* improved gcc to not build the pre-compiled header (PCH) for libstdc++

by default and introduced a Config option to enable it explicitely
	  Note:
	  Disabling PCH in libstdc++ the gcc package becomes 3 times smaller!


git-svn-id: svn://svn.opensde.net/opensde/package/trunk@20307 10447126-35f2-4685-b0cf-6dd780d3921f

base/gcc/config-550.in

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 # 
 # Filename: package/.../gcc/config-550.in
-# Copyright (C) 2006 The OpenSDE Project
+# Copyright (C) 2006 - 2007 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # Copyright (C) 1998 - 2003 Clifford Wolf
 # 
@@ -87,6 +87,9 @@ if pkgcheck "gcc" X; then
 		fi
 		bool 'Build the F77 compiler' SDECFG_PKG_GCC_F77 1
 		bool 'Build the OBJC compiler' SDECFG_PKG_GCC_OBJC 1
+		comment ' '
+		bool 'Build the pre-compiled header (PCH) for libstdc++' \
+					SDECFG_PKG_GCC_CXX_PCH 0 
 	menu_end
 fi
 

base/gcc/gcc.conf

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 # 
 # Filename: package/.../gcc/gcc.conf
-# Copyright (C) 2006 The OpenSDE Project
+# Copyright (C) 2006 - 2007 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # 
 # More information can be found in the files COPYING and README.
@@ -66,6 +66,10 @@ var_append confopt ' ' '--disable-checking'
 # we build a cross compiler in stage0 and later use known good GCCs, no bstrap
 var_append confopt ' ' '--disable-bootstrap'
 
+# build pre-compiled header (PCH) for libstdc++ (default 0)
+[ "$SDECFG_PKG_GCC_CXX_PCH" = 1 ] || \
+		var_append confopt ' ' "--disable-libstdcxx-pch"
+
 # add the multi-lib config
 if [ "$SDECFG_MULTILIB" = 1 ]; then
 	var_append confopt ' ' "--enable-multilib"