Defined in 5 files as a macro:

• contrib/diff/config.h, line 46 (as a macro)
• contrib/diff/config.h, line 49 (as a macro)
• contrib/diff/lib/dirname.h, line 33 (as a macro)
• gnu/usr.bin/grep/system.h, line 70 (as a macro)
• gnu/usr.bin/grep/system.h, line 78 (as a macro)

Referenced in 4 files:

• contrib/diff/lib/basename.c, line 38
• contrib/diff/lib/dirname.h, line 32
• gnu/usr.bin/grep/grep.c, line 1086
• gnu/usr.bin/grep/system.h, line 77