Fix #7824: failure to build a cross-compiler on Haiku.

* force creation of a cross-compiler for both gcc2 and gcc4 when
  building on Haiku (by suffixing the build and host machine with
  '_buildhost')

build/scripts/build_cross_tools

@@ -20,6 +20,11 @@ additionalMakeArgs=$*
 	# additional flags for the binutils build. Should there ever be any other
 	# flags than -jN, we need to handle this differently.
 
+if [ `uname -o` = 'Haiku' ]; then
+	# force cross-build if building on Haiku:
+	buildhostMachine=i586-pc-haiku_buildhost
+	buildHostSpec="--build=$buildhostMachine --host=$buildhostMachine"
+fi
 
 if [ ! -d $haikuSourceDir ]; then
 	echo "ERROR: No such directory: \"$haikuSourceDir\"" >&2
@@ -101,8 +106,8 @@ fi
 # build binutils
 cd $binutilsObjDir
 CFLAGS="-O2" CXXFLAGS="-O2" $buildToolsDir/binutils/configure \
-	--prefix=$installDir --target=i586-pc-haiku --disable-nls \
+	--prefix=$installDir $buildHostSpec --target=i586-pc-haiku \
-	--enable-shared=yes --disable-werror || exit 1
+	--disable-nls --enable-shared=yes --disable-werror || exit 1
 make $additionalMakeArgs || exit 1
 make $additionalMakeArgs install || exit 1
 
@@ -146,10 +151,10 @@ case `uname` in
 	;;
 esac
 CFLAGS="-O2 -U_FORTIFY_SOURCE" CXXFLAGS="-O2" $buildToolsDir/gcc/configure \
-	--prefix=$installDir \
+	--prefix=$installDir $buildHostSpec --target=i586-pc-haiku \
-	--target=i586-pc-haiku --disable-nls --enable-shared=yes \
+	--disable-nls --enable-shared=yes --enable-languages=c,c++ \
-	--enable-languages=c,c++ --with-headers=$tmpIncludeDir \
+	--with-headers=$tmpIncludeDir --with-libs=$tmpLibDir \
-	--with-libs=$tmpLibDir || exit 1
+	|| exit 1
 unset CC
 
 # hack the Makefile to avoid trouble with stuff we don't need anyway
@@ -192,4 +197,3 @@ rm -rf $objDir
 
 
 echo "binutils and gcc for cross compilation have been built successfully!"
-

build/scripts/build_cross_tools_gcc4

@@ -50,6 +50,12 @@ arm-*)
 	;;
 esac
 
+if [ `uname -o` = 'Haiku' ]; then
+	# force cross-build if building on Haiku:
+	buildhostMachine=${haikuMachine}_buildhost
+	buildHostSpec="--build=$buildhostMachine --host=$buildhostMachine"
+fi
+
 if [ ! -d $haikuSourceDir ]; then
 	echo "No such directory: \"$haikuSourceDir\"" >&2
 	exit 1
@@ -134,8 +140,9 @@ export LC_ALL=POSIX
 # build binutils
 cd $binutilsObjDir
 CFLAGS="-O2" CXXFLAGS="-O2" $binutilsSourceDir/configure \
-	--prefix=$installDir --target=$haikuMachine --disable-nls \
+	--prefix=$installDir $buildHostSpec --target=$haikuMachine \
-	--disable-shared --disable-werror $binutilsConfigureArgs || exit 1
+	--disable-nls --disable-shared --disable-werror $binutilsConfigureArgs \
+	|| exit 1
 $MAKE $additionalMakeArgs || exit 1
 $MAKE $additionalMakeArgs install || exit 1
 
@@ -191,11 +198,13 @@ copy_headers $haikuSourceDir/headers/posix $tmpIncludeDir/posix
 
 # configure gcc
 cd $gccObjDir
-CFLAGS="-O2" CXXFLAGS="-O2" $gccSourceDir/configure --prefix=$installDir \
+CFLAGS="-O2" CXXFLAGS="-O2" $gccSourceDir/configure \
-	--target=$haikuMachine --disable-nls --disable-shared --with-system-zlib \
+	--prefix=$installDir $buildHostSpec --target=$haikuMachine \
+	--disable-nls --disable-shared --with-system-zlib \
 	--enable-languages=c,c++ --enable-lto --enable-frame-pointer \
 	--with-headers=$tmpIncludeDir --with-libs=$tmpLibDir \
-	$gccConfigureArgs || exit 1
+	$gccConfigureArgs \
+	|| exit 1
 
 # make gcc
 $MAKE $additionalMakeArgs || {