klibc - Mar 2011 - (fwd) Bug#618616: arm build failure with latest binutils - usr/klibc/syscalls/_exit.S:29: Error: .size expression does not evaluate to a constant

fwd'ing to klibc malinglist.

----- Forwarded message from Lo?c Minier <lool at dooz.org> -----

Date: Wed, 16 Mar 2011 23:34:51 +0100
From: Lo?c Minier <lool at dooz.org>
To: Debian Bug Tracking System <submit at bugs.debian.org>
Subject: Bug#618616: arm build failure with latest binutils -
	usr/klibc/syscalls/_exit.S:29: Error: .size expression does not
	evaluate to a constant

Package: klibc
Version: 1.5.21-1
Tags: patch
User: ubuntu-devel at lists.ubuntu.com
Usertags: origin-ubuntu natty ubuntu-patch

        Hey

 klibc fails to build with recent binutils as "as" became stricter:
    http://sourceware.org/bugzilla/show_bug.cgi?id=12519
 binutils 20110225 and later would break klibc's builds as follows:
TYPE unsigned int: size 4, sign 0
TYPE unsigned long: size 4, sign 0
TYPE void *: size 4, sign 0
  gcc -Wp,-MD,usr/klibc/syscalls/._exit.o.d  -D__ASSEMBLY__ -nostdinc
-iwithprefix include -I/build/buildd/klibc-1.5.20/usr/include/arch/arm
-Iusr/include/arch/arm -I/build/buildd/klibc-1.5.20/usr/include/bits32
-Iusr/include/bits32 -I/build/buildd/klibc-1.5.20/usr/klibc/../include
-Iusr/klibc/../include -I/build/buildd/klibc-1.5.20/usr/include -Iusr/include
-I/build/buildd/klibc-1.5.20/linux/include -Ilinux/include
-I/build/buildd/klibc-1.5.20/linux/arch/arm/include -Ilinux/arch/arm/include
-D__KLIBC__=1 -D__KLIBC_MINOR__=5 -D_BITSIZE=32 -fno-stack-protector -fwrapv
-fno-exceptions -mabi=aapcs-linux -mno-thumb-interwork -Os -march=armv4
-mtune=strongarm -W -Wall -Wno-sign-compare -Wno-unused-parameter -D__ASSEMBLY__
-nostdinc -iwithprefix include -I/build/buildd/klibc-1.5.20/usr/include/arch/arm
-Iusr/include/arch/arm -I/build/buildd/klibc-1.5.20/usr/include/bits32
-Iusr/include/bits32 -I/build/buildd/klibc-1.5.20/usr/klibc/../include
-Iusr/klibc/../include -I/build/buildd/klibc-1.5.20/usr/include -Iusr/include
-I/build/buildd/klibc-1.5.20/linux/include -Ilinux/include
-I/build/buildd/klibc-1.5.20/linux/arch/arm/include -Ilinux/arch/arm/include
-D__KLIBC__=1 -D__KLIBC_MINOR__=5 -D_BITSIZE=32 -fno-stack-protector -fwrapv
-fno-exceptions -mabi=aapcs-linux -mno-thumb-interwork -Os -march=armv4
-mtune=strongarm -W -Wall -Wno-sign-compare -Wno-unused-parameter -D__ASSEMBLY__
-nostdinc -iwithprefix include -I/build/buildd/klibc-1.5.20/usr/include/arch/arm
-Iusr/include/arch/arm -I/build/buildd/klibc-1.5.20/usr/include/bits32
-Iusr/include/bits32 -I/build/buildd/klibc-1.5.20/usr/klibc/../include
-Iusr/klibc/../include -I/build/buildd/klibc-1.5.20/usr/include -Iusr/include
-I/build/buildd/klibc-1.5.20/linux/include -Ilinux/include
-I/build/buildd/klibc-1.5.20/linux/arch/arm/include -Ilinux/arch/arm/include
-D__KLIBC__=1 -D__KLIBC_MINOR__=5 -D_BITSIZE=32 -fno-stack-protector -fwrapv
-fno-exceptions -mabi=aapcs-linux -mno-thumb-interwork -Os -march=armv4
-mtune=strongarm -W -Wall -Wno-sign-compare -Wno-unused-parameter -c -o
usr/klibc/syscalls/_exit.o usr/klibc/syscalls/_exit.S
usr/klibc/syscalls/_exit.S:1:0: warning: target CPU does not support THUMB
instructions
usr/klibc/syscalls/_exit.S: Assembler messages:
usr/klibc/syscalls/_exit.S:29: Error: .size expression does not evaluate to a
constant
make[5]: *** [usr/klibc/syscalls/_exit.o] Error 1

 sample Ubuntu build log:
   
http://launchpadlibrarian.net/66527153/buildlog_ubuntu-natty-armel.klibc_1.5.20-1ubuntu3_FAILEDTOBUILD.txt.gz

 I've fixed this in Ubuntu with the attached patch, but didn't find
 where to upstream it; since you're a klibc upstream developer and since
 it probably already affects Debian, I figured it was probably best to
 send it here  :-)


 BTW, do you have any idea why the build process forces such odd and
 very old toolchain flags instead of just using the defaults?
 (it forces -march=armv4 -mtune=strongarm)

   Cheers,
-- 
Lo?c Minier

Origin: Ubuntu
Last-Update: 2011-03-16
Description: Fix generation of .size directive for ARM; this wouldn't build
 with recent binutils and was generating broken assembler anyway
Author: Lo?c Minier <loic.minier at linaro.org>

--- klibc-1.5.20.orig/usr/klibc/arch/arm/sysstub.ph
+++ klibc-1.5.20/usr/klibc/arch/arm/sysstub.ph
@@ -52,7 +52,7 @@ sub make_sysstub($$$$$@) {
 
     print  OUT "#endif /* __thumb__*/\n";
 
-    print  OUT "	.size	__syscall${i},.-__syscall${i}\n";
+    print  OUT "	.size	${fname},.-${fname}\n";
 }
 
 1;


----- End forwarded message -----