From 6ca898b63b81325559cbd2e925bf245f2a8ac999 Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Sat, 8 Jun 2019 23:17:03 +0200
Subject: [PATCH] Add gfortran workaround for potential ABI violation

for #2154
---
 cmake/fc.cmake | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cmake/fc.cmake b/cmake/fc.cmake
index adec28a91..9d8a5713c 100644
--- a/cmake/fc.cmake
+++ b/cmake/fc.cmake
@@ -44,7 +44,10 @@ endif ()
 
 if (${F_COMPILER} STREQUAL "GFORTRAN")
   set(CCOMMON_OPT "${CCOMMON_OPT} -DF_INTERFACE_GFORT")
+  # ensure reentrancy of lapack codes
   set(FCOMMON_OPT "${FCOMMON_OPT} -Wall -frecursive")
+  # work around ABI violation in passing string arguments from C
+  set(FCOMMON_OPT "$(FCOMMON_OPT) -fno-optimize-sibling-calls")
   #Don't include -lgfortran, when NO_LAPACK=1 or lsbcc
   if (NOT NO_LAPACK)
     set(EXTRALIB "{EXTRALIB} -lgfortran")