libroot: Fix build of new time files under GCC2.

src/system/libroot/posix/musl/time/__tm_to_secs.c

@@ -14,6 +14,7 @@ long long __tm_to_secs(const struct tm *tm)
 		}
 		year += adj;
 	}
+	{
 	long long t = __year_to_secs(year, &is_leap);
 	t += __month_to_secs(month, is_leap);
 	t += 86400LL * (tm->tm_mday-1);
@@ -21,4 +22,5 @@ long long __tm_to_secs(const struct tm *tm)
 	t += 60LL * tm->tm_min;
 	t += tm->tm_sec;
 	return t;
+	}
 }

src/system/libroot/posix/musl/time/__year_to_secs.c

@@ -10,9 +10,13 @@ long long __year_to_secs(long long year, int *is_leap)
 		return 31536000*(y-70) + 86400*leaps;
 	}
 
+	{
 	int cycles, centuries, leaps, rem;
 
-	if (!is_leap) is_leap = &(int){0};
+	if (!is_leap) {
+		static int isleap = 0;
+		is_leap = &isleap;
+	}
 	cycles = (year-100) / 400;
 	rem = (year-100) % 400;
 	if (rem < 0) {
@@ -44,4 +48,5 @@ long long __year_to_secs(long long year, int *is_leap)
 	leaps += 97*cycles + 24*centuries - *is_leap;
 
 	return (year-100) * 31536000LL + leaps * 86400LL + 946684800 + 86400;
+	}
 }

src/system/libroot/posix/time/Jamfile

@@ -7,6 +7,7 @@ UsePrivateHeaders
 	shared
 	;
 SubDirSysHdrs [ FDirName $(SUBDIR) .. musl include ] ;
+SubDirHdrs [ FDirName $(SUBDIR) .. musl time ] ;
 
 local architectureObject ;
 for architectureObject in [ MultiArchSubDirSetup ] {