The following changes were made:

* Moved .so files to /lib so they'd be available without /usr

Makefile

@@ -13,7 +13,7 @@ ARCH = x86_64
 URL = http://www.mpfr.org/
 DESC = The MPFR library is a C library for multiple-precision floating-point \
 computations with correct rounding.
-SNAPVER = 2
+SNAPVER = 3
 
 ARCHIVE := $(PWD)/SRC/$(shell ls SRC|egrep '(bz2|gz|tar|xz)$$'|tail -1)
 TYPE := $(shell file -ib $(ARCHIVE)|cut -d';' -f1|tr -d '\n')
@@ -46,6 +46,7 @@ $(SRCDIR)/config.log: $(SRCDIR)/configure
 	@cd $(SRCDIR); \
 	./configure \
 		--prefix=/usr \
+		--libdir=/lib \
 		--disable-static \
 		-enable-thread-safe \
 		--build=x86_64-snap-linux-gnu \