用于iOS8.4的交叉构建二进制文件2.25.1 (arm64-apple-darwin14.0.0)

Question

编辑2015-30-10.我试过这样做：

../configure --prefix=/usr/local/GNU-CROSS/binutils-2.25.1/ CC="clang -fembed-bitcode -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.4.sdk -Wno-error -Wno-implicit-function-declaration -mios-version-min=8.4 -no-integrated-as -arch arm64 -target arm64-apple-darwin" CPP="clang -E" CPPFLAGS="-fembed-bitcode -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.4.sdk -Wno-error -Wno-implicit-function-declaration -mios-version-min=8.4 -no-integrated-as -arch arm64 -target arm64-apple-darwin" --host=aarch64-apple-darwin --disable-assembly --enable-static --disable-shared
make -j 4

配置顺利，但make触发了以下操作：

BFD does not support target aarch64-apple-darwin

初始问题.

我正试图为iOS (8.4) 64位目标交叉构建二进制文件2.25.1。我把binutils-2.25.1文件夹放在目标和config.guess脚本上，这给了我arm64-appl-darwin14.0.0。在我的主机(x86_64-apple-darwin14.4.0)上，我在binutils-2.25.1中创建了一个构建文件夹，并在那里运行：

CCFLAGS="--arch arm64" LDFLAGS="--arch arm64" ../configure --prefix=/usr/local/lvm-cross/ --host=arm-apple-darwin

这给了我这个

configure: error: in `/Users/XXXX/Documents/src/gcc-5.2.0-cross/binutils-2.25.1/build':
configure: error: C compiler cannot create executables

所有细节都在最后的config.log文件中。

我的问题如下:如何为这个64位目标构建二进制文件？

config.log文件包含以下内容：

This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by configure, which was
generated by GNU Autoconf 2.64.  Invocation command line was

  $ ../configure --prefix=/usr/local/lvm-cross/ --host=arm-apple-darwin

## --------- ##
## Platform. ##
## --------- ##

hostname = XXXXs-MacBook-Air.local
uname -m = x86_64
uname -r = 14.4.0
uname -s = Darwin
uname -v = Darwin Kernel Version 14.4.0: Thu May 28 11:35:04 PDT 2015; root:xnu-2782.30.5~1/RELEASE_X86_64

/usr/bin/uname -p = i386
/bin/uname -X     = unknown

/bin/arch              = unknown
/usr/bin/arch -k       = unknown
/usr/convex/getsysinfo = unknown
/usr/bin/hostinfo      = Mach kernel version:
     Darwin Kernel Version 14.4.0: Thu May 28 11:35:04 PDT 2015; root:xnu-2782.30.5~1/RELEASE_X86_64
Kernel configured for up to 4 processors.
2 processors are physically available.
4 processors are logically available.
Processor type: x86_64h (Intel x86-64h Haswell)
Processors active: 0 1 2 3
Primary memory available: 4.00 gigabytes
Default processor set: 239 tasks, 978 threads, 4 processors
Load average: 1.62, Mach factor: 2.37
/bin/machine           = unknown
/usr/bin/oslevel       = unknown
/bin/universe          = unknown

PATH: /sw/bin
PATH: /sw/sbin
PATH: /usr/local/bin
PATH: /usr/bin
PATH: /bin
PATH: /usr/sbin
PATH: /sbin
PATH: /opt/X11/bin
PATH: /usr/local/git/bin
PATH: /Library/TeX/texbin
PATH: /Users/XXXX/.opam/4.02.2/bin


## ----------- ##
## Core tests. ##
## ----------- ##

configure:2322: checking build system type
configure:2336: result: x86_64-apple-darwin14.4.0
configure:2383: checking host system type
configure:2396: result: arm-apple-darwin
configure:2416: checking target system type
configure:2429: result: arm-apple-darwin
configure:2483: checking for a BSD-compatible install
configure:2551: result: /usr/bin/install -c
configure:2562: checking whether ln works
configure:2584: result: yes
configure:2588: checking whether ln -s works
configure:2592: result: yes
configure:2599: checking for a sed that does not truncate output
configure:2663: result: /usr/bin/sed
configure:2672: checking for gawk
configure:2702: result: no
configure:2672: checking for mawk
configure:2702: result: no
configure:2672: checking for nawk
configure:2702: result: no
configure:2672: checking for awk
configure:2688: found /usr/bin/awk
configure:2699: result: awk
configure:3941: checking for arm-apple-darwin-gcc
configure:3971: result: no
configure:3981: checking for gcc
configure:3997: found /usr/bin/gcc
configure:4008: result: gcc
configure:4237: checking for C compiler version
configure:4246: gcc --version >&5
Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
Target: x86_64-apple-darwin14.4.0
Thread model: posix
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
configure:4257: $? = 0
configure:4246: gcc -v >&5
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
Target: x86_64-apple-darwin14.4.0
Thread model: posix
configure:4257: $? = 0
configure:4246: gcc -V >&5
clang: error: argument to '-V' is missing (expected 1 value)
clang: error: no input files
configure:4257: $? = 1
configure:4246: gcc -qversion >&5
clang: error: unknown argument: '-qversion'
clang: error: no input files
configure:4257: $? = 1
configure:4277: checking for C compiler default output file name
configure:4299: gcc   --arch arm64 conftest.c  >&5
clang: error: unsupported option '--arch'
clang: error: no such file or directory: 'arm64'
configure:4303: $? = 1
configure:4340: result: 
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE_URL ""
| /* end confdefs.h.  */
| 
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:4346: error: in `/Users/XXXX/Documents/src/gcc-5.2.0-cross/binutils-2.25.1/build':
configure:4350: error: C compiler cannot create executables
See `config.log' for more details.

## ---------------- ##
## Cache variables. ##
## ---------------- ##

ac_cv_build=x86_64-apple-darwin14.4.0
ac_cv_env_AR_FOR_TARGET_set=
ac_cv_env_AR_FOR_TARGET_value=
ac_cv_env_AR_set=
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ac_cv_env_CC_FOR_TARGET_set=
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ac_cv_env_CFLAGS_set=
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ac_cv_env_DLLTOOL_set=
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ac_cv_env_GCC_FOR_TARGET_set=
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ac_cv_env_GFORTRAN_FOR_TARGET_value=
ac_cv_env_GOC_FOR_TARGET_set=
ac_cv_env_GOC_FOR_TARGET_value=
ac_cv_env_LDFLAGS_set=set
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ac_cv_env_target_configargs_set=
ac_cv_env_target_configargs_value=
ac_cv_host=arm-apple-darwin
ac_cv_path_SED=/usr/bin/sed
ac_cv_path_install='/usr/bin/install -c'
ac_cv_prog_AWK=awk
ac_cv_prog_ac_ct_CC=gcc
ac_cv_target=arm-apple-darwin
acx_cv_prog_LN=ln

## ----------------- ##
## Output variables. ##
## ----------------- ##

AR=''
AR_FOR_BUILD='ar'
AR_FOR_TARGET=''
AS=''
AS_FOR_BUILD='as'
AS_FOR_TARGET=''
AWK='awk'
BISON=''
BUILD_CONFIG=''
CC='gcc'
CC_FOR_BUILD='gcc'
CC_FOR_TARGET=''
CFLAGS=''
CFLAGS_FOR_BUILD=''
CFLAGS_FOR_TARGET=''
COMPILER_AS_FOR_TARGET=''
COMPILER_LD_FOR_TARGET=''
COMPILER_NM_FOR_TARGET=''
CONFIGURE_GDB_TK=''
CPPFLAGS=''
CXX=''
CXXFLAGS=''
CXXFLAGS_FOR_BUILD=''
CXXFLAGS_FOR_TARGET=''
CXX_FOR_BUILD='g++'
CXX_FOR_TARGET=''
DEBUG_PREFIX_CFLAGS_FOR_TARGET=''
DEFS=''
DLLTOOL=''
DLLTOOL_FOR_BUILD='dlltool'
DLLTOOL_FOR_TARGET=''
ECHO_C='\c'
ECHO_N=''
ECHO_T=''
EXEEXT=''
EXPECT=''
EXTRA_CONFIGARGS_LIBJAVA='--disable-static'
FLAGS_FOR_TARGET=''
FLEX=''
GCC_FOR_TARGET=''
GCC_SHLIB_SUBDIR=''
GCJ_FOR_BUILD='gcj'
GCJ_FOR_TARGET=''
GDB_TK=''
GFORTRAN_FOR_BUILD='gfortran'
GFORTRAN_FOR_TARGET=''
GNATBIND=''
GNATMAKE=''
GOC_FOR_BUILD='gccgo'
GOC_FOR_TARGET=''
INSTALL_DATA='${INSTALL} -m 644'
INSTALL_GDB_TK=''
INSTALL_PROGRAM='${INSTALL}'
INSTALL_SCRIPT='${INSTALL}'
LD=''
LDFLAGS='--arch arm64'
LDFLAGS_FOR_BUILD=''
LDFLAGS_FOR_TARGET=''
LD_FOR_BUILD='ld'
LD_FOR_TARGET=''
LEX=''
LIBOBJS=''
LIBS=''
LIPO=''
LIPO_FOR_TARGET=''
LN='ln'
LN_S='ln -s'
LTLIBOBJS=''
M4=''
MAINT=''
MAINTAINER_MODE_FALSE=''
MAINTAINER_MODE_TRUE=''
MAKEINFO=''
NM=''
NM_FOR_BUILD='nm'
NM_FOR_TARGET=''
OBJCOPY=''
OBJDUMP=''
OBJDUMP_FOR_TARGET=''
OBJEXT=''
PACKAGE_BUGREPORT=''
PACKAGE_NAME=''
PACKAGE_STRING=''
PACKAGE_TARNAME=''
PACKAGE_URL=''
PACKAGE_VERSION=''
PATH_SEPARATOR=':'
RANLIB=''
RANLIB_FOR_BUILD='ranlib'
RANLIB_FOR_TARGET=''
RAW_CXX_FOR_TARGET=''
READELF=''
READELF_FOR_TARGET=''
RPATH_ENVVAR=''
RUNTEST=''
SED='/usr/bin/sed'
SHELL='/bin/sh'
STRIP=''
STRIP_FOR_TARGET=''
SYSROOT_CFLAGS_FOR_TARGET=''
TOPLEVEL_CONFIGURE_ARGUMENTS='../configure --prefix=/usr/local/lvm-cross/ --host=arm-apple-darwin'
WINDMC=''
WINDMC_FOR_BUILD='windmc'
WINDMC_FOR_TARGET=''
WINDRES=''
WINDRES_FOR_BUILD='windres'
WINDRES_FOR_TARGET=''
YACC=''
ac_ct_CC='gcc'
ac_ct_CXX=''
bindir='${exec_prefix}/bin'
build='x86_64-apple-darwin14.4.0'
build_alias=''
build_configargs=''
build_configdirs='build-libiberty build-texinfo build-flex build-bison build-m4 build-fixincludes'
build_cpu='x86_64'
build_libsubdir='build-x86_64-apple-darwin14.4.0'
build_noncanonical='x86_64-apple-darwin14.4.0'
build_os='darwin14.4.0'
build_subdir='build-x86_64-apple-darwin14.4.0'
build_tooldir=''
build_vendor='apple'
clooginc=''
clooglibs=''
compare_exclusions=''
configdirs='intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl cloog libelf libiconv texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools'
datadir='${datarootdir}'
datarootdir='${prefix}/share'
do_compare=''
docdir='${datarootdir}/doc/${PACKAGE}'
dvidir='${docdir}'
exec_prefix='NONE'
extra_host_libiberty_configure_flags=''
extra_isl_gmp_configure_flags=''
extra_mpc_gmp_configure_flags=''
extra_mpc_mpfr_configure_flags=''
extra_mpfr_configure_flags=''
gmpinc=''
gmplibs=''
host='arm-apple-darwin'
host_alias='arm-apple-darwin'
host_configargs=''
host_cpu='arm'
host_noncanonical='arm-apple-darwin'
host_os='darwin'
host_shared=''
host_subdir='.'
host_vendor='apple'
htmldir='${docdir}'
includedir='${prefix}/include'
infodir='${datarootdir}/info'
islinc=''
libdir='${exec_prefix}/lib'
libexecdir='${exec_prefix}/libexec'
localedir='${datarootdir}/locale'
localstatedir='${prefix}/var'
mandir='${datarootdir}/man'
oldincludedir='/usr/include'
pdfdir='${docdir}'
poststage1_ldflags=''
poststage1_libs=''
prefix='/usr/local/lvm-cross'
program_transform_name='s,y,y,'
psdir='${docdir}'
sbindir='${exec_prefix}/sbin'
sharedstatedir='${prefix}/com'
stage1_cflags=''
stage1_checking=''
stage1_languages=''
stage1_ldflags=''
stage1_libs=''
stage2_werror_flag=''
sysconfdir='${prefix}/etc'
target='arm-apple-darwin'
target_alias=''
target_configargs=''
target_configdirs='target-libgcc target-libbacktrace target-libgloss target-newlib target-libgomp target-libcilkrts target-libatomic target-libitm target-libstdc++-v3 target-libsanitizer target-libvtv target-libssp target-libquadmath target-libgfortran target-boehm-gc target-libffi target-zlib target-libjava target-libobjc target-libada target-libgo target-rda'
target_cpu='arm'
target_noncanonical='arm-apple-darwin'
target_os='darwin'
target_subdir='arm-apple-darwin'
target_vendor='apple'
tooldir=''

## ------------------- ##
## File substitutions. ##
## ------------------- ##

alphaieee_frag=''
host_makefile_frag='config/mh-darwin'
ospace_frag=''
serialization_dependencies=''
target_makefile_frag=''

## ----------- ##
## confdefs.h. ##
## ----------- ##

/* confdefs.h */
#define PACKAGE_NAME ""
#define PACKAGE_TARNAME ""
#define PACKAGE_VERSION ""
#define PACKAGE_STRING ""
#define PACKAGE_BUGREPORT ""
#define PACKAGE_URL ""

configure: exit 77

Answer 1

TL;DR:我想您可能永远不会看到任何针对iOS的binutils发布。

1. 苹果从未在iOS上发布过Mach-O的规格说明。
2. 您不太可能将包含libbfd的代码放入App (因为它明确指出GNU与App的规则根本不兼容，特别是在iOS争议的VLC中)
3. 除了苹果版本的clang之外，您不太可能将代码编译到Apple(Apple审查指南明确禁止)中。
4. 即使以OS为目标，binutils也无法真正链接和构建代码。

如果您的目标是iOS，您将不得不使用苹果提供的工具链，或者从苹果发布的源代码(ld、clang和LLVM都是开源项目)构建您自己的等效工具链，而底层的iOS库可以从Mac复制而来，尽管只供您个人使用。