From patchwork Mon Dec 10 13:53:30 2012
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Subject: don't build multilib libraries during bootstrap,
 and disable some libstdc++ features
Date: Mon, 10 Dec 2012 03:53:30 -0000
From: Matthias Klose <doko@ubuntu.com>
X-Patchwork-Id: 204880
Message-Id: <50C5E95A.9070708@ubuntu.com>
To: gcc-patches@gcc.gnu.org

Am 10.12.2012 13:16, schrieb Matthias Klose:
> During bootstrap some things are built which are not required for the bootstrap:
> 
>  - multilib libraries
>  - libstdc++ debug library, when configured with --enable-libstdcxx-debug
>  - libstdc++ precompiled header files
> 
> The attached patch disables building these during the bootstrap stages. The
> additional dependencies on all-target-libgcc are necessary for multilib'd
> builds, or else the configury bails out finding the wrong libgcc. I can't see a
> way to add these dependencies for the multilib enabled build only.

Here is a reduced version which keeps building the multilibs, maybe better
suited for stage3.

  Matthias


Index: Makefile.tpl
===================================================================
--- Makefile.tpl	(Revision 194357)
+++ Makefile.tpl	(Arbeitskopie)
@@ -1060,7 +1060,9 @@
 	  --target=[+target_alias+] $${srcdiroption} [+ IF prev +]\
 	  --with-build-libsubdir=$(HOST_SUBDIR) [+ ENDIF prev +]\
 	  $(STAGE[+id+]_CONFIGURE_FLAGS)[+ IF extra_configure_flags +] \
-	  [+extra_configure_flags+][+ ENDIF extra_configure_flags +]
+	  [+extra_configure_flags+][+ ENDIF extra_configure_flags +] \
+	  [+ IF bootstrap_configure_flags +][+bootstrap_configure_flags+] \
+	  [+ ENDIF bootstrap_configure_flags +]
 @endif [+prefix+][+module+]-bootstrap
 [+ ENDFOR bootstrap_stage +]
 [+ ENDIF bootstrap +]
Index: Makefile.def
===================================================================
--- Makefile.def	(Revision 194357)
+++ Makefile.def	(Arbeitskopie)
@@ -117,7 +117,8 @@
 target_modules = { module= libstdc++-v3;
 		   bootstrap=true;
 		   lib_path=src/.libs;
-		   raw_cxx=true; };
+		   raw_cxx=true;
+		   bootstrap_configure_flags='--disable-libstdcxx-debug --disable-libstdcxx-pch'; };
 target_modules = { module= libmudflap; lib_path=.libs; };
 target_modules = { module= libsanitizer; lib_path=.libs; };
 target_modules = { module= libssp; lib_path=.libs; };