+ if command -v xcode-select > /dev/null 2> /dev/null && \
+ ! xcode-select --print-path > /dev/null 2> /dev/null ; then
+ # Avoid executing cc if there is no toolchain installed as
+ # cc will be a stub that puts up a graphical alert
+ # prompting the user to install developer tools.
+ CC_FOR_BUILD=no_compiler_found
+ else
+ set_cc_for_build
+ fi
+ if test "$CC_FOR_BUILD" != no_compiler_found; then
+ if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
+ (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+ grep IS_64BIT_ARCH >/dev/null
+ then
+ case $UNAME_PROCESSOR in
+ i386) UNAME_PROCESSOR=x86_64 ;;
+ powerpc) UNAME_PROCESSOR=powerpc64 ;;
+ esac
+ fi
+ # On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc
+ if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \
+ (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+ grep IS_PPC >/dev/null
+ then
+ UNAME_PROCESSOR=powerpc
+ fi
+ elif test "$UNAME_PROCESSOR" = i386 ; then
+ # uname -m returns i386 or x86_64
+ UNAME_PROCESSOR=$UNAME_MACHINE
+ fi
+ echo "$UNAME_PROCESSOR"-apple-darwin"$UNAME_RELEASE"