Merge pull request #10889 from cladmi/pr/objcopy/fallback

makefiles/toolchain: fix command -v multiple commands

makefiles/toolchain/gnu.inc.mk

@@ -13,7 +13,7 @@ export NM         = $(PREFIX)nm
 export LINK       = $(PREFIX)gcc
 export LINKXX     = $(PREFIX)g++
 export SIZE       = $(PREFIX)size
-export OBJCOPY   ?= $(shell command -v $(PREFIX)objcopy gobjcopy objcopy | head -n 1)
+export OBJCOPY   ?= $(shell command -v $(PREFIX)objcopy || command -v gobjcopy || command -v objcopy)
 ifeq ($(OBJCOPY),)
 $(warning objcopy not found. Hex file will not be created.)
 export OBJCOPY    = true

makefiles/toolchain/llvm.inc.mk

@@ -20,7 +20,7 @@ export LINK        = $(PREFIX)gcc
 export LINKXX      = $(PREFIX)g++
 # objcopy does not have a clear substitute in LLVM, use GNU binutils
 #export OBJCOPY     = $(LLVMPREFIX)objcopy
-export OBJCOPY    ?= $(shell command -v $(PREFIX)objcopy gobjcopy objcopy | head -n 1)
+export OBJCOPY    ?= $(shell command -v $(PREFIX)objcopy || command -v gobjcopy || command -v objcopy)
 ifeq ($(OBJCOPY),)
 $(warning objcopy not found. Hex file will not be created.)
 export OBJCOPY     = true