Copy BUILD_ options available to the compiler flags

Makefile.system

@@ -295,6 +295,7 @@ endif
 ifeq ($(C_COMPILER), GCC)
 GCCVERSIONGTEQ4 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` \>= 4)
 GCCVERSIONGT4 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` \> 4)
+GCCVERSIONEQ5 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` = 5)
 GCCVERSIONGT5 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` \> 5)
 GCCVERSIONGTEQ7 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` \>= 7)
 GCCVERSIONGTEQ9 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` \>= 9)
@@ -593,35 +594,33 @@ endif
 ifeq ($(ARCH), zarch)
 DYNAMIC_CORE = ZARCH_GENERIC
 
-# if the compiler accepts -march=arch11 or -march=z13 and can compile a file
-# with z13-specific inline assembly, then we can include support for Z13.
-# note: -march=z13 is equivalent to -march=arch11 yet some compiler releases
-# only support one or the other.
-# note: LLVM version 6.x supported -march=z13 yet could not handle vector
-# registers in inline assembly, so the check for supporting the -march flag is
-# not enough.
-ZARCH_TEST_COMPILE=-c $(TOPDIR)/kernel/zarch/damin_z13.c -I$(TOPDIR) -o /dev/null > /dev/null 2> /dev/null
-ZARCH_CC_SUPPORTS_ARCH11=$(shell $(CC) -march=arch11 $(ZARCH_TEST_COMPILE) && echo 1)
-ZARCH_CC_SUPPORTS_Z13=$(shell $(CC) -march=z13 $(ZARCH_TEST_COMPILE) && echo 1)
-
-ifeq ($(or $(ZARCH_CC_SUPPORTS_ARCH11), $(ZARCH_CC_SUPPORTS_Z13)), 1)
+# Z13 is supported since gcc-5.2, gcc-6, and in RHEL 7.3 and newer
+ifeq ($(GCCVERSIONGT5), 1)
+	ZARCH_SUPPORT_Z13 := 1
+else ifeq ($(GCCVERSIONEQ5), 1)
+ifeq ($(GCCMINORVERSIONGTEQ2), 1)
+	ZARCH_SUPPORT_Z13 := 1
+endif
+endif
+
+ifeq ($(wildcard /etc/redhat-release), /etc/redhat-release)
+ifeq ($(shell source /etc/os-release ; expr $$VERSION_ID \>= "7.3"), 1)
+	ZARCH_SUPPORT_Z13 := 1
+endif
+endif
+
+ifeq ($(ZARCH_SUPPORT_Z13), 1)
 DYNAMIC_CORE += Z13
-CCOMMON_OPT += -DDYN_Z13
 else
-$(info OpenBLAS: Not building Z13 kernels because the compiler $(CC) does not support it)
+$(info OpenBLAS: Not building Z13 kernels because gcc is older than 5.2 or 6.x)
 endif
 
-# as above for z13, check for -march=arch12 and z14 support in the compiler.
-ZARCH_CC_SUPPORTS_ARCH12=$(shell $(CC) -march=arch12 $(ZARCH_TEST_COMPILE) && echo 1)
-ZARCH_CC_SUPPORTS_Z14=$(shell $(CC) -march=z14 $(ZARCH_TEST_COMPILE) && echo 1)
-ifeq ($(or $(ZARCH_CC_SUPPORTS_ARCH12), $(ZARCH_CC_SUPPORTS_Z14)), 1)
+ifeq ($(GCCVERSIONGTEQ7), 1)
 DYNAMIC_CORE += Z14
-CCOMMON_OPT += -DDYN_Z14
 else
-$(info OpenBLAS: Not building Z14 kernels because the compiler $(CC) does not support it)
+$(info OpenBLAS: Not building Z14 kernels because gcc is older than 7.x)
+endif
 endif
-
-endif # ARCH zarch
 
 ifeq ($(ARCH), power)
 DYNAMIC_CORE = POWER6
@@ -1223,6 +1222,18 @@ endif
 ifeq ($(BUILD_HALF), 1)
 CCOMMON_OPT += -DBUILD_HALF
 endif
+ifeq ($(BUILD_SINGLE), 1)
+CCOMMON_OPT += -DBUILD_SINGLE
+endif
+ifeq ($(BUILD_DOUBLE), 1)
+CCOMMON_OPT += -DBUILD_DOUBLE
+endif
+ifeq ($(BUILD_COMPLEX), 1)
+CCOMMON_OPT += -DBUILD_COMPLEX
+endif
+ifeq ($(BUILD_COMPLEX16), 1)
+CCOMMON_OPT += -DBUILD_COMPLEX16
+endif
 
 CCOMMON_OPT += -DVERSION=\"$(VERSION)\"