--- Makefile.in.orig	2020-01-18 00:44:56.000000000 +1100
+++ Makefile.in	2020-07-30 21:56:43.692563000 +1000
@@ -598,7 +598,7 @@
 	gen-jacobitab.c gen-psqr.c mini-gmp/README mini-gmp/mini-gmp.c \
 	mini-gmp/mini-gmp.h mini-gmp/mini-mpq.c mini-gmp/mini-mpq.h \
 	mini-gmp/tests/Makefile mini-gmp/tests/run-tests
-pkgconfigdir = $(libdir)/pkgconfig
+pkgconfigdir = $(libdir)data/pkgconfig
 pkgconfig_DATA = gmp.pc $(am__append_1)
 @WANT_CXX_TRUE@GMPXX_HEADERS_OPTION = gmpxx.h