* Added build_cross_tools_gcc4 script which builds gcc 4 and binutils

from the sources. Added respective configure option
  --build-cross-tools-gcc4.
* Fixed running "configure --build-cross-tools" from another directory
  than the source dir. The parameter to the script was missing and thus
  the tools were created in <sources>/generated.
* Removed stdc++ lib header dir ".../debug". One is supposed to include
  <debug/...> to get the debug headers.
* The stdc++ lib header dirs are now listed one per line in the
  generated BuildConfig. This works around the 512 bytes jam line length
  limit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15020 a95241bf-73f2-0310-859d-f6bbb57e9c96

configure

@@ -28,6 +28,11 @@ options:
                               They will be compiled and placed in the output
                               directory under "cross-tools". The HAIKU_* tools
                               variables will be set accordingly.
+  --build-cross-tools-gcc4 <build tools dir>
+                              Like "--build-cross-tools" just that gcc 4 will
+                              be used for cross-compilation. Note, that the
+                              resulting Haiku installation built with gcc 4
+                              will not be binary compatible with BeOS R5.
   --target=TARGET             Select build target platform. [default=${target}]
                               valid targets=r5,bone,dano,haiku
   --include-gpl-addons        Include GPL licensed add-ons.
@@ -89,8 +94,11 @@ standard_gcc_settings()
 			haikuSharedLibSupCxx=`$HAIKU_CC -print-file-name=libsupc++.so`
 			local headers=$gccdir/../../../../include/c++/$haikuGCCVersion
 			haikuCxxHeadersDir=$headers
-			for d in $haikuGCCMachine backward ext debug; do
-				haikuCxxHeadersDir="$haikuCxxHeadersDir $headers/$d"
+			for d in $haikuGCCMachine backward ext; do
+				# Note: We need the line break, otherwise the line might become
+				# too long for jam (512 bytes max).
+				haikuCxxHeadersDir="$haikuCxxHeadersDir
+					$headers/$d"
 			done
 			
 			if [ $haikuStaticLibStdCxx = libstdc++.a ]; then
@@ -168,6 +176,7 @@ include_gpl_addons=0
 target=haiku
 crossToolsPrefix=
 buildCrossTools=
+buildCrossToolsScript="$sourceDir/build/scripts/build_cross_tools"
 
 set_default_value HAIKU_AR			ar
 set_default_value HAIKU_CC			gcc
@@ -191,6 +200,9 @@ while [ $# \> 0 ] ; do
 		--target=*)     target=`echo $1 | cut -d'=' -f2-`; shift 1;;
 		--cross-tools-prefix) assertparam "$1" $#; crossToolsPrefix=$2; shift 2;;
 		--build-cross-tools) assertparam "$1" $#; buildCrossTools=$2; shift 2;;
+		--build-cross-tools-gcc4) assertparam "$1" $#; buildCrossTools=$2;
+						buildCrossToolsScript="${buildCrossToolsScript}_gcc4";
+						shift 2;;
 		--help | -h)	usage; exit 0;;
 		*)				echo Invalid argument: \`$1\'; exit 1;;
 	esac
@@ -236,8 +248,8 @@ mkdir -p $buildOutputDir || exit 1
 
 # build cross tools from sources
 if [ -n "$buildCrossTools" ]; then
-	"$sourceDir/build/scripts/build_cross_tools"  "$sourceDir" \
-		"$buildCrossTools" || exit 1
+	"$buildCrossToolsScript" "$sourceDir" "$buildCrossTools" \
+		$outputDir || exit 1
 	crossToolsPrefix=$outputDir/cross-tools/bin/i586-pc-beos-
 fi