gcc: warnings being treated as errors ,how to close it ?

bitzsk · 05-03-2009, 01:23 AM

when i compile xen source use "sudo make world".
it generate following error:

gcc -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strict-aliasing -m32 -Wdeclaration-after-statement -o symbols symbols.c
cc1: warnings being treated as errors

how do i close it? let warnings not being treated as errors?

my linux dist is Ubuntu 9.04, gcc vertion is 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ,xen vertion is 3.2

Sergei Steshenko · 05-03-2009, 01:49 AM

Quote:

Originally Posted by bitzsk

when i compile xen source use "sudo make world".
it generate following error:

gcc -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strict-aliasing -m32 -Wdeclaration-after-statement -o symbols symbols.c
cc1: warnings being treated as errors

how do i close it? let warnings not being treated as errors?

my linux dist is Ubuntu 9.04, gcc vertion is 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ,xen vertion is 3.2

Remove '-Werror' .

OTOH, better understand why you have warnings and fix the root cause - '-Werror' was most likely put for a reason.

bitzsk · 05-04-2009, 05:55 AM

thank you for your answer!

but how do i remove the -Werror option? as the following message displayed automaticly when i run "make world".

gcc -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strict-aliasing -m32 -Wdeclaration-after-statement -o symbols symbols.c
cc1: warnings being treated as errors

OTOH,when i use other linux edition such as ubuntu 7.10 or 8.04 there is no such error , just ignor warning when compile xen. is there different default setting in gcc between ubuntu 9.04 and ubuntu 8.04?

Sergei Steshenko · 05-04-2009, 06:10 AM

Quote:

Originally Posted by bitzsk

thank you for your answer!

but how do i remove the -Werror option? as the following message displayed automaticly when i run "make world".

gcc -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strict-aliasing -m32 -Wdeclaration-after-statement -o symbols symbols.c
cc1: warnings being treated as errors

OTOH,when i use other linux edition such as ubuntu 7.10 or 8.04 there is no such error , just ignor warning when compile xen. is there different default setting in gcc between ubuntu 9.04 and ubuntu 8.04?

Look into Makefile's and files included into them (if any) and find where -Werror is added to gcc flags.

Typically it's in CCFLAGS and/or CXXFLAGS variables.

jalbrizio · 04-05-2010, 11:30 PM

Quote:

Originally Posted by Sergei Steshenko

Look into Makefile's and files included into them (if any) and find where -Werror is added to gcc flags.

Typically it's in CCFLAGS and/or CXXFLAGS variables.

thanks this helped with my issue I was having with google gears. I did a grep -R Werror ./*
and found the culprit.
you guys rock.