链接器错误 – 尝试链接arm，但链接器使用x86
我试图将这个C库交叉编译为iOS库，即用于armv7机器。 我正在使用OSX机器来编译库。 该项目设置为使用Autoconf – 这是我正在使用的选项：
./configure --host=arm-apple-darwin --prefix ~/dev/xmlrpc-c-1.25.28/iOS_bin_arm CFLAGS="-arch armv7s -isysroot /Applications/XCode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.1.sdk -miphoneos-version-min=4.0" --disable-curl-client --disable-cplusplus LDFLAGS='-arch armv7s -miphoneos-version-min=4.0 --sysroot /Applications/XCode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.1.sdk'
编译好了。 问题发生在链接阶段：
ld: warning: ignoring file parse_datetime.osh, file was built for armv7s which is not the architecture being linked (x86_64): parse_datetime.osh ld: warning: ignoring file parse_value.osh, file was built for armv7s which is not the architecture being linked (x86_64): parse_value.osh ld: warning: ignoring file resource.osh, file was built for armv7s which is not the architecture being linked (x86_64): resource.osh ld: warning: ignoring file trace.osh, file was built for armv7s which is not the architecture being linked (x86_64): trace.osh ld: warning: ignoring file version.osh, file was built for armv7s which is not the architecture being linked (x86_64): version.osh ld: warning: ignoring file xmlrpc_data.osh, file was built for armv7s which is not the architecture being linked (x86_64): xmlrpc_data.osh ld: warning: ignoring file xmlrpc_datetime.osh, file was built for armv7s which is not the architecture being linked (x86_64): xmlrpc_datetime.osh ld: warning: ignoring file xmlrpc_string.osh, file was built for armv7s which is not the architecture being linked (x86_64): xmlrpc_string.osh
等等。 生成的dylib文件是为x86而不是armv7构建的，这是我的iOS应用程序将链接的架构–Xcode在尝试构建项目时抛出这些错误：
ld: warning: ld: warning: ld: warning: ignoring file ~/dev/xmlrpc-c-1.25.28/iOS_bin_arm/lib/libxmlrpc_server_pstream++.7.25.dylib, file was built for x86_64 which is not the architecture being linked (armv7): ~/dev/xmlrpc-c-1.25.28/iOS_bin_arm/lib/libxmlrpc_server_pstream++.7.25.dylib ignoring file ~/dev/xmlrpc-c-1.25.28/iOS_bin_arm/lib/libxmlrpc_server_cgi++.dylib, file was built for x86_64 which is not the architecture being linked (armv7):~/dev/xmlrpc-c-1.25.28/iOS_bin_arm/lib/libxmlrpc_server_cgi++.dylib
对于之前使用./configure和make生成的每个可执行文件等等。
显然，当我在模拟器上测试我的代码时，一切都很顺利，因为没有交叉编译问题。
我甚至尝试直接在make命令中指定LDFLAGS，但它仍然试图链接到x86。 有没有办法告诉编译器链接指定的架构？ 我已经检查了ld的手册页，但我找不到任何可能有用的东西。 有任何想法吗？
Autoconf基本上是我最糟糕的噩梦，所以这个解决方案可能不是“正确的”，但可以解锁你 – 看起来构建配置在OS X上链接时不会考虑LDFLAGS。它使用LDFLAGS_SHLIB，但我无法让它从命令行参数覆盖它。 试试这个补丁（注意我下载了v1.25.29） – 我所做的只是将你的参数添加到共享库的现有链接命令的末尾。
neals-mbp: ~/xmlrpc-c-1.25.29> diff config.mk.in config.mk.in2 297c297 < LDFLAGS_SHLIB = -dynamiclib -undefined suppress -single_module \ --- > LDFLAGS_SHLIB = -dynamiclib -undefined suppress -single_module -arch armv7s -miphoneos-version- min=4.0 --sysroot /Applications/XCode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.1.sdk \