errno
configure.ac:
-gl_LIBUNISTRING_LIBSOURCE([0.9], [unistdio/u8-vsprintf.c])
+gl_LIBUNISTRING_MODULE([0.9], [unistdio/u8-vsprintf])
Makefile.am:
+if LIBUNISTRING_COMPILE_UNISTDIO_U8_VSPRINTF
+lib_SOURCES += unistdio/u8-vsprintf.c
+endif
Include:
"unistdio.h"