1) Moved tprintf and related functions to their own file in common/libc/printf/tprintf.c.

This file is included by both libc and hostcompat.

2) Changed printf -> tprintf in all testbin programs

userland/lib/hostcompat/Makefile

@@ -22,6 +22,11 @@ TOP=../../..
 LIB=hostcompat
 SRCS=err.c ntohll.c time.c hostcompat.c
 
+# printf
+COMMON=$(TOP)/common/libc
+SRCS+=\
+	$(COMMON)/printf/tprintf.c
+
 HOST_CFLAGS+=$(COMPAT_CFLAGS)
 
 MKDIRS=$(INSTALLTOP)/hostinclude

userland/lib/hostcompat/hostcompat.h

@@ -35,6 +35,13 @@ void hostcompat_init(int argc, char **argv);
 
 time_t __time(time_t *secs, unsigned long *nsecs);
 
+/* Automated testing extensions. */
+
+int tprintf(const char *fmt, ...);
+int nprintf(const char *fmt, ...);
+int printsf(const char *fmt, ...);
+
+
 #ifdef DECLARE_NTOHLL
 uint64_t ntohll(uint64_t);
 #define htonll(x) (ntohll(x))