https://sourceware.org/bugzilla/show_bug.cgi?id=19160
Bug ID: 19160
Summary: Warnings from x86_64-build_apple-darwin15.0.0-gcc when
compiling elf32-arm.c and subsequent problems
Product: binutils
Version: 2.25
Status: NEW
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: rog at rcjd dot net
Target Milestone: ---
I'm trying to build a Mac to Raspberry Pi cross compilation. I'm using HomeBrew
with crosstool-ng (1.21.0). It's pretty much as described in various places
such as http://www.unsigned.fr/blog/?p=6 but with some additional patching to
deal with sunrpc.
Current state is that the build process breaks due to a missing object file
(libc-start.o). The file is missing due to assembler errors when compiling the
source file:
/var/folders/zq/rt1zgfw529zd6zk07hw1_bqm0000gs/T//ccIsmKRb.s: Assembler
messages:
[ALL ] /var/folders/zq/rt1zgfw529zd6zk07hw1_bqm0000gs/T//ccIsmKRb.s:102:
Error: invalid constant (ff) after fixup
[ALL ] /var/folders/zq/rt1zgfw529zd6zk07hw1_bqm0000gs/T//ccIsmKRb.s:184:
Error: invalid constant (af) after fixup
In searching for a possible cause of this, I checked a full log of the build
and discovered warnings coming from the compilation of elf32-arm.c:
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:8812:10:
warning: absolute value function 'abs' given an argument of type
'bfd_signed_vma' (aka 'long') but has parameter of type 'int' which may cause
truncation of value [-Wabsolute-value]
[ALL ] value = abs (relocation);
[ALL ] ^
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:8812:10:
note: use function 'labs' instead
[ALL ] value = abs (relocation);
[ALL ] ^~~
[ALL ] labs
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:8847:10:
warning: absolute value function 'abs' given an argument of type
'bfd_signed_vma' (aka 'long') but has parameter of type 'int' which may cause
truncation of value [-Wabsolute-value]
[ALL ] value = abs (relocation);
[ALL ] ^
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:8847:10:
note: use function 'labs' instead
[ALL ] value = abs (relocation);
[ALL ] ^~~
[ALL ] labs
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:8884:10:
warning: absolute value function 'abs' given an argument of type
'bfd_signed_vma' (aka 'long') but has parameter of type 'int' which may cause
truncation of value [-Wabsolute-value]
[ALL ] value = abs (relocation);
[ALL ] ^
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:8884:10:
note: use function 'labs' instead
[ALL ] value = abs (relocation);
[ALL ] ^~~
[ALL ] labs
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10119:36:
warning: absolute value function 'abs' given an argument of type
'bfd_signed_vma' (aka 'long') but has parameter of type 'int' which may cause
truncation of value [-Wabsolute-value]
[ALL ] g_n = calculate_group_reloc_mask (abs (signed_value), group,
[ALL ] ^
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10119:36:
note: use function 'labs' instead
[ALL ] g_n = calculate_group_reloc_mask (abs (signed_value), group,
[ALL ] ^~~
[ALL ] labs
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10133:30:
warning: absolute value function 'abs' given an argument of type
'bfd_signed_vma' (aka 'long') but has parameter of type 'int' which may cause
truncation of value [-Wabsolute-value]
[ALL ] (long) rel->r_offset, abs (signed_value),
howto->name);
[ALL ] ^
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10133:30:
note: use function 'labs' instead
[ALL ] (long) rel->r_offset, abs (signed_value),
howto->name);
[ALL ] ^~~
[ALL ] labs
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10213:30:
warning: absolute value function 'abs' given an argument of type
'bfd_signed_vma' (aka 'long') but has parameter of type 'int' which may cause
truncation of value [-Wabsolute-value]
[ALL ] calculate_group_reloc_mask (abs (signed_value), group - 1,
&residual);
[ALL ] ^
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10213:30:
note: use function 'labs' instead
[ALL ] calculate_group_reloc_mask (abs (signed_value), group - 1,
&residual);
[ALL ] ^~~
[ALL ] labs
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10221:30:
warning: absolute value function 'abs' given an argument of type
'bfd_signed_vma' (aka 'long') but has parameter of type 'int' which may cause
truncation of value [-Wabsolute-value]
[ALL ] (long) rel->r_offset, abs (signed_value),
howto->name);
[ALL ] ^
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10221:30:
note: use function 'labs' instead
[ALL ] (long) rel->r_offset, abs (signed_value),
howto->name);
[ALL ] ^~~
[ALL ] labs
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10297:30:
warning: absolute value function 'abs' given an argument of type
'bfd_signed_vma' (aka 'long') but has parameter of type 'int' which may cause
truncation of value [-Wabsolute-value]
[ALL ] calculate_group_reloc_mask (abs (signed_value), group - 1,
&residual);
[ALL ] ^
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10297:30:
note: use function 'labs' instead
[ALL ] calculate_group_reloc_mask (abs (signed_value), group - 1,
&residual);
[ALL ] ^~~
[ALL ] labs
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10305:30:
warning: absolute value function 'abs' given an argument of type
'bfd_signed_vma' (aka 'long') but has parameter of type 'int' which may cause
truncation of value [-Wabsolute-value]
[ALL ] (long) rel->r_offset, abs (signed_value),
howto->name);
[ALL ] ^
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10305:30:
note: use function 'labs' instead
[ALL ] (long) rel->r_offset, abs (signed_value),
howto->name);
[ALL ] ^~~
[ALL ] labs
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10381:30:
warning: absolute value function 'abs' given an argument of type
'bfd_signed_vma' (aka 'long') but has parameter of type 'int' which may cause
truncation of value [-Wabsolute-value]
[ALL ] calculate_group_reloc_mask (abs (signed_value), group - 1,
&residual);
[ALL ] ^
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10381:30:
note: use function 'labs' instead
[ALL ] calculate_group_reloc_mask (abs (signed_value), group - 1,
&residual);
[ALL ] ^~~
[ALL ] labs
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10391:30:
warning: absolute value function 'abs' given an argument of type
'bfd_signed_vma' (aka 'long') but has parameter of type 'int' which may cause
truncation of value [-Wabsolute-value]
[ALL ] (long) rel->r_offset, abs (signed_value),
howto->name);
[ALL ] ^
[ALL ]
/Volumes/xtools-build-env/.build/src/binutils-2.25/bfd/elf32-arm.c:10391:30:
note: use function 'labs' instead
[ALL ] (long) rel->r_offset, abs (signed_value),
howto->name);
[ALL ] ^~~
[ALL ] labs
On eyeballing the source code for elf32-arm it looks odd - I'm not saying it is
wrong because I'm unable to check - but it looks odd and with warnings being
generated I'm concerned and a little out of my depth.
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