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pgrdsl
Tux's lil' helper
Joined: 29 Aug 2002
Posts: 93
Location: Southampton, UK
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 Posted: Tue Jul 19, 2005 6:10 pm Post subject: |
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| m0p wrote: | I am using gcc 4.1, for external use. I am not compiling anything in portage with it. For example, I am using it to build the nightly sources of Firefox and Thunderbird, but with no good results! Here is the output of the firefox startup script after compiling the latest nightly with 4.1, and a stripped down set of CFLAGS:
| Code: | joe@mopbox ~/Firefox_Source/mozilla/dist/bin $ ./firefox
./run-mozilla.sh: line 131: 2456 Segmentation fault "$prog" ${1+"$@"} |
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Could you post the ldd output for the binary that the script is trying to run?
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luisfelipe
Guru
Joined: 09 Apr 2005
Posts: 377
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| Posted: Tue Jul 19, 2005 7:25 pm Post subject: |
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Is there a way of having different CFLAGS for different packages ??
I mean, when portage is going to compile gcc-4.1, I want it to use a special CFLAGS.
Is there a way, or do I have to keep changing it by hand everytime. |
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robnotts
Guru
Joined: 15 Mar 2004
Posts: 405
Location: Nottingham, UK
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| Posted: Tue Jul 19, 2005 7:34 pm Post subject: |
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I guess you could genertate a script such as...
that contains something like...
| Code: | | CFLAGS="xxxxxx" CXXFLAGS="${CFLAGS}" emerge ${1} ${2} ${3} |
so that you get customised CFLAGS for the gcc41 emerged packages.
Rob.
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m0p
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Joined: 20 Jun 2005
Posts: 205
Location: en_GB
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| Posted: Tue Jul 19, 2005 7:36 pm Post subject: |
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| Wait, I know what broke Firefox. My CFLAGS were set as -O2! afaik, anything above -O1 is broken in 4.1 right? |
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Tiger683
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Joined: 08 Jan 2005
Posts: 1347
Location: Heffner's House
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| Posted: Tue Jul 19, 2005 7:56 pm Post subject: |
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| luisfelipe wrote: | Is there a way of having different CFLAGS for different packages ??
I mean, when portage is going to compile gcc-4.1, I want it to use a special CFLAGS.
Is there a way, or do I have to keep changing it by hand everytime. |
gcc ebuilds filter all custom cflags afaik.
forcing the usage of such is also a __REALLY__BAD__IDEA___
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whitesouls
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Joined: 19 Nov 2004
Posts: 358
Location: In Front of My Laptop
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| Posted: Tue Jul 19, 2005 8:05 pm Post subject: |
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| luisfelipe wrote: | Is there a way of having different CFLAGS for different packages ??
I mean, when portage is going to compile gcc-4.1, I want it to use a special CFLAGS.
Is there a way, or do I have to keep changing it by hand everytime. |
I think this guy is asking about /etc/portage/package.cflags where you can set which package compiled using which cflags
Sorry if i'm wrong.
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whitesouls
Please insert the [SOLVED] tag if your problem is solved in your respective thread. |
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pgrdsl
Tux's lil' helper
Joined: 29 Aug 2002
Posts: 93
Location: Southampton, UK
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| Posted: Fri Jul 22, 2005 5:17 pm Post subject: |
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| Tiger683 wrote: | | gcc ebuilds filter all custom cflags afaik. |
Indeed. Not everything, just some select ones...
I have so far completely failed to stop the ebuild using -O2 and use -O1 regardless of command line CFLAGS, or whatever is set in make.conf (actually, having just read the eclass I now know why).
It is all because of this (in eclasses/toolchain.eclass):
| Code: | gcc_do_filter_flags() {
strip-flags
# In general gcc does not like optimization, and add -O2 where
# it is safe. This is especially true for gcc 3.3 + 3.4
replace-flags -O? -O2
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So, -O1gets replaced by -O2. Which is really helpful...
If I'd been thinking, I might have used -O in the first place  ...
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Martin.Jansa
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Joined: 09 Mar 2004
Posts: 55
Location: Prague
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| Posted: Wed Jul 27, 2005 4:08 pm Post subject: |
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Hi,
I cannot emerge gcc newer then 4.1.0-beta20050625, everytime I try to emerge newer snapshot or cvs from fluidportage I get weird errors about profile like:
| Code: |
/var/tmp/portage/gcc-4.1.0_beta20050723/work/gcc-4.1-20050723/gcc/tree-ssa-operands.c:616: error: corrupted profile info: number of executions for edge 50-51 thought to be -3882
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I have tried to compile with gcc profiles (3.4.4, 4.0.1 and 4.1.0-beta20050625) and without any [CL]FLAGS, but still no success. I know its experimental release but maybe its a bug worth to be reported. |
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ericxx2005
Apprentice
Joined: 05 Apr 2005
Posts: 231
Location: 10 square miles surrounded by reality
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| Posted: Wed Jul 27, 2005 7:25 pm Post subject: |
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| Quote: | | /var/tmp/portage/gcc-4.1.0_beta20050723/work/gcc-4.1-20050723/gcc/tree-ssa-operands.c:616: error: corrupted profile info: number of executions for edge 50-51 thought to be -3882 |
I'm about here right now. I'm going to wait until I get out of work and see if I can get around it somehow. Is the error from gcc itself, or from binutils, glibc, etc.? |
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ericxx2005
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Joined: 05 Apr 2005
Posts: 231
Location: 10 square miles surrounded by reality
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| Posted: Thu Jul 28, 2005 1:43 am Post subject: |
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| I had sucess with -O1 and without -pipe, -O3 didn't work. I'm doing an emerge -e system now (5 of 107). |
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Martin.Jansa
n00b
Joined: 09 Mar 2004
Posts: 55
Location: Prague
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| Posted: Thu Jul 28, 2005 9:57 am Post subject: |
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| ericxx2005 wrote: | | I had sucess with -O1 and without -pipe, -O3 didn't work. I'm doing an emerge -e system now (5 of 107). |
CFLAGS="march=i686 -O1" and still no success ;-(
What USE flags have you used?
I'm using:
| Code: | | sys-devel/gcc-4.1.0_beta20050723 [4.1.0_beta20050625] (-altivec) -bootstrap -build -fortran +gcj +gtk -hardened -ip28 (-multilib) -multislot (-n32) (-n64) +nls -nocxx -objc -static |
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ericxx2005
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Joined: 05 Apr 2005
Posts: 231
Location: 10 square miles surrounded by reality
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| Posted: Thu Jul 28, 2005 4:45 pm Post subject: |
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I had it set with no -O flag, my bad.
My use flags:
| Code: | | -arts -cups -debug -kde -gnome -sdk apic mtrr mmx mmxext sse 3dnow 3dnowext nptl opengl X gtk2 gtk qt imlib2 alsa oss dvd dvdr cdr |
Hope that helps. |
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Martin.Jansa
n00b
Joined: 09 Mar 2004
Posts: 55
Location: Prague
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| Posted: Fri Jul 29, 2005 10:47 am Post subject: |
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| ericxx2005 wrote: | | I had it set with no -O flag, my bad. |
Still not working, maybe the problem is with really used CFLAGS during emerge.
If I have CFLAGS="-O1" or no -O flag in /etc/make.conf, xgcc is still using -O2.
I have looked to /usr/portage/eclass/gcc.eclass, but nothing interesting found. Maybe I should look better today. |
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SimedonMyrrho
n00b
Joined: 15 Jul 2005
Posts: 23
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| Posted: Fri Jul 29, 2005 1:11 pm Post subject: |
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| Quote: | Still not working, maybe the problem is with really used CFLAGS during emerge.
If I have CFLAGS="-O1" or no -O flag in /etc/make.conf, xgcc is still using -O2.
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See above
| Quote: | gcc_do_filter_flags() {
strip-flags
# In general gcc does not like optimization, and add -O 2where
# it is safe. This is especially true for gcc3 . 3+3 .4
replace-flags -O? -O2
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Maybe you should edit toolchain.eclass in your overlay, and add line(s) that say
| Code: | replace flags -O3 -O2
replace flags -Os -O2
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or whatever suits you.
I also had the problem wit gcc-4.1, the latest snapshot also compiled only with -O0, and it would even compile itself later only with -O0. -pipe had no effect.
Using this compiler worked fine so far, i only compiled kmplayer-0.9.0a, and had only minor issues with it. |
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Martin.Jansa
n00b
Joined: 09 Mar 2004
Posts: 55
Location: Prague
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| Posted: Fri Jul 29, 2005 8:15 pm Post subject: |
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| SimedonMyrrho wrote: |
gcc_do_filter_flags() {
strip-flags
# In general gcc does not like optimization, and add -O 2where
# it is safe. This is especially true for gcc3 . 3+3 .4
replace-flags -O? -O2
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That's it. Now it's done and I can sleep more peacefully. 
Thanks to both. |
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Martin.Jansa
n00b
Joined: 09 Mar 2004
Posts: 55
Location: Prague
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| Posted: Tue Aug 02, 2005 8:35 pm Post subject: |
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And now, newer snapshot 4.1.0-beta20050730 emerged sucessfully even with -O2 in CFLAGS and standart toolchain.
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SimedonMyrrho
n00b
Joined: 15 Jul 2005
Posts: 23
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| Posted: Thu Aug 04, 2005 1:30 pm Post subject: |
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| Quote: | | And now, newer snapshot 4.1.0-beta20050730 emerged sucessfully even with -O2 in CFLAGS and standart toolchain. |
This snapshot leaves a good impression with me, too. With it i compiled qt, kdelibs-3.4.2 and several kdebase-meta packages, and do not have issues with them. At first KDE had some problems with window sizing (negative values), but not anymore.
amarok 1.3_beta3 had also a major issue with the size of it's windows, making the playlist unusable. But now it is solved, however. |
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nxsty
Veteran
Joined: 23 Jun 2004
Posts: 1556
Location: .se
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| Posted: Mon Sep 05, 2005 11:53 am Post subject: |
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Has anyone been able to compile the recent snapshots on amd64? For me it always fails with a ice. I can post the error later if anyone wants.
EDIT:
It's profiledbootstrap that makes it crash. Using bootstrap-lean instead works, even with -O2. |
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nxsty
Veteran
Joined: 23 Jun 2004
Posts: 1556
Location: .se
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| Posted: Mon Sep 05, 2005 2:45 pm Post subject: |
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| nxsty wrote: | Has anyone been able to compile the recent snapshots on amd64? For me it always fails with a ice. I can post the error later if anyone wants.
EDIT:
It's profiledbootstrap that makes it crash. Using bootstrap-lean instead works, even with -O2. |
But it wont run.  It always fail with "cannot find -lgcc_s":
configure:2400: gcc -O2 conftest.c >&5
/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.0/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lgcc_s
collect2: ld returned 1 exit status |
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thersites
Tux's lil' helper
Joined: 12 Oct 2004
Posts: 101
Location: South West China
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| Posted: Fri Sep 09, 2005 4:07 am Post subject: |
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I've been using
| Code: | | CFLAGS/CXXFLAGS="-march=i686 -ftree-ccp -ftree-dce -ftree-dominator-opts -ftree-dse -ftree-ter -ftree-lrs -ftree-sra -ftree-copyrename -ftree-fre -ftree-ch -pipe" |
and after a complete successful emerge -e world with gcc-4.1.0-200509006, I decided to try
| Code: | | -march=i686 -O1 -pipe |
emerge -e gcc got as far as gcc, and then ICE!
Also the compile times were a lot slower. Any ideas on which of the extre flags that -O1 turns on might be the guilty party?
| Code: | -fdefer-pop
-fdelayed-branch
-fguess-branch-probabilty
-fcrop-registers
-floop-conversion
-floop-conversion2
-fmerge-constants
-fomit-frame-pointers |
This is on x86 with a Pentium 3-M |
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