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[XEN PATCH 3/3] Config.mk: evaluate XEN_COMPILE_ARCH and XEN_OS on first use
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Anthony PERARD <anthony.perard@xxxxxxxxxx>
- Date: Wed, 21 Jun 2023 17:19:59 +0100
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- Cc: Anthony PERARD <anthony.perard@xxxxxxxxxx>, Jason Andryuk <jandryuk@xxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, "George Dunlap" <george.dunlap@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, "Julien Grall" <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
- Delivery-date: Wed, 21 Jun 2023 16:20:39 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
With GNU make 4.4, the number of execution of the command present in
these $(shell ) increased greatly. This is probably because as of make
4.4, exported variable are also added to the environment of $(shell )
construct.
So, to avoid having these command been run more than necessery, we
will use a construct to evaluate on first use.
Reported-by: Jason Andryuk <jandryuk@xxxxxxxxx>
Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---
Config.mk | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/Config.mk b/Config.mk
index c529b1ba19cd..5fbdbc4500d2 100644
--- a/Config.mk
+++ b/Config.mk
@@ -19,13 +19,13 @@ or = $(if $(strip $(1)),$(1),$(if $(strip
$(2)),$(2),$(if $(strip $(3)),$(
-include $(XEN_ROOT)/.config
-XEN_COMPILE_ARCH ?= $(shell uname -m | sed -e s/i.86/x86_32/ \
+XEN_COMPILE_ARCH ?= $(eval XEN_COMPILE_ARCH := $(shell uname -m | sed -e
s/i.86/x86_32/ \
-e s/i86pc/x86_32/ -e s/amd64/x86_64/ \
-e s/armv7.*/arm32/ -e s/armv8.*/arm64/ \
- -e s/aarch64/arm64/)
+ -e s/aarch64/arm64/))$(XEN_COMPILE_ARCH)
XEN_TARGET_ARCH ?= $(XEN_COMPILE_ARCH)
-XEN_OS ?= $(shell uname -s)
+XEN_OS ?= $(eval XEN_OS := $(shell uname -s))$(XEN_OS)
CONFIG_$(XEN_OS) := y
--
Anthony PERARD
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