From edaab94419b857c441ed8025d0a28103e99e7d55 Mon Sep 17 00:00:00 2001
From: Michael Forney <mforney@mforney.org>
Date: Wed, 8 May 2019 21:15:27 -0700
Subject: configure: Add tool prefix when building a cross-compiler

---
 configure | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/configure b/configure
index 5f90898..a270b41 100755
--- a/configure
+++ b/configure
@@ -27,10 +27,6 @@ for arg ; do
 done
 
 : ${CC:=cc}
-: ${DEFAULT_PREPROCESSOR:=cpp}
-: ${DEFAULT_QBE:=qbe}
-: ${DEFAULT_ASSEMBLER:=as}
-: ${DEFAULT_LINKER:=ld}
 
 printf 'checking host system type... '
 test -n "$host" || host=$($CC -dumpmachine 2>/dev/null) || fail "could not determine host"
@@ -40,6 +36,16 @@ printf 'checking target system type...'
 test -n "$target" || target=$host
 printf '%s\n' "$target"
 
+toolprefix=
+if [ "$host" != "$target" ] ; then
+	toolprefix=$target-
+fi
+
+: ${DEFAULT_PREPROCESSOR:=${toolprefix}cpp}
+: ${DEFAULT_QBE:=qbe}
+: ${DEFAULT_ASSEMBLER:=${toolprefix}as}
+: ${DEFAULT_LINKER:=${toolprefix}ld}
+
 case "$target" in
 x86_64*|amd64*) qbetarget=amd64_sysv ;;
 aarch64*)       qbetarget=arm64      ;;
-- 
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