if -fsigned-char is in CFLAGS then when I try to emerge gcc it crashes everytime at the same spot... when encountering xregcomp and xregerror... Reproducible: Always Steps to Reproduce: 1.rm -rf /var/tmp/portage/* 2.emerge gcc 2> gcc.err 3.crash Actual Results: /var/tmp/portage/gcc-3.2.3-r2/work/gcc-3.2.3/libiberty/regex.c:1422: warning: t$/var/tmp/portage/gcc-3.2.3-r2/work/gcc-3.2.3/libiberty/regex.c:1424: warning: t$/var/tmp/portage/gcc-3.2.3-r2/work/gcc-3.2.3/libiberty/regex.c:1425: warning: t$/var/tmp/portage/gcc-3.2.3-r2/work/gcc-3.2.3/libiberty/regex.c:1427: warning: t$/var/tmp/portage/gcc-3.2.3-r2/work/gcc-3.2.3/libiberty/regex.c: In function `xr$/var/tmp/portage/gcc-3.2.3-r2/work/gcc-3.2.3/libiberty/regex.c:8099: warning: s$/var/tmp/portage/gcc-3.2.3-r2/work/gcc-3.2.3/libiberty/regex.c: In function `xr$/var/tmp/portage/gcc-3.2.3-r2/work/gcc-3.2.3/libiberty/regex.c:8234: warning: u$In file included from /var/tmp/portage/gcc-3.2.3-r2/work/gcc-3.2.3/libiberty/pe$/usr/include/unistd.h:983: Internal compiler error in layout_type, at stor-layo$Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://bugs.gentoo.org/> for instructions. make[1]: *** [pexecute.o] Error 1 make[1]: *** Waiting for unfinished jobs.... make: *** [all-libiberty] Error 2 !!! ERROR: sys-devel/gcc-3.2.3-r2 failed. !!! Function src_compile, Line 361, Exitcode 2 !!! (no error message) Expected Results: should compile GNU nano 1.2.1 File: emerge_info.txt Portage 2.0.48-r7 (default-ppc-1.4, gcc-3.2.2, glibc-2.3.1-r2) ================================================================= System uname: 2.4.21-ben2 ppc GENTOO_MIRRORS="ftp://ftp.gtlib.cc.gatech.edu/pub/gentoo http://gentoo.oregonst$CONFIG_PROTECT="/etc /var/qmail/control /usr/kde/2/share/config /usr/kde/3/shar$CONFIG_PROTECT_MASK="/etc/gconf /etc/env.d" PORTDIR="/usr/portage" DISTDIR="/usr/portage/distfiles" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR_OVERLAY="" USE="oss xv jpeg nls gif kde png truetype ppc foomaticdb gnome-libs gtkhtml gdb$COMPILER="gcc3" CHOST="powerpc-unknown-linux-gnu" CFLAGS="-mcpu=750 -O2 -pipe -fsigned-char -mpowerpc-gfxopt" CXXFLAGS="-mcpu=750 -O2 -pipe -fsigned-char -mpowerpc-gfxopt" ACCEPT_KEYWORDS="ppc ~ppc" MAKEOPTS="-j2" AUTOCLEAN="yes" SYNC="rsync://rsync.gentoo.org/gentoo-portage" FEATURES="ccache"
Created attachment 15146 [details] full output of emerge gcc 2> gcc_00.err this is the full output of emerge gcc 2> gcc_00.err
Created attachment 15147 [details] full output of emerge gcc 2> gcc_00.err this is the full output of emerge gcc 2> gcc_00.err
if i do not include -fsigned-char in CFLAGS everything goes fine.... no crash
as indicated by the gcc manpage, usage of -fsigned-char is not recommended. Also, in our portage latest /etc/make.conf -fsigned-char should no longer be listed as recommended CFLAGS for any cpu. for G3 and gcc3 the ideal useflags are: -mcpu=750 -O2 -pipe -mpowerpc-gfxopts should be enabled by the -mcpu setting -O3 should also be relatively stable on G3 machines, so feel free to s/O2/O3 :-) I know we have an application that given a computer, predicts the ideal CFLAGS - but I cannot remember the name. I'll ask Pylon to include a bit about CFLAGS in the ppc document or faq.
I'll look what I can find out about this CFLAGS-generating-tool and furthermore update the Docs accordingly. For the moment I still suggest -O2 instead of -O3. There are some applications that still have problems with it.
pylon, any news on this?
added azarah
Is this still valid with gcc-3.2.3-r3?
No answer. Closing.
