Re: compiling glibc with a compiler flag

[Mike Frysinger <vapier at gentoo dot org>]

On Saturday 14 April 2007, Jakub Jelinek wrote:
> On Sat, Apr 14, 2007 at 11:54:40AM +0300, Metuki Sabhe wrote:
> > How can I compile glibc with some additional compiler flags ?
>
> Just tell it to configure, say:
> CC=gcc CXX=g++ CFLAGS="-g -O2 -mtune=generic -DNDEBUG=1" \
>   ../configure --prefix=/usr --enable-add-ons=nptl,libidn \
>   --without-cvs --enable-kernel=2.6.9 --with-headers=/usr/include \
>   --enable-bind-now --with-tls --with-__thread --build x86_64-redhat-linux
> \ --host x86_64-redhat-linux

on that note, is there a reason for CPPFLAGS not being respected even though 
CFLAGS/ASFLAGS are ?  you can half cheat and stick your CPPFLAGS into CFLAGS 
(like -DNDEBUG=1), but that wont help when compiling .S files as 
CPPFLAGS/ASFLAGS are only used in that step ... 
-mike

Attachment: pgp00000.pgp
Description: PGP signature

2007-04-14  Mike Frysinger  <vapier@gentoo.org>

	* Makeconfig (CPPFLAGS): Add $(CPPFLAGS-config).
	* config.make.in (CPPFLAGS-config): Set to @CPPFLAGS@.

--- libc/Makeconfig
+++ libc/Makeconfig
@@ -672,6 +672,7 @@ CPPFLAGS = $($(subdir)-CPPFLAGS) $(+incl
 	   $(foreach lib,$(libof-$(basename $(@F))) \
 		         $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \
 	   $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F)))
+CPPFLAGS += $(CPPFLAGS-config)
 override CFLAGS	= -std=gnu99 \
 		  $(filter-out %frame-pointer,$(+cflags)) $(+gccwarn-c) \
 		  $(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) \
--- libc/config.make.in
+++ libc/config.make.in
@@ -95,6 +95,7 @@ CC = @CC@
 CXX = @CXX@
 BUILD_CC = @BUILD_CC@
 CFLAGS = @CFLAGS@
+CPPFLAGS-config = @CPPFLAGS@
 ASFLAGS-config = @ASFLAGS_config@
 AR = @AR@
 RANLIB = @RANLIB@