[openwrt/openwrt] treewide: add ORIG_PATH variable

[LEDE Commits]

ynezz pushed a commit to openwrt/openwrt.git, branch openwrt-23.05:
https://git.openwrt.org/948dc515dc5afca45a233471535e7c463866c9a9

commit 948dc515dc5afca45a233471535e7c463866c9a9
Author: Michael Pratt <mcpratt at pm.me>
AuthorDate: Thu May 25 02:31:17 2023 -0400

    treewide: add ORIG_PATH variable
    
    Add a variable that stores the original value of $PATH
    in the host system's shell, before Make alters it.
    
    This can be useful for when it is necessary
    to ignore symlinks and programs made by the build system.
    
    Define this new variable before all instances of
    'export PATH:=' or similar.
    
    Signed-off-by: Michael Pratt <mcpratt at pm.me>
    (cherry picked from commit d87a8aa148ddf93b199a759deb088fff73787025)
---
 Makefile                           | 2 ++
 include/scan.mk                    | 1 +
 include/toplevel.mk                | 1 +
 rules.mk                           | 1 +
 target/imagebuilder/files/Makefile | 1 +
 target/sdk/files/Makefile          | 2 ++
 target/toolchain/files/wrapper.sh  | 1 +
 7 files changed, 9 insertions(+)

diff --git a/Makefile b/Makefile
index cff0e1d8d4..c325034bb9 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,8 @@ $(if $(findstring $(space),$(TOPDIR)),$(error ERROR: The path to the OpenWrt dir
 world:
 
 DISTRO_PKG_CONFIG:=$(shell $(TOPDIR)/scripts/command_all.sh pkg-config | grep '/usr' -m 1)
+
+export ORIG_PATH:=$(if $(ORIG_PATH),$(ORIG_PATH),$(PATH))
 export PATH:=$(if $(STAGING_DIR),$(abspath $(STAGING_DIR)/../host/bin),$(TOPDIR)/staging_dir/host/bin):$(PATH)
 
 ifneq ($(OPENWRT_BUILD),1)
diff --git a/include/scan.mk b/include/scan.mk
index 12ef5d1dc7..33a5832ff5 100644
--- a/include/scan.mk
+++ b/include/scan.mk
@@ -11,6 +11,7 @@ TARGET_STAMP:=$(TMP_DIR)/info/.files-$(SCAN_TARGET).stamp
 FILELIST:=$(TMP_DIR)/info/.files-$(SCAN_TARGET)-$(SCAN_COOKIE)
 OVERRIDELIST:=$(TMP_DIR)/info/.overrides-$(SCAN_TARGET)-$(SCAN_COOKIE)
 
+export ORIG_PATH:=$(if $(ORIG_PATH),$(ORIG_PATH),$(PATH))
 export PATH:=$(STAGING_DIR_HOST)/bin:$(PATH)
 
 define feedname
diff --git a/include/toplevel.mk b/include/toplevel.mk
index 2fda7ed223..328214be1b 100644
--- a/include/toplevel.mk
+++ b/include/toplevel.mk
@@ -50,6 +50,7 @@ space:= $(empty) $(empty)
 path:=$(subst :,$(space),$(PATH))
 path:=$(filter-out .%,$(path))
 path:=$(subst $(space),:,$(path))
+export ORIG_PATH:=$(if $(ORIG_PATH),$(ORIG_PATH),$(PATH))
 export PATH:=$(path)
 export STAGING_DIR_HOST:=$(if $(STAGING_DIR),$(abspath $(STAGING_DIR)/../host),$(TOPDIR)/staging_dir/host)
 
diff --git a/rules.mk b/rules.mk
index dcac49667b..58c53705a2 100644
--- a/rules.mk
+++ b/rules.mk
@@ -227,6 +227,7 @@ else
   endif
 endif
 
+export ORIG_PATH:=$(if $(ORIG_PATH),$(ORIG_PATH),$(PATH))
 export PATH:=$(TARGET_PATH)
 export STAGING_DIR STAGING_DIR_HOST STAGING_DIR_HOSTPKG
 export SH_FUNC:=. $(INCLUDE_DIR)/shell.sh;
diff --git a/target/imagebuilder/files/Makefile b/target/imagebuilder/files/Makefile
index 5aeedb74da..5020373792 100644
--- a/target/imagebuilder/files/Makefile
+++ b/target/imagebuilder/files/Makefile
@@ -13,6 +13,7 @@ export TOPDIR LC_ALL LANG
 export OPENWRT_VERBOSE=s
 all: help
 
+export ORIG_PATH:=$(if $(ORIG_PATH),$(ORIG_PATH),$(PATH))
 export PATH:=$(TOPDIR)/staging_dir/host/bin:$(PATH)
 
 ifneq ($(OPENWRT_BUILD),1)
diff --git a/target/sdk/files/Makefile b/target/sdk/files/Makefile
index dca8bbe20e..89c6a109ee 100644
--- a/target/sdk/files/Makefile
+++ b/target/sdk/files/Makefile
@@ -15,6 +15,8 @@ export TOPDIR LC_ALL LANG SDK
 world:
 
 DISTRO_PKG_CONFIG:=$(shell $(TOPDIR)/scripts/command_all.sh pkg-config | grep '/usr' -m 1)
+
+export ORIG_PATH:=$(if $(ORIG_PATH),$(ORIG_PATH),$(PATH))
 export PATH:=$(TOPDIR)/staging_dir/host/bin:$(PATH)
 
 ifneq ($(OPENWRT_BUILD),1)
diff --git a/target/toolchain/files/wrapper.sh b/target/toolchain/files/wrapper.sh
index 4b3f8f911a..09a9cac928 100755
--- a/target/toolchain/files/wrapper.sh
+++ b/target/toolchain/files/wrapper.sh
@@ -43,6 +43,7 @@ TOOLCHAIN_BIN_DIR="$REALNAME_DIR/"
 
 # Set the PATH so that our run-time location is first
 # (get_feature is run from the path, so this has to be set)
+export ORIG_PATH=${ORIG_PATH:-$PATH}
 export PATH="$TOOLCHAIN_BIN_DIR":$PATH
 export GCC_HONOUR_COPTS