From: Roy Marples <roy@marples.name>
Date: Mon, 24 Mar 2014 11:07:19 +0000 (+0000)
Subject: If given --build or --host targets, the expectation is we try and find
X-Git-Tag: v6.4.0~129
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ffab836eabad628324dc86c95e1dcc74705d1aaf;p=thirdparty%2Fdhcpcd.git

If given --build or --host targets, the expectation is we try and find
a compiler for that target.
---

diff --git a/configure b/configure
index 5c84c605..f467dfd2 100755
--- a/configure
+++ b/configure
@@ -16,6 +16,7 @@ OS=
 BUILD=
 HOST=
 TARGET=
+TARGETCC=
 DEBUG=
 FORK=
 STATIC=
@@ -51,6 +52,7 @@ for x do
 	--rundir) RUNDIR=$var;;
 	--mandir) MANDIR=$var;;
 	--with-ccopts|CFLAGS) CFLAGS=$var;;
+	CC) CC=$var;;
 	CPPFLAGS) CPPFLAGS=$var;;
 	--with-hook) HOOKSCRIPTS="$HOOKSCRIPTS${HOOKSCRIPTS:+ }$var";;
 	--with-hooks|HOOKSCRIPTS) HOOKSCRIPTS=$var; HOOKSET=true;;
@@ -188,13 +190,15 @@ CONFIG_MK=config.mk
 if [ -z "$BUILD" ]; then
 	# autoconf target triplet: cpu-vendor-os
 	BUILD=$(uname -m)-unknown-$(uname -s | tr '[:upper:]' '[:lower:]')
+else
+	TARGETCC=$BUILD-
 fi
-if [ -z "$HOST" ]; then
-	[ -z "$TARGET" ] && TARGET=$BUILD
-	HOST=$TARGET
-fi
-if [ -z "$TARGET" ]; then
-	[ -z "$HOST" ] && HOST=$BUILD
+if [ -n "$TARGET" ]; then
+	TARGETCC=$TARGET-
+elif [ -n "$HOST" ]; then
+	TARGET=$HOST
+else
+	HOST=$BUILD
 	TARGET=$HOST
 fi
 
@@ -245,16 +249,33 @@ done
 echo "LIBDIR=		$LIBDIR" >>$CONFIG_MK
 echo "MANDIR=		$MANDIR" >>$CONFIG_MK
 
-: ${CC:=cc}
+# Always obey CC.
+# However, if CC is not specified and we are given GNU style
+# --host or --build targets the expectation is we try and match that
+# to a compiler.
+if [ -n "$CC" ]; then
+	TARGETCC=
+else
+	CC=cc
+	_COMPILERS="cc clang gcc pcc icc"
+fi
+if [ -n "$TARGETCC" ]; then
+	for _CC in $_COMPILERS; do
+		_CC=$(_which "$TARGETCC$_CC")
+		if [ -x "$_CC" ]; then
+			CC=$_CC
+			break
+		fi
+	done
+fi
 if ! type "$CC" >/dev/null 2>&1; then
-	for _CC in clang gcc pcc icc; do
+	for _CC in $_COMPILERS; do
 		_CC=$(_which "$_CC")
 		if [ -x "$_CC" ]; then
 			CC=$_CC
 			break
 		fi
 	done
-	
 fi
 
 echo "Using compiler .. $CC"
@@ -417,7 +438,7 @@ else
 	echo "libc support for clock_getttime is required - aborting" >&2
 	abort=true
 fi
-rm -f _clock_gettime.c _clockgettime
+rm -f _clock_gettime.c _clock_gettime
 $abort && exit 1
 
 if [ -z "$ARC4RANDOM" ]; then