From 5fd8fa08016e2b5ccd4e542abbdac50553013a2f Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Thu, 10 Mar 2022 22:20:13 +0100
Subject: [PATCH] Pass INTERFACE64 to C LAPACK builds if set

---
 cmake/f_check.cmake | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cmake/f_check.cmake b/cmake/f_check.cmake
index e63bd9d4c..d86187ccc 100644
--- a/cmake/f_check.cmake
+++ b/cmake/f_check.cmake
@@ -30,6 +30,9 @@ else()
   endif()
   #  set (NO_LAPACK 1)
   set(C_LAPACK 1)
+  if (INTERFACE64)
+     set (CCOMMON_OPT "${CCOMMON_OPT} -DLAPACK_ILP64")
+  endif ()
   set(TIMER "NONE")
   set (NOFORTRAN 1)
 endif()