./configure --prefix=/usr/local/cctools-6.5 make sudo make install Most users find it easier to install the corresponding Xcode and copy the binaries. After installation, check versions:
If your project strictly requires cctools 6.5, use the Apple open-source tarball and compile it within a macOS 10.9 virtual machine for best compatibility. For nearly all other cases, upgrade to a modern toolchain. cctools 6.5 download
cctools (also known as Apple cctools or OSX cross-toolchain ) is a collection of low-level binary manipulation tools used for macOS and iOS development. It includes utilities like ld (the Mach-O linker), ar , ranlib , nm , otool , install_name_tool , and lipo . These tools are essential for creating, inspecting, and modifying Mach-O executables, libraries, and object files. and modifying Mach-O executables