All symbols starting with `b' in makedefs

• BASENAME makedefs/MakeInc.rule:35
• build_all makedefs/MakeInc.dir:277
• build_exporthdrs_md makedefs/MakeInc.dir:163
• build_exporthdrs_mi makedefs/MakeInc.dir:143
• build_install makedefs/MakeInc.dir:364
• build_installhdrs_md makedefs/MakeInc.dir:65
• build_installhdrs_mi makedefs/MakeInc.dir:46
• build_mach_kernel makedefs/MakeInc.dir:323
• build_setup makedefs/MakeInc.dir:231
• build_subdir makedefs/MakeInc.dir:267