diff -up alkimia-7.0.1/CMakeLists.txt.gmp alkimia-7.0.1/CMakeLists.txt
--- alkimia-7.0.1/CMakeLists.txt.gmp 2018-03-15 14:28:26.733594572 -0500
+++ alkimia-7.0.1/CMakeLists.txt 2018-03-20 12:26:06.312835584 -0500
@@ -34,7 +34,9 @@ endif()
# figure out which multi-precision library to use
# MPIR is preferred over GMP
+if(NOT USE_GMP)
find_package(MPIR)
+endif()
if(MPIR_FOUND)
set(MP_INCLUDE_DIR ${MPIR_INCLUDE_DIR})
set(MP_LIBRARIES ${MPIR_LIBRARIES})