binutils-gdb/bfd
Alan Modra 499766a6d7 Re: The problem with warning in elf_object_p
Commit 5aa0f10c42 added a per_xvec_warn array to provide support for
warnings from elf_object_p (and a later patch for warnings from
pe_bfd_object_p) to be cached and then only printed if the target
matches.  It was quite limited in the style of message supported, only
one message could be printed, and didn't really meet the stated aim of
only warning when a target matches:  There are many other errors and
warnings that can be emitted by functions called from elf_object_p.

So this patch extends the error handler functions to support printing
to a string buffer, extends per_xvec_warn to support multiple errors/
warnings, and hooks this all into bfd_check_format_matches.  If
bfd_check_format_matches succeeds then any errors/warnings are printed
for the matching target.  If bfd_check_format_matches fails either due
to no match or to multiple matches and only one target vector produced
errors, then those errors are printed.

	* bfd.c (MAX_ARGS): Define, use throughout.
	(print_func): New typedef.
	(_bfd_doprnt): Add new print param.  Replace calls to fprintf
	with print.
	(PRINT_TYPE): Similarly.
	(error_handler_fprintf): Renamed from error_handler_internal.
	Use _bfd_get_error_program_name.  Add fprintf arg.  Move code
	setting up args..
	(_bfd_doprnt_scan): ..to here.  Add ap param.
	(struct buf_stream): New.
	(err_sprintf): New function.
	(error_handler_bfd): New static variable.
	(error_handler_sprintf): New function.
	(_bfd_set_error_handler_caching): New function.
	(_bfd_get_error_program_name): New function.
	* elfcode.h (elf_swap_shdr_in): Use _bfd_error_handler in
	warning messages.
	(elf_object_p): Likewise.
	* format.c (print_warnmsg): New function.
	(clear_warnmsg): Rewrite.
	(null_error_handler): New function.
	(bfd_check_format_matches): Ignore warnings from recursive calls
	checking first element of an archive.  Use caching error handler
	otherwise.  Print warnings on successful match, or when only one
	target has emitted warnings/errors.
	* peicode.h (pe_bfd_object_p): Use _bfd_error_handler in
	warning messages.
	* targets.c (per_xvec_warn): Change type of array elements.
	(struct per_xvec_message): New.
	(_bfd_per_xvec_warn): Rewrite.
	* Makefile.am (LIBBFD_H_FILES): Add bfd.c.
	* Makefile.in: Regenerate.
	* bfd-in2.h: Regenerate.
	* libbfd.h: Regenerate.
2022-12-17 18:44:42 +10:30
..
doc
hosts
po regen SRC-POTFILES.in 2022-11-30 18:41:40 +10:30
.gitignore bfd: Add support for LoongArch64 EFI (efi-*-loongarch64). 2022-08-10 09:26:25 +08:00
acinclude.m4
aclocal.m4 binutils, gdb: support zstd compressed debug sections 2022-09-26 19:50:13 -07:00
aix5ppc-core.c
aix386-core.c
aout32.c
aout64.c
aout-cris.c
aout-ns32k.c
aout-target.h bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
aoutx.h PR22509 - Null pointer dereference on coff_slurp_reloc_table 2022-11-23 22:38:48 +10:30
arc-got.h
arc-plt.def
arc-plt.h
archive64.c
archive.c Don't use BFD_VMA_FMT in binutils 2022-08-04 12:22:39 +09:30
archures.c aarch64-pe support for LD, GAS and BFD 2022-10-19 10:57:12 +02:00
bfd-in2.h Re: The problem with warning in elf_object_p 2022-12-17 18:44:42 +10:30
bfd-in.h Compression tidy and fixes 2022-12-07 13:15:29 +10:30
bfd.c Re: The problem with warning in elf_object_p 2022-12-17 18:44:42 +10:30
bfd.m4
bfdio.c bfd: Define ___lc_codepage_func prototype for older MinGW-w64 2022-08-16 18:04:21 +01:00
bfdwin.c
binary.c bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
cache.c Fix a conflict between the linker's need to rename some PE format input libraries and the BFD library's file caching mechanism. 2022-08-03 13:31:57 +01:00
cf-i386lynx.c
ChangeLog Fix a dereference of NULL when scanning the symbol hashes array in the ARM linker. 2022-12-06 11:24:12 +00:00
ChangeLog-0001
ChangeLog-0203
ChangeLog-2004
ChangeLog-2005
ChangeLog-2006
ChangeLog-2007
ChangeLog-2008
ChangeLog-2009
ChangeLog-2010
ChangeLog-2011
ChangeLog-2012
ChangeLog-2013
ChangeLog-2014
ChangeLog-2015
ChangeLog-2016
ChangeLog-2017
ChangeLog-2018
ChangeLog-2019
ChangeLog-2020
ChangeLog-9193
ChangeLog-9495
ChangeLog-9697
ChangeLog-9899
cisco-core.c
coff64-rs6000.c bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
coff-aarch64.c aarch64-pe support for LD, GAS and BFD 2022-10-19 10:57:12 +02:00
coff-alpha.c
coff-arm.c
coff-arm.h
coff-bfd.c
coff-bfd.h
coff-go32.c
coff-i386.c
coff-ia64.c
coff-loongarch64.c loongarch64_pei_vec garbage in objcopy'd relocs 2022-08-19 10:30:45 +09:30
coff-mcore.c
coff-mips.c
coff-rs6000.c bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
coff-sh.c asan: buffer overflow in sh_reloc 2022-12-14 21:45:04 +10:30
coff-stgo32.c go32 sanity check 2022-11-18 11:31:17 +10:30
coff-tic4x.c PR22509 - Null pointer dereference on coff_slurp_reloc_table 2022-11-23 22:38:48 +10:30
coff-tic30.c PR22509 - Null pointer dereference on coff_slurp_reloc_table 2022-11-23 22:38:48 +10:30
coff-tic54x.c PR22509 - Null pointer dereference on coff_slurp_reloc_table 2022-11-23 22:38:48 +10:30
coff-x86_64.c
coff-z8k.c PR22509 - Null pointer dereference on coff_slurp_reloc_table 2022-11-23 22:38:48 +10:30
coff-z80.c PR22509 - Null pointer dereference on coff_slurp_reloc_table 2022-11-23 22:38:48 +10:30
coffcode.h PR29482 - strip: heap-buffer-overflow 2022-08-13 15:32:47 +09:30
coffgen.c coff make_a_section_from_file tidy 2022-12-07 15:47:24 +10:30
cofflink.c PR29807, SIGSEGV when linking fuzzed PE object 2022-11-22 08:18:49 +10:30
coffswap.h
compress.c bfd_compress_section_contents access to elf_section_data 2022-12-07 13:52:28 +10:30
config.bfd Obsolete beos 2022-10-20 09:45:42 +10:30
config.in binutils, gdb: support zstd compressed debug sections 2022-09-26 19:50:13 -07:00
configure xtensa: allow dynamic configuration 2022-11-28 18:16:12 -08:00
configure.ac xtensa: allow dynamic configuration 2022-11-28 18:16:12 -08:00
configure.com Get rid of BFD_VMA_FMT 2022-08-06 08:08:32 +09:30
configure.host
COPYING
corefile.c
cpu-aarch64.c Fix ARM and AArch64 assembler tests to work in a multi-arch environment. 2022-11-21 16:44:02 +00:00
cpu-aarch64.h
cpu-alpha.c
cpu-amdgcn.c
cpu-arc.c
cpu-arm.c Fix ARM and AArch64 assembler tests to work in a multi-arch environment. 2022-11-21 16:44:02 +00:00
cpu-arm.h
cpu-avr.c
cpu-bfin.c
cpu-bpf.c
cpu-cr16.c
cpu-cris.c
cpu-crx.c
cpu-csky.c
cpu-d10v.c
cpu-d30v.c
cpu-dlx.c
cpu-epiphany.c
cpu-fr30.c
cpu-frv.c
cpu-ft32.c
cpu-h8300.c
cpu-h8300.h
cpu-hppa.c
cpu-i386.c
cpu-ia64-opc.c
cpu-ia64.c
cpu-iamcu.c
cpu-ip2k.c
cpu-iq2000.c
cpu-lm32.c
cpu-loongarch.c
cpu-m9s12x.c
cpu-m9s12xg.c
cpu-m32c.c
cpu-m32r.c
cpu-m68hc11.c
cpu-m68hc12.c
cpu-m68k.c
cpu-m68k.h
cpu-m10200.c
cpu-m10300.c
cpu-mcore.c
cpu-mep.c
cpu-metag.c
cpu-microblaze.c
cpu-mips.c
cpu-mmix.c
cpu-moxie.c
cpu-msp430.c
cpu-mt.c
cpu-nds32.c
cpu-nfp.c
cpu-nios2.c
cpu-ns32k.c
cpu-or1k.c
cpu-pdp11.c
cpu-pj.c
cpu-powerpc.c
cpu-pru.c
cpu-riscv.c
cpu-riscv.h
cpu-rl78.c
cpu-rs6000.c
cpu-rx.c
cpu-s12z.c
cpu-s390.c
cpu-score.c
cpu-sh.c
cpu-sparc.c
cpu-spu.c
cpu-tic4x.c
cpu-tic6x.c
cpu-tic30.c
cpu-tic54x.c
cpu-tilegx.c
cpu-tilepro.c
cpu-v850_rh850.c
cpu-v850.c
cpu-vax.c
cpu-visium.c
cpu-wasm32.c
cpu-xgate.c
cpu-xstormy16.c
cpu-xtensa.c
cpu-z8k.c
cpu-z80.c
dep-in.sed
development.sh
dwarf1.c
dwarf2.c PR28834, PR26946 sanity checking section size 2022-11-11 18:05:36 +10:30
ecoff-bfd.h
ecoff.c PR22509 - Null pointer dereference on coff_slurp_reloc_table 2022-11-23 22:38:48 +10:30
ecofflink.c
ecoffswap.h
elf32-am33lin.c
elf32-arc.c
elf32-arm.c Fix a dereference of NULL when scanning the symbol hashes array in the ARM linker. 2022-12-06 11:24:12 +00:00
elf32-arm.h
elf32-avr.c PR11290, avr-ld "out of range error" is confusing 2022-08-25 17:20:01 +09:30
elf32-avr.h
elf32-bfin.c
elf32-bfin.h
elf32-cr16.c
elf32-cr16.h
elf32-cris.c
elf32-crx.c
elf32-csky.c
elf32-csky.h
elf32-d10v.c
elf32-d30v.c
elf32-dlx.c
elf32-dlx.h
elf32-epiphany.c
elf32-fr30.c
elf32-frv.c
elf32-ft32.c
elf32-gen.c
elf32-h8300.c
elf32-hppa.c
elf32-hppa.h
elf32-i386.c x86: Ignore protected visibility in shared libraries on Solaris 2022-08-25 09:10:45 -07:00
elf32-ip2k.c
elf32-iq2000.c
elf32-lm32.c bfd, binutils, gas: Remove/mark unused variables 2022-09-15 10:46:02 +00:00
elf32-m32c.c
elf32-m32r.c
elf32-m68hc1x.c
elf32-m68hc1x.h
elf32-m68hc11.c
elf32-m68hc12.c
elf32-m68k.c
elf32-m68k.h
elf32-mcore.c
elf32-mep.c
elf32-metag.c
elf32-metag.h
elf32-microblaze.c
elf32-mips.c asan: mips_hi16_list segfault in bfd_get_section_limit_octets 2022-12-13 11:31:43 +10:30
elf32-moxie.c
elf32-msp430.c
elf32-mt.c
elf32-nds32.c bfd, binutils, gas: Remove/mark unused variables 2022-09-15 10:46:02 +00:00
elf32-nds32.h
elf32-nios2.c
elf32-nios2.h
elf32-or1k.c
elf32-pj.c
elf32-ppc.c PR29540, R_PPC64_NONE in .rela.dyn when linking Linux vdso 2022-09-14 10:19:56 +09:30
elf32-ppc.h
elf32-pru.c pru: bfd: Correct default to no execstack 2022-11-14 17:42:22 +02:00
elf32-rl78.c
elf32-rx.c Don't use BFD_VMA_FMT in binutils 2022-08-04 12:22:39 +09:30
elf32-rx.h
elf32-s12z.c
elf32-s390.c
elf32-score7.c
elf32-score.c
elf32-score.h
elf32-sh-relocs.h
elf32-sh.c
elf32-sparc.c
elf32-spu.c asan: NULL dereference in spu_elf_object_p 2022-08-13 14:11:27 +09:30
elf32-spu.h
elf32-tic6x.c
elf32-tic6x.h
elf32-tilegx.c
elf32-tilegx.h
elf32-tilepro.c
elf32-tilepro.h
elf32-v850.c
elf32-v850.h
elf32-vax.c
elf32-visium.c
elf32-wasm32.c
elf32-xgate.c
elf32-xstormy16.c
elf32-xtensa.c xtensa: allow dynamic configuration 2022-11-28 18:16:12 -08:00
elf32-z80.c
elf32.c
elf64-alpha.c
elf64-amdgcn.c
elf64-bpf.c
elf64-gen.c
elf64-hppa.c
elf64-hppa.h
elf64-ia64-vms.c asan: ppc64_elf_get_synthetic_symtab heap buffer overflow 2022-08-05 20:48:29 +09:30
elf64-mips.c asan: mips_hi16_list segfault in bfd_get_section_limit_octets 2022-12-13 11:31:43 +10:30
elf64-mmix.c
elf64-nfp.c
elf64-ppc.c PR29540, R_PPC64_NONE in .rela.dyn when linking Linux vdso 2022-09-14 10:19:56 +09:30
elf64-ppc.h
elf64-s390.c IBM zSystems: Issue error for *DBL relocs on misaligned symbols 2022-10-19 09:03:17 +02:00
elf64-sparc.c objcopy renaming section with explicit flags 2022-11-14 11:36:46 +10:30
elf64-tilegx.c
elf64-tilegx.h
elf64-x86-64.c libsframe asan: avoid generating misaligned loads 2022-12-15 13:12:01 -08:00
elf64.c
elf-attrs.c
elf-bfd.h bfd: linker: merge .sframe sections 2022-11-15 15:49:47 -08:00
elf-eh-frame.c
elf-hppa.h
elf-ifunc.c
elf-linker-x86.h ld, gold: remove support for -z bndplt (MPX prefix) 2022-12-14 08:48:13 +01:00
elf-linux-core.h
elf-m10200.c
elf-m10300.c
elf-nacl.c
elf-nacl.h
elf-properties.c
elf-s390-common.c
elf-s390.h
elf-sframe.c bfd: linker: merge .sframe sections 2022-11-15 15:49:47 -08:00
elf-strtab.c
elf-vxworks.c
elf-vxworks.h
elf.c _bfd_elf_slurp_secondary_reloc_section sanity check 2022-12-07 14:21:09 +10:30
elfcode.h Re: The problem with warning in elf_object_p 2022-12-17 18:44:42 +10:30
elfcore.h Revert "Revert "Fix fbsd core matching"" 2022-06-16 10:20:49 +09:30
elflink.c Get rid of SEC_ELF_COMPRESS 2022-12-06 15:08:31 +10:30
elfn32-mips.c asan: mips_hi16_list segfault in bfd_get_section_limit_octets 2022-12-13 11:31:43 +10:30
elfnn-aarch64.c ld: Always call elf_backend_output_arch_local_syms 2022-11-17 08:13:37 -08:00
elfnn-ia64.c
elfnn-loongarch.c LoongArch: Fix dynamic reloc not generated bug in some cases. 2022-12-06 08:48:57 +08:00
elfnn-riscv.c RISC-V: Allow merging 'H' extension 2022-11-28 02:35:43 +00:00
elfxx-aarch64.c
elfxx-aarch64.h
elfxx-ia64.c
elfxx-ia64.h
elfxx-loongarch.c bfd: Delete R_LARCH_NONE from dyn info of LoongArch. 2022-07-25 09:59:08 +08:00
elfxx-loongarch.h bfd: Add supported for LoongArch new relocations. 2022-07-25 09:59:08 +08:00
elfxx-mips.c asan: mips_hi16_list segfault in bfd_get_section_limit_octets 2022-12-13 11:31:43 +10:30
elfxx-mips.h asan: mips_hi16_list segfault in bfd_get_section_limit_octets 2022-12-13 11:31:43 +10:30
elfxx-riscv.c riscv: Add AIA extension support (Smaia, Ssaia) 2022-11-25 10:00:06 +08:00
elfxx-riscv.h RISC-V: Output mapping symbols with ISA string. 2022-10-28 11:11:23 +08:00
elfxx-sparc.c
elfxx-sparc.h
elfxx-target.h Support multiple .eh_frame sections 2022-11-04 10:30:18 +08:00
elfxx-tilegx.c
elfxx-tilegx.h
elfxx-x86.c ld, gold: remove support for -z bndplt (MPX prefix) 2022-12-14 08:48:13 +01:00
elfxx-x86.h ld, gold: remove support for -z bndplt (MPX prefix) 2022-12-14 08:48:13 +01:00
format.c Re: The problem with warning in elf_object_p 2022-12-17 18:44:42 +10:30
gen-aout.c
genlink.h
go32stub.h
hash.c
host-aout.c
hppabsd-core.c
hpux-core.c
i386aout.c
i386bsd.c
i386lynx.c PR22509 - Null pointer dereference on coff_slurp_reloc_table 2022-11-23 22:38:48 +10:30
i386msdos.c bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
ihex.c bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
init.c
irix-core.c
libaout.h
libbfd-in.h stab nearest_line bfd_malloc_and_get_section 2022-09-26 14:23:29 +09:30
libbfd.c Compression tidy and fixes 2022-12-07 13:15:29 +10:30
libbfd.h Re: The problem with warning in elf_object_p 2022-12-17 18:44:42 +10:30
libcoff-in.h bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
libcoff.h bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
libecoff.h bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
libhppa.h ubsan: undefined shift in sign_extend 2022-08-13 14:11:27 +09:30
libpei.h ld: Add --pdb option 2022-10-20 15:22:37 +10:30
libxcoff.h
linker.c
lynx-core.c
mach-o-aarch64.c
mach-o-arm.c
mach-o-i386.c
mach-o-target.c
mach-o-x86-64.c
mach-o.c mach-o reloc size overflow 2022-11-10 20:29:03 +10:30
mach-o.h bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
MAINTAINERS
Makefile.am Re: The problem with warning in elf_object_p 2022-12-17 18:44:42 +10:30
Makefile.in Re: The problem with warning in elf_object_p 2022-12-17 18:44:42 +10:30
makefile.vms
mep-relocs.pl
merge.c Get rid of SEC_ELF_COMPRESS 2022-12-06 15:08:31 +10:30
mmo.c bfd, binutils, gas: Remove/mark unused variables 2022-09-15 10:46:02 +00:00
netbsd-core.c
netbsd.h
ns32k.h
ns32knetbsd.c
opncls.c Fix a conflict between the linker's need to rename some PE format input libraries and the BFD library's file caching mechanism. 2022-08-03 13:31:57 +01:00
osf-core.c
pc532-mach.c
pdb.c asan: segv in _bfd_archive_close_and_cleanup 2022-09-28 10:26:45 +09:30
pdp11.c PR22509 - Null pointer dereference on coff_slurp_reloc_table 2022-11-23 22:38:48 +10:30
pe-aarch64.c aarch64-pe support for LD, GAS and BFD 2022-10-19 10:57:12 +02:00
pe-arm-wince.c
pe-arm.c
pe-i386.c
pe-mcore.c
pe-sh.c
pe-x86_64.c
pef-traceback.h
pef.c asan: pef: buffer overflow 2022-11-28 17:29:11 +10:30
pef.h
pei-aarch64.c aarch64-pe support for LD, GAS and BFD 2022-10-19 10:57:12 +02:00
pei-arm-wince.c
pei-arm.c
pei-i386.c
pei-ia64.c
pei-loongarch64.c bfd: Add support for LoongArch64 EFI (efi-*-loongarch64). 2022-08-10 09:26:25 +08:00
pei-mcore.c
pei-sh.c
pei-x86_64.c Re: PE objdump -x 2022-08-03 17:00:17 +09:30
peicode.h Re: The problem with warning in elf_object_p 2022-12-17 18:44:42 +10:30
peXXigen.c buffer overflow in _bfd_XX_print_ce_compressed_pdata 2022-10-26 17:56:38 +10:30
plugin.c bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
plugin.h
PORTING
ppcboot.c bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
ptrace-core.c Re: bfd_cleanup for object_p 2022-09-24 10:06:37 +09:30
README
reloc16.c
reloc.c objcopy renaming section with explicit flags 2022-11-14 11:36:46 +10:30
rs6000-core.c
sco5-core.c
section.c Get rid of SEC_ELF_COMPRESS 2022-12-06 15:08:31 +10:30
simple.c symbols for bfd_simple_get_relocated_section_contents 2022-08-21 07:54:27 +09:30
som.c PR22509 - Null pointer dereference on coff_slurp_reloc_table 2022-11-23 22:38:48 +10:30
som.h bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
srec.c bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
stab-syms.c
stabs.c
syms.c Re: stab nearest_line bfd_malloc_and_get_section 2022-10-05 14:53:41 +10:30
sysdep.h
targets.c Re: The problem with warning in elf_object_p 2022-12-17 18:44:42 +10:30
targmatch.sed
tekhex.c bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
TODO
trad-core.c
vax1knetbsd.c
vaxnetbsd.c
verilog.c Fix verilog output when the width is > 1. 2022-12-01 13:09:26 +00:00
version.h Automatic date update in version.in 2022-12-17 00:01:15 +00:00
version.m4 Update version to 2.39.50 and regenerate files 2022-07-08 11:19:44 +01:00
vms-alpha.c PR29892, Field file_table of struct module is uninitialized 2022-12-12 19:25:19 +10:30
vms-lib.c
vms-misc.c
vms.h
warning.m4 bfd: Stop using -Wstack-usage=262144 when built with Clang 2022-09-14 05:42:17 +00:00
wasm-module.c asan: NULL deref in filter_symbols 2022-11-23 22:38:48 +10:30
wasm-module.h
xcofflink.c
xcofflink.h
xsym.c bfd: Add bfd_find_nearest_line_with_alt 2022-09-06 10:42:50 -04:00
xsym.h
xtensa-dynconfig.c xtensa: allow dynamic configuration 2022-11-28 18:16:12 -08:00
xtensa-isa.c xtensa: allow dynamic configuration 2022-11-28 18:16:12 -08:00
xtensa-modules.c

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

BFD is an object file library.  It permits applications to use the
same routines to process object files regardless of their format.

BFD is used by the GNU debugger, assembler, linker, and the binary
utilities.

The documentation on using BFD is scanty and may be occasionally
incorrect.  Pointers to documentation problems, or an entirely
rewritten manual, would be appreciated.

There is some BFD internals documentation in doc/bfdint.texi which may
help programmers who want to modify BFD.

BFD is normally built as part of another package.  See the build
instructions for that package, probably in a README file in the
appropriate directory.

BFD supports the following configure options:

  --target=TARGET
	The default target for which to build the library.  TARGET is
	a configuration target triplet, such as sparc-sun-solaris.
  --enable-targets=TARGET,TARGET,TARGET...
	Additional targets the library should support.  To include
	support for all known targets, use --enable-targets=all.
  --enable-64-bit-bfd
	Include support for 64 bit targets.  This is automatically
	turned on if you explicitly request a 64 bit target, but not
	for --enable-targets=all.  This requires a compiler with a 64
	bit integer type, such as gcc.
  --enable-shared
	Build BFD as a shared library.
  --with-mmap
	Use mmap when accessing files.  This is faster on some hosts,
	but slower on others.  It may not work on all hosts.

Report bugs in BFD to https://sourceware.org/bugzilla/

Patches are encouraged.  When sending patches, always send the output
of diff -u or diff -c from the original file to the new file.  Do not
send default diff output.  Do not make the diff from the new file to
the original file.  Remember that any patch must not break other
systems.  Remember that BFD must support cross compilation from any
host to any target, so patches which use ``#ifdef HOST'' are not
acceptable.  Please also read the ``Reporting Bugs'' section of the
gcc manual.

Bug reports without patches will be remembered, but they may never get
fixed until somebody volunteers to fix them.

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