Add support for MinGW

parser.c

@@ -24,6 +24,18 @@ int str_cmp(Str a, Str b)
 	return cmp == 0 ? (a.len > b.len) - (b.len > a.len) : cmp;
 }
+
+bool
+time_get(struct timespec *ts)
+{
+#if defined(_WIN32) && defined(__MINGW32__)
+	return clock_gettime(CLOCK_REALTIME, ts) == 0;
+#else
+	return timespec_get(ts, TIME_UTC) == TIME_UTC;
+#endif
+}
+
+
 typedef struct {
 	const u8 *pos;
 	const u8 *end;

parser.h

@@ -10,6 +10,7 @@
 #include <stdbool.h>
 #include <stdalign.h>
 #include <string.h>
+#include <time.h>
 #include "arena.h"
@@ -45,6 +46,8 @@ bool str_eq(Str a, Str b);
 //  - a positive number if the first string is greater than the second
 int str_cmp(Str a, Str b);
+// Get current time and save it into `ts`.
+bool time_get(struct timespec *ts);
 // See https://courses.fit.cvut.cz/NI-RUN/specs/ast.html for details about the
 // AST.