OpenBLAS-0.3.15_workaround-gcc-miscompilation.patch

Workaround optimizer bug in GCC on POWER9.
See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100799

Author: Alexander Grund (TU Dresden)

diff --git a/Makefile.power b/Makefile.power
index 946f5523..96b14dca 100644
--- a/Makefile.power
+++ b/Makefile.power
@@ -35,6 +35,7 @@ endif
 ifneq ($(F_COMPILER), PGI)
 FCOMMON_OPT += -O2 -frecursive -fno-fast-math
 ifeq ($(C_COMPILER), GCC)
+FCOMMON_OPT += -fstack-protector-strong
 ifneq ($(GCCVERSIONGT4), 1)
 $(warning your compiler is too old to fully support POWER9, getting a newer version of gcc is recommended)
 FCOMMON_OPT += -mcpu=power8 -mtune=power8