Define __STDC_FORMAT_MACROS before includine cinttypes for (see #61).

Signed-off-by: Stefan Westerfeld <stefan@space.twc.de>

src/mpegts.cc

@@ -18,7 +18,6 @@
 #include <array>
 #include <regex>
 
-#include <inttypes.h>
 #include <string.h>
 #include "utils.hh"
 #include "mpegts.hh"

src/random.cc

@@ -21,7 +21,6 @@
 #include <regex>
 
 #include <assert.h>
-#include <cinttypes>
 
 using std::string;
 using std::vector;

src/testrandom.cc

@@ -18,8 +18,6 @@
 #include "utils.hh"
 #include "random.hh"
 
-#include <inttypes.h>
-
 using std::vector;
 using std::string;
 

src/utils.hh

@@ -21,6 +21,12 @@
 #include <vector>
 #include <string>
 
+#ifndef __STDC_FORMAT_MACROS
+// some compilers/platforms (i.e. very old macOS) need this for macros like PRId64 (#61)
+#define __STDC_FORMAT_MACROS
+#endif
+#include <cinttypes>
+
 std::vector<int> bit_str_to_vec (const std::string& bits);
 std::string      bit_vec_to_str (const std::vector<int>& bit_vec);