* handle '-sdk' / 'SDKROOT' (env.) properly.
e.g. 'xcrun -sdk /[...]/MacOSX10.6.sdk clang' will use
the specified 10.6 SDK.
* never execute xcode tools outside target/bin even when
a full path is specified.
e.g. 'xcrun /usr/bin/gcc' will execute target/bin/<triple>-gcc.
other wrapper changes:
* implement 'OSXCROSS_SDKROOT' env. variable for 'xcrun -sdk'.
* error on '-arch x86_64h' + clang <= 3.4.
clang <= 3.4 misinterprets x86_64h as x86_64.
* only create x86_64h symlinks when the 10.8 (or later) SDK
is used.
other changes:
* misc fixes and cleanup
update README with libc++ build instructions and samples
fix mavericks SDK download link (pointed to 10.8)
build xar only for <=10.5
add -g0 to the clang invocation command to avoid dsymutil from being run (debugging is not supported, but I guess you don't want to debug the resulting binaries anyway if you build them on a non OS X system)
attempt to make the toolchain less path dependent (gcc still breaks though, because of hardcoded paths), but clang and cctools can be moved now
update cctools to 845
add DISABLE_LTO_SUPPORT option (DISABLE_LTO_SUPPORT=1 ./build.sh) to disable linking against libLTO.so
add support for 32 bit systems
add FreeBSD support
update PACKAGE script
