diff --git a/Makefile.inc1 b/Makefile.inc1
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -206,6 +206,15 @@
 .else
 X${BINUTIL}?=	${${BINUTIL}}
 .endif
+.if defined(CROSS_BINUTILS_PREFIX) && \
+    exists(${CROSS_BINUTILS_PREFIX}/${OBJDUMP})
+XOBJDUMP?=	${CROSS_BINUTILS_PREFIX:C,/*$,,}/${OBJDUMP}
+.elif defined(CROSS_BINUTILS_PREFIX) && \
+    exists(${CROSS_BINUTILS_PREFIX}/llvm-objdump)
+XOBJDUMP?=	${CROSS_BINUTILS_PREFIX:C,/*$,,}/llvm-objdump
+.else
+XOBJDUMP?=	${OBJDUMP}
+.endif
 .endfor
 
 # If a full path to an external linker is given, don't build lld.
@@ -828,6 +837,7 @@
 		CPP="${XCPP} ${XCFLAGS}" \
 		AS="${XAS}" AR="${XAR}" ELFCTL="${XELFCTL}" LD="${XLD}" \
 		LLVM_LINK="${XLLVM_LINK}" NM=${XNM} OBJCOPY="${XOBJCOPY}" \
+		OBJDUMP="${XOBJDUMP}" \
 		RANLIB=${XRANLIB} STRINGS=${XSTRINGS} \
 		SIZE="${XSIZE}" STRIPBIN="${XSTRIPBIN}"
 
diff --git a/share/mk/local.sys.dirdeps.mk b/share/mk/local.sys.dirdeps.mk
--- a/share/mk/local.sys.dirdeps.mk
+++ b/share/mk/local.sys.dirdeps.mk
@@ -63,7 +63,7 @@
 .endif
 
 # toolchains can be a pain - especially bootstrappping them
-TOOLCHAIN_VARS=	AS AR CC CLANG_TBLGEN CXX CPP LD NM OBJCOPY RANLIB \
+TOOLCHAIN_VARS=	AS AR CC CLANG_TBLGEN CXX CPP LD NM OBJCOPY OBJDUMP RANLIB \
 		STRINGS SIZE LLVM_TBLGEN
 _toolchain_bin_CLANG_TBLGEN=	/usr/bin/clang-tblgen
 _toolchain_bin_LLVM_TBLGEN=	/usr/bin/llvm-tblgen
diff --git a/share/mk/sys.mk b/share/mk/sys.mk
--- a/share/mk/sys.mk
+++ b/share/mk/sys.mk
@@ -238,6 +238,8 @@
 
 OBJCOPY		?=	objcopy
 
+OBJDUMP		?=	objdump
+
 PC		?=	pc
 PFLAGS		?=