/CMakeLists.txt b/Tools/GrownBiomeGenVisualiser/CMakeLists.txt
index 0a8b7930e..4626ecf73 100644
--- a/Tools/GrownBiomeGenVisualiser/CMakeLists.txt
+++ b/Tools/GrownBiomeGenVisualiser/CMakeLists.txt
@@ -1,3 +1,4 @@
+cmake_minimum_required(VERSION 3.0.2)
 project (GrownBiomeGenVisualiser)
 
 # Without this, the MSVC variable isn't defined for MSVC builds ( https://www.cmake.org/pipermail/cmake/2011-November/047130.html )
@@ -89,4 +90,6 @@ add_executable(GrownBiomeGenVisualiser
 	${SHARED_OSS_HDR}
 )
 
+target_link_libraries(GrownBiomeGenVisualiser fmt::fmt)
+
 set_target_properties(GrownBiomeGenVisualiser PROPERTIES FOLDER Tools)
diff --git a/Tools/GrownBiomeGenVisualiser/Globals.h b/Tools/GrownBiomeGenVisualiser/Globals.h
index bc2b6834f..11adc2f53 100644
--- a/Tools/GrownBiomeGenVisualiser/Globals.h
+++ b/Tools/GrownBiomeGenVisualiser/Globals.h
@@ -22,13 +22,6 @@
 	#define ALIGN_8
 	#define ALIGN_16
 
-	#define FORMATSTRING(formatIndex, va_argsIndex)
-
-	// MSVC has its own custom version of zu format
-	#define SIZE_T_FMT "%Iu"
-	#define SIZE_T_FMT_PRECISION(x) "%" #x "Iu"
-	#define SIZE_T_FMT_HEX "%Ix"
-
 	#define NORETURN      __declspec(noreturn)
 
 #elif defined(__GNUC__)
@@ -49,27 +42,6 @@
 	// Some portability macros :)
 	#define stricmp strcasecmp
 
-	#define FORMATSTRING(formatIndex, va_argsIndex) __attribute__((format (printf, formatIndex, va_argsIndex)))
-
-	#if defined(_WIN32)
-		// We're compiling on MinGW, which uses an old MSVCRT library that has no support for size_t printfing.
-		// We need direct size formats:
-		#if defined(_WIN64)
-			#define SIZE_T_FMT "%I64u"
-			#define SIZE_T_FMT_PRECISION(x) "%" #x "I64u"
-			#define SIZE_T_FMT_HEX "%I64x"
-		#else
-			#define SIZE_T_FMT "%u"
-			#define SIZE_T_FMT_PRECISION(x) "%" #x "u"
-			#define SIZE_T_FMT_HEX "%x"
-		#endif
-	#else
-		// We're compiling on Linux, so we can use libc's size_t printf format:
-		#define SIZE_T_FMT "%zu"
-		#define SIZE_T_FMT_PRECISION(x) "%" #x "zu"
-		#define SIZE_T_FMT_HEX "%zx"
-	#endif
-
 	#define NORETURN      __attribute((__noreturn__))
 #else
 
@@ -92,8 +64,6 @@
 	#define ALIGN_16
 	*/
 
-	#define FORMATSTRING(formatIndex, va_argsIndex) __attribute__((format (printf, formatIndex, va_argsIndex)))
-
 #endif
 
 
@@ -213,6 +183,7 @@ typedef unsigned char Byte;
 
 
 // Common headers (without macros):
+#include "fmt/format.h"
 #include "StringUtils.h"
 
 
diff --git a/Tools/GrownBiomeGenVisualiser/GrownBiomeGenVisualiser.cpp b/Tools/GrownBiomeGenVisualiser/GrownBiomeGenVisualiser.cpp
index 0efaf9a59..31418b008 100644
--- a/Tools/GrownBiomeGenVisualiser/GrownBiomeGenVisualiser.cpp
+++ b/Tools/GrownBiomeGenVisualiser/GrownBiomeGenVisualiser.cpp
@@ -10,6 +10,7 @@
 #define PROT_INT_BUFFER_SIZE (130 * 130)
 #include "Generating/ProtIntGen.h"
 
+#include "fmt/printf.h"
 
 
 
@@ -20,7 +21,6 @@ typedef int Color[3];  // Color is an array of 3 ints
 
 
 // Forward declarations, needed for GCC and Clang:
-void log(const char * a_Fmt, ...) FORMATSTRING(1, 2);
 void outputBitmapFile(
 	const AString & a_FileName,
 	unsigned a_ImageSizeX, unsigned a_ImageSizeY,
@@ -155,14 +155,12 @@ biomeColorMap[] =
 
 
 
-void log(const char * a_Fmt, ...)
+template <typename ... Args>
+void log(const char * a_Fmt, const Args & ... a_Args)
 {
-	AString buf;
-	va_list args;
-	va_start(args, a_Fmt);
-	AppendVPrintf(buf, a_Fmt, args);
-	va_end(args);
-	std::cout << buf << std::endl << std::flush;
+	fmt::printf(a_Fmt, a_Args...);
+	putchar('\n');
+	fflush(stdout);
 }