[CentOS] why are warning be treated as errors?

Thu Apr 7 13:45:39 UTC 2011
David Sommerseth <dazo at users.sourceforge.net>

On 07/04/11 15:10, Steve Clark wrote:
> Hello,
> I am trying to compile RHEL-6 kernel srpm on Fedora 14 and run into the
> following problem. From what I read
> -Werror flag causes warnings to be treated as errors - but I don't see that
> flag on in the following. Any ideas?

Most likely because it's considered risky to have warnings.  They might
hide potential issues if not being fixed.  And halting on warnings is a
nice way how to catch them among all the log data a kernel compile can produce.

However, this question probably belongs more to the Fedora Kernel mailing
list [1], as this is a Fedora issue not a CentOS issue.  You know, two
different distributions ;-)

kind regards,

David Sommerseth

[1] <https://www.redhat.com/mailman/listinfo/fedora-kernel-list>

>   gcc -Wp,-MD,arch/x86/kernel/acpi/realmode/.wakemain.o.d  -nostdinc
> -isystem /usr/lib/gcc/i686-redhat-linux/4.5.1/include -nostdinc -isystem
> /usr/lib/gcc/i686-redhat-linux/4.5.1/include -Iinclude 
> -I/home/sclark/rpmbuild/BUILD/kernel-2.6.32/arch/x86/include -include
> include/linux/autoconf.h -D__KERNEL__ -Iinclude
> -I/home/sclark/rpmbuild/BUILD/kernel-2.6.32/arch/x86/include -include
> include/linux/autoconf.h -g -Os -D_SETUP -D_WAKEUP -D__KERNEL__
> -I/home/sclark/rpmbuild/BUILD/kernel-2.6.32/arch/x86/kernel/acpi/realmode/../../../boot
> -Wall -Wstrict-prototypes -march=i386 -mregparm=3 -include
> /home/sclark/rpmbuild/BUILD/kernel-2.6.32/arch/x86/kernel/acpi/realmode/../../../boot/code16gcc.h
> -fno-strict-aliasing -fomit-frame-pointer -ffreestanding
> -fno-toplevel-reorder -fno-stack-protector -mpreferred-stack-boundary=2
> -m32   -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(wakemain)" 
> -D"DEBUG_HASH2=38" -c -o arch/x86/kernel/acpi/realmode/.tmp_wakemain.o
> arch/x86/kernel/acpi/realmode/wakemain.c
> cc1: warnings being treated as errors
> arch/x86/kernel/apic/apic.c: In function 'lapic_suspend':
> arch/x86/kernel/apic/apic.c:2008:3: error: statement with no effect
> arch/x86/kernel/apic/apic.c: In function 'lapic_resume':
> arch/x86/kernel/apic/apic.c:2085:3: error: statement with no effect
> make[5]: *** [arch/x86/kernel/apic/apic.o] Error 1
> make[4]: *** [arch/x86/kernel/apic] Error 2
> Thanks,