unistr/base
configure.ac:
-gl_LIBUNISTRING_LIBSOURCE([0.9], [unistr/u16-strlen.c])
+gl_LIBUNISTRING_MODULE([0.9], [unistr/u16-strlen])
Makefile.am:
+if LIBUNISTRING_COMPILE_UNISTR_U16_STRLEN
+lib_SOURCES += unistr/u16-strlen.c
+endif
Include:
"unistr.h"