add include dir for AC_CONFIG_MACRO_DIR to work

da331647269ee9d73c4008ae901d107320bdc8d1 added a compatiblity macro for
old versions of pkg-config. However, the file in which that macro
resides was not included. From the autoconf docs: "Note that if you use
aclocal from Automake to generate aclocal.m4, you must also set
ACLOCAL_AMFLAGS = -I dir in your top-level".

Reviewed-by: Emil Velikov <>
Acked-by: Pekka Paalanen <>
1 file changed