Date: Fri, 05 Sep 2008 15:12:12 +0200 From: Bartosz Stec <admin@kkip.pl> To: freebsd-stable@freebsd.org Subject: Funny things with cflags and world/kernel building Message-ID: <48C1302C.2040109@kkip.pl>
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As well as i know variables works this way:
# set foo=bar
# set | grep foo
_ set foo=bar
foo bar
# echo $foo
bar
# echo ${foo}
bar
So maybe someone could explain me why following things happens with
variables in make.conf?
My make.conf:
CPUTYPE=athlon64
MAKEOPTS=-j3
# USE CCACHE
.if !defined(NOCCACHE)
CC=/usr/local/libexec/ccache/world-cc
CXX=/usr/local/libexec/ccache/world-c++
.endif
# default build settings for ports collection
.if ${.CURDIR:M*/ports/*}
CFLAGS= -O2 -fno-strict-aliasing -pipe -funroll-loops
-fomit-frame-pointer
CXXFLAGS= -O2 -fno-strict-aliasing -pipe -funroll-loops
.endif
# default build settings for base system
.if ${.CURDIR:M*/usr/src/*} || ${.CURDIR:M*/usr/obj/*}
CFLAGS=-O2 -fno-strict-aliasing -pipe
#CXXFLAGS=-O2 -fno-strict-aliasing -pipe
COPTFLAGS=-O2 -fno-strict-aliasing -pipe
CXXFLAGS=${CFLAGS}
#COPTFLAGS=${CFLAGS}
.endif
# added by use.perl 2008-04-14 10:39:38
PERL_VER=5.8.8
PERL_VERSION=5.8.8
As you see I use ccache and different flags for world and port building,
but what's interesting:
1. when I use these flags:
CFLAGS=-O2 -fno-strict-aliasing -pipe
CXXFLAGS=${CFLAGS}
COPTFLAGS=${CFLAGS}
world building finish without problem, but making kernel give an error:
--------------------------------------------------------------
>>> stage 3.1: making dependencies
--------------------------------------------------------------
cd /usr/obj/usr/src/sys/AMD64SMP7; MAKEOBJDIRPREFIX=/usr/obj
MACHINE_ARCH=amd64 MACHINE=amd64 CPUTYPE=athlon64
GROFF_BIN_PATH=/usr/obj/usr/src/tmp/legacy/usr/bin
GROFF_FONT_PATH=/usr/obj/usr/src/tmp/legacy/usr/share/groff_font
GROFF_TMAC_PATH=/usr/obj/usr/src/tmp/legacy/usr/share/tmac
_SHLIBDIRPREFIX=/usr/obj/usr/src/tmp VERSION="FreeBSD
7.1-PRERELEASE amd64 700112" INSTALL="sh
/usr/src/tools/install.sh"
PATH=/usr/obj/usr/src/tmp/legacy/usr/sbin:/usr/obj/usr/src/tmp/legacy/usr/bin:/usr/obj/usr/src/tmp/legacy/usr/games:/usr/obj/usr/src/tmp/usr/sbin:/usr/obj/usr/src/tmp/usr/bin:/usr/obj/usr/src/tmp/usr/games:/sbin:/bin:/usr/sbin:/usr/bin
NO_CTF=1 make KERNEL=kernel depend -DNO_MODULES_OBJ
machine -> /usr/src/sys/amd64/include
Variable CFLAGS is recursive.
*** Error code 2
Stop in /usr/src.
*** Error code 1
Stop in /usr/src.
2. When I use these flags:
CFLAGS=-O2 -fno-strict-aliasing -pipe
CXXFLAGS=-O2 -fno-strict-aliasing -pipe
COPTFLAGS=-O2 -fno-strict-aliasing -pipe
kernel build finish without problem, but... building world give an error!:
===> gnu/lib/libstdc++ (depend)
ln -sf
/usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/config/cpu/generic/
atomicity_builtins/atomicity.h atomicity.cc
ln -sf
/usr/src/gnu/lib/libstdc++/../../../contrib/gcc/unwind-generic.h
unwind.h
rm -f .depend
(...)
/usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/libsupc++/unwind-cxx.h:41:
20: error: unwind.h: No such file or directory
In file included from
/usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/libs
upc++/vec.cc:37:
/usr/src/gnu/lib/libstdc++/../../../contrib/libstdc++/libsupc++/unwind-cxx.h:41:
20: error: unwind.h: No such file or directory
mkdep: compile failed
*** Error code 1
Stop in /usr/src/gnu/lib/libstdc++.
*** Error code 1
Stop in /usr/src/gnu/lib.
*** Error code 1
3. What's even more funny? When I use flags:
CFLAGS=-O2 -fno-strict-aliasing -pipe
COPTFLAGS=-O2 -fno-strict-aliasing -pipe
CXXFLAGS=${CFLAGS}
I have no errors at all! But shouldn't all those flags be treated by
make command exactly the same way??
It isn't new issue - it's couple of months as I face this problem - on
AMD 64 machine with CPUTYPE=athlon64 and MAKEOPTS=-j3 and olso on i386
machine with CPUTYPE=pentium2 and MAKEOPTS=-j2. Other flags are the
same as in the beginning of this message. Another machine - exactly the
same flags but CPUTYPE=athlon-tbird and MAKEOPTS=-j2 and no problems
compiling world and kernel regardless of flags combination.
Could anyone explain to me sthis trange behaviour ?
p.s. Sorry for my poor english ;)
--
Bartosz Stec - specjalista ds. IT
AUXILIA Spółka z o.o.
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