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s390x: only build kernels supported by gcc with dynamic arch support

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When building with dynamic arch support, only build kernels for
architectures that are supported by the gcc we are building with.

Signed-off-by: Marius Hillenbrand <mhillen@linux.ibm.com>
This commit is contained in:
Marius Hillenbrand
2020-05-11 18:37:04 +02:00
parent 8c338616f9
commit 62cf391cbb
1 changed files with 18 additions and 0 deletions
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18
Makefile.system
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@@ -564,8 +564,26 @@ endif
ifeq ($(ARCH), zarch)
DYNAMIC_CORE = ZARCH_GENERIC
# Z13 is supported since gcc-5.2, gcc-6, and in RHEL 7.3 and newer
GCC_GE_52 := $(subst 0,,$(shell expr `$(CC) -dumpversion` \>= "5.2"))
ifeq ($(wildcard /etc/redhat-release), /etc/redhat-release)
RHEL_WITH_Z13 := $(subst 0,,$(shell source /etc/os-release ; expr $$VERSION_ID \>= "7.3"))
endif
ifeq ($(or $(GCC_GE_52),$(RHEL_WITH_Z13)), 1)
DYNAMIC_CORE += Z13
else
$(info OpenBLAS: Not building Z13 kernels because gcc is older than 5.2 or 6.x)
endif
GCC_MAJOR_GE_7 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` \>= 7)
ifeq ($(GCC_MAJOR_GE_7), 1)
DYNAMIC_CORE += Z14
else
$(info OpenBLAS: Not building Z14 kernels because gcc is older than 7.x)
endif
endif
ifeq ($(ARCH), power)