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build: process variable exports from toplevel.mk only once 

These run a lot of expensive shell calls, so redundant calls should be
avoided

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2020-10-06 12:37:51 +02:00
parent b59d5c8f0e
commit ef7c34c1d1
1 changed files with 2 additions and 50 deletions
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52
include/toplevel.mk
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@ -11,62 +11,14 @@ PREP_MK= OPENWRT_BUILD= QUIET=0
export IS_TTY=$(shell tty -s && echo 1 || echo 0)
include $(TOPDIR)/include/verbose.mk
ifeq ($(SDK),1)
include $(TOPDIR)/include/version.mk
else
REVISION:=$(shell $(TOPDIR)/scripts/getver.sh)
SOURCE_DATE_EPOCH:=$(shell $(TOPDIR)/scripts/get_source_date_epoch.sh)
endif
HOSTCC ?= $(CC)
export REVISION
export SOURCE_DATE_EPOCH
export GIT_CONFIG_PARAMETERS='core.autocrlf=false'
export GIT_ASKPASS:=/bin/true
export MAKE_JOBSERVER=$(filter --jobserver%,$(MAKEFLAGS))
export GNU_HOST_NAME:=$(shell $(TOPDIR)/scripts/config.guess)
export HOST_OS:=$(shell uname)
export HOST_ARCH:=$(shell uname -m)
# prevent perforce from messing with the patch utility
unexport P4PORT P4USER P4CONFIG P4CLIENT
# prevent user defaults for quilt from interfering
unexport QUILT_PATCHES QUILT_PATCH_OPTS
unexport C_INCLUDE_PATH CROSS_COMPILE ARCH
# prevent distro default LPATH from interfering
unexport LPATH
# make sure that a predefined CFLAGS variable does not disturb packages
export CFLAGS=
export LDFLAGS=
empty:=
space:= $(empty) $(empty)
path:=$(subst :,$(space),$(PATH))
path:=$(filter-out .%,$(path))
path:=$(subst $(space),:,$(path))
export PATH:=$(path)
unexport TAR_OPTIONS
ifneq ($(shell $(HOSTCC) 2>&1 | grep clang),)
export HOSTCC_REAL?=$(HOSTCC)
export HOSTCC_WRAPPER:=$(TOPDIR)/scripts/clang-gcc-wrapper
else
export HOSTCC_WRAPPER:=$(HOSTCC)
ifeq ($(OPENWRT_VARS),)
include $(TOPDIR)/include/toplevel-vars.mk
endif
ifeq ($(FORCE),)
.config scripts/config/conf scripts/config/mconf: staging_dir/host/.prereq-build
endif
SCAN_COOKIE?=$(shell echo $$$$)
export SCAN_COOKIE
SUBMAKE:=umask 022; $(SUBMAKE)
ULIMIT_FIX=_limit=`ulimit -n`; [ "$$_limit" = "unlimited" -o "$$_limit" -ge 1024 ] || ulimit -n 1024;